Exhibit 10.5




[H & P LOGO]








                                CREDIT AGREEMENT


                               dated July 16, 2002


                                      among


                  HELMERICH & PAYNE INTERNATIONAL DRILLING CO.


                             HELMERICH & PAYNE, INC.


                               THE SEVERAL LENDERS
                         FROM TIME TO TIME PARTY HERETO


                                       and


                     BANK OF OKLAHOMA, NATIONAL ASSOCIATION,
                             as Administrative Agent










                                TABLE OF CONTENTS



                                                                                                             Page
                                                                                                             ----
                                                                                                          
ARTICLE I - DEFINITIONS.......................................................................................1
1.1      Definitions..........................................................................................1
1.2      Construction and Interpretation.....................................................................18
1.3      Accounting Terms....................................................................................18
ARTICLE II - TERMS OF THE CREDIT FACILITY....................................................................18
2.1      Commitments.........................................................................................18
2.2      Method of Borrowing.................................................................................19
2.3      Continuation and Conversion.........................................................................21
2.4      Notes...............................................................................................22
2.5      Reduction, Termination and Extension of Revolving Commitments.......................................23
2.6      Additional Provisions Relating to Letters of Credit.................................................23
2.7      Additional Provisions Relating to Swingline Loans...................................................28
2.8      Pro Rata Treatment..................................................................................28
2.9      Records of Loans....................................................................................29
ARTICLE III - INTEREST, FEES AND REPAYMENT...................................................................30
3.1      Interest............................................................................................30
3.2      Fees................................................................................................30
3.3      Maturity; Repayment.................................................................................31
3.4      Prepayments.........................................................................................32
3.5      Sharing of Payments.................................................................................32
3.6      Payments............................................................................................33
3.7      Computations of Interest and Fees...................................................................33
3.8      Maximum Lawful Interest Rate........................................................................33
ARTICLE IV - YIELD PROTECTION; OTHER PROVISIONS RELATING TO CREDIT FACILITY..................................34
4.1      Capital Adequacy....................................................................................34
4.2      Limitation on LIBOR Rate Loans......................................................................34
4.3      Illegality..........................................................................................34
4.4      Requirements of Law.................................................................................35
4.5      Treatment of Affected Loans.........................................................................36
4.6      Taxes...............................................................................................36
4.7      Compensation........................................................................................39
4.8      Replacement of Lenders..............................................................................39
ARTICLE V - CLOSING; CONDITIONS PRECEDENT....................................................................40
5.1      Closing Date........................................................................................40
5.2      Closing Conditions..................................................................................40
5.3      Conditions to All Extensions of Credit..............................................................42
ARTICLE VI - REPRESENTATIONS AND WARRANTIES..................................................................43
6.1      Organization; Existence; Compliance with Law........................................................43
6.2      Existence and Authorization.........................................................................43
6.3      Enforceability......................................................................................44








                                                                                                         
6.4      No Legal Bar........................................................................................44
6.5      Financial Condition.................................................................................44
6.6      No Material Litigation and Disputes.................................................................44
6.7      No Defaults.........................................................................................45
6.8      Ownership and Operation of Property.................................................................45
6.9      Licenses............................................................................................45
6.10     No Burdensome Restrictions..........................................................................45
6.11     Taxes...............................................................................................45
6.12     ERISA Matters.......................................................................................45
6.13     Governmental Regulations............................................................................46
6.14     Subsidiaries........................................................................................47
6.15     Purpose of Extensions of Credit.....................................................................47
6.16     Environmental Matters...............................................................................48
6.17     Labor Matters.......................................................................................48
6.18     No Material Misstatements...........................................................................49
ARTICLE VII - AFFIRMATIVE COVENANTS..........................................................................49
7.1      Reporting Requirements..............................................................................49
7.2      Preservation of Existence and Franchises............................................................51
7.3      Books and Records...................................................................................51
7.4      Compliance with Law.................................................................................52
7.5      Payment of Taxes and Other Indebtedness.............................................................52
7.6      Insurance...........................................................................................52
7.7      Maintenance of Property.............................................................................52
7.8      Performance of Obligations..........................................................................52
7.9      Use of Proceeds.....................................................................................52
7.10     Audits/Inspections..................................................................................52
7.11     Financial Covenants.................................................................................53
7.12     Liquidity Maintenance...............................................................................53
7.13     Additional Guarantors...............................................................................53
ARTICLE VIII - NEGATIVE COVENANTS............................................................................54
8.1      Indebtedness........................................................................................54
8.2      Liens...............................................................................................54
8.3      Merger and Consolidation............................................................................55
8.4      Dissolution.........................................................................................56
8.5      Asset Dispositions..................................................................................56
8.6      Transactions with Affiliates........................................................................57
8.7      Fiscal Year; Organizational Documents...............................................................57
8.9      Contingent Debt.....................................................................................57
ARTICLE IX - EVENTS OF DEFAULT...............................................................................58
9.1      Events of Default...................................................................................58
9.2      Acceleration; Remedies..............................................................................61
9.3      Waiver of Event of Default..........................................................................61
9.4      Allocation of Payments After Event of Default.......................................................62
ARTICLE X - AGENCY PROVISIONS................................................................................63
10.1     Appointment, Powers and Immunities..................................................................63







                                                                                                         
10.2     Reliance by Administrative Agent....................................................................63
10.3     Defaults............................................................................................64
10.4     Rights as a Lender..................................................................................64
10.5     Indemnification.....................................................................................64
10.6     Non-Reliance on Administrative Agent and Other Lenders..............................................65
10.7     Successor Administrative Agent......................................................................65
ARTICLE XI - PARENT GUARANTY.................................................................................65
ARTICLE XII - GENERAL PROVISIONS.............................................................................67
12.1     Notices.............................................................................................67
12.2     Right of Set-Off; Adjustments.......................................................................68
12.3     Benefit of Agreement................................................................................69
12.4     No Waiver; Remedies Cumulative......................................................................71
12.5     Expenses; Indemnification...........................................................................71
12.6     Amendments, Waivers and Consents....................................................................72
12.7     Counterparts........................................................................................74
12.8     Headings............................................................................................74
12.9     Survival............................................................................................74
12.10    Governing Law.......................................................................................74
12.11    Waiver of Jury Trial................................................................................74
12.12    Severability........................................................................................74
12.13    Entire Agreement....................................................................................75
12.14    Binding Effect......................................................................................75
12.15    Termination.........................................................................................75
12.16    Confidentiality.....................................................................................75
12.17    Spinoff/Merger; Other Proposed Transactions.........................................................76









                             SCHEDULES AND EXHIBITS

SCHEDULES

Schedule 1.1      Material Subsidiaries
Schedule 2.6(a)   Existing Letters of Credit
Schedule 6.5      Subsequent Events
Schedule 6.14     Subsidiaries
Schedule 6.17     Labor Matters
Schedule 7.6      Insurance

EXHIBITS

Exhibit "A"       Form of Promissory Note
Exhibit "A-1"     Form of Swingline Note
Exhibit "B"       Form of Subsidiary Guaranty Agreement
Exhibit "C"       Form of Notice of Borrowing
Exhibit "D"       Form of Notice of Request for Letter of Credit
Exhibit "E"       Form of Notice of Continuation/Conversion
Exhibit "F"       Form of Opinion
Exhibit "G"       Form of Compliance Certificate
Exhibit "H"       Form of Assignment and Acceptance








                                CREDIT AGREEMENT

         THIS CREDIT AGREEMENT (this "Agreement"), dated July 16, 2002, is
entered into by and among HELMERICH & PAYNE INTERNATIONAL DRILLING CO., a
Delaware corporation (the "Borrower"), HELMERICH & PAYNE, INC., a Delaware
corporation (the "Parent"), the Lenders (as hereinafter defined), and BANK OF
OKLAHOMA, NATIONAL ASSOCIATION, as Administrative Agent for the Lenders (in such
capacity, the "Administrative Agent"), with reference to the following:

         A. The Borrower is primarily engaged in the business of the contract
drilling of oil and gas wells for others.

         B. The Borrower has requested that the Lenders provide a revolving
credit facility in the maximum principal amount of $125,000,000 to be used for
the purposes hereinafter stated.

         C. The Lenders have agreed to establish the requested revolving credit
facility in favor of the Borrower on the terms and conditions hereinafter set
forth.

         NOW, THEREFORE, in consideration of the foregoing and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

         1.1 Definitions. As used in this Agreement, the following terms have
the meanings specified below, unless the context otherwise requires:

         "Adjusted LIBOR Rate" means, with respect to any LIBOR Rate Loan for
any Interest Period therefor, the rate per annum (rounded upwards, if necessary,
to the nearest 1/100 of 1%) determined by the Administrative Agent to be equal
to the quotient obtained by dividing (a) the LIBOR Rate for such LIBOR Rate Loan
for such Interest Period by (b) 1 minus the Eurodollar Reserve Requirement for
such LIBOR Rate Loan for such Interest Period.

         "Administrative Agent Fee Letter" means the letter agreement dated as
of the date hereof between the Borrower and the Administrative Agent, as
amended, modified, restated or supplemented from time to time.

         "Affiliate" means, with respect to any Person, any other Person (i)
directly or indirectly controlling or controlled by or under direct or indirect
common control with such Person or (ii) directly or indirectly owning or holding
five percent (5%) or more of the Capital Stock in such Person. For purposes of
this definition, "control" means when used with respect to any Person, the power
to direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise.



                                       1


         "Aggregate Revolving Committed Amount" means the aggregate amount of
Revolving Commitments in effect from time to time, as referenced in Section
2.1(a), as such amounts may be reduced from time to time pursuant to Section
2.5. The initial Aggregate Revolving Committed Amount is $125,000,000.

         "Agreement" (and such terms as "herein," "hereof," "hereto," "hereby,"
"hereunder" and the like) means and refers to this Credit Agreement, together
with all exhibits and schedules attached hereto, as it may be amended, modified,
restated or supplemented from time to time,

         "Applicable Lending Office" means, for each Lender, the office of such
Lender (or of an Affiliate of such Lender) as such Lender may from time to time
specify to the Administrative Agent and the Borrower by written notice as the
office at which its LIBOR Rate Loans are made and maintained.

         "Applicable Margins" means, for any day, the rates per annum set forth
below opposite the applicable Consolidated Debt to EBITDA Ratio, it being
understood that (i) the Applicable Margin for LIBOR Rate Loans shall be the
percentage set forth under the column "LIBOR Rate Loans," and (ii) the
Applicable Margin for Prime Rate Loans shall be the percentage set forth under
the column "Prime Rate Loans."



                         Consolidated Debt to EBITDA
    Pricing Level                   Ratio                     LIBOR Rate Loans              Prime Rate Loans
    -------------        ---------------------------          ----------------              ----------------
                                                                               
        Tier I                Less than 2.0:1.0           (Plus) 0.875% (87.5 bps)      (Minus) 1.750% (175 bps)
       Tier II             Greater than or equal to      (Plus) 1.125% (112.5 bps)      (Minus) 1.500% (150 bps)
                                   2.0:1.0


Until the first Rate Determination Date, the Applicable Margins shall those
applicable to the "Tier I Pricing Level" shown in the table above. The
Applicable Margins shall be determined and adjusted, if appropriate, quarterly
on each Rate Determination Date; provided that in the event the applicable
Required Financial Information is not delivered to the Administrative Agent by
the date required by Section 7.1(a) or 7.1(b), as applicable, the Applicable
Margins shall be based on the highest pricing level until such time as the
Required Financial Information is delivered. Subject to such proviso, each
Applicable Margin shall be effective from one Rate Determination Date until the
next Rate Determination Date. The Administrative Agent shall determine the
appropriate Applicable Margins promptly upon receipt of the Required Financial
Information and shall promptly notify the Borrower and the Lenders of any
changes therein. Such determinations by the Administrative Agent shall be
conclusive, absent manifest error. Adjustments in the Applicable Margins shall
be effective as to existing Extensions of Credit as well as new Extensions of
Credit made thereafter.

         "Asset Disposition" means and includes the sale, lease (including any
Sale/Leaseback Transaction), transfer or other disposition of any Property by a
member of the Consolidated




                                       2


Group (including the Capital Stock of a Subsidiary), whether pursuant to a
single transaction or a series of related transactions.

         "Bank of Oklahoma" means Bank of Oklahoma, National Association, and
its successors.

         "Bank One Agreement" means the Credit Agreement dated as of October 27,
1998, between the Parent and Bank One, Oklahoma, N.A., as amended pursuant to a
First Amendment to Credit Agreement dated as of May 20, 1999, as assigned to and
assumed by the Borrower pursuant to an Assignment and Assumption Agreement dated
as of July 16, 2002, among the Parent, the Borrower and Bank One, Oklahoma,
N.A., as further amended pursuant to a Second Amendment dated as of July 16,
2002, among the Parent, the Borrower and Bank One, Oklahoma, N.A., and as it may
be further amended, supplemented, assigned or otherwise modified from time to
time.

         "Bankruptcy Code" means the United States Bankruptcy Code (Title 11 of
the United States Code), as amended, modified, succeeded or replaced from time
to time.

         "Bankruptcy Event" means, with respect to any Person, the occurrence of
any of the following with respect to such Person: (i) a court or governmental
agency having jurisdiction in the premises shall enter a decree or order for
relief in respect of such Person in an involuntary case under the Bankruptcy
Code or any other applicable insolvency or other similar Law now or hereafter in
effect, or appointing a receiver, liquidator, assignee, custodian, trustee,
sequestrator (or similar official) of such Person or for any substantial part of
its Property or ordering the winding up or liquidation of its affairs; or (ii)
there shall be commenced against such Person an involuntary case under the
Bankruptcy Code or any other applicable insolvency or other similar Law now or
hereafter in effect, or any case, proceeding or other action for the appointment
of a receiver, liquidator, assignee, custodian, trustee, sequestrator (or
similar official) of such Person or for any substantial part of its Property or
for the winding up or liquidation of its affairs, and such involuntary case or
other case, proceeding or other action shall remain undismissed, undischarged or
unbonded for a period of 90 consecutive days; or (iii) such Person shall
commence a voluntary case under the Bankruptcy Code or any other applicable
insolvency or other similar Law now or hereafter in effect, or consent to the
entry of an order for relief in an involuntary case under any such law, or
consent to the appointment or taking possession by a receiver, liquidator,
assignee, custodian, trustee, sequestrator (or similar official) of such Person
or for any substantial part of its Property or make any general assignment for
the benefit of creditors; or (iv) such Person shall be unable to pay or shall
fail to pay, or shall admit in writing its inability to pay, its debts generally
as they become due.

         "Business Day" means a day other than a Saturday, Sunday or other day
on which commercial banks in Tulsa, Oklahoma, or New York, New York, are
authorized or required by law to be closed, except that, when used in connection
with a LIBOR Rate Loan, such day shall also be a day on which dealings between
banks are carried on in Dollar deposits in London, England.



                                       3


         "Capital Lease" means, as applied to any Person, any lease of any
Property (whether real, personal or mixed) by that Person as lessee which, in
accordance with GAAP, is or should be accounted for as a capital lease on the
balance sheet of that Person.

         "Capital Stock" means (i) in the case of a corporation, capital stock,
(ii) in the case of a partnership, partnership interests (whether general or
limited), (iii) in the case of a limited liability company, membership
interests, (iv) in the case of an association or other business entity, shares,
interests, participations, rights or other equivalents (however designated) of
capital stock, and (v) any other interest or participation that confers on a
Person the right to receive a share of the profits and losses of, or
distributions of assets of, the issuing Person.

         "Change of Control" means (i) the acquisition by any Person, or two or
more Persons acting in concert, of beneficial ownership (within the meaning of
Rule 13d-3 of the SEC under the Securities Exchange Act) of 35% or more of the
outstanding shares of Voting Stock of the Parent, (ii) the existence of any
circumstance or the occurrence of any event whereby the individuals who comprise
the Incumbent Board shall cease for any reason to constitute at least two-thirds
of the voting members of the Board of Directors of the Parent, or (iii) the
failure of the Borrower to be and remain a wholly-owned Subsidiary of the Parent
(unless the Borrower and the Parent have been merged or consolidated with each
other in a merger or consolidation permitted by Section 8.3(ii)). For purposes
of this definition, the "Incumbent Board" means the individuals who are members
of the Board of Directors of the Parent as of the Closing Date and any
individual who is hereafter elected to the Board of Directors by the Parent's
common stockholders after his or her nomination for election as a new director
is approved by a vote of at least two-thirds of the Incumbent Board, provided,
however, that no individual shall be considered a member of the Incumbent Board
if such individual initially assumes office as a result of either an actual or
threatened "election contest" (as described in Rule 14A-11 of the SEC
promulgated under the Securities Exchange Act) or other actual or threatened
solicitation of proxies or consents by or on behalf of a Person other than the
Board of Directors, including an individual elected by reason of any agreement
intended to avoid or settle any election contest or proxy contest.

         "Charter Documents" means, with respect to any Credit Party, its
Articles or Certificate of Incorporation, Articles of Organization or other
similar publicly-filed organizational documents, and its bylaws, partnership
agreement, operating agreement and other similar internal governance documents,
as the same may be amended or modified from time to time (subject to the terms
of this Agreement).

         "Cimarex" means Cimarex Energy Co., a Delaware corporation, formerly
known as Helmerich & Payne Exploration and Production Co.

         "Closing Date" means the time and date, as specified in Section 5.1, on
which the initial Extensions of Credit are made hereunder.

         "Commitment Period" means the period from and including the Closing
Date to but not including the earlier of (i) the Revolving Commitment
Termination Date, or (ii) the date on




                                       4


which the Revolving Commitments terminate in accordance with the provisions of
this Agreement.

         "Commitments" means any of the Revolving Commitments, the LOC
Commitments or the Swingline Commitments.

         "Committed Amount" means any of the Revolving Committed Amount, the LOC
Committed Amount or the Swingline Committed Amount, as applicable.

         "Consolidated Debt to Capitalization Ratio" means, for the Consolidated
Group as of the last day of each fiscal quarter, the ratio of (i) Consolidated
Total Funded Debt on such day, minus the aggregate amount of any Funded Debt
incurred as the direct result of Forward Sale Contracts relating to securities
held in the Investment Portfolio, as long as such Funded Debt is fully secured
by Marketable Securities, to (ii) Consolidated Total Capitalization on such day.

         "Consolidated Debt to EBITDA Ratio" means, for the Consolidated Group
as of the last day of each fiscal quarter, the ratio of (i) Consolidated Total
Funded Debt on such day, minus the sum of (A) the aggregate amount of any Funded
Debt incurred as the direct result of Forward Sale Contracts relating to
securities held in the Investment Portfolio, as long as such Funded Debt is
fully secured by Marketable Securities, and (B) an amount equal to the after-tax
fair market value of the cash, cash equivalents and Marketable Securities held
in the Investment Portfolio (excluding any securities which are subject to a
Forward Sale Contract or which secure any margin loan, Forward Sale Contract or
other Indebtedness), to (ii) Consolidated EBITDA for the period of four
consecutive fiscal quarters ending as of such day. In no event, however, shall
the amount determined under clause (i) be less than zero.

         "Consolidated EBITDA" means, for any period for the Consolidated Group,
the sum of (i) net income (or loss) determined on a consolidated basis in
accordance with GAAP, plus (ii) to the extent deducted in determining
consolidated net income, (A) all interest expense (net of interest income),
including the amortization of debt discount and premium, and the interest
component under Capital Leases, (B) income taxes, (C) depreciation and
amortization, (D) non-recurring, non-cash charges and adjustments, in either
case related to impairment of long-lived assets, and (E) other non-cash
extraordinary items, in each case determined on a consolidated basis in
accordance with GAAP, minus (iii) to the extent included in determining
consolidated net income, non-recurring gains (including gains on the sale of
Marketable Securities), in each case determined on a consolidated basis in
accordance with GAAP; provided, however, that Consolidated EBITDA shall exclude
any EBITDA attributable to or arising from the oil and gas exploration and
production business of the Consolidated Group.

         "Consolidated Group" means the Parent and its Subsidiaries.

         "Consolidated Tangible Net Worth" means, as of any date, consolidated
shareholders' equity or net worth of the Consolidated Group, as determined in
accordance with GAAP, minus intangible assets of the Consolidated Group, as
determined in accordance with GAAP, including (i) deferred charges, (ii) the
amount of any write-up in the book value of any assets reflected on




                                       5


any balance sheet resulting from revaluation thereof or any write-up in excess
of the cost of such assets acquired (excluding Marketable Securities), and (iii)
the aggregate of all amounts reflected on the assets side of any such balance
sheet for franchises, licenses, permits, patents, patent applications,
copyrights, trademarks, trade names, goodwill, experimental or organizational
expenses and other like intangibles.

         "Consolidated Total Capitalization" means, as of any date, the sum of
Consolidated Total Funded Debt and Consolidated Tangible Net Worth, each
calculated at such time.

         "Consolidated Total Funded Debt" means, as of any date, the aggregate
Funded Debt of the Consolidated Group determined on a consolidated basis in
accordance with GAAP.

         "Contingent Debt" means, with respect to any Person, without
duplication, any contingent liabilities, obligations or indebtedness of such
Person (other than endorsements in the ordinary course of business of negotiable
instruments for deposit or collection), including (i) any obligations or similar
undertakings to guarantee any Indebtedness of any other Person in any manner,
whether direct or indirect, and including any obligation to purchase any such
Indebtedness or any Property constituting security therefor, to advance or
provide funds or other support for the payment or purchase of any such
Indebtedness or to maintain working capital, solvency or other balance sheet
condition of such other Person (including keep well agreements, maintenance
agreements, comfort letters or similar agreements or arrangements) for the
benefit of any holder of Indebtedness of such other Person, to lease or purchase
Property, securities or services primarily for the purpose of assuring the
holder of such Indebtedness, or otherwise to assure or hold harmless the holder
of such Indebtedness against loss in respect thereof, (ii) obligations to
indemnify other Persons against liability or loss, to the extent not arising in
the ordinary course of business, and (iii) warranty obligations and other
contractually assumed obligations, to the extent not arising in the ordinary
course of business.

         "Contractual Obligation" means, as to any Person, any provision of any
security issued or guaranteed by such Person or of any material agreement,
instrument or undertaking to which such Person is a party or by which it or any
of its Property is bound.

         "Credit Documents" means a collective reference to this Agreement, the
Notes, the Subsidiary Guaranty, each Subsidiary Guaranty Joinder Agreement, the
LOC Documents, the Administrative Agent Fee Letter, the Fee Letter, and all
other related agreements and documents issued or delivered hereunder or
thereunder or pursuant hereto or thereto (in each case as the same may be
amended, modified, restated, supplemented, extended, renewed or replaced from
time to time), and "Credit Document" means any one of them.

         "Credit Parties" means, collectively, the Borrower, the Parent and the
Material Subsidiaries, and "Credit Party" means any one of them.

         "Default" means any event, act or circumstance which, with the giving
of notice or the lapse of time, or both, would constitute an Event of Default.



                                       6


         "EBITDA" means, for any period and for any member of the Consolidated
Group, the sum of (i) its net income (or loss) determined in accordance with
GAAP, plus (ii) to the extent deducted in determining such net income, (A)
interest expense (net of interest income), including the amortization of debt
discount and premium, and the interest component under Capital Leases, in each
case determined in accordance with GAAP, (B) income taxes, (C) depreciation and
amortization, (D) non-recurring, non-cash charges and adjustments, in either
case related to impairment of long-lived assets, and (E) other non-cash
extraordinary items, minus (iii) to the extent included in determining net
income, non-recurring gains (including gains on the sale of Marketable
Securities), in each case determined in accordance with GAAP.

         "Eligible Assignee" means (i) a Lender, (ii) an Affiliate of a Lender
or any fund that makes purchases, holds or invests in bank loans or similar
extensions of credit and is managed or advised by a Lender (or an Affiliate of a
Lender) or an investment advisor (or an Affiliate of an investment advisor) to a
Lender, or (iii) any other Person approved by the Administrative Agent and the
Borrower (such approval by the Administrative Agent or the Borrower not to be
unreasonably withheld or delayed and such approval to be deemed given by the
Borrower if no objection is received by the assigning Lender and the
Administrative Agent from the Borrower within five Business Days after notice of
such proposed assignment has been provided by the assigning Lender to the
Borrower), unless an Event of Default has occurred and is continuing at the time
any assignment is effected in accordance with Section 12.3, in which case no
approval from the Borrower or the Administrative Agent shall be required;
provided, however, that neither the Borrower nor an Affiliate of the Borrower
shall qualify as an Eligible Assignee.

         "Environmental Law" means any law, statute, rule, regulation, code or
ordinance of any Governmental Authority and any order, decree, judgment,
injunction, notice or binding agreement issued, promulgated or entered into by
any Governmental Authority, relating in any way to (i) the environment, (ii) the
preservation or reclamation of natural resources, (iii) emissions, discharges,
releases or threatened releases of Hazardous Materials into the environment,
including ambient air, surface water, ground water or land, (iii) the
manufacture, processing, distribution, use, treatment, storage, disposal,
transport or handling of Hazardous Materials, (iv) the health effects of
Hazardous Materials, or (v) health, industrial hygiene, environmental conditions
or safety matters.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended, and any successor statute thereto, as interpreted by the rules and
regulations thereunder, all as the same may be in effect from time to time.

         "ERISA Affiliate" means an entity which, at the relevant time, is under
common control with any member of the Consolidated Group within the meaning of
Section 4001(a)(14) of ERISA, or is a member of a group which includes any
member of the Consolidated Group and which is treated as a single employer under
Section 414(b) or (c) of the IRC.

         "ERISA Event" means (i) with respect to any Single Employer Plan or
Multiple Employer Plan, the occurrence of a Reportable Event or the substantial
cessation of operations (within the meaning of Section 4062(e) of ERISA), (ii)
the withdrawal by any member of the Consolidated




                                       7


Group or any ERISA Affiliate from a Multiple Employer Plan during a plan year in
which it was a substantial employer (as such term is defined in Section
4001(a)(2) of ERISA), or the termination of a Multiple Employer Plan, (iii) the
distribution of a notice of intent to terminate or the actual termination of a
Plan pursuant to Section 4041(a)(2) or 4041A of ERISA, (iv) the institution of
proceedings to terminate or the actual termination of a Plan by the PBGC under
Section 4042 of ERISA, (v) any event or condition which could reasonably
constitute grounds under Section 4042 of ERISA for the termination of, or the
appointment of a trustee to administer, any Plan, (vi) the complete or partial
withdrawal of any member of the Consolidated Group or any ERISA Affiliate from a
Multiemployer Plan, (vii) the conditions for imposition of a lien under Section
302(f) of ERISA exist with respect to any Single Employer Plan or Multiple
Employer Plan, or (viii) the adoption of an amendment to any Plan requiring the
provision of security to such Plan pursuant to Section 307 of ERISA.

         "Eurodollar Reserve Requirement" means, at any time, the maximum rate
at which reserves (including any marginal, special, supplemental, or emergency
reserves) are required to be maintained under regulations issued from time to
time by the Board of Governors of the Federal Reserve System (or any successor)
by member banks of the Federal Reserve System against "Eurocurrency liabilities"
(as such term is used in Regulation D). Without limiting the effect of the
foregoing, the Eurodollar Reserve Requirement shall reflect any other reserves
required to be maintained by such member banks with respect to (i) any category
of liabilities which includes deposits by reference to which the Adjusted LIBOR
Rate is to be determined, or (ii) any category of extensions of credit or other
assets which include LIBOR Rate Loans. The Adjusted LIBOR Rate shall be adjusted
automatically on and as of the effective date of any change in the Eurodollar
Reserve Requirement.

         "Event of Default" has the meaning assigned to such term in Section
9.1.

         "Executive Officer" of any Person means the chief executive officer,
chief operating officer, president, vice president, chief financial officer or
treasurer of such Person.

         "Extension of Credit" means, as to any Lender, the making of, or
participation in, a Loan by such Lender (including continuations and conversions
thereof other than a conversion of a LIBOR Rate Loan into a Prime Rate Loan) or
the issuance or extension of, or participation in, a Letter of Credit.

         "Facility" means the senior credit facility established by the Lenders
under Article II.

         "Facility Maturity Date" means June 30, 2005, or such later date to
which the Facility Maturity Date may be extended from time to time pursuant to
Section 2.5(c).

         "Federal Funds Rate" means, for any day, the rate per annum (rounded
upwards, if necessary, to the nearest 1/100 of 1%) equal to the weighted average
of the rates on overnight Federal funds transactions with members of the Federal
Reserve System arranged by federal funds brokers on such day, as published by
the Federal Reserve Bank of New York on the Business Day next succeeding such
day; provided that (i) if such day is not a Business Day, the




                                       8


Federal Funds Rate for such day shall be such rate on such transactions on the
next preceding Business Day as so published on the next succeeding Business Day,
and (ii) if no such rate is so published on such next succeeding Business Day,
the Federal Funds Rate for such day shall be the average rate charged to the
Administrative Agent (in its individual capacity) on such day on such
transactions as determined by the Administrative Agent.

         "Fee Letter" means that certain letter agreement, dated as of the date
hereof, between the Administrative Agent (on behalf of the Lenders) and the
Borrower, as amended, modified, restated or supplemented from time to time.

         "Fees" means all fees payable pursuant to Section 3.2.

         "Forward Sale Contract" means a prepaid forward sale agreement in which
the Borrower receives an up-front payment in exchange for a commitment to
deliver securities in the future, with the number of shares to be delivered
varying with the share price at maturity.

         "Funded Debt" means, with respect to any Person, without duplication,
(i) all obligations of such Person for borrowed money, (ii) all obligations of
such Person evidenced by bonds, debentures, notes or similar instruments, or
upon which interest payments are customarily made, (iii) all purchase money
Indebtedness (including for purposes hereof, indebtedness and obligations in
respect of conditional sale or title retention arrangements and obligations in
respect of the deferred purchase price of property or services) of such Person,
including the principal portion of all obligations of such Person under Capital
Leases, (iv) all Contingent Debt of such Person with respect to Funded Debt of
another Person, (v) the maximum available amount of all standby letters of
credit or acceptances issued or created for the account of such Person, (vi) all
Funded Debt of another Person secured by a Lien on any Property of such Person,
whether or not such Funded Debt has been assumed, (vii) the principal balance
outstanding under Synthetic Leases, and (viii) the Funded Debt of any
partnership or joint venture in which such Person is a general partner or joint
venturer, but only to the extent to which there is recourse to such Person for
the payment of such Funded Debt.

         "GAAP" means generally accepted accounting principles in the United
States applied on a consistent basis and subject to the terms of Section 1.3.

         "Governmental Authority" means any federal, state, local or foreign
court or governmental agency, authority, instrumentality or regulatory body.

         "Guarantors" means the Parent and each of the current or future
Material Subsidiaries.

         "Hazardous Materials" means all explosive or radioactive substances or
wastes and all hazardous or toxic substances, wastes or other pollutants,
including petroleum or petroleum distillates, asbestos, or asbestos-containing
materials, polychorinated biphenyls, radon gas, infectious or medical waste and
all other substances or wastes of any nature regulated pursuant to any
Environmental Law as hazardous, toxic, a pollutant or a contaminant.



                                       9


         "Hedging Agreement" means any interest rate protection agreement,
including an interest rate swap, cap or collar agreement or similar arrangement,
foreign currency exchange rate protection agreement, commodity price protection
or other interest rate, currency exchange rate or commodity price hedging
agreement.

         "IRC" means the Internal Revenue Code of 1986, as amended, and any
successor statute thereto, as interpreted by the rules and regulations issued
thereunder, in each case as in effect from time to time.

         "Indebtedness" means, with respect to any Person, without duplication,
(i) all obligations of such Person for borrowed money, (ii) all obligations of
such Person evidenced by bonds, debentures, notes or similar instruments, or
upon which interest payments are customarily made, (iii) all obligations of such
Person under conditional sale or other title retention agreements relating to
any Properties purchased by such Person (other than customary reservations or
retentions of title under agreements with suppliers entered into in the ordinary
course of business), (iv) all obligations of such Person issued or assumed as
the deferred purchase price of Property or services purchased by such Person
(other than trade debt incurred in the ordinary course of business and due
within six months of the incurrence thereof) which would appear as liabilities
on a balance sheet of such Person, (v) all obligations of such Person under
take-or-pay or similar arrangements or under commodities agreements, (vi) all
Indebtedness of others secured by (or for which the holder of such Indebtedness
has an existing right, contingent or otherwise, to be secured by) any Lien on,
or payable out of the proceeds of production from, Property owned or acquired by
such Person, whether or not the obligations secured thereby have been assumed,
(vii) all Contingent Debt of such Person with respect to Indebtedness of another
Person, (viii) the principal portion of all obligations of such Person under
Capital Leases, (ix) all obligations of such Person under Hedging Agreements,
(x) the maximum amount of all standby letters of credit issued or bankers'
acceptances facilities created for the account of such Person and, without
duplication, all drafts drawn thereunder (to the extent unreimbursed), (xi) all
preferred Capital Stock issued by such Person and which by the terms thereof
could be (at the request of the holders thereof or otherwise) subject to
mandatory sinking fund payments, repurchase, redemption or other acceleration
any time during the period ending one year after the term of the Agreement,
(xii) the principal portion of all obligations of such Person under Synthetic
Leases, and (xiii) the Indebtedness of any partnership or unincorporated joint
venture in which such Person is a general partner or a joint venturer, but only
to the extent to which there is recourse to such Person for the payment of such
Indebtedness.

         "Interest Payment Date" means (i) as to any Prime Rate Loan, the last
day of each March, June, September and December, beginning September 30, 2002,
and the Facility Maturity Date, as applicable, and (ii) as to any LIBOR Rate
Loan, the last day of each Interest Period for such Loan, the date of repayment
of principal of such Loan and the Facility Maturity Date, as applicable.

         "Interest Period" means, as to any LIBOR Rate Loan, a period of 30, 60
or 90 days' duration, as the Borrower may elect, commencing in each case on the
date of the borrowing (including conversions, extensions and renewals);
provided, however, (A) if any Interest Period




                                       10


would end on a day which is not a Business Day, such Interest Period shall be
extended to the next succeeding Business Day (except that in the case of LIBOR
Rate Loans where the next succeeding Business Day falls in the next succeeding
calendar month, then on the next preceding Business Day), (B) no Interest Period
shall extend beyond the Facility Maturity Date, and (C) in the case of LIBOR
Rate Loans, where an Interest Period begins on a day for which there is no
numerically corresponding day in the calendar month in which the Interest Period
is to end, such Interest Period shall end on the last day of such calendar
month.

         "Investment Portfolio" means the Marketable Securities and cash or cash
equivalents maintained by the Credit Parties.

         "Issuing Lender" means Bank of Oklahoma.

         "Issuing Lender Fees" has the meaning assigned to such term in Section
3.2(b)(ii).

         "Lenders" means each of the Persons identified as a "Lender" on the
signature pages of this Agreement, and their respective successors and permitted
assigns. Unless the context otherwise expressly requires, the term includes the
Issuing Lender and the Swingline Lender.

         "Letter of Credit" means any standby letter of credit issued by the
Issuing Lender for the account of the Borrower in accordance with the terms of
Section 2.1(b).

         "Letter of Credit Fee" has the meaning assigned to such term in Section
3.5(b)(i).

         "LIBOR Rate" means, with respect to any LIBOR Rate Loan for any
Interest Period therefor, the rate per annum (rounded upwards, if necessary, to
the nearest 1/100 of 1%) equal to the "London Interbank Offered Rate" quoted as
the British Bankers' Association Interest Settlement Rate in U.S. Dollars at
approximately 11:00 a.m. (London time) on the Business Day prior to the first
day of such Interest Period for a term comparable to such Interest Period, as
shown on the LIBOR01 page of the Reuters Information Service; provided, however,
if more than one rate is specified on such LIBOR01 Page, the applicable rate
shall be the arithmetic mean of all such rates (rounded upwards, if necessary,
to the nearest 1/100 of 1%). If the Reuters Information Service shall cease to
publish such rate, the Administrative Agent shall determine such rate as the
average of quotations for three (3) major New York money center banks of whom
the Administrative Agent shall inquire as the "London Interbank Offered Rate"
for deposits in U.S. Dollars at approximately 11:00 a.m. (London time) on the
Business Day prior to the first day of such Interest Period for a term
comparable to such Interest Period.

         "LIBOR Rate Loan" means any Loan that bears interest at a rate based
upon the LIBOR Rate.

         "License" means any license, permit, certificate, consent, franchise,
concession, authorization, approval, filing, registration, notification or other
grant of authority from or with any Governmental Authority or other Person
obtained or required to be obtained from any Gover-




                                       11


nmental Authority in connection with the management or operation of the
business, or the ownership, lease, license or use of any Property, of any member
of the Consolidated Group.

         "Lien" means any mortgage, pledge, hypothecation, assignment, deposit
arrangement, security interest, encumbrance, lien (statutory or otherwise),
preference, priority or charge of any kind (including any agreement to give any
of the foregoing, any conditional sale or other title retention agreement, any
financing or similar statement or notice filed under the UCC or other similar
recording or notice statute, and any lease in the nature thereof).

         "Loan" or "Loans" means the Revolving Loans, the Swingline Loans or the
Term Loans, and the Prime Rate Loans and LIBOR Rate Loans comprising such Loans.

         "LOC Commitment" means the commitment of the Issuing Lender to issue
Letters of Credit in an aggregate face amount at any time outstanding (together
with the amounts of any unreimbursed drawings thereon) of up to the LOC
Committed Amount.

         "LOC Committed Amount" means the sum of $25,000,000.

         "LOC Documents" means, with respect to any Letter of Credit, such
Letter of Credit, any amendments thereto, any documents delivered in connection
therewith, any application therefor, and any agreements, instruments, guarantees
or other documents (whether general in application or applicable only to such
Letter of Credit) governing or providing for the rights and obligations of the
parties concerned or at risk.

         "LOC Obligations" means, at any time, the sum of (i) the maximum amount
which is, or at any time thereafter may become, available to be drawn under
Letters of Credit then outstanding, assuming compliance with all requirements
for drawings referred to in such Letters of Credit plus (ii) the aggregate
amount of all drawings under Letters of Credit honored by the Issuing Lender but
not theretofore reimbursed.

         "Marketable Securities" means readily marketable publicly-traded
securities, including any stock or other equity security publicly-traded on the
New York Stock Exchange, the American Stock Exchange or the National Association
of Securities Dealers Automated Quotation System (NASDAQ) and, if approved by
the Administrative Agent, any other stock traded on a recognized
over-the-counter market.

         "Material Adverse Effect" means a material adverse effect on or
material impairment of (i) the validity or enforceability of any Credit Document
or the rights, benefits or remedies of the Administrative Agent or the Lenders
under any Credit Document, (ii) the condition (financial or otherwise),
operations, business, assets, liabilities or prospects of the Consolidated Group
taken as a whole, or (iii) the ability of the Credit Parties to perform or
fulfill their obligations under the Credit Documents.

         "Material Subsidiary" means each Subsidiary of the Borrower listed on
Schedule 1.1 and each other Subsidiary (whether now existing or hereafter
acquired or formed) of the Parent




                                       12


whose net assets comprise (or on a pro forma basis would comprise) more than 5%
of the Consolidated Tangible Net Worth of the Consolidated Group or whose EBITDA
for either of the two most recent fiscal years account (or on a pro forma basis
would account) for more than 5% of Consolidated EBITDA; provided, however, that
(i) Helmerich & Payne de Venezuela, C.A. will not be considered a Material
Subsidiary unless and until such time as its net assets comprise more than 10%
of the Consolidated Tangible Net Worth of the Consolidated Group or its EBITDA
for either of the two most recent fiscal years account for more than 10% of
Consolidated EBITDA, and (ii) no Subsidiary now existing or hereafter formed in
connection with the Spinoff/Merger (including Cimarex) or any other disposition
permitted by Section 8.5(i) shall constitute a Material Subsidiary for purposes
of this Agreement so long as such Subsidiary has no material Properties other
than those assets associated with the oil and gas exploration and production
business of the Consolidated Group.

         "Medium Term Notes" means the $200,000,000 aggregate principal amount
of unsecured medium term Senior Notes to be issued and sold by the Borrower
substantially on the terms and conditions set forth in the Note Purchase
Agreement (draft dated June 26, 2002) relating thereto, a copy of which has been
provided to the Administrative Agent (and furnished by the Administrative Agent
to the Lenders).

         "Multiemployer Plan" means any Plan that is a "multiemployer plan" as
defined in Section 3(37) or 4001(a)(3) of ERISA.

         "Multiple Employer Plan" means a Plan (other than a Multiemployer Plan)
which any member of the Consolidated Group or any ERISA Affiliate and at least
one employer other than the members of the Consolidated Group or any ERISA
Affiliate are contributing sponsors.

         "Non-Use Fee" has the meaning assigned to such term in Section 3.2(a).

         "Notes" means the promissory notes of the Borrower in favor of each of
the Lenders (or nominees thereof) evidencing the Loans, each in substantially
the form attached as Exhibit "A" (with appropriate insertions) or, in the case
of the Swingline Loans, Exhibit "A-1," as such promissory notes may be amended,
modified, supplemented, extended, renewed or replaced from time to time, and
"Note" means any of the Notes.

         "Notice of Borrowing" means a written request for a borrowing, in
substantially the form of Exhibit "C."

         "Notice of Continuation/Conversion" means a written notice of
continuation or conversion, in substantially the form of Exhibit "E."

         "Notice of Request for Letter of Credit" means a written request for
the issuance or extension of a Letter of Credit, in substantially the form of
Exhibit "D."

         "Obligations" means, collectively, the Revolving Loans, the Swingline
Loans, the LOC Obligations, and the Term Loans, including principal, interest,
fees, indemnities and other




                                       13


amounts payable under the Credit Documents, and whether or not allowed as a
claim in any bankruptcy proceeding.

         "Operating Lease" means any lease which is not a Capital Lease.

         "Other Taxes" has the meaning assigned to such term in Section 4.6.

         "Participation Interest" means the purchase by a Lender of a
participation interest in LOC Obligations as provided in Section 2.6(a), in
Swingline Loans as provided in Section 2.7 and in Loans as provided in Section
3.5.

         "PBGC" means the Pension Benefit Guaranty Corporation established
pursuant to Subtitle A of Title IV of ERISA and any successor thereof.

         "Percentage" means, with respect to each Lender and subject to any
adjustments provided for in this Agreement, (i) until and including the
Revolving Commitment Termination Date, such Lender's Revolving Commitment
Percentage, and (ii) at any time after the Revolving Commitment Termination
Date, the percentage obtained by dividing such Lender's Term Loan outstanding at
such time by the aggregate amount of all Term Loans outstanding at such time.

         "Permitted Liens" means Liens permitted under Section 8.2.

         "Person" means any individual, partnership, joint venture, firm,
corporation, limited liability company, association, trust or other enterprise
(whether or not incorporated) or any Governmental Authority.

         "Plan" means any employee benefit plan (as defined in Section 3(3) of
ERISA) which is covered by ERISA and with respect to which any member of the
Consolidated Group or any ERISA Affiliate is (or, if such plan were terminated
at such time, would under Section 4069 of ERISA be deemed to be) an "employer"
within the meaning of Section 3(5) of ERISA.

         "Prime Rate" means the national "prime rate," as reported in the "Money
Rates Section" of The Wall Street Journal (Southwest Edition), changing as of
the effective date of each change in such rate. In the event such rate is no
longer published as provided herein, the Administrative Agent shall designate a
comparable index rate as the "Prime Rate" and notify the Borrower and the
Lenders of such designation.

         "Prime Rate Loan" means any Loan bearing interest at a rate determined
by reference to the Prime Rate.

         "Property" means any kind of property or asset, whether real, personal
or mixed and whether tangible or intangible, including any interest therein.



                                       14


         "Rate Determination Date" means the date that is five Business Days
after the date by which the Required Financial Information is required to be
delivered in accordance with the provisions of Section 7.1(a) or Section 7.1(b),
as applicable.

         "Regulation D, O, T, U, or X" means Regulation D, O T, U or X,
respectively, of the Board of Governors of the Federal Reserve System as from
time to time in effect and any successor to all or a portion thereof.

         "Reportable Event" means any of the events set forth in Section 4043(c)
of ERISA, other than those events as to which the notice requirement has been
waived by regulation.

         "Required Financial Information" means the annual and quarterly
Compliance Certificates and related financial statements and information
required by the provisions of Sections 7.1(a), (b) and (c).

         "Required Lenders" means, at any time, Lenders having more than 66.6%
of the aggregate Commitments or, if the Commitments have been terminated,
Lenders having more than 66.6% of the aggregate principal amount of the
Obligations outstanding (taking into account in each case Participation
Interests or obligation to participate therein); provided that, in making a
determination of Required Lenders, there shall be excluded the Commitments of,
and outstanding principal amount of Obligations (taking into account
Participation Interests therein) owing to, any Lender that, at the time in
question, (i) has failed to make a Loan or purchase a Participation Interest
required pursuant to the terms of this Agreement within one Business Day of when
due, (ii) other than as set forth in subdivision (i) above, has failed to pay to
the Administrative Agent or any Lender an amount owed by such Lender pursuant to
the terms of this Agreement within one Business Day of when due, unless such
amount is subject to a good faith dispute, or (iii) has been deemed insolvent or
has become subject to a bankruptcy or insolvency proceeding or with respect to
which (or with respect to any of the assets of which) a receiver, trustee or
similar official has been appointed.

         "Requirement of Law" means, as to any Person, any requirement or
provision of the Charter Documents of such Person, or of any law, statute, rule,
regulation, code or ordinance, or of any order, decree, judgment, injunction or
other determination of an arbitrator or a court or other Governmental Authority,
in each case applicable to or binding upon such Person or to which any of its
material Properties is subject.

         "Revolving Commitment" means, with respect to each Lender, the
commitment of such Lender to make Revolving Loans in an aggregate principal
amount at any time outstanding of up to such Lender's Revolving Committed
Amount, as such amount may be reduced from time to time in accordance with the
provisions hereof.

         "Revolving Commitment Percentage" means, for each Lender, a fraction
(expressed as a percentage), the numerator of which is the Revolving Committed
Amount of such Lender at such time and the denominator of which is the Aggregate
Revolving Committed Amount at such time.




                                       15


The initial Revolving Commitment Percentages are set out on the signature pages
to this Agreement.

         "Revolving Commitment Termination Date" means the date which is 364
days following the Closing Date, or such later date to which the Revolving
Commitment Termination Date may be extended from time to time pursuant to
Section 2.5(c).

         "Revolving Committed Amount" means the amount of each Lender's
Revolving Commitment as set out on the signature pages to this Agreement.

         "Revolving Loans" has the meaning assigned to such term in Section
2.1(a).

         "Revolving Obligations" means, collectively, the Revolving Loans, the
Swingline Loans and the LOC Obligations.

         "Sale/Leaseback Transaction" means any arrangement pursuant to which
any member of the Consolidated Group, directly or indirectly, becomes liable as
lessee, guarantor or other surety with respect to any lease, whether an
Operating Lease or a Capital Lease, of any Property (i) which such member of the
Consolidated Group has sold or transferred (or is to sell or transfer) to, or
arranged the purchase by, a Person which is not a member of the Consolidated
Group or (ii) which such member of the Consolidated Group intends to use for
substantially the same purpose as any other Property which has been sold or
transferred (or is to be sold or transferred) by such member of the Consolidated
Group to another Person which is not a member of the Consolidated Group in
connection with such lease.

         "SEC" means the Securities and Exchange Commission, or any agency which
succeeds to its functions.

         "Securities Exchange Act" means the Securities Exchange Act of 1934, as
amended.

         "Single Employer Plan" means any Plan which is covered by Title IV of
ERISA, but which is not a Multiemployer Plan or a Multiple Employer Plan.

         "Spinoff/Merger" means the proposed series of transactions (i) reported
by the Parent in its Current Report on Form 8-K dated February 25, 2002, and
filed with the SEC pursuant to which (A) the Parent will transfer to Cimarex
certain assets primarily related to the oil and gas exploration, production,
marketing and sales operations of the Parent, (B) Cimarex will assume certain
liabilities of the Parent, and (C) the Parent will distribute to its
stockholders approximately 0.53 shares of common stock of Cimarex for each share
of common stock of the Parent, and (ii) contemplated by (A) the Agreement and
Plan of Merger dated as of February 3, 2002, by and among the Parent, Cimarex,
Mountain Acquisition Co. and Key Production Company, Inc., (B) the Distribution
Agreement by and between the Parent and Cimarex, and (C) any agreement
referenced in the agreements referred to in the foregoing Agreement and Plan of
Merger and Distribution Agreement.



                                       16


         "Subsidiary" means, as to any Person at any time, (i) any corporation
more than 50% of whose Capital Stock of any class or classes having by the terms
thereof ordinary voting power to elect a majority of the directors of such
corporation (irrespective of whether or not at such time, any class or classes
of such corporation shall have or might have voting power by reason of the
happening of any contingency) is at such time owned by such Person directly or
indirectly through Subsidiaries, and (ii) any partnership, association, joint
venture or other entity of which such Person directly or indirectly through
Subsidiaries owns at such time more than 50% of the Capital Stock; provided that
no Plan shall be considered to be a Subsidiary of the Parent or the Borrower.

         "Subsidiary Guaranty" means the Guaranty Agreement, substantially in
the form attached hereto as Exhibit "B," to be given by the Material
Subsidiaries in favor of the Lenders and the Administrative Agent with respect
to the obligations of the Borrower under the Credit Documents, as amended or
modified from time to time.

         "Subsidiary Guaranty Joinder Agreement" means the Joinder Agreement,
substantially in the form of Schedule 1 to the Subsidiary Guaranty, to be
executed and delivered by each new Material Subsidiary in accordance with the
provisions of Section 7.13.

         "Swingline Commitment" means the commitment of the Swingline Lender to
make Swingline Loans in an aggregate principal amount at any time outstanding up
to the Swingline Committed Amount and the commitment of the Lenders to purchase
participation interests in the Swingline Loans up to their respective Revolving
Commitment Percentage as provided in Section 2.1(c), as such amounts may be
reduced from time to time in accordance with the provisions hereof.

         "Swingline Committed Amount" means the sum of $10,000,000.

         "Swingline Lender" means Bank of Oklahoma.

         "Swingline Loan" means a swingline revolving loan made by the Swingline
Lender pursuant to the provisions of Section 2.1(c).

         "Synthetic Lease" means any synthetic lease, tax retention operating
lease, off-balance sheet loan or similar off-balance sheet financing product
where such transaction is considered borrowed money indebtedness for tax
purposes but is classified as an Operating Lease under GAAP.

         "Taxes" has the meaning assigned to such term in Section 4.6.

         "Term Loans" means the Term Loans into which the Revolving Loans
outstanding on the Revolving Commitment Termination Date shall be converted, as
provided in Section 2.1(d).

         "UCC" means the Uniform Commercial Code as in effect from time to time
in the State of Oklahoma or other applicable jurisdiction.

         "Voting Stock" means, with respect to any Person, Capital Stock issued
by such Person the holders of which are ordinarily, in the absence of
contingencies, entitled to vote for the election of




                                       17


directors (or persons performing similar functions) of such Person, even though
the right so to vote has been suspended by the happening of such a contingency.

         1.2 Construction and Interpretation. For purposes of this Agreement,
the following rules of construction shall apply, unless elsewhere specifically
indicated to the contrary: (i) all terms defined herein in the singular shall
include the plural, as the context requires, and vice-versa; (ii) pronouns
stated in the neuter gender shall include the masculine, the feminine and the
neuter genders; (iii) for purposes of the computation of periods of time
hereunder, the word "from" means "from and including" and the words "to" and
"until" each mean "to but excluding"; (iv) the term "or" is not exclusive; (iv)
the term "including" (or any form thereof) shall not be limiting or exclusive;
(vi) references to article and sections are references to the respective
articles and sections of this Agreement, and references to exhibits and
schedules are references to the exhibits and schedules attached to this
Agreement; (vii) all references to this Agreement or any of the other Credit
Documents shall include any and all modifications, amendments or supplements
hereto or thereto and any and all renewals and extensions hereof or thereof; and
(viii) references to specific provisions or sections of statutes and other laws
(such as the Bankruptcy Code, ERISA and the IRC) shall be construed also to
refer to any successor provisions or sections.

         1.3 Accounting Terms. Except as otherwise expressly provided herein,
all accounting terms used herein shall be interpreted, and all financial
statements and certificates and reports as to financial matters required to be
delivered to the Lenders hereunder shall be prepared, in accordance with GAAP
applied on a consistent basis. All calculations made for the purposes of
determining compliance with this Agreement shall (except as otherwise expressly
provided herein) be made by application of GAAP applied on a basis consistent
with the most recent annual or quarterly financial statements delivered pursuant
to Section 7.1.

                                   ARTICLE II
                          TERMS OF THE CREDIT FACILITY

         2.1 Commitments.

                  (a) Revolving Commitments. During the Commitment Period, and
         subject to the terms and conditions of this Agreement, each Lender
         severally agrees to make revolving loans (the "Revolving Loans") to the
         Borrower from time to time in amounts not to exceed at any time such
         Lender's Revolving Commitment, minus its Revolving Commitment
         Percentage of the sum of (x) all LOC Obligations then outstanding and
         (y) the aggregate principal amount of all Swingline Loans then
         outstanding. At no time shall the aggregate principal amount of
         Revolving Loans outstanding hereunder, together with all other
         Revolving Obligations then outstanding, exceed the Aggregate Revolving
         Credit Commitment, and with regard to each Lender individually, such
         Lender's Revolving Commitment Percentage of the Revolving Loans and
         other Revolving Obligations at any time outstanding shall not exceed
         such Lender's Revolving Committed Amount. The Revolving Loans may
         consist of Prime Rate Loans or LIBOR Rate Loans, or a combination
         thereof, as the Borrower may from time to time request, and may be
         repaid



                                       18


         and reborrowed in accordance with the provisions hereof. No Lender
         shall be responsible for any failure by any other Lender to perform its
         obligation to make any Revolving Loan hereunder nor shall the Revolving
         Commitment of any Lender be increased or decreased as a result of any
         such failure. The Revolving Commitments of the Lenders shall expire on
         the Revolving Commitment Termination Date.

                  (b) Letter of Credit Sublimit Commitment. During the
         Commitment Period, and subject to the terms and conditions of this
         Agreement and the LOC Documents, if any, the Issuing Lender shall
         issue, and the Lenders shall severally participate in, such Letters of
         Credit as the Borrower may request, in form acceptable to the Issuing
         Lender, for the purposes hereinafter set forth; provided that the
         aggregate amount of LOC Obligations shall not at any time exceed the
         LOC Committed Amount. The renewal or extension of any outstanding
         Letter of Credit shall, for purposes hereof, be treated in all respects
         the same as the issuance of a new Letter of Credit hereunder; provided
         that the Issuing Lender may renew or extend outstanding Letters of
         Credit (but shall not issue new Letters of Credit) after the expiration
         of the Commitment Period. Letters of Credit issued hereunder (including
         renewals and extensions) shall have an expiry date which in any event
         does not extend beyond the date which is five Business Days prior to
         the Facility Maturity Date.

                  (c) Swingline Sublimit Commitment. During the Commitment
         Period, and subject to the terms and conditions of this Agreement, the
         Swingline Lender agrees to make certain revolving loans (the "Swingline
         Loans") to the Borrower; provided that the aggregate principal amount
         of Swingline Loans at any time outstanding shall not exceed the
         Swingline Committed Amount. All Swingline Loans shall be Prime Rate
         Loans, and may be repaid and reborrowed in accordance with the
         provisions hereof.

                  (d) Term Loan Commitment. On the Revolving Commitment
         Termination Date, and subject to the terms and conditions of this
         Agreement and provided that no Event of Default has occurred and is
         then continuing, each Lender severally agrees, automatically and
         without any request from the Borrower, to make a term loan (each a
         "Term Loan," and collectively, the "Term Loans"), in the principal
         amount equal to its Revolving Commitment Percentage of the aggregate
         Revolving Loans outstanding at the close of business on the Revolving
         Commitment Termination Date. The Term Loans may be comprised of Prime
         Rate Loans or LIBOR Rate Loans, or a combination thereof, as the
         Borrower may from time to time request. Amounts repaid on the Term
         Loans may not be reborrowed. Except as provided in Section 2.6(c), no
         borrowings may be requested under the Term Loans after the conversion
         of the Revolving Loans outstanding at the close of business on the
         Revolving Commitment Termination Date.

         2.2 Method of Borrowing; Use of Proceeds.

                  (a) Notice of Request for Extensions of Credit. The Borrower
         shall request an Extension of Credit as follows:



                                       19


                           (i) Revolving Loans. In the case of a request for
                  Revolving Loans, by delivering a written Notice of Borrowing
                  (or by giving telephonic notice promptly confirmed by a Notice
                  of Borrowing in writing) to the Administrative Agent not later
                  than 11:00 a.m. (Tulsa, Oklahoma time) on the Business Day
                  prior to the date of the requested borrowing in the case of
                  Prime Rate Loans, and on the third Business Day prior to the
                  date of the requested borrowing in the case of LIBOR Rate
                  Loans. Each Notice of Borrowing shall be irrevocable and shall
                  specify (A) that a Revolving Loan is requested, (B) the date
                  of the requested borrowing (which shall be a Business Day),
                  (C) the aggregate principal amount to be borrowed, (D) whether
                  the borrowing is to be comprised of Prime Rate Loans, LIBOR
                  Rate Loans or a combination thereof (it being understood that
                  each Loan extended as a LIBOR Rate Loan shall be in the
                  minimum principal amount of $5,000,000 or in an integral
                  multiple of $500,000 in excess thereof), and (E) if LIBOR Rate
                  Loans are requested, the Interest Period(s) therefor. If the
                  Borrower shall fail to specify the type of loan requested, the
                  Borrower shall be deemed to have requested a Prime Rate Loan,
                  and if the Borrower shall fail to specify the applicable
                  Interest Period in the case of a request for a LIBOR Rate
                  Loan, the Borrower shall be deemed to have requested an
                  Interest Period of 30 days. The Administrative Agent shall
                  give notice to each Lender promptly upon receipt of each
                  Notice of Borrowing pursuant to this Section 2.2(a)(i), the
                  contents thereof and each such Lender's share of any borrowing
                  to be made pursuant thereto.

                           (ii) Letters of Credit. In the case of a request for
                  the issuance or extension of a Letter of Credit, by delivering
                  a Notice of Request for Letter of Credit to the Issuing
                  Lender, with a copy to the Administrative Agent, not later
                  than 11:00 a.m. (Tulsa, Oklahoma time) on the third Business
                  Day prior to the date of the requested issuance or extension
                  (or such shorter period as may be agreed by the Issuing
                  Lender). Each such request for issuance or extension of a
                  Letter of Credit shall be irrevocable and shall specify, among
                  other things, (A) that a Letter of Credit is requested, (B)
                  the date of the requested issuance or extension, (C) the type,
                  amount, expiry date and terms on which the Letter of Credit is
                  to be issued or extended, and (D) the beneficiary.

                           (iii) Swingline Loans. In the case of a request for a
                  Swingline Loan, by delivering a written Notice of Borrowing
                  (or by giving telephonic notice promptly confirmed by a Notice
                  of Borrowing in writing) to the Swingline Lender not later
                  than 11:00 a.m. (Tulsa, Oklahoma time) on the Business Day of
                  the requested borrowing. Each such request for borrowing shall
                  be irrevocable and shall specify (A) that a Swingline Loan is
                  requested, (B) the date of the requested borrowing (which
                  shall be a Business Day), (C) the aggregate principal amount
                  to be borrowed, and (D) the requested maturity. Each Swingline
                  Loan shall have a maturity date as the Borrower may request
                  and the Swingline Lender may agree, but in no event shall the
                  term of any Swingline Loan be longer than 10 days from the
                  date of borrowing.



                                       20


                  (b) Minimum Amounts. Each request for a Revolving Loan shall
         be in the minimum principal amount of $5,000,000 (or the remaining
         Aggregate Revolving Committed Amount, if less than $5,000,000, but only
         if the request is for a Prime Rate Loan), or in an integral multiple of
         $500,000 in excess thereof. Each request for a Swingline Loan shall be
         in the minimum principal amount of $500,000 (or the remaining Aggregate
         Revolving Committed Amount, if less than $500,000), or in an integral
         multiple of $250,000 in excess thereof.

                  (c) Use of Proceeds. Proceeds of the Revolving Loans and
         Swingline Loans shall be used by the Borrower for working capital and
         general corporate purposes of the Consolidated Group, including capital
         expenditures. The proceeds of the initial Revolving Loan shall be used
         to repay the existing revolving loans, if any, made by Bank of Oklahoma
         to the Parent.

                  (d) Maximum Number of LIBOR Rate Loans. Not more than 10 LIBOR
         Rate Loans (whether as original borrowings or as continuations or
         conversions pursuant to Section 2.3) may be outstanding at any time.
         For purposes of this Section 2.2(d), a LIBOR Rate Loan may consist of
         an original borrowing and a continuation and/or conversion pursuant to
         Section 2.3 and may be considered a single LIBOR Rate Loan, provided
         that the borrowing and the continuation/conversion are made on the same
         day and have the same Interest Period.

         2.3 Continuation and Conversion. The Borrower shall have the option, on
any Business Day, to extend existing Loans into a subsequent permissible
Interest Period or to convert Loans into Loans of another interest rate type;
provided, however, that (i) except as provided in Section 4.3, LIBOR Rate Loans
may be converted into Prime Rate Loans or extended as LIBOR Rate Loans for new
Interest Periods only on the last day of the Interest Period applicable thereto,
(ii) without the consent of the Required Lenders, LIBOR Rate Loans may be
extended, and Prime Rate Loans may be converted into LIBOR Rate Loans, only if
the conditions precedent set forth in Section 5.3 are satisfied on the date of
continuation or conversion, and (iii) Loans converted into LIBOR Rate Loans
shall be in the minimum principal amount of $5,000,000 or in integral multiple
of $500,000 in excess thereof. Each such continuation or conversion shall be
effected by the Borrower by giving a Notice of Continuation/Conversion (or
telephonic notice promptly confirmed in writing) to Administrative Agent prior
to 11:00 a.m. (Tulsa, Oklahoma time) on the Business Day of, in the case of the
conversion of a LIBOR Rate Loan into a Prime Rate Loan, and on the third
Business Day prior to, in the case of the continuation of a LIBOR Rate Loan as,
or conversion of a Prime Rate Loan into, a LIBOR Rate Loan, the date of the
proposed continuation or conversion, specifying the date of the proposed
continuation or conversion, the Loans to be so continued or converted, the types
of Loans into which such Loans are to be converted and, if appropriate, the
applicable Interest Periods with respect thereto. If the Borrower shall fail to
specify the applicable Interest Period in the case of a request for continuation
of a LIBOR Rate Loan as, or conversion of a Prime Rate Loan into, a LIBOR Rate
Loan, the Borrower shall be deemed to have requested an Interest Period of 30
days. Each request for continuation or conversion shall be irrevocable and shall
constitute a representation and warranty by the Borrower of the matters
specified in




                                       21


subsections (a), (b), (c) and (d) of Section 5.3. In the event the Borrower
fails to request continuation or conversion of any LIBOR Rate Loan in accordance
with this Section 2.3, or any such conversion or continuation is not permitted
or required by this Section, then such LIBOR Rate Loan shall be automatically
converted into a Prime Rate Loan at the end of the Interest Period applicable
thereto. The Administrative Agent shall give each Lender notice as promptly as
practicable of any such proposed extension or conversion affecting any Loan.

         2.4 Notes. The Loans from time to time outstanding shall be evidenced
by the Notes, which shall be made, executed and delivered by the Borrower
payable to the order of the respective Lenders on or before the Closing Date.





                                       22



         2.5 Reduction, Termination and Extension of Revolving Commitments.

                  (a) Voluntary Reduction of Revolving Commitments. The
         Revolving Commitments may be terminated or permanently reduced in whole
         or in part upon three (3) Business Days' prior written notice to the
         Administrative Agent, provided that (i) after giving effect to any
         voluntary reduction, the aggregate amount of Revolving Obligations
         shall not exceed the Aggregate Revolving Committed Amount, as reduced,
         and (ii) partial reductions shall be in a minimum principal amount of
         $5,000,000 and in integral multiples of $1,000,000 in excess thereof.

                  (b) Termination of Revolving Commitments. The Revolving
         Commitments hereunder shall terminate on the Revolving Commitment
         Termination Date.

                  (c) Extension of Revolving Commitment Termination Date. By
         submitting a request for extension to the Administrative Agent (an
         "Extension Request") at least 60 days prior to the then-current
         Revolving Commitment Termination Date, the Borrower may request that
         the Lenders extend the Facility (and correspondingly, the Revolving
         Commitment Termination Date and the Facility Maturity Date) for an
         additional period of 364 days beyond the then-current Revolving
         Commitment Termination Date and Facility Maturity Date. The Lenders
         agree to consider each Extension Request, but no Extension Request
         shall be approved unless it is agreed to by all of the Lenders. The
         Administrative Agent shall give the Borrower notice of the Lenders'
         decision with respect to the Borrower's Extension Request not less than
         15 days prior to the then-current Revolving Commitment Termination
         Date; provided, however, that if the Administrative Agent fails to
         notify the Borrower of the Lenders' decision, the Extension Request
         will be deemed not to have been approved. In the event that the Lenders
         approve the Extension Request, (i) the Revolving Commitment Termination
         Date and the Facility Maturity Date shall each be extended for an
         additional period of 364 days, and (ii) the terms and provisions of
         this Agreement shall continue in full force and effect, except as may
         otherwise be agreed in writing by the Borrower, the Lenders and the
         Administrative Agent. Notwithstanding the foregoing, the Lenders shall
         not be obligated, and nothing contained in this Agreement shall be
         construed as obligating the Lenders, to agree or consent to any
         extension request, and any determination by the Lenders not to consent
         to any Extension Request shall be final.

         2.6 Additional Provisions Relating to Letters of Credit.

                  (a) Participation. Each Lender, with respect to the
         outstanding letters of credit identified on Schedule 2.6(a) (the
         "Existing Letters of Credit"), hereby purchases, without recourse to
         the Issuing Lender, a risk participation in such Existing Letters of
         Credit and the obligations arising thereunder, and with respect to
         Letters of Credit issued on or after the Closing Date, upon issuance of
         a Letter of Credit, shall be deemed to have purchased, without recourse
         to the Issuing Lender, a risk participation from the Issuing Lender in
         such Letter of Credit and the obligations arising thereunder, in each
         case in an amount equal to its pro rata share of the obligations under
         such Letter of Credit (based on the res-



                                       23


         pective Percentages of the Lenders) and shall absolutely,
         unconditionally and irrevocably assume, as primary obligor and not as
         surety, and be obligated to pay to the Issuing Lender therefor and
         discharge when due, its pro rata share of the obligations arising under
         such Letter of Credit. Without limiting the scope and nature of each
         Lender's participation in any Letter of Credit, to the extent that the
         Issuing Lender has not been reimbursed as required hereunder or under
         any such Letter of Credit, each Lender shall pay to the Issuing Lender
         its pro rata share of such unreimbursed drawing in same day funds on
         the day of notification by the Issuing Lender of an unreimbursed
         drawing pursuant to the provisions of subsection (c) of this Section
         2.6. The obligation of each Lender to so reimburse the Issuing Lender
         shall be absolute and unconditional and shall not be affected by the
         occurrence of a Default, an Event of Default or any other occurrence or
         event. Any such reimbursement shall not relieve or otherwise impair the
         obligation of the Borrower to reimburse the Issuing Lender under any
         Letter of Credit, together with interest as hereinafter provided.

                  (b) Reimbursement. In the event of any drawing under any
         Letter of Credit, the Issuing Lender will promptly notify the Borrower.
         Unless the Borrower shall immediately notify the Issuing Lender that
         the Borrower intends to otherwise reimburse the Issuing Lender for such
         drawing, the Borrower shall be deemed to have requested that the
         Lenders make a Revolving Loan (or to increase the amount of their
         outstanding Term Loans) in the amount of the drawing as provided in
         subsection (c) hereof on the related Letter of Credit, the proceeds of
         which will be used to satisfy the related reimbursement obligations.
         The Borrower promises to reimburse the Issuing Lender on the day of
         drawing under any Letter of Credit (either with the proceeds of a Loan
         obtained hereunder or otherwise) in same day funds. If the Borrower
         shall fail to reimburse the Issuing Lender as provided hereinabove, the
         unreimbursed amount of such drawing shall bear interest at a per annum
         rate equal to the Prime Rate plus the sum of (i) the Applicable Margin
         and (ii) two percent (2%). The Borrower's reimbursement obligations
         hereunder shall be absolute and unconditional under all circumstances
         irrespective of any rights of setoff, counterclaim or defense to
         payment the Borrower may claim or have against the Issuing Lender, the
         Administrative Agent, the Lenders, the beneficiary of the Letter of
         Credit drawn upon or any other Person, including any defense based on
         any failure of the Borrower or any other Credit Party to receive
         consideration or the legality, validity, regularity or unenforceability
         of the Letter of Credit. The Issuing Lender will promptly notify the
         other Lenders of the amount of any unreimbursed drawing and each Lender
         shall promptly pay to the Administrative Agent for the account of the
         Issuing Lender in Dollars and in immediately available funds, the
         amount of such Lender's Percentage of such unreimbursed drawing. Such
         payment shall be made on the day such notice is received by such Lender
         from the Issuing Lender if such notice is received at or before 12:00
         noon (Tulsa, Oklahoma time); otherwise, such payment shall be made at
         or before 11:00 a.m. (Tulsa, Oklahoma time) on the Business Day next
         succeeding the day such notice is received. If such Lender does not pay
         such amount to the Issuing Lender in full upon such request, such
         Lender shall, on demand, pay to the Administrative Agent for the
         account of the Issuing Lender interest on the unpaid amount during the
         period from the date of such drawing until such Lender pays such amount
         to the Issuing Lender in full at a




                                       24


         rate per annum equal to, if paid within two Business Days of the date
         that such Lender is required to make payments of such amount pursuant
         to the preceding sentence, the Federal Funds Rate and thereafter at a
         rate equal to the Prime Rate. Each Lender's obligation to make such
         payment to the Issuing Lender, and the right of the Issuing Lender to
         receive the same, shall be absolute and unconditional, shall not be
         affected by any circumstance whatsoever and without regard to the
         termination of this Agreement or the Commitments hereunder, the
         existence of a Default or Event of Default or the acceleration of the
         obligations of the Borrower hereunder and shall be made without any
         offset, abatement, withholding or reduction whatsoever. Simultaneously
         with the making of each such payment by a Lender to the Issuing Lender,
         such Lender shall, automatically and without any further action on the
         part of the Issuing Lender or such Lender, acquire a Participation
         Interest in the unreimbursed drawing in an amount equal to such payment
         (excluding the portion of such payment, if any, constituting interest
         owing to the Issuing Lender).

                  (c) Repayment with Revolving Loan or Term Loan Increase. On
         any day on which the Borrower shall have requested, or been deemed to
         have requested, a Revolving Loan advance or a Term Loan increase to
         reimburse a drawing under a Letter of Credit, the Administrative Agent
         shall give notice to the Lenders that a Revolving Loan or a Term Loan
         increase has been requested or deemed requested by the Borrower to be
         made in connection with a drawing under a Letter of Credit, in which
         case a Revolving Loan advance or Term Loan increase comprised of Prime
         Rate Loans (or LIBOR Rate Loans to the extent the Borrower has complied
         with the procedures of Section 2.2(a)(i) with respect thereto) shall be
         immediately made to the Borrower by all Lenders (notwithstanding any
         termination of the Commitments pursuant to Section 9.2) pro rata based
         on the respective Percentages of the Lenders (determined before giving
         effect to any termination of the Commitments pursuant to Section 9.2)
         and the proceeds thereof shall be paid directly to the Issuing Lender
         for application to the respective LOC Obligations. Each Lender hereby
         irrevocably agrees to make its pro rata share of each such Revolving
         Loan or Term Loan increase immediately upon any such request or deemed
         request in the amount, in the manner and on the date specified in the
         preceding sentence notwithstanding (i) the amount of such borrowing may
         not comply with the minimum amount for advances of Revolving Loans
         otherwise required hereunder, (ii) whether any conditions specified in
         Section 5.3 are then satisfied, (iii) whether a Default or an Event of
         Default then exists, (iv) failure for any such request or deemed
         request for Revolving Loan or Term Loan increase to be made by the time
         otherwise required hereunder, (v) whether the date of such borrowing is
         a date on which Revolving Loans are otherwise permitted to be made
         hereunder or (vi) any termination of the Commitments relating thereto
         immediately prior to or contemporaneously with such borrowing. In the
         event that any Revolving Loan or Term Loan increase cannot for any
         reason be made on the date otherwise required above (including as a
         result of the commencement of a proceeding under the Bankruptcy Code
         with respect to the Borrower or any Credit Party), then each such
         Lender hereby agrees that it shall forthwith purchase (as of the date
         such borrowing would otherwise have occurred, but adjusted for any
         payments received from the Borrower on or after such date and prior to
         such purchase)




                                       25


         from the Issuing Lender such participation in the outstanding LOC
         Obligations as shall be necessary to cause each such Lender to share in
         such LOC Obligations ratably (based upon the respective Percentages of
         the Lenders (determined before giving effect to any termination of the
         Commitments pursuant to Section 9.2)), provided that in the event such
         payment is not made on the day of drawing, such Lender shall pay in
         addition to the Issuing Lender interest on the amount of its unfunded
         Participation Interest at a rate equal to, if paid within two Business
         Days of the date of drawing, the Federal Funds Rate, and thereafter at
         the Prime Rate.

                  (d) Terms of Letters of Credit. Each Letter of Credit shall be
         a standby letter of credit issued for the purpose stated in the
         applicable Notice of Request for Letter of Credit. Notwithstanding
         anything to the contrary set forth in this Agreement, including Section
         2.2(a)(ii) hereof, a Letter of Credit issued hereunder may contain a
         statement to the effect that such Letter of Credit is issued for the
         account of a Credit Party, provided that notwithstanding such
         statement, the Borrower shall be the actual account party for all
         purposes of this Agreement for such Letter of Credit and such statement
         shall not affect the Borrower's reimbursement obligations hereunder
         with respect to such Letter of Credit. The Issuing Lender may issue the
         Letters of Credit subject to The Uniform Customs and Practice for
         Documentary Credits, as published as of the date of issue by the
         International Chamber of Commerce.

                  (e) Indemnification; Nature of Issuing Lender's Duties. In
         addition to its other obligations under this Section 2.6, the Borrower
         hereby agrees to protect, indemnify, pay and save the Issuing Lender
         harmless from and against any and all claims, demands, liabilities,
         damages, losses, costs, charges and expenses (including reasonable
         attorneys' fees) that the Issuing Lender may incur or be subject to as
         a consequence, direct or indirect, of (A) the issuance of any Letter of
         Credit or (B) the failure of the Issuing Lender to honor a drawing
         under a Letter of Credit as a result of any act or omission, whether
         rightful or wrongful, of any Governmental Authority (all such acts or
         omissions, herein called "Government Acts"). As between the Borrower
         and the Issuing Lender, the Borrower shall assume all risks of the
         acts, omissions or misuse of any Letter of Credit by the beneficiary
         thereof. The Issuing Lender shall not be responsible: (A) for the form,
         validity, sufficiency, accuracy, genuineness or legal effect of any
         document submitted by any party in connection with the application for
         and issuance of any Letter of Credit, even if it should in fact prove
         to be in any or all respects invalid, insufficient, inaccurate,
         fraudulent or forged; (B) for the validity or sufficiency of any
         instrument transferring or assigning or purporting to transfer or
         assign any Letter of Credit or the rights or benefits thereunder or
         proceeds thereof, in whole or in part, that may prove to be invalid or
         ineffective for any reason; (C) for errors, omissions, interruptions or
         delays in transmission or delivery of any messages, by mail, cable,
         telegraph, telex or otherwise, whether or not they be in cipher; (D)
         for any loss or delay in the transmission or otherwise of any document
         required in order to make a drawing under a Letter of Credit or of the
         proceeds thereof; and (E) for any consequences arising from causes
         beyond the control of the Issuing Lender, including any Government
         Acts. None of the above shall affect, impair, or prevent the vesting of
         the Issuing Lender's rights or powers hereunder. In



                                       26


         furtherance and extension and not in limitation of the specific
         provisions set forth in this subsection (e), any action taken or
         omitted by the Issuing Lender, under or in connection with any Letter
         of Credit or the related certificates, if taken or omitted in good
         faith, shall not put such Issuing Lender under any resulting liability
         to the Borrower or any other Credit Party. It is the intention of the
         parties that this Agreement shall be construed and applied to protect
         and indemnify the Issuing Lender against any and all risks involved in
         the issuance of the Letters of Credit, all of which risks are hereby
         assumed by the Borrower (on behalf of itself and each of the other
         Credit Parties), including any and all Government Acts. The Issuing
         Lender shall not, in any way, be liable for any failure by the Issuing
         Lender or anyone else to pay any drawing under any Letter of Credit as
         a result of any Government Acts or any other cause beyond the control
         of the Issuing Lender. Nothing in this subsection (e) is intended to
         limit the reimbursement obligations of the Borrower contained in
         subsection (b) above. The obligations of the Borrower under this
         subsection (e) shall survive the termination of this Agreement. No act
         or omissions of any current or prior beneficiary of a Letter of Credit
         shall in any way affect or impair the rights of the Issuing Lender to
         enforce any right, power or benefit under this Agreement.
         Notwithstanding anything to the contrary contained in this subsection
         (e), the Borrower shall have no obligation to indemnify the Issuing
         Lender in respect of any liability incurred by the Issuing Lender (A)
         arising out of the gross negligence or willful misconduct of the
         Issuing Lender, as determined by a court of competent jurisdiction, or
         (B) caused by the Issuing Lender's failure to pay under any Letter of
         Credit after presentation to it of a request strictly complying with
         the terms and conditions of such Letter of Credit, as determined by a
         court of competent jurisdiction, unless such payment is prohibited by
         any law, regulation, court order or decree.

                  (f) Responsibility of Issuing Lender. It is expressly
         understood and agreed that the obligations of the Issuing Lender
         hereunder to the Lenders are only those expressly set forth in this
         Agreement and that the Issuing Lender shall be entitled to assume that
         the conditions precedent set forth in Section 5.3 have been satisfied
         unless it shall have acquired actual knowledge that any such condition
         precedent has not been satisfied; provided, however, that nothing set
         forth in this Section 2.6 shall be deemed to prejudice the right of any
         Lender to recover from the Issuing Lender any amounts made available by
         such Lender to the Issuing Lender pursuant to this Section 2.6 in the
         event that it is determined by a court of competent jurisdiction that
         the payment with respect to a Letter of Credit constituted gross
         negligence or willful misconduct on the part of the Issuing Lender.

                  (g) Reports. The Issuing Lender will provide to the
         Administrative Agent for dissemination to the Lenders at least
         quarterly, and more frequently upon request, a detailed summary report
         on its Letters of Credit and the activity thereon, including, among
         other things, the Credit Party for whose account the Letter of Credit
         is issued, the beneficiary, the face amount, and the expiry date. The
         Issuing Lender will provide copies of the Letters of Credit to the
         Administrative Agent and the Lenders promptly upon request.



                                       27


                  (h) Conflict with LOC Documents. Solely as among the parties
         hereto, in the event of any conflict between this Agreement and any LOC
         Document (including any letter of credit application), this Agreement
         shall control.

         2.7 Additional Provisions Relating to Swingline Loans. The Swingline
Lender may, at any time, in its sole discretion, by written notice to the
Borrower and the Lenders, demand repayment of its Swingline Loans by way of a
Revolving Loan advance, in which case the Borrower shall be deemed to have
requested a Revolving Loan advance comprised solely of Prime Rate Loans in the
amount of such Swingline Loans; provided, however, that any such demand shall be
deemed to have been given one Business Day prior to the Revolving Commitment
Termination Date and on the date of the occurrence of any Event of Default
described in Section 9.1 and upon acceleration of the indebtedness hereunder and
the exercise of remedies in accordance with the provisions of Section 9.2. Each
Lender hereby irrevocably agrees to make its Revolving Commitment Percentage of
each such Revolving Loan in the amount, in the manner and on the date specified
in the preceding sentence notwithstanding (i) the amount of such borrowing may
not comply with the minimum amount for advances of Revolving Loans otherwise
required hereunder, (ii) whether any conditions specified in Section 5.3 are
then satisfied, (iii) whether a Default or an Event of Default then exists, (iv)
failure of any such request or deemed request for Revolving Loan to be made by
the time otherwise required hereunder, (v) whether the date of such borrowing is
a date on which Revolving Loans are otherwise permitted to be made hereunder or
(vi) any termination of the Commitments relating thereto immediately prior to or
contemporaneously with such borrowing. In the event that any Revolving Loan
cannot for any reason be made on the date otherwise required above (including as
a result of the commencement of a proceeding under the Bankruptcy Code with
respect to the Borrower or any other Credit Party), then each Lender hereby
agrees that it shall forthwith purchase (as of the date such borrowing would
otherwise have occurred, but adjusted for any payments received from the
Borrower on or after such date and prior to such purchase) from the Swingline
Lender such Participation Interests in the outstanding Swingline Loans as shall
be necessary to cause each such Lender to share in such Swingline Loans ratably
based upon its Revolving Commitment Percentage of the Revolving Committed Amount
(determined before giving effect to any termination of the Commitments pursuant
to Section 9.2), provided that (A) all interest payable on the Swingline Loans
shall be for the account of the Swingline Lender until the date as of which the
respective Participation Interest is funded and (B) at the time any purchase of
Participation Interests pursuant to this sentence is actually made, the
purchasing Lender shall be required to pay to the Swingline Lender, to the
extent not paid to the Swingline Lender by the Borrower in accordance with the
terms of Section 3.3(b), interest on the principal amount of Participation
Interests purchased for each day from and including the day upon which such
borrowing would otherwise have occurred to but excluding the date of payment for
such Participation Interests, at the rate equal to the Federal Funds Rate.

         2.8 Pro Rata Treatment. Except to the extent otherwise provided herein:



                                       28


                  (a) Loans. Each Revolving Loan advance, each payment or
         prepayment of principal of any Loan (other than Swingline Loans) or
         reimbursement obligations arising from drawings under Letters of
         Credit, each payment of interest on the Loans (other than Swingline
         Loans) or reimbursement obligations arising from drawings under Letters
         of Credit, each payment of Non-Use Fees, each payment of Letter of
         Credit Fees, each reduction of the Revolving Committed Amount and each
         conversion or extension of any Loan (other than Swingline Loans) shall
         be allocated pro rata among the Lenders in accordance with the
         respective Revolving Commitment Percentages.

                  (b) Advances. No Lender shall be responsible for the failure
         or delay by any other Lender in its obligation to make its ratable
         share of a borrowing hereunder; provided, however, that the failure of
         any Lender to fulfill its obligations hereunder shall not relieve any
         other Lender of its obligations hereunder. Unless the Administrative
         Agent shall have been notified by any Lender prior to the date of any
         requested borrowing that such Lender does not intend to make available
         to the Administrative Agent its ratable share of such borrowing to be
         made on such date, the Administrative Agent may assume that such Lender
         has made such amount available to the Administrative Agent on the date
         of such borrowing, and the Administrative Agent in reliance upon such
         assumption, may (in its sole discretion but without any obligation to
         do so) make available to the Borrower a corresponding amount. If such
         corresponding amount is not in fact made available to the
         Administrative Agent, the Administrative Agent shall be able to recover
         such corresponding amount from such Lender. If such Lender does not pay
         such corresponding amount forthwith upon the Administrative Agent's
         demand therefor, the Administrative Agent will promptly notify the
         Borrower, and the Borrower shall immediately pay such corresponding
         amount to the Administrative Agent. The Administrative Agent shall also
         be entitled to recover from the Lender or the Borrower, as the case may
         be, interest on such corresponding amount in respect of each day from
         the date such corresponding amount was made available by the
         Administrative Agent to the Borrower to the date such corresponding
         amount is recovered by the Administrative Agent at a per annum rate
         equal to (i) from the Borrower at the applicable rate for the
         applicable borrowing pursuant to the Notice of Borrowing and (ii) from
         a Lender at the Federal Funds Rate.

         2.9 Records of Loans. The Administrative Agent shall make reasonable
efforts to maintain an accurate record of (i) the amount, type and Interest
Period of each Loan hereunder, (ii) the amount of any principal or interest due
and payable or to become due and payable to each Lender hereunder, and (iii) the
amount of any sum received by the Administrative Agent hereunder from or for the
account of the Borrower and each Lender's share thereof, and each Lender shall
likewise make reasonable efforts to maintain an accurate record of each Loan
made by such Lender, including the amounts of principal and interest payable and
paid to such Lender from time to time under this Agreement. The entries made by
each Lender in its records, if consistent with the entries made by the
Administrative Agent in its records, shall be prima facie evidence of the
existence and amounts of the obligations of the Borrower therein recorded;
provided, however, that the failure of any Lender or the Administrative Agent to
maintain any




                                       29


such records, or any error therein, shall not in any manner affect the
obligation of the Borrower to repay the Loans and other obligations owing to
such Lender.

                                   ARTICLE III
                          INTEREST, FEES AND REPAYMENT

         3.1 Interest. Subject to the provisions of Article IV, the Loans
hereunder shall bear interest at a per annum rate, payable in arrears on each
applicable Interest Payment Date (or at such other times as may be specified
herein), as follows:

                  (a) Prime Rate Loans. During such periods as the Loans shall
         be comprised of Prime Rate Loans, the sum of the Prime Rate minus the
         Applicable Margin.

                  (b) LIBOR Rate Loans. During such periods as the Loans shall
         be comprised of LIBOR Rate Loans, the sum of the Adjusted LIBOR Rate
         plus the Applicable Margin.

                  (c) Default Rate. Upon the occurrence and during the
         continuation of any Event of Default, the principal of and, to the
         extent permitted by law, interest on the Loans and any other amounts
         owing hereunder or under the other Credit Documents shall bear
         interest, payable on demand, at a per annum rate 2% greater than the
         rate which would otherwise be applicable (or if no rate is applicable,
         whether in respect of interest, fees or other amounts, then the Prime
         Rate plus the then effective Applicable Margin for Prime Rate Loans
         plus 2%.

         3.2 Fees.

                  (a) Non-Use Fee. In consideration of the Revolving
         Commitments, hereunder, the Borrower agrees to pay to the
         Administrative Agent for the benefit of each Lender a non-use fee (the
         "Non-Use Fee") for the period from the Closing Date to the Revolving
         Commitment Termination Date calculated at the rate of 0.15% (15 bps)
         per annum on the average daily unused amount of each Lender's Revolving
         Committed Amount for the applicable period. The Non-Use Fee shall be
         payable quarterly in arrears on the 15th day following the last day of
         each calendar quarter for the immediately preceding quarter (or portion
         thereof) beginning with the first such date to occur after the Closing
         Date and on the Revolving Commitment Termination Date. For purposes of
         computing the Non-Use Fee, outstanding Letters of Credit shall be
         considered usage of the Aggregate Revolving Committed Amount; however,
         outstanding Swingline Loans shall be considered usage of the Revolving
         Committed Amount of Bank of Oklahoma only.

                  (b)      Letter of Credit Fees.

                           (i) Letter of Credit Fee. In consideration of the
                  issuance of each Letter of Credit hereunder, the Borrower
                  promises to pay to the Administrative Agent for the benefit of
                  each Lender a fee (the "Letter of Credit Fee") on each
                  Lender's Percentage of the actual daily maximum amount
                  available to be drawn under each




                                       30


                  outstanding Letter of Credit from the date of its issuance to
                  the date of its stated expiration, computed at a per annum
                  rate for each day equal to the Applicable Margin for LIBOR
                  Rate Loans. The Letter of Credit Fee shall be payable in
                  advance upon the issuance of each Letter of Credit (or, in the
                  case of the Existing Letters of Credit, upon the Closing
                  Date); provided, however, that if any Letter of Credit has a
                  stated expiration of more than one year from the date of
                  issuance (or provides for automatic renewals beyond a period
                  of one year from the date of issuance), the Letter of Fee
                  shall be payable in advance upon issuance for the first year
                  and on each anniversary date for each subsequent year
                  thereafter.

                           (ii) Issuing Lender Fees. In addition to the Letter
                  of Credit Fee payable pursuant to clause (i) above, the
                  Borrower promises to pay to the Issuing Lender, without
                  sharing by the other Lenders, the customary charges from time
                  to time of the Issuing Lender with respect to the issuance,
                  amendment, transfer, administration, cancellation and
                  conversion of, and drawings under, each Letter of Credit.

                           (iii) Default Fee. Upon the occurrence and during the
                  continuation of any Event of Default, the Letter of Credit Fee
                  shall accrue at a per annum rate 2% greater than the rate
                  which would otherwise be applicable.

                  (c) Administrative Fees. The Borrower agrees to pay to the
         Administrative Agent, for its own account, the fees referred to in and
         payable from time to time under the Administrative Agent Fee Letter.

                  (d) Commitment Fees. On the Closing Date, the Borrower agrees
         to pay to the Administrative Agent for the benefit of each of the
         Lenders, the commitment fees referred to in the Fee Letter.

                  (e) Modification Fee. In the event that the Lenders and the
         Administrative Agent are requested to enter into or to approve any
         amendment, modification, interpretation, termination, waiver or consent
         with respect to this Agreement or any of the other Credit Documents,
         other than an extension of the Facility in accordance with Section
         2.5(c), the Borrower shall pay to the Administrative Agent a
         modification fee of $5,000 (in addition to any out-of-pocket expenses
         reimbursable under Section 12.5(a)).

                  3.3      Maturity; Repayment.

                  (a) Swingline Loans. The principal amount of each Swingline
         Loan shall be due and payable on the earlier of (i) the maturity date
         agreed to by the Swingline Lender and the Borrower at the time such
         Swingline Loan is made, but in any event not more than 10 days from the
         date such Swingline Loan was made, and (ii) the Revolving Commitment
         Termination Date.



                                       31


                  (b) Term Loans. The principal amount of all Term Loans
         outstanding shall be due and payable in full on the Facility Maturity
         Date.

         3.4 Prepayments. The Loans may be repaid in whole or in part without
premium or penalty (except, in the case of LIBOR Rate Loans, breakage costs
related to prepayments not made on the last day of the relevant Interest Period,
as provided in Section 4.7) and partial prepayments shall be minimum principal
amounts of $5,000,000 (except Swingline Loans, which may be prepaid in minimum
principal amounts of $500,000), and in integral multiples of $500,000 in excess
thereof. Unless otherwise directed by the Borrower, prepayments on the Loans
shall be applied first to Prime Rate Loans and then to LIBOR Rate Loans in
direct order of Interest Period maturities. Amounts prepaid on the Revolving
Obligations may, subject to the terms and conditions hereof, be reborrowed.
Amounts prepaid on the Term Loans may not be reborrowed.

         3.5 Sharing of Payments. The Lenders agree among themselves that, in
the event that any Lender shall obtain payment in respect of any Loan, LOC
Obligations or any other obligation owing to such Lender under this Agreement
through the exercise of a right of setoff, banker's lien or counterclaim, or
pursuant to a secured claim under Section 506 of the Bankruptcy Code or other
security or interest arising from, or in lieu of, such secured claim, received
by such Lender under any applicable bankruptcy, insolvency or other similar law
or otherwise, or by any other means, in excess of its pro rata share of such
payment as provided for in this Agreement, such Lender shall promptly purchase
from the other Lenders a Participation Interest in such Loans, LOC Obligations
and other obligations in such amounts, and make such other adjustments from time
to time, as shall be equitable to the end that all Lenders share such payment in
accordance with their respective ratable shares as provided for in this
Agreement. The Lenders further agree among themselves that if payment to a
Lender obtained by such Lender through the exercise of a right of setoff,
banker's lien, counterclaim or other event as aforesaid shall be rescinded or
must otherwise be restored, each Lender which shall have shared the benefit of
such payment shall, by repurchase of a Participation Interest theretofore sold,
return its share of that benefit (together with its share of any accrued
interest payable with respect thereto) to each Lender whose payment shall have
been rescinded or otherwise restored. The Borrower agrees that any Lender so
purchasing such a Participation Interest may, to the fullest extent permitted by
law, exercise all rights of payment, including setoff, banker's lien or
counterclaim, with respect to such Participation Interest as fully as if such
Lender were a holder of such Loan, LOC Obligations or other obligation in the
amount of such Participation Interest. Except as otherwise expressly provided in
this Agreement, if any Lender or the Administrative Agent shall fail to remit to
the Administrative Agent or any other Lender an amount payable by such Lender or
the Administrative Agent to the Administrative Agent or such other Lender
pursuant to this Agreement on the date when such amount is due, such payments
shall be made together with interest thereon for each date from the date such
amount is due until the date such amount is paid to the Administrative Agent or
such other Lender at a rate per annum equal to the Federal Funds Rate. If under
any applicable bankruptcy, insolvency or other similar law, any Lender receives
a secured claim in lieu of a setoff to which this Section 3.5 applies, such
Lender shall, to the extent practicable, exercise its rights in respect of such
secured claim in a manner consistent with the




                                       32


rights of the Lenders under this Section 3.5 to share in the benefits of any
recovery on such secured claim.

         3.6 Payments. Except as otherwise specifically provided herein, all
payments hereunder shall be made to the Administrative Agent, at the address
specified in Section 12.1, in Dollars and in immediately available funds,
without setoff, deduction, counterclaim or withholding of any kind, not later
than 11:00 a.m. (Tulsa, Oklahoma time) on the date when due. Payments received
after such time shall be deemed to have been received on the next succeeding
Business Day. The Administrative Agent may (but shall not be obligated to) debit
the amount of any such payment which is not made by such time to any ordinary
deposit account of the Borrower maintained with the Administrative Agent (with
notice to the Borrower). The Borrower shall, at the time it makes any payment
under this Agreement, specify to the Administrative Agent the Loans, LOC
Obligations, Fees, interest or other amounts payable by the Borrower hereunder
to which such payment is to be applied (and in the event that it fails so to
specify, or if such application would be inconsistent with the terms hereof, the
Administrative Agent shall distribute such payment to the Lenders in such manner
as the Administrative Agent may determine to be appropriate in respect of
obligations owing by the Borrower hereunder, subject to the terms of Section
2.8(a)). The Administrative Agent will distribute such payments to such Lenders,
if any such payment is received prior to 11:00 a..m. (Tulsa, Oklahoma time) on a
Business Day in like funds as received prior to the end of such Business Day and
otherwise the Administrative Agent will distribute such payment to such Lenders
on the next succeeding Business Day. Whenever any payment hereunder shall be
stated to be due on a day which is not a Business Day, the due date thereof
shall be extended to the next succeeding Business Day (subject to accrual of
interest and Fees for the period of such extension), except that in the case of
LIBOR Rate Loans, if the extension would cause the payment to be made in the
next following calendar month, then such payment shall instead be made on the
next preceding Business Day.

         3.7 Computations of Interest and Fees. Except as expressly provided
otherwise herein, all computations of interest and fees shall be made on the
basis of actual number of days elapsed over a year of 360 days. Interest shall
accrue from and include the date of borrowing, but exclude the date of payment.

         3.8 Maximum Lawful Interest Rate. It is not the intention of the
Lenders or the Borrower to violate the laws of any applicable jurisdiction
relating to usury or other restrictions on the maximum lawful interest rate. The
Credit Documents and all other agreements between the Borrower and the Lenders,
whether now existing or hereafter arising and whether written or oral, are
hereby limited so that in no event shall the interest paid or agreed to be paid
to the Lenders for the use, forbearance or detention of money loaned, or for the
payment or performance of any covenant or obligation contained herein or in any
other Credit Document, exceed the maximum amount permissible under applicable
law. If from any circumstances whatsoever fulfillment of any provision hereof or
of any other Credit Document, at the time the performance of such provision
shall be due, shall involve transcending the limit of validity prescribed by
law, then, ipso facto, the obligation to be fulfilled shall be reduced to the
limit of such validity. If from any such circumstances the Lenders should ever
receive anything of value deemed interest under applicable law which would
exceed interest at the highest lawful rate, such excessive interest shall be



                                       33


applied to the reduction of the principal amount owing hereunder, and not to the
payment of interest, or if such excessive interest exceeds any unpaid balance of
principal, such excess shall be refunded to the Borrower. All sums paid or
agreed to be paid to the Lenders for the use, forbearance or detention of monies
advances under the Facility shall, to the extent permitted by applicable law, be
amortized, prorated, allocated and spread throughout the full term of the
Obligations until payment in full so that the rate of interest on account of the
Obligations is uniform throughout the term thereof. This Section 3.8 shall
control every other provision of the Credit Documents and all other agreements
between the Lenders and the Borrower contemplated thereby.

                                   ARTICLE IV
         YIELD PROTECTION; OTHER PROVISIONS RELATING TO CREDIT FACILITY

         4.1 Capital Adequacy. If any Lender has determined that, after the
Closing Date, the adoption or the becoming effective of, or any change in, or
any change by any Governmental Authority, central bank or comparable agency
charged with the interpretation or administration thereof in the interpretation
or administration of, any law, rule or regulation regarding capital adequacy
applicable to such Lender (or its parent holding company or its Applicable
Lending Office), or compliance by such Lender (or its parent holding company or
its Applicable Lending Office) with any request or directive regarding capital
adequacy (whether or not having the force of law) of any such Governmental
Authority, central bank or comparable agency, has or would have the effect of
reducing the rate of return on such Lender's capital or assets as a consequence
of its commitments or obligations hereunder to a level below that which such
Lender could have achieved but for such adoption, effectiveness, change or
compliance (taking into consideration such Lender's policies with respect to
capital adequacy), then, upon notice from such Lender to the Borrower, the
Borrower shall be obligated to pay to such Lender such additional amount or
amounts as will compensate such Lender for such reduction. Each determination by
any such Lender of amounts owing under this Section 4.1 shall, absent manifest
error, be conclusive and binding on the parties hereto.

         4.2 Limitation on LIBOR Rate Loans. If on or prior to the first day of
any Interest Period for any LIBOR Rate Loan, (i) the Administrative Agent
determines (which determination shall be conclusive) that by reason of
circumstances affecting the relevant market, adequate and reasonable means do
not exist for ascertaining the Adjusted LIBOR Rate for such Interest Period, or
(ii) the Required Lenders determine (which determination shall be conclusive)
and notify the Administrative Agent that the Adjusted LIBOR Rate will not
adequately and fairly reflect the cost to the Lenders of funding LIBOR Rate
Loans for such Interest Period, then in either of such events the Administrative
Agent shall give the Borrower prompt notice thereof, and so long as such
condition remains in effect, the Lenders shall be under no obligation to make
additional LIBOR Rate Loans, continue LIBOR Rate Loans, or to convert Prime Rate
Loans into LIBOR Rate Loans, and the Borrower shall, on the last day(s) of the
then current Interest Period(s) for the outstanding LIBOR Rate Loans, either
prepay such LIBOR Rate Loans or convert such LIBOR Rate Loans into Prime Rate
Loans in accordance with the terms of this Agreement.

         4.3 Illegality. Notwithstanding any other provision of this Agreement,
in the event that it becomes unlawful for any Lender (or its Applicable Lending
Office) to make, maintain, or




                                       34


fund LIBOR Rate Loans hereunder, then such Lender shall promptly notify the
Borrower and Administrative Agent thereof and such Lender's obligation to make
or continue LIBOR Rate Loans and to convert Prime Rate Loans into LIBOR Rate
Loans shall be suspended until such time as such Lender may again make,
maintain, and fund LIBOR Rate Loans (in which case the provisions of Section 4.5
shall be applicable).

         4.4 Requirements of Law. If, after the date hereof, the adoption of any
applicable law, rule, or regulation, or any change in any applicable law, rule,
or regulation, or any change in the interpretation or administration thereof by
any Governmental Authority, central bank, or comparable agency charged with the
interpretation or administration thereof, or compliance by any Lender (or its
Applicable Lending Office) with any request or directive (whether or not having
the force of law) of any such Governmental Authority, central bank, or
comparable agency:

                  (i) shall subject such Lender (or its Applicable Lending
         Office) to any Taxes (as defined in Section 4.6(a)) with respect to any
         LIBOR Rate Loans, its Notes, any Letter of Credit or any Lender's
         participation therein, any LOC Documents, or its obligation to make
         LIBOR Rate Loans, or change the basis of taxation of any amounts
         payable to such Lender (or its Applicable Lending Office) under this
         Agreement or its Notes in respect of any LIBOR Rate Loans (other than a
         change in the rate of tax);

                  (ii) shall impose, modify, or deem applicable any reserve,
         special deposit, assessment, or similar requirement (other than the
         Eurodollar Reserve Requirement utilized in the determination of the
         Adjusted LIBOR Rate) relating to any extensions of credit or other
         assets of, or any deposits with or other liabilities or commitments of,
         such Lender (or its Applicable Lending Office), including the
         Commitment of such Lender hereunder; or

                  (iii) shall impose on such Lender (or its Applicable Lending
         Office) or the London interbank market any other condition affecting
         this Agreement or its Notes or any of such extensions of credit or
         liabilities or commitments (including any Letter of Credit or any
         Lender's participation therein or any LOC Documents);

and the result of any of the foregoing is to increase the cost to such Lender
(or its Applicable Lending Office) of making, converting into, continuing, or
maintaining any LIBOR Rate Loans or any Letter of Credit or any Lender's
participation therein or any LOC Documents or to reduce any sum received or
receivable by such Lender (or its Applicable Lending Office) under this
Agreement or its Notes with respect to any LIBOR Rate Loans or any Letter of
Credit or LOC Document, then the Borrower shall pay to such Lender on demand
such amount or amounts as will compensate such Lender for such increased cost or
reduction. If any Lender requests compensation by the Borrower under this
Section 4.4, the Borrower may, by notice to such Lender (with a copy to the
Administrative Agent), suspend the obligation of such Lender to make or continue
LIBOR Rate Loans, or to convert Prime Rate Loans into LIBOR Rate Loans, until
the event or condition giving rise to such request ceases to be in effect (in
which case the provisions of Section 4.5 shall be applicable); provided that
such suspension shall not affect the




                                       35


right of such Lender to receive the compensation so requested. Each Lender shall
promptly notify the Borrower and the Administrative Agent of any event of which
it has knowledge, occurring after the date hereof, which will entitle such
Lender to compensation pursuant to this Section 4.4 and will designate a
different Applicable Lending Office if such designation will avoid the need for,
or reduce the amount of, such compensation and will not, in the sole judgment of
such Lender, be otherwise disadvantageous to it; provided, that in determining
whether designating a different Applicable Lending Office would be
disadvantageous to such Lender, such Lender shall disregard any economic
disadvantage that the Borrower agrees in form and substance satisfactory to such
Lender to indemnify and hold such Lender harmless therefrom. Any Lender claiming
compensation under this Section 4.4 shall furnish to the Borrower and the
Administrative Agent a statement setting forth the additional amount or amounts
to be paid to it hereunder which shall be conclusive in the absence of manifest
error. In determining such amount, such Lender may use any reasonable averaging
and attribution methods.

         4.5 Treatment of Affected Loans. If the obligation of any Lender to
make any LIBOR Rate Loan or to continue, or to convert Prime Rate Loans into,
LIBOR Rate Loans shall be suspended pursuant to Section 4.3 or 4.4, such
Lender's LIBOR Rate Loans shall be automatically converted into Prime Rate Loans
on the last day(s) of the then current Interest Period(s) for such LIBOR Rate
Loans (or, in the case of a conversion required by Section 4.4, on such earlier
date as such Lender may specify to the Borrower with a copy to the
Administrative Agent) and, unless and until such Lender gives notice as provided
below that the circumstances specified in Section 4.3 or 4.4 that gave rise to
such conversion no longer exist:

                  (i) to the extent that such Lender's LIBOR Rate Loans have
         been so converted, all payments and prepayments of principal that would
         otherwise be applied to such Lender's LIBOR Rate Loans shall be applied
         instead to its Prime Rate Loans; and

                  (ii) all Loans that would otherwise be made or continued by
         such Lender as LIBOR Rate Loans shall be made or continued instead as
         Prime Rate Loans, and all Prime Rate Loans of such Lender that would
         otherwise be converted into LIBOR Rate Loans shall remain as Prime Rate
         Loans.

If such Lender gives notice to the Borrower (with a copy to the Administrative
Agent) that the circumstances specified in Section 4.3 or 4.4 that gave rise to
the conversion of such Lender's LIBOR Rate Loans pursuant to this Section 4.5 no
longer exist (which such Lender agrees to do promptly upon such circumstances
ceasing to exist) at a time when LIBOR Rate Loans made by other Lenders are
outstanding, such Lender's Prime Rate Loans shall be automatically converted, on
the first day(s) of the next succeeding Interest Period(s) for such outstanding
LIBOR Rate Loans, to the extent necessary so that, after giving effect thereto,
all Loans held by the Lenders holding LIBOR Rate Loans and by such Lender are
held pro rata (as to principal amounts, interest rate basis, and Interest
Periods) in accordance with their respective Commitments.

         4.6 Taxes.



                                       36


                  (a) No Deductions. Any and all payments by the Borrower to or
         for the account of any Lender or the Administrative Agent hereunder or
         under any other Credit Document shall be made free and clear of and
         without deduction for any and all present or future taxes, duties,
         levies, imposts, deductions, charges or withholdings, and all
         liabilities with respect thereto, excluding, in the case of each Lender
         and the Administrative Agent, taxes imposed on its net income, and
         franchise taxes imposed in lieu of a tax on net income, by the
         jurisdiction under the laws of which such Lender (or its Applicable
         Lending Office) or the Administrative Agent (as the case may be) is
         organized or maintained or any political subdivision thereof (all such
         non-excluded taxes, duties, levies, imposts, deductions, charges,
         withholdings, and liabilities being hereinafter referred to as
         "Taxes"). If the Borrower shall be required by law to deduct or
         withhold any Taxes from or in respect of any sum payable under this
         Agreement or any other Credit Document to any Lender or the
         Administrative Agent, (i) except as provided in Section 4.6(e), the sum
         payable shall be increased as necessary so that after making all
         required deductions or withholdings for or on account of Taxes
         (including deductions or withholdings for or on account of Taxes
         applicable to additional sums payable under this Section 4.6) such
         Lender or the Administrative Agent receives an amount equal to the sum
         it would have received had no such deductions been made, (ii) the
         Borrower shall make such deductions or withholdings, (iii) the Borrower
         shall pay the full amount deducted or withheld to the relevant taxation
         authority or other Governmental Authority in accordance with applicable
         law, and (iv) within thirty (30) days after the date of any payment of
         Taxes, the Borrower shall furnish to the Administrative Agent, at its
         address referred to in Section 12.1, the original or a certified copy
         of a receipt evidencing payment thereof.

                  (b) Other Taxes. In addition, the Borrower agrees to pay any
         and all present or future stamp or documentary taxes and any other
         excise or property taxes or charges or similar levies which arise from
         any payment made under this Agreement or any other Credit Document or
         from the execution or delivery of, or otherwise with respect to, this
         Agreement or any other Credit Document (hereinafter referred to as
         "Other Taxes").

                  (c) Indemnity. Except as provided in Section 4.6(e), the
         Borrower agrees to indemnify each Lender and the Administrative Agent
         for the full amount of Taxes and Other Taxes (including any Taxes or
         Other Taxes imposed or asserted by any jurisdiction on amounts payable
         under this Section 4.6 for or on account of Taxes or Other Taxes) paid
         by such Lender or the Administrative Agent (as the case may be) and any
         liability (including penalties, interest, and expenses) arising
         therefrom or with respect thereto.

                  (d) Exemption from Backup Withholding. If requested in writing
         by the Borrower or the Administrative Agent, each Lender shall provide
         the Borrower and the Administrative Agent with accurate and complete
         original signed copies of Internal Revenue Service Form W-9 or any
         successor form prescribed by the Internal Revenue Service certifying
         that such Lender is entitled to a complete exemption from United States
         withholding tax on payments pursuant to this Agreement or any of the
         other Credit Documents.



                                       37


                  (e) Non-U.S. Lenders. Each Lender that is not a United States
         person under Section 7701(a)(30) of the IRC for U.S. federal income tax
         purposes, on or prior to the date on which it becomes a Lender under
         this Agreement pursuant to Section 4.8 or 12.3), and from time to time
         thereafter if (x) a lapse in time or change in circumstances renders
         the previous certification obsolete or inaccurate in any material
         respect or (y) requested in writing by the Borrower or the
         Administrative Agent (but only so long as such Lender remains lawfully
         able to do so), shall provide the Borrower and the Administrative Agent
         with (i) two accurate and complete original signed copies of Internal
         Revenue Service Form W-8BEN or W-8ECI, as appropriate, or any successor
         form prescribed by the Internal Revenue Service, certifying that such
         Lender is entitled to benefits under an income tax treaty to which the
         United States is a party which completely eliminates United States
         withholding tax on all payments hereunder or under any other Credit
         Documents or certifying that all such payments are effectively
         connected with the conduct of a trade or business in the United States,
         or (ii) if such Lender is not a "bank" within the meaning of Section
         881(c)(3)(A) of the IRC and cannot deliver either Internal Revenue
         Service Form W-8BEN (with respect to a complete exemption under an
         income tax treaty) or Form W-8ECI pursuant to clause (i), (A) a
         certificate, in form satisfactory to the Borrower and the
         Administrative Agent, and (B) two accurate and complete original signed
         copies of Form W-8BEN or any successor form prescribed by the Internal
         Revenue Service, certifying that such Lender is entitled to a complete
         exemption from United States withholding tax on payments of interest
         pursuant to this Agreement or any of the other Credit Documents. For
         any period with respect to which a Lender has failed to provide the
         Borrower and the Administrative Agent with the appropriate form
         pursuant to this Section 4.6(e) (unless such failure is due to a change
         in treaty, law, or regulation (or in the official interpretation
         thereof) enacted or promulgated subsequent to the date on which a form
         with respect to such Lender originally was required to be provided),
         such Lender shall not be entitled to indemnification under Section
         4.6(a) or 4.6(c) with respect to Taxes imposed by the United States;
         provided, however, that should a Lender, which is otherwise exempt from
         United States withholding tax, become subject to Taxes because of its
         failure to deliver a form required hereunder, the Borrower shall take
         such steps as such Lender shall reasonably request to assist such
         Lender, at such Lender's expense, to recover such Taxes. In addition,
         for any period with respect to which a Lender has provided the Borrower
         and the Administrative Agent with the Internal Revenue Service forms
         specified in clause (ii) of the first sentence of this Section 4.6(e),
         such Lender shall not be entitled to indemnification under Section
         4.6(a) or 4.6(c) with respect to Taxes imposed by the United States
         other than Taxes imposed on interest.

                  (f) Lending Offices. If the Borrower is required to pay
         additional amounts to or for the account of any Lender pursuant to this
         Section 4.6, then such Lender will agree to use reasonable efforts to
         change the jurisdiction of its Applicable Lending Office so as to
         eliminate or reduce any such additional payment which may thereafter
         accrue if such change, in the sole judgment of such Lender, is not
         otherwise materially disadvantageous to such Lender; provided, that in
         determining whether changing the jurisdiction of an Applicable Lending
         Office would be disadvantageous to such Lender, such Lender shall


                                       38


         disregard any economic disadvantage that the Borrower agrees in form
         and substance satisfactory to such Lender to indemnify and hold such
         Lender harmless from.

                  (g) Refund to Borrower. If any Lender determines that it has
         actually received or realized any refund of tax, any reduction of, or
         credit against, its tax liabilities or otherwise recovered any amount
         in connection with any deduction or withholding, or payment of any
         additional amount, by the Borrower pursuant to Section 4.4 or 4.6, such
         Lender shall reimburse the Borrower an amount that the Lender shall, in
         its sole discretion, determine is equal to the net benefit, after tax,
         which was actually obtained by the Lender as a consequence of such
         refund, reduction, credit or recovery; provided, that nothing in this
         subsection (f) shall require any Lender to make available its tax
         returns (or any other information relating to its taxes which it deems
         to be confidential).

                  (h) Survival. Without prejudice to the survival of any other
         agreement of the Borrower hereunder, the agreements and obligations of
         the Borrower contained in this Section 4.6 shall survive the repayment
         of the Loans, the LOC Obligations and other obligations under the
         Credit Documents and the termination of the Commitments hereunder.

         4.7 Compensation. Upon the request of any Lender, the Borrower shall
pay to such Lender such amount or amounts as shall be sufficient (in the
reasonable opinion of such Lender) to compensate it for any loss, cost, or
expense (excluding loss of anticipated profits) incurred by it as a result of:
(i) any payment, prepayment, or conversion of a LIBOR Rate Loan for any reason
(including the acceleration of the Loans pursuant to Section 9.2) on a date
other than the last day of the Interest Period for such Loan; or (ii) any
failure by the Borrower for any reason (including the failure of any condition
precedent specified in Article V to be satisfied) to borrow, convert, continue,
or prepay a LIBOR Rate Loan on the date for such borrowing, conversion,
continuation, or prepayment specified in the relevant Notice of Borrowing,
prepayment, continuation, or conversion under this Agreement. With respect to
LIBOR Rate Loans, such indemnification may include an amount equal to the
excess, if any, of (i) the amount of interest which would have accrued on the
amount so prepaid, or not so borrowed, converted or continued, for the period
from the date of such prepayment or of such failure to borrow, convert or
continue to the last day of the applicable Interest Period (or, in the case of a
failure to borrow, convert or continue, the Interest Period that would have
commenced on the date of such failure) in each case at the applicable rate of
interest for such LIBOR Rate Loans provided for herein (excluding, however, the
Applicable Margin included therein, if any) over (ii) the amount of interest (as
reasonably determined by such Lender) which would have accrued to such Lender on
such amount by placing such amount on deposit for a comparable period with
leading banks in the interbank Eurodollar market. Without prejudice to the
survival of any other agreement of the Borrower hereunder, the covenants of the
Borrower set forth in this Section 4.7 shall survive the repayment of the Loans,
LOC Obligations and other obligations under the Credit Documents and the
termination of the Commitments hereunder.

         4.8 Replacement of Lenders. The Borrower shall have the right, if no
Default then exists, to replace any Lender (a "Replaced Lender") with one or
more other Eligible Assignees




                                       39


reasonably acceptable to the Administrative Agent (collectively, the
"Replacement Lender") if such Lender is charging the Borrower increased costs
pursuant to Section 4.4 or 4.6 in excess of those being charged generally by the
other Lenders or such Lender becomes incapable of making LIBOR Rate Loans as
provided in Section 4.3 when other Lenders are generally able to do so;
provided, however, that (i) at the time of any replacement pursuant to this
Section 4.8, the Replacement Lender shall enter into one or more assignment
agreements in accordance with Section 12.3(b) (and with all fees payable
pursuant to Section 12.3(b) to be paid by the Replacement Lender) pursuant to
which the Replacement Lender shall acquire all of the Commitments and
outstanding Revolving Obligations of the Replaced Lender and, in connection
therewith, shall pay to (x) the Replaced Lender, an amount equal to the sum of
(A) the principal of, and all accrued interest on, all outstanding Loans of the
Replaced Lender, (B) all other Obligations owing to such Replaced Lender,
together with all then unpaid interest with respect thereto at such time, and
(C) all accrued, but theretofore unpaid, fees owing to the Replaced Lender
pursuant to Section 3.2, and (y) the Issuing Lender, an amount equal to such
Replaced Lender's Revolving Commitment Percentage of a participation in any LOC
Obligations (which at such time remains a LOC Obligation) to the extent such
amount was not theretofore purchased by such Replaced Lender pursuant to Section
2.6(b), and (ii) all obligations of the Borrower owing to the Replaced Lender
(other than those specifically described in clause (i) above in respect of which
the assignment purchase price has been, or is concurrently being, paid, but
including any amounts which would be paid to a Lender pursuant to Section 4.7 if
the Borrower were prepaying a LIBOR Rate Loan) shall be paid in full to such
Replaced Lender concurrently with such replacement. Upon the execution of the
respective assignment agreement, the payment of amounts referred to in clauses
(i) and (ii) above and, if so requested by the Replacement Lender, delivery to
the Replacement Lender of a Note executed by the Borrower, the Replacement
Lender shall become a Lender hereunder and the Replaced Lender shall cease to
constitute a Lender hereunder and be released of all its obligations as a
Lender, except with respect to indemnification provisions applicable to the
Replaced Lender under this Agreement, which shall survive as to such Replaced
Lender.

                                    ARTICLE V
                          CLOSING; CONDITIONS PRECEDENT

         5.1 Closing Date. The closing of the transactions contemplated by this
Agreement will take place, and the initial Extensions of Credit will be made, on
July 16, 2002, or at such other date (not later than July 31, 2002) as the
parties shall mutually agree (the "Closing Date"), provided that all conditions
to the closing set forth in Section 5.2 have been satisfied.

         5.2 Closing Conditions. The obligation of the Lenders to enter into
this Agreement and to make the initial Extensions of Credit hereunder is subject
to satisfaction of the following conditions precedent at or as of the Closing
Date (in each case in form and substance acceptable to the Lenders, unless
otherwise specified):

                  (a) Executed Credit Documents. Receipt by the Administrative
         Agent of multiple counterparts of the Credit Documents, including this
         Agreement, the Notes




                                       40


         (provided that there shall only be one original of each Note) and the
         Subsidiary Guaranty, each duly executed by an appropriate officer of
         each of the parties thereto.

                  (b) Financial Information. Receipt by the Administrative Agent
         of such financial information regarding the Borrower and the
         Consolidated Group as may be requested by, and in each case in form and
         substance satisfactory to, the Administrative Agent and the Lenders,
         including, to the extent available, any of the information otherwise
         required to be delivered pursuant to Section 7.1.

                  (c) Corporate Documents. Receipt by the Administrative Agent
         of the following:

                           (i) Charter Documents. Copies of the Articles or
                  Certificate of Incorporation, Articles of Organization or
                  other similar publicly-filed organizational documents of each
                  of the Credit Parties, each certified to be true and complete
                  as of a recent date by the appropriate Governmental Authority
                  of the state or other jurisdiction of its incorporation or, if
                  certification by the appropriate Governmental Authority is not
                  available, certified by its secretary or assistant secretary
                  to be true and correct as of the Closing Date.

                           (ii) Bylaws. A copy of the bylaws, operating
                  agreement or other internal governance documents of each of
                  the Credit Parties, each certified by its secretary or
                  assistant secretary to be true and correct as of the Closing
                  Date.

                           (iii) Resolutions. Copies of resolutions of the Board
                  of Directors of each of the Credit Parties approving and
                  adopting the Credit Documents to which it is a party, the
                  transactions contemplated therein and authorizing execution
                  and delivery thereof, certified by its secretary or assistant
                  secretary to be true and correct and in force and effect as of
                  the Closing Date.

                           (iv) Good Standing. Copies of certificates of good
                  standing, existence or its equivalent with respect to each of
                  the Credit Parties certified as of a recent date by the
                  appropriate Governmental Authorities of the state or other
                  jurisdiction of incorporation and each other jurisdiction in
                  which the failure to so qualify and be in good standing could
                  reasonably be expected to have a Material Adverse Effect.

                           (v) Incumbency Certificate. An incumbency certificate
                  with respect to each of the Credit Parties, certified by its
                  secretary or assistant secretary to be true and correct as of
                  the Closing Date.

                  (d) Opinion of Counsel. Receipt by the Administrative Agent of
         opinions of McAfee & Taft A Professional Corporation, counsel to the
         Parent and the Borrower, and Steven R. Mackey, Vice President and
         General Counsel of the Parent, as to the matter set forth on Exhibit
         "F" and such other matters as the Administrative Agent or its counsel



                                       41


         may reasonably request at least three Business Days prior to the
         Closing Date (such opinions may be based upon such customary
         assumptions and may contains such customary qualifications and
         exceptions as may be approved by the Administrative Agent and its
         counsel).

                  (e) Certificate of Chief Financial Officer. A certificate,
         signed by the chief financial officer of the Parent, stating that, as
         of the Closing Date and to the best of such officer's knowledge, (i) no
         Default or Event of Default has occurred and is continuing, (ii) the
         representations and warranties made by the Borrower and the Parent
         herein or by the Credit Parties in any other Credit Documents are true
         and correct, and (iii) except as set forth on Schedule 6.5 and except
         as contemplated by Section 12.17, since September 30, 2001, there has
         been no circumstance, development or event which has had or could
         reasonably be expected to have a Material Adverse Effect. Such
         certificate shall also set forth calculations demonstrating the
         Borrower's compliance with Sections 7.11(c) and 7.12.

                  (f) Fees and Expenses. Payment by the Credit Parties of all
         fees and expenses owed by them to the Lenders and the Administrative
         Agent, including the reasonable fees and expenses of counsel to the
         Administrative Agent.

                  (g) Other. Receipt by the Lenders of such other documents,
         instruments, agreements or information as reasonably requested by any
         Lender.

                  (h) Bank One Agreement. Receipt by the Administrative Agent
         and the Lenders of satisfactory evidence that (i) any existing defaults
         or events of default under the Bank One Agreement have been cured or
         permanently waived, and (ii) the Bank One Agreement has been modified
         such that the affirmative and negative covenants contained therein and
         the events of default specified therein are no more restrictive than
         the covenants contained herein and the Events of Defaults specified
         herein.

In addition, there shall not have occurred or become known any material adverse
change or any condition or event that could reasonably be expected to result in
a material adverse change in the business, operations, financial condition,
liabilities (contingent or otherwise) or prospects of the Consolidated Group
taken as a whole since the dates of the latest financial information furnished
to the Administrative Agent and the Lenders.

         5.3 Conditions to All Extensions of Credit. The obligation of each
Lender to make any Extension of Credit hereunder (including the initial
Extension of Credit to be made hereunder) is subject to the satisfaction of the
following additional conditions precedent on the date of making such Extension
of Credit (in addition to the conditions set forth in Article II):

                  (a) Representations and Warranties. The representations and
         warranties made by the Borrower and the Parent herein or by the Credit
         Parties in any other Credit Documents or which are contained in any
         certificate furnished at any time under or in connection herewith shall
         be true and correct in all material respects on and as of the date




                                       42


         of such Extension of Credit as if made on and as of the date of such
         extension or such request, as applicable (except for those which
         expressly relate to an earlier specified date).

                  (b) No Default or Event of Default. No Default or Event of
         Default shall have occurred and be continuing on such date or after
         giving effect to the Extension of Credit to be made on such date and
         the application of the proceeds thereof unless such Default or Event of
         Default shall have been waived in accordance with this Agreement.

                  (c) Bankruptcy or Insolvency. No Bankruptcy Event shall have
         occurred by or with respect to the Borrower, the Parent or any of the
         Parent's Subsidiaries.

                  (d) No Material Adverse Effect. No circumstance, event or
         condition shall have occurred or be existing which could reasonably be
         expected to have a Material Adverse Effect.

Each request for an Extension of Credit (including extensions and conversions)
and each acceptance by the Borrower of an Extension of Credit (including
extensions and conversions) shall be deemed to constitute a representation and
warranty by the Borrower as of the date of such Extension of Credit that the
applicable conditions in subsections (a), (b), (c) and (d) of this Section 5.3
have been satisfied.

                                   ARTICLE VI
                         REPRESENTATIONS AND WARRANTIES

         To induce the Lenders to make the Extensions of Credit hereunder to the
Borrower, the Borrower and the Parent hereby jointly and severally represent and
warrant to the Administrative Agent and to each Lender that:

         6.1 Organization; Existence; Compliance with Law. Each of the members
of the Consolidated Group (i) is duly organized, validly existing in good
standing under the laws of the jurisdiction of its incorporation or
organization, (ii) has the corporate or other necessary organizational power and
authority, and the legal right to own and operate its Properties, to lease the
Properties it operates as lessee and to conduct the business in which it is
currently engaged, (iii) is duly qualified as a foreign entity and in good
standing under the laws of each jurisdiction where its ownership, lease or
operation of Property or the conduct of its business requires such
qualification, other than in such jurisdictions where the failure to be so
qualified and in good standing has not had and could not have a Material Adverse
Effect, and (iv) is in compliance with all Requirements of Law, except to the
extent that the failure to comply therewith has not had and could not be
reasonably expected to have a Material Adverse Effect.

         6.2 Existence and Authorization. Each of the Credit Parties has the
corporate or other necessary organizational power and authority, and the legal
right, to make, deliver and perform the Credit Documents to which it is a party
and has taken all necessary corporate or other action to authorize the
execution, delivery and performance by it of the Credit Documents to which it is



                                       43


a party. No consent or authorization of, filing with, notice to or other act by
or in respect of, any Governmental Authority or any other Person is required in
connection with acceptance of Extensions of Credit or the making of the
guaranties hereunder or with the execution, delivery or performance of any
Credit Documents by the Credit Parties (other than those which have been
obtained, such filings as are required by the SEC and to fulfill other reporting
requirements with Governmental Authorities) or with the validity or
enforceability of any Credit Document against the Credit Parties.

         6.3 Enforceability. Each Credit Document to which it is a party
constitutes a legal, valid and binding obligation of such Credit Party
enforceable against such Credit Party in accordance with its terms, except as
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium or similar laws affecting the enforcement of
creditors' rights generally and by general equitable principles (whether
enforcement is sought by proceedings in equity or at law).

         6.4 No Legal Bar. The execution, delivery and performance of the Credit
Documents, the borrowings hereunder and the use of the Extensions of Credit will
not violate any Requirement of Law or any Contractual Obligation of any member
of the Consolidated Group (except those as to which waivers or consents have
been obtained and those which could not reasonably be expected to have a
Material Adverse Effect), and will not result in, or require, the creation or
imposition of any Lien on any of its respective properties or revenues pursuant
to any Requirement of Law or Contractual Obligation. No member of the
Consolidated Group is in default under or with respect to any of its Contractual
Obligations in any respect which has had or could reasonably be expected to have
a Material Adverse Effect.

         6.5 Financial Condition. The audited consolidated balance sheets of the
Parent and its consolidated Subsidiaries dated as of September 30, 1999,
September 30, 2000, and September 30, 2001, respectively, together, in each
case, with the related audited statements of income and cash flows, and the
unaudited company-prepared consolidated balance sheet for the Parent and its
consolidated Subsidiaries, dated as of March 31, 2002, together with related
consolidated statements of income and cash flows, copies of which have
previously been provided to the Administrative Agent for distribution to the
Lenders, were prepared in accordance with GAAP consistently applied throughout
the periods covered thereby, are complete and correct in all material respects
and present fairly the financial condition (including disclosure of all material
liabilities, contingent or otherwise) and results of operations of the Persons
and for the periods specified, subject in the case of interim company-prepared
statements to normal year-end adjustments and the absence of footnotes. Except
as set forth on Schedule 6.5, since September 30, 2001, and except as
contemplated by Section 12.17, there has been no circumstance, development or
event which has had or could reasonably be expected to have a Material Adverse
Effect.

         6.6 No Material Litigation and Disputes. No unsealed litigation or, to
the best knowledge of the Credit Parties, claims, investigation, sealed
litigation or proceeding of or before any arbitrator or Governmental Authority
is pending or, to the best knowledge of the Credit Parties, threatened by or
against, any members of the Consolidated Group or against any of their


                                       44


respective properties or revenues which (a) relate to the Credit Documents or
any of the transactions contemplated hereby or thereby or (b) if adversely
determined, could, after giving effect to any applicable insurance, reasonably
be expected to have a Material Adverse Effect.

         6.7 No Defaults. No Default or Event of Default has occurred and is
continuing. No default exists, nor, to the best knowledge of the Credit Parties,
is any such default asserted under any Contractual Obligations to which any
member of the Consolidated Group is a party which individually or in the
aggregate has had or could reasonably be expected to have a Material Adverse
Effect.

         6.8 Ownership and Operation of Property. Each of the members of the
Consolidated Group has good title to, or a valid leasehold interest in, all of
its material real property, and good title to, or a valid leasehold interest in,
all of its other material Property, and none of such Properties is subject to
any Lien, except for Permitted Liens.

         6.9 Licenses. Each of the members of the Consolidated Group has
obtained all material Licenses, governmental or private, necessary to the
ownership of its Properties and to the conduct of its business, which are
material to the Consolidated Group taken as a whole.

         6.10 No Burdensome Restrictions. None of the members of the
Consolidated Group is subject to any Requirement of Law or any Contractual
Obligation which has had or could be reasonably expected to have a Material
Adverse Effect.

         6.11 Taxes. Each of the members of the Consolidated Group has filed or
caused to be filed all income tax returns (federal, state, local and foreign)
and all other material tax returns which are required to be filed and has paid
(i) all amounts shown therein to be due (including interest and penalties) and
(ii) all other taxes, fees, assessments and other governmental charges
(including mortgage recording taxes, documentary stamp taxes and intangibles
taxes) owing, except for such taxes which are not yet delinquent or as are being
contested in good faith by proper proceedings and against which adequate
reserves are being maintained in accordance with GAAP. No tax claim or
assessment has been asserted in writing against members of the Consolidated
Group which has had or, if adversely determined, could reasonably be expected to
have a Material Adverse Effect.

         6.12 ERISA Matters.

                  (i) During the five-year period prior to the date on which
         this representation is made or deemed made: (A) no ERISA Event has
         occurred, and, to the best knowledge of the Credit Parties, no event or
         condition has occurred or exists as a result of which any ERISA Event
         could reasonably be expected to occur, with respect to any Plan; (B) no
         "accumulated funding deficiency," as such term is defined in Section
         302 of ERISA and Section 412 of the IRC, whether or not waived, has
         occurred with respect to any Plan; (C) each Plan has been maintained,
         operated, and funded in compliance with its own terms and in material
         compliance with the provisions of ERISA, the IRC, and any other
         applicable federal or state laws, except to the extent any
         noncompliance could not




                                       45


         reasonably be expected to have a Material Adverse Effect; and (D) no
         Lien in favor of the PBGC or a Plan has arisen or is reasonably likely
         to arise on account of any Plan.

                  (ii) The actuarial present value of all "benefit liabilities"
         (as defined in Section 4001(a)(16) of ERISA), whether or not vested,
         under each Single Employer Plan, as of the last annual valuation date
         prior to the date on which this representation is made or deemed made
         (determined, in each case, in accordance with Financial Accounting
         Standards Board Statement 87, utilizing the actuarial assumptions used
         in such Plan's most recent actuarial valuation report), did not exceed
         as of such valuation date the fair market value of the assets of such
         Plan.

                  (iii) No member of the Consolidated Group nor any ERISA
         Affiliate has incurred, or, to the best knowledge of the Credit
         Parties, could be reasonably expected to incur, any withdrawal
         liability under ERISA to any Multiemployer Plan or Multiple Employer
         Plan, except to the except to the extent any such withdrawal liability
         could not reasonably be expected to have a Material Adverse Effect. No
         member of the Consolidated Group nor any ERISA Affiliate would become
         subject to any withdrawal liability under ERISA if any member of the
         Consolidated Group or any ERISA Affiliate were to withdraw completely
         from all Multiemployer Plans and Multiple Employer Plans as of the
         valuation date most closely preceding the date on which this
         representation is made or deemed made. No member of the Consolidated
         Group nor any ERISA Affiliate has received any notification that any
         Multiemployer Plan is in reorganization (within the meaning of Section
         4241 of ERISA), is insolvent (within the meaning of Section 4245 of
         ERISA), or has been terminated (within the meaning of Title IV of
         ERISA), and no Multiemployer Plan is, to the best knowledge of the
         Credit Parties, reasonably expected to be in reorganization, insolvent,
         or terminated.

                  (iv) To the best knowledge of the Credit Parties, no
         prohibited transaction (within the meaning of Section 406 of ERISA or
         Section 4975 of the IRC) or breach of fiduciary responsibility has
         occurred with respect to a Plan which has subjected or may subject any
         member of the Consolidated Group or any ERISA Affiliate to any
         liability under Sections 406, 409, 502(i), or 502(l) of ERISA or
         Section 4975 of the IRC, or under any agreement or other instrument
         pursuant to which any member of the Consolidated Group or any ERISA
         Affiliate has agreed or is required to indemnify any person against any
         such liability.

                  (v) No member of the Consolidated Group nor any ERISA
         Affiliates has any liability with respect to "expected post-retirement
         benefit obligations" within the meaning of the Financial Accounting
         Standards Board Statement 106. Each Plan which is a welfare plan (as
         defined in Section 3(1) of ERISA) to which Sections 601-609 of ERISA
         and Section 4980B of the IRC apply has been administered in compliance
         in all material respects of such sections, except to the extent any
         noncompliance could not reasonably be expected to have a Material
         Adverse Effect.

         6.13 Governmental Regulations.



                                       46


                  (a) Margin Stock. No part of the proceeds of the Extensions of
         Credit hereunder will be used, directly or indirectly, for the purpose
         of purchasing or carrying any "margin stock" within the meaning of
         Regulation U, or for the purpose of purchasing or carrying or trading
         in any other securities. If requested by any Lender or the
         Administrative Agent, the Borrower will furnish to the Administrative
         Agent and each Lender a statement to the foregoing effect in conformity
         with the requirements of FR Form U-1 referred to in said Regulation U.
         No indebtedness being reduced or retired out of the proceeds of the
         Extensions of Credit hereunder was or will be incurred for the purpose
         of purchasing or carrying any margin stock within the meaning of
         Regulation U or any " margin security" within the meaning of Regulation
         T. "Margin stock" within the meanings of Regulation U does not
         constitute more than 25% of the value of the consolidated assets of the
         Borrower and its Subsidiaries.

                  (b) Securities Laws. None of the transactions contemplated by
         this Agreement (including the direct or indirect use of the proceeds of
         the Loans) will violate or result in a violation of the Securities Act
         of 1933, as amended, or the Securities Exchange Act, or regulations
         issued pursuant thereto, or Regulation T, U or X.

                  (c) Investment Company Act; Public Utility Holding Company
         Act. None of the members of the Consolidated Group is subject to
         regulation under the Public Utility Holding Company Act of 1935, the
         Federal Power Act or the Investment Company Act of 1940, each as
         amended. In addition, none of the members of the Consolidated Group is
         (i) an "investment company" registered or required to be registered
         under the Investment Company Act of 1940, as amended, and is not
         controlled by such a company, or (ii) a "holding company," or a
         "subsidiary company" of a "holding company," or an "affiliate" of a
         "holding company" or of a "subsidiary" of a "holding company," within
         the meaning of the Public Utility Holding Company Act of 1935, as
         amended.

                  (d) Regulation O. No director, executive officer or principal
         shareholder of any member of the Consolidated Group is a director,
         executive officer or principal shareholder of any Lender. For the
         purposes hereof the terms "director," "executive officer" and
         "principal shareholder"(when used with reference to any Lender) have
         the respective meanings assigned thereto in Regulation O.

         6.14 Subsidiaries. Set forth on Schedule 6.14 are all the Subsidiaries
of the Parent, including the jurisdiction of organization, classes of Capital
Stock or other equity interests (including options, warrants, rights of
subscription, conversion and exchangeability and other similar rights) and
ownership and ownership percentages thereof. The outstanding shares of Capital
Stock shown have been validly issued, fully paid and are non-assessable and
owned free of Liens other than Permitted Liens.

         6.15 Purpose of Extensions of Credit. The proceeds of the Revolving
Loans will be used solely for the purposes stated in Section 2.2(c).



                                       47


         6.16     Environmental Matters.

                  (i) All of the facilities and Properties owned, leased or
         operated by each member of the Consolidated Group, and all of the
         Consolidated Group's respective operations at such facilities and
         Properties, are in compliance with all applicable Environmental Laws,
         and there is no violation of any Environmental Law with respect to such
         Properties or businesses, except to the extent any noncompliance or
         violation has not resulted and could not reasonably be expected to
         result in a Material Adverse Effect.

                  (ii) No Hazardous Materials are located or have been released
         on, under or about any of the facilities and Properties owned, leased
         or operated by any member of the Consolidated Group in amounts or
         concentrations that constitute a violation of, or could give rise to
         liability under, any Environmental Laws, and no Hazardous Materials
         have been generated, treated, stored, released from or disposed of at,
         on or under any of such facilities or Properties or any other location,
         or transported from such Properties to or disposed of at any other
         location by or on behalf of any members of the Consolidated Group in
         violation of any Environmental Law, except to the extent any such
         violation or liability has not resulted and could not reasonably be
         expected to result in a Material Adverse Effect.

                  (iii) No member of the Consolidated Group has (A) received any
         written notice of any judicial proceeding or administrative action that
         is pending or threatened under any Environmental Law with respect to
         any member of the Consolidated Group or its facilities, Properties or
         business, (B) entered into or been subject to any consent decree,
         consent order, administrative order or compliance order, or other
         administrative or judicial requirement that remains outstanding under
         any Environmental Law, or (C) been subject to any governmental
         enforcement action under any Environmental Laws with respect to any of
         its facilities or Properties or any off-site waste disposal site.

         6.17     Labor Matters. Except as set forth in Schedule 6.17:

                  (i) There are no strikes or lockouts against any members of
         the Consolidated Group pending or, to the best knowledge of the Credit
         Parties, threatened which could reasonably be expected to have a
         Material Adverse Effect.

                  (ii) The hours worked by and payments made to employees of the
         Consolidated Group have not been in violation of the Fair Labor
         Standards Act or any other applicable federal, state, local or foreign
         law dealing with such matters in any case where a Material Adverse
         Effect has occurred or could reasonably be expected to occur as a
         result of the violation thereof.

                  (iii) As of the date hereof, all payments due from members of
         the Consolidated Group, or for which any claim may be made against a
         member of the Consolidated Group, on account of wages and employee
         health and welfare insurance and other benefits, have been paid or
         accrued as a liability on the books of the respective members




                                       48


         of the Consolidated Group, except to the extent any failure to so pay
         or accrue could not reasonably be expected to have a Material Adverse
         Effect.

         6.18 No Material Misstatements. None of the information contained in
reports, financial statements, exhibits or schedules, taken as a whole,
furnished by or on behalf of any member of the Consolidated Group to the
Administrative Agent or any Lender in connection with the negotiation of the
Credit Documents or included therein or delivered pursuant thereto contained,
contains or will contain any material misstatement of fact or omitted, omits or
will omit to state any material fact necessary to make the statements therein,
in light of the circumstances under which they were, are or will be made, not
materially misleading.

                                   ARTICLE VII
                              AFFIRMATIVE COVENANTS

         The Borrower and the Parent hereby jointly and severally covenant and
agree that, so long as this Agreement is in effect or any amounts payable
hereunder or under any other Credit Document shall remain outstanding or any
Letter of Credit is outstanding, and until all of the Commitments hereunder
shall have terminated:

         7.1 Reporting Requirements. The members of the Consolidated Group will
furnish, or cause to be furnished, to the Administrative Agent (with sufficient
copies for each of the Lenders):

                  (a) Annual Financial Statements. As soon as available, and in
         any event within 95 days after the close of each fiscal year of the
         Consolidated Group, a consolidated balance sheet and income statement
         of the members of the Consolidated Group as of the end of such fiscal
         year, together with related consolidated statements of operations and
         retained earnings and of cash flows for such fiscal year, in each case
         setting forth in comparative form consolidated figures for the
         preceding fiscal year, all such financial information described above
         to be in reasonable form and detail and audited by independent
         certified public accountants of recognized national or regional
         standing reasonably acceptable to the Administrative Agent and whose
         opinion shall be to the effect that such financial statements have been
         prepared in accordance with GAAP (except for changes with which such
         accountants concur) and shall not be limited as to the scope of the
         audit or qualified as to the status of the members of the Consolidated
         Group as a going concern or any other material qualifications or
         exceptions. Such financial statements shall be accompanied by a
         certificate of the accountants conducting the annual audit stating that
         they have reviewed this Agreement and stating further whether, in the
         course of their audit, they have become aware of any Default or Event
         of Default and, if any such Default or Event of Default exists,
         specifying the nature and extent thereof.

                  (b) Quarterly Financial Statements. As soon as available, and
         in any event within 50 days after the close of each fiscal quarter of
         the Consolidated Group (excluding the fourth fiscal quarter) an
         internally-prepared consolidated balance sheet and income statement of
         the members of the Consolidated Group as of the end of such fiscal
         quarter,




                                       49


         together with related consolidated statements of operations and
         retained earnings and of cash flows for such fiscal quarter, in each
         case setting forth in comparative form consolidated figures for the
         corresponding period of the preceding fiscal year, all such financial
         information described above to be in reasonable form and detail and
         reasonably acceptable to the Administrative Agent, and accompanied by a
         certificate of the chief financial officer of the Parent to the effect
         that such quarterly financial statements fairly present in all material
         respects the financial condition of the members of the Consolidated
         Group and have been prepared in accordance with GAAP, subject to
         changes resulting from audit and normal year-end audit adjustments.

                  (c) Compliance Certificate. At the time of delivery of the
         financial statements provided for in Sections 7.1(a) and 7.1(b) above,
         a certificate of the chief financial officer or other Executive Officer
         of the Parent, in substantially the form of Exhibit "G," (i)
         demonstrating compliance with the financial covenants contained in
         Section 7.11 by calculation thereof as of the end of each such fiscal
         period, (ii) containing information regarding the amount of all Asset
         Dispositions during the prior fiscal year (annually only), and (iii)
         stating that no Default or Event of Default exists, or if any Default
         or Event of Default does exist, specifying the nature and extent
         thereof and what action the Credit Parties propose to take with respect
         thereto.

                  (d) Auditor's Reports. Promptly upon receipt thereof, a copy
         of any other report or " management letter" submitted by independent
         accountants to any member of the Consolidated Group in connection with
         any annual, interim or special audit of the books of such Person.

                  (e) Reports. Promptly upon transmission or receipt thereof,
         copies of any filings and registrations with, and reports to or from,
         the SEC, or any successor agency, and copies of all financial
         statements, proxy statements, notices and reports as the Parent shall
         send to its shareholders.

                  (f) Notice of Default. Promptly upon any Executive Officer of
         a Credit Party obtaining knowledge thereof, written notice of the
         occurrence of a Default or Event of Default, specifying the nature and
         existence thereof and what action the Credit Parties propose to take
         with respect thereto.

                  (g) Notice of Litigation and Potential Liabilities. Promptly
         upon any Executive Officer of a Credit Party obtaining knowledge
         thereof, written notice of: (i) the commencement of any litigation,
         arbitral or governmental proceeding against any Credit Party which, if
         adversely determined, would impose liability on one or more of the
         members of the Consolidated Group, after allowance for insurance
         coverage, of $10,000,000 or more in the aggregate or which would
         otherwise be likely to have a Material Adverse Effect; or (ii) the
         institution of any proceedings against such Person with respect to, or
         the receipt of notice by such Person of potential liability or
         responsibility for violation, or alleged violation of any Requirement
         of Law, including any Environmental Laws, the violation of which could
         have a Material Adverse Effect.



                                       50


                  (h) ERISA. Promptly upon any Executive Officer of a Credit
         Party obtaining knowledge thereof, written notice of: (i) any event or
         condition, including, but not limited to, any Reportable Event, that
         constitutes, or might reasonably lead to, an ERISA Event; (ii) with
         respect to any Multiemployer Plan, the receipt of notice as prescribed
         in ERISA or otherwise of any withdrawal liability assessed against the
         Credit Parties or any ERISA Affiliates, or of a determination that any
         Multiemployer Plan is in reorganization or insolvent (both within the
         meaning of Title IV of ERISA); (iii) the failure to make full payment
         on or before the due date (including extensions) thereof of all amounts
         which any member of the Consolidated Group or any ERISA Affiliate is
         required to contribute to each Plan pursuant to its terms and as
         required to meet the minimum funding standard set forth in ERISA and
         the IRC with respect thereto; or (iv) any change in the funding status
         of any Plan that could have a Material Adverse Effect, together with a
         description of any such event or condition or a copy of any such notice
         and a statement by an Executive Officer of the Parent briefly setting
         forth the details regarding such event, condition, or notice, and the
         action, if any, which has been or is being taken or is proposed to be
         taken by the Credit Parties with respect thereto. Promptly upon
         request, the Credit Parties shall furnish the Administrative Agent and
         the Lenders with such additional information concerning any Plan as may
         be reasonably requested, including, but not limited to, copies of each
         annual report/return (Form 5500 series), as well as all schedules and
         attachments thereto required to be filed with the Department of Labor
         and/or the Internal Revenue Service pursuant to ERISA and the IRC,
         respectively, for each "plan year" (within the meaning of Section 3(39)
         of ERISA).

                  (i) Lien Matters. Promptly upon any Executive Officer of a
         Credit Party obtaining knowledge thereof, written notice of the
         incurrence or existence of any Lien on or against the Properties of any
         member of the Consolidated Group, other than a Permitted Lien.

                  (j) Other Information. With reasonable promptness upon any
         such request, such other information regarding the business, properties
         or financial condition of any member of the Consolidated Group as the
         Administrative Agent (on behalf of any Lender) or the Required Lenders
         may reasonably request.

         7.2 Preservation of Existence and Franchises. Except as a result of or
in connection with a merger or consolidation of a Subsidiary permitted under
Section 8.3 or an Asset Disposition involving the Voting Stock of a Subsidiary
permitted under Section 8.5, each Credit Party will do all things necessary to
preserve and keep in full force and effect its existence, rights, franchises and
authority.

         7.3 Books and Records. Each member of the Consolidated Group will keep
complete and accurate books and records of its transactions in accordance with
good accounting practices on the basis of GAAP (including the establishment and
maintenance of appropriate reserves).



                                       51


         7.4 Compliance with Law. Each member of the Consolidated Group will
comply with all Requirements of Law applicable to it or its Properties, if
noncompliance with any such Requirement of Law could have a Material Adverse
Effect.

         7.5 Payment of Taxes and Other Indebtedness. Each member of the
Consolidated Group will pay and discharge (i) all taxes, assessments and
governmental charges or levies imposed upon it, or upon its income or profits,
or upon any of its Properties, before they shall become delinquent, (ii) all
lawful claims (including claims for labor, materials and supplies) which, if
unpaid, might give rise to a Lien upon any of its properties, and (iii) except
as prohibited hereunder, all of its other Indebtedness as it shall become due;
provided, however, that no member of the Consolidated Group shall be required to
pay any such tax, assessment, charge, levy, claim or Indebtedness (A) which is
being contested in good faith by appropriate proceedings and as to which
adequate reserves therefor have been established in accordance with GAAP or (B)
if the failure to make any such payment (x) would not give rise to an immediate
right to foreclose on a Lien securing such amounts and (y) could not have a
Material Adverse Effect.

         7.6 Insurance. Each member of the Consolidated Group will at all times
maintain in full force and effect insurance (including worker's compensation
insurance, liability insurance and casualty insurance) or appropriate risk
management programs in such amounts, covering such risks and liabilities and
with such deductibles or self-insurance retentions as are reasonable or
customary given the nature of its business, the circumstances and geographic
area in which such business is being conducted and the availability of insurance
coverage at commercially reasonable rates. The present insurance coverage and
risk management programs of the members of the Consolidated Group are outlined
as to carrier, policy number, expiration date, type and amount on Schedule 7.6.

         7.7 Maintenance of Property. Each member of the Consolidated Group will
maintain and preserve its Properties and equipment material to the conduct of
its business in good repair, working order and condition, normal wear and tear,
obsolescence and casualty and condemnation excepted, and will make, or cause to
be made, in such Properties and equipment from time to time all repairs,
renewals, replacements, extensions, additions, betterments and improvements
thereto as may be needed or proper, to the extent and in the manner customary
for companies in similar businesses.

         7.8 Performance of Obligations. Each member of the Consolidated Group
will perform all of its obligations under the terms of all material agreements,
indentures, mortgages, security agreements and other debt instruments to which
it is a party or by which it is bound, except where any failure to perform could
not reasonably be expected to have a Material Adverse Effect.

         7.9 Use of Proceeds. The Borrower will use the proceeds of Extensions
of Credit solely for the purposes set forth in Section 2.2(c).

         7.10 Audits/Inspections. Upon reasonable notice and during normal
business hours, each member of the Consolidated Group will permit
representatives appointed by the Administrative Agent, including independent
accountants, agents, attorneys, and appraisers, to visit and inspect its





                                       52


books and records, facilities and other business assets (other than privileged
information and sensitive proprietary information), and to make photocopies or
photographs thereof and to write down and record any information such
representative obtains and shall permit the Administrative Agent or its
representatives to investigate and verify the accuracy of information provided
to the Administrative Agent or the Lenders and to discuss all such matters with
the officers, employees and, subject to the right of the representatives of the
Consolidated Group to be present, representatives of such Person.

         7.11 Financial Covenants.

                  (a) Consolidated Debt to EBITDA Ratio. The Parent will
         maintain a Consolidated Debt to EBITDA Ratio, calculated as of the last
         day of each fiscal quarter beginning September 30, 2002, of not greater
         than 2.75 to one (2.75:1.00).

                  (b) Consolidated Debt to Capitalization Ratio. The Parent will
         maintain a Consolidated Debt to Capitalization Ratio, calculated as of
         the last day of each fiscal quarter beginning September 30, 2002, of
         not greater than 40%.

                  (c) Consolidated Tangible Net Worth. The Parent will maintain
         at all times Consolidated Tangible Net Worth of not less than
         $750,000,000.

         7.12 Liquidity Maintenance. The Credit Parties will at all times
maintain in the Investment Portfolio, free and clear of any and all Liens,
assets consisting of cash, cash equivalents and Marketable Securities having a
fair market value, calculated on a pre-tax basis, of not less than $100,000,000.

         7.13 Additional Guarantors. The Borrower will cause each current or
future Material Subsidiary to guarantee the prompt payment and performance when
due of the Obligations in accordance with the terms and provisions of the
Subsidiary Guaranty. As soon as practicable and in any event within 30 days
after any Person becomes a direct or indirect Material Subsidiary, the Borrower
shall provide the Administrative Agent with written notice thereof and shall
cause such Person to execute a Subsidiary Guaranty Joinder Agreement in
substantially the same form as Schedule 1 to the Subsidiary Guaranty.
Notwithstanding the foregoing, the Lenders agree to release any Material
Subsidiary from its obligations under the Subsidiary Guaranty if the Capital
Stock of such Subsidiary is sold or transferred pursuant to an Asset Disposition
permitted under Section 8.5 or if such Subsidiary becomes a party to a merger or
consolidation in connection with a permitted Asset Disposition (such release to
be delivered upon the consummation of the relevant transaction).



                                       53


                                  ARTICLE VIII
                               NEGATIVE COVENANTS

         The Borrower and the Parent hereby jointly and severally covenant and
agree that, so long as this Agreement is in effect or any amounts payable
hereunder or under any other Credit Document shall remain outstanding or any
Letter of Credit is outstanding, and until all of the Commitments hereunder
shall have terminated:

         8.1 Indebtedness. No member of the Consolidated Group will create,
incur or assume any Indebtedness if any Event of Default has occurred and is
continuing at the time such Indebtedness is to be created, incurred or assumed
or if any Event of Default would result from the creation, incurrence or
assumption of such Indebtedness.

         8.2 Liens. No member of the Consolidated Group will contract, create,
incur, assume or permit to exist, directly or indirectly, any Lien with respect
to any of its Property, whether now owned or after acquired, except for the
following types and categories of Liens ("Permitted Liens"):

                  (i) Liens (other than Liens created or imposed under ERISA)
         for taxes, assessments or governmental charges or levies not yet due or
         Liens for taxes being contested in good faith by appropriate
         proceedings for which adequate reserves determined in accordance with
         GAAP have been established (and as to which the Property subject to any
         such Lien is not yet subject to foreclosure, sale or loss on account
         thereof);

                  (ii) statutory Liens of landlords and Liens of carriers,
         warehousemen, mechanics, materialmen and suppliers and other Liens
         imposed by law or pursuant to customary reservations or retentions of
         title arising in the ordinary course of business, provided that such
         Liens secure only amounts not yet due and payable or, if due and
         payable, are unfiled and no other action has been taken to enforce the
         same or are being contested in good faith by appropriate proceedings
         for which adequate reserves determined in accordance with GAAP have
         been established (and as to which the Property subject to any such Lien
         is not yet subject to foreclosure, sale or loss on account thereof);

                  (iii) Liens (other than Liens created or imposed under ERISA)
         incurred or deposits made by any member of the Consolidated Group in
         the ordinary course of business in connection with workers'
         compensation, unemployment insurance and other types of insurance, or
         to secure the performance of tenders, statutory obligations, bids,
         leases, government contracts, performance and return-of-money bonds and
         other similar obligations (exclusive of obligations for the payment of
         Funded Debt);

                  (iv) Liens in connection with attachments or judgments
         (including judgment or appeal bonds), provided that the judgments
         secured shall, within 60 days after the entry




                                       54


         thereof, have been discharged or execution thereof stayed pending
         appeal, or shall have been discharged within 60 days after the
         expiration of any such stay;

                  (v) easements, rights-of-way, covenants, restrictions
         (including zoning restrictions), defects or irregularities in title and
         other similar charges or encumbrances not, in any material respect,
         impairing the use of the Property for its intended purposes;

                  (vi) Liens arising from UCC financing statements (or
         equivalent filings, registrations or agreements in foreign
         jurisdictions) relating to, leases permitted by this Agreement;

                  (vii) Liens in favor of customs and revenue authorities
         arising as a matter of law to secure payment of customs duties in
         connection with the importation of goods;

                  (viii) Liens created in connection with trading activities in
         the Investment Portfolio and secured only by Marketable Securities in
         the Investment Portfolio, so long as the Borrower remains at all times
         in compliance with the requirements of Section 7.12;

                  (ix) normal and customary rights of setoff upon deposits of
         cash in favor of banks or other depository institutions;

                  (x) Liens of a collection bank arising under Section 4-210 of
         the UCC on items in the course of collection; and

                  (xi) other Liens (in addition to those permitted by the
         foregoing clauses (i) through (x)) securing Indebtedness at any time
         outstanding which in the aggregate does not exceed 5% of Consolidated
         Total Capitalization.

         8.3 Merger and Consolidation. No member of the Consolidated Group will
enter into any merger or consolidation (other than as contemplated by the
Spinoff/Merger or in connection with any other disposition of the oil and gas
exploration and production business of the Consolidated Group), except that:

                  (i) the Parent or Borrower may enter into any merger or
         consolidation with any Person which is not a Credit Party so long as
         (A) it is the surviving entity of such merger or consolidation and
         remains fully obligated under the Credit Documents for payment of the
         Obligations, and (B) no Default or Event of Default has occurred or is
         continuing or would be created by or result from such merger or
         consolidation, including a breach of the covenants set forth in
         Sections 7.11 and 7.12;

                  (ii) the Borrower and the Parent may merge or consolidate with
         or into each other, so long as no Default or Event of Default has
         occurred or is continuing or would be created by or result from such
         merger or consolidation, including a breach of the covenants set forth
         in Sections 7.11 and 7.12;



                                       55


                  (iii) any Material Subsidiary may be party to a merger or
         consolidation with another Material Subsidiary or with the Borrower or
         the Parent so long as no Default or Event of Default has occurred or is
         continuing or would be created by or result from such merger or
         consolidation, including a breach of the covenants set forth in
         Sections 7.11 and 7.12, provided that, if the Borrower or the Parent is
         a party to such transaction, it shall be the surviving entity; and

                  (iv) a Subsidiary of the Borrower or of the Parent may enter
         into a transaction of merger or consolidation in connection with an
         Asset Disposition permitted under clauses (i), (viii) or (ix) of
         Section 8.5.

         8.4 Dissolution. No Credit Party will dissolve, liquidate or wind up
its affairs.

         8.5 Asset Dispositions. No member of the Consolidated Group will make
any Asset Disposition, except for the following:

                  (i) the transactions contemplated by the Spinoff/Merger (or,
         in the event the Spinoff/Merger is not consummated, any other sale,
         transfer or other disposition, whether by spinoff or otherwise, of the
         oil and gas exploration and production business of the Consolidated
         Group or the stock of Cimarex, Helmerich & Payne Energy Services, Inc.,
         or Mountain Acquisition Co.);

                  (ii) the sale of inventory in the ordinary course of business;

                  (iii) the sale, lease or other disposition of drillings rigs,
         machinery and other equipment which is no longer used or useful in the
         conduct of business or which is obsolete or worn-out;

                  (iv) the sale, lease, transfer or disposition of any Property
         by any member of the Consolidated Group to another member of the
         Consolidated Group, provided that, if the Property is transferred to a
         member of the Consolidated Group which is not a Credit Party and such
         transfer would cause it to become a Material Subsidiary, the Borrower
         shall cause such member to provide a Subsidiary Guaranty Joinder
         Agreement in accordance with the requirements of Section 7.13;

                  (v) use or operating agreements or short-term Operating Leases
         entered into by any member of the Consolidated Group as owner or lessor
         with respect to personal property in the ordinary course of business
         and on market terms;

                  (vi) Operating Leases entered into by any member of the
         Consolidated Group as owner or lessor with respect to office space in
         the ordinary course of business and on market terms;



                                       56


                  (vii) sales and trades of securities (including the execution
         and performance of Forward Sale Contacts), as long as the Credit
         Parties remain at all times in compliance with the requirements of
         Section 7.12;

                  (viii) the sale or other disposition of any real property (or
         the sale or other disposition of the Capital Stock of a Subsidiary of
         the Borrower or the Parent formed for the purpose of effectuating the
         sale or other disposition of real property), so long as no Default or
         Event of Default has occurred or is continuing or would be created by
         or result from such sale or other disposition, including a breach of
         the covenants set forth in Sections 7.11 and 7.12; and

                  (ix) the sale, transfer, lease or other disposition (or any
         series of related sales, transfers, leases or other dispositions) of
         Properties of the Consolidated Group, including the Capital Stock of
         any Subsidiary of the Borrower or the Parent which is not a Credit
         Party, during any fiscal year which have an aggregate fair market value
         of less than $25,000,000, so long as, at the time of any such sale or
         other disposition, no Default or Event of Default has occurred or is
         continuing or would be created by or result from such sale or other
         disposition, including a breach of the covenants set forth in Sections
         7.11 and 7.12.

         8.6 Transactions with Affiliates. No member of the Consolidated Group
will enter into or permit to exist any transaction or series of transactions
with any officer, director, shareholder, Subsidiary or Affiliate of such Person
other than (i) extensions of credit and transfers of cash and assets by and
between Credit Parties, (ii) transactions permitted by this Agreement, (iii) to
the extent comparable with other members of the Borrower's industry peer group,
payment of compensation (including benefits) to and reimbursement of expenses of
officers and directors, including stock options and grant and stock option and
grant plans, directors' fees, directors' stock option or grant plans, and
directors' reimbursable expenses, and (iv) except as otherwise specifically
limited in this Agreement, other transactions which are entered into in the
ordinary course of such Person's business.

         8.7 Fiscal Year; Organizational Documents. No member of the
Consolidated Group will change its fiscal year or amend, modify or change any of
its Charter Documents in a manner adverse to the interests of the Lenders.

         8.8 Contingent Debt. No member of the Consolidated Group will assume,
incur or permit to exist any Contingent Debt other than (i) Contingent Debt
relating to Indebtedness of the Consolidated Group permitted under Section 8.1,
(ii) the endorsement of checks or other negotiable instruments in the ordinary
course of business, and (iii) Contingent Debt which does not exceed $10,000,000
in the aggregate at any time outstanding. No member of the Consolidated Group
will enter into any Hedging Agreement except in the ordinary course of business
to manage existing or reasonably anticipated risks.



                                       57


                                   ARTICLE IX
                                EVENTS OF DEFAULT

         9.1 Events of Default. An Event of Default shall exist upon the
occurrence of any of the following specified events (each an "Event of
Default"):

                  (a) Non-Payment. There shall occur:

                           (i) a default in the payment when due of principal on
                  any of the Loans; or

                           (ii) a default in the payment when due of any
                  interest on any of the Loans, or of any reimbursement
                  obligations arising from drawings under Letters of Credit, or
                  of any Fees or other amounts owing hereunder, under any of the
                  other Credit Documents or in connection herewith or therewith,
                  and such default shall continue unremedied for a period of
                  five days; or

                  (b) Representations. Any representation, warranty or statement
         made or deemed to be made by the Borrower herein or any Credit Party in
         any of the other Credit Documents or in any statement or certificate
         delivered or required to be delivered pursuant hereto or thereto, shall
         prove untrue in any material respect on the date as of which it was
         made or deemed to have been made; or

                  (c)      Covenants.  There shall occur a

                           (i) default in the due performance or observance of
                  any term, covenant or agreement contained in Sections 7.2,
                  7.4, 7.9, 7.10, 7.11, 7.12 or 7.13 or in Sections 8.3, 8.4,
                  8.5, 8.6, 8.7 or 8.8, inclusive;

                           (ii) default in the due performance or observance of
                  any term, covenant or agreement contained in Sections 7.1(a),
                  (b), (c), (d) or (j) or in Sections 8.1 or 8.2 and such
                  default shall continue unremedied for a period of at least
                  five days after the earlier of an Executive Officer of a
                  Credit Party becoming aware of such default or notice thereof
                  by the Administrative Agent; or

                           (iii) default in the due performance or observance by
                  it of any term, covenant or agreement (other than those
                  referred to in subsection (a), (b), (c)(i) or (c)(ii) of this
                  Section 9.1) contained in this Agreement or any other Credit
                  Document and such default shall continue unremedied for a
                  period of at least 30 days after the earlier of an Executive
                  Officer of a Credit Party becoming aware of such default or
                  notice thereof by the Administrative Agent; or

                  (d) Other Credit Documents. Any Credit Document shall fail to
         be in full force and effect or to give the Administrative Agent and/or
         the Lenders the rights, powers




                                       58


         and privileges purported to be created thereby, or any Credit Party
         shall so state in writing; or

                  (e) Guaranties. Except as the result of or in connection with
         a merger or disposition of a Subsidiary permitted under Section 8.3 or
         Section 8.5, the guaranty given by any Guarantor (including any Person
         which becomes a Guarantor after the Closing Date in accordance with
         Section 7.13) or any provision of Article XI or of the Subsidiary
         Guaranty shall cease to be in full force and effect, or any Guarantor
         (including any Person which becomes a Guarantor after the Closing Date
         in accordance with Section 7.13) or any Person acting by or on behalf
         of such Guarantor shall deny or disaffirm such Guarantor's obligations
         under Article XI or the Subsidiary Guaranty or any Guarantor shall
         default in the due performance or observance of any term, covenant or
         agreement on its part to be performed or observed pursuant to Article
         XI or the Subsidiary Guaranty; or

                  (f) Bankruptcy. Any Bankruptcy Event shall occur with respect
         to any member of the Consolidated Group; or

                  (g) Defaults under Other Agreements.

                           (i) The occurrence of an "Event of Default" or other
                  default and the expiration of any applicable grace period
                  applicable thereto under (A) the Bank One Agreement or (B) the
                  Medium Term Notes or any indenture or other agreement
                  governing the Medium Term Notes;

                           (ii) Any member of the Consolidated Group shall
                  default in the performance or observance (beyond the
                  applicable grace period with respect thereto, if any) of any
                  material obligation or condition of any contract or lease
                  material to the members of the Consolidated Group taken as a
                  whole, and such default has had or could reasonably be
                  expected to result in a Material Adverse Effect; or

                           (iii) With respect to any Indebtedness (other than
                  Indebtedness outstanding under this Agreement) in excess of
                  $5,000,000 in the aggregate for the members of the
                  Consolidated Group taken as a whole, (A) any member of the
                  Consolidated Group shall default in any payment (beyond the
                  applicable grace period with respect thereto, if any) with
                  respect to any such Indebtedness; (B) there shall occur and
                  continue a default in the observance or performance of any
                  provision relating to such Indebtedness or contained in any
                  instrument or agreement evidencing, securing or relating
                  thereto, or any other event or condition shall occur or
                  condition exist, the effect of which default or other event or
                  condition is to cause, or to permit the holder or holders of
                  such Indebtedness (or trustee or agent on behalf of such
                  holders) to cause, any such Indebtedness to become due prior
                  to its stated maturity; or (C) any such Indebtedness shall be
                  declared due and payable, or required to be prepaid other than
                  by a regularly scheduled required prepayment, prior to the
                  stated maturity thereof; or



                                       59


                  (h) Judgments. One or more judgments or decrees shall be
         entered against one or more of the members of the Consolidated Group
         involving a liability of $20,000,000 or more in the aggregate (to the
         extent not paid or fully covered by insurance provided by a carrier who
         has acknowledged coverage and has the ability to perform) and any such
         judgments or decrees shall not have been vacated, discharged or stayed
         or bonded pending appeal within 30 days from the entry thereof; or

                  (i) ERISA. Any of the following events or conditions, if such
         event or condition could reasonably be expected to involve possible
         taxes, penalties, and other liabilities against one or more members of
         the Consolidated Group in an aggregate amount in excess of $5.0
         million: (i) any "accumulated funding deficiency," as such term is
         defined in Section 302 of ERISA and Section 412 of the IRC, whether or
         not waived, shall exist with respect to any Plan, or any lien shall
         arise on the assets of any member of the Consolidated Group or any
         ERISA Affiliate in favor of the PBGC or a Plan; (ii) an ERISA Event
         shall occur with respect to a Single Employer Plan, which is, in the
         reasonable opinion of the Administrative Agent, likely to result in the
         termination of such Plan for purposes of Title IV of ERISA; (iii) an
         ERISA Event shall occur with respect to a Multiemployer Plan or
         Multiple Employer Plan, which is, in the reasonable opinion of the
         Administrative Agent, likely to result in (A) the termination of such
         Plan for purposes of Title IV of ERISA, or (B) any member of the
         Consolidated Group or any ERISA Affiliate incurring any liability in
         connection with a withdrawal from, reorganization of (within the
         meaning of Section 4241 of ERISA), or insolvency (within the meaning of
         Section 4245 of ERISA) of such Plan; or (iv) any prohibited transaction
         (within the meaning of Section 406 of ERISA or Section 4975 of the IRC)
         or breach of fiduciary responsibility shall occur which may subject any
         member of the Consolidated Group or any ERISA Affiliate to any
         liability under Sections 406, 409, 502(i), or 502(l) of ERISA or
         Section 4975 of the IRC, or under any agreement or other instrument
         pursuant to which any member of the Consolidated Group or any ERISA
         Affiliate has agreed or is required to indemnify any person against any
         such liability; or

                  (j) Licenses. Any License necessary for any Credit Party to
         carry on its business shall be cancelled or revoked by the applicable
         Governmental Authority or shall be limited or altered by the applicable
         Governmental Authority in a manner which has had or could reasonably be
         expected to result in a Material Adverse Effect (unless such
         cancellation, revocation, limitation or alteration is being contested
         by such Credit Party in good faith by appropriate legal proceedings and
         the effectiveness of such action has been stayed pending the outcome of
         such proceedings), or any suit, action, proceeding or investigation
         shall be commenced or initiated seeking to cancel, revoke, limit or
         alter any License which is necessary for any Credit Party to carry on
         its business (unless such suit, action, proceeding or investigation is
         being contested or defended in good faith by appropriate legal
         proceedings, including appellate review, and the effectiveness of any
         proposed action has been stayed pending the outcome of such
         proceedings); or

                  (k) Ownership. There shall occur a Change of Control.



                                       60


         9.2 Acceleration; Remedies. Upon the occurrence of an Event of Default,
and at any time thereafter unless and until such Event of Default has been
waived by the requisite Lenders (pursuant to the voting requirements of Section
12.6) or cured to the satisfaction of the requisite Lenders (pursuant to the
voting procedures in Section 12.6), the Administrative Agent may, and upon the
request and direction of the Required Lenders shall, by written notice to the
Borrower take any of the following actions:

                  (a) Termination of Commitments. Declare the Commitments
         terminated whereupon the Commitments shall be immediately terminated.

                  (b) Acceleration. Declare the unpaid principal of and any
         accrued interest in respect of all Loans, any reimbursement obligations
         arising from drawings under Letters of Credit and any and all other
         indebtedness or obligations of any and every kind owing by the Borrower
         to the Administrative Agent and/or any of the Lenders hereunder to be
         due whereupon the same shall be immediately due and payable without
         presentment, demand, protest or other notice of any kind, all of which
         are hereby waived by the Borrower. Amounts received after termination
         of the Commitments and acceleration of the maturity of the Loans and
         Obligations hereunder, shall be shared ratably among the Lenders as set
         forth in Section 9.4.

                  (c) Enforcement of Rights. Enforce any and all rights and
         interests created and existing under the Credit Documents and all
         rights of set-off.

Notwithstanding the foregoing, if an Event of Default specified in Section
9.1(f) shall occur with respect to any member of the Consolidated Group, then
the Commitments shall automatically terminate and all Loans, all reimbursement
obligations arising from drawings under Letters of Credit, all accrued interest
in respect thereof, all accrued and unpaid Fees and other indebtedness or
obligations owing to the Administrative Agent and/or any of the Lenders
hereunder by the Borrower automatically shall immediately become due and payable
without the giving of any notice or other action by the Administrative Agent or
the Lenders.

         9.3 Waiver of Event of Default. Notwithstanding anything contained in
Section 9.2, if at any time within 60 days after an acceleration of the Loans
pursuant to Section 9.2, (i) the Borrower shall pay all arrears of interest and
all payments on account of principal which shall have become due otherwise than
by acceleration (with interest on principal and, to the extent permitted by law,
on overdue interest, at the rates specified in this Agreement) and (ii) all
Events of Default and Defaults (other than non-payment of the principal of and
accrued interest on the Loans, in each case which is due and payable solely by
virtue of acceleration) shall be waived pursuant to Section 12.6, the Required
Lenders, by written notice to the Borrower, may at their option rescind and
annul the acceleration and its consequences; but such action shall not affect
any subsequent Event of Default or Default or impair any right consequent
thereon. The provisions of this Section 9.3 are intended merely to bind the
Lenders to a decision which may be made at the election of the Required Lenders
and are not intended to benefit the Borrower and do




                                       61


not grant the Borrower the right to require the Lenders to rescind or annual any
acceleration hereunder, even if the conditions set forth herein are met.

         9.4 Allocation of Payments After Event of Default. Notwithstanding any
other provisions of this Agreement to the contrary, after the occurrence and
during the continuance of an Event of Default, all amounts collected or received
on or in respect of the Obligations (or other amounts owing under the Credit
Documents in connection therewith) shall be paid over or delivered as follows:

                  FIRST, to the payment of all reasonable out-of-pocket costs
         and expenses (including reasonable attorneys' fees) of the
         Administrative Agent in connection with enforcing the rights and
         remedies of the Lenders under the Credit Documents and any protective
         advances made with respect thereto;

                  SECOND, to payment of any fees owed to the Administrative
         Agent hereunder;

                  THIRD, to the payment of all reasonable out-of-pocket costs
         and expenses (including reasonable attorneys' fees) of each of the
         Lenders hereunder in connection with enforcing its rights under the
         Credit Documents or otherwise with respect to the Obligations owing to
         such Lender;

                  FOURTH, to the payment of all accrued interest and fees on or
         in respect of the Obligations;

                  FIFTH, to the payment of the outstanding principal amount of
         the Obligations hereunder (including the payment or cash
         collateralization of the outstanding LOC Obligations);

                  SIXTH, to all other Obligations hereunder and other
         obligations which shall have become due and payable under the Credit
         Documents otherwise and not repaid pursuant to clauses "FIRST" through
         "FIFTH" above; and

                  SEVENTH, to the payment of the surplus, if any, to the
         Borrower or such other Persons as may be lawfully entitled to receive
         such surplus.

In carrying out the foregoing, (i) amounts received shall be applied in the
order provided until exhausted prior to application to the next succeeding
category; and (ii) except as otherwise provided, the Lenders shall receive
amounts ratably in accordance with their respective pro rata share (based on the
proportion that the then outstanding Obligations held by such Lenders bears to
the aggregate amount of Obligations then outstanding) of amounts available to be
applied pursuant to clauses "THIRD," "FOURTH," "FIFTH" and "SIXTH"; and (iii) to
the extent that any amounts available for distribution pursuant to clause
"FIFTH" above are attributable to the issued but undrawn amount of outstanding
Letters of Credit, such amounts shall be held by the Administrative Agent in a
cash collateral account and applied (A) first, to reimburse the Issuing Lender
for any drawings under such Letters of Credit and (B) then, following the
expiration of all




                                       62


Letters of Credit, to all other obligations of the types described in clauses
"FOURTH" and "FIFTH" above in the manner provided in this Section 9.4

                                    ARTICLE X
                                AGENCY PROVISIONS

         10.1 Appointment, Powers and Immunities. Each Lender hereby irrevocably
appoints and authorizes the Administrative Agent to act as its agent under this
Agreement and the other Credit Documents with such powers and discretion as are
specifically delegated to the Administrative Agent by the terms of this
Agreement and the other Credit Documents, together with such other powers as are
reasonably incidental thereto. Each Lender further authorizes and directs the
Administrative Agent to execute and deliver releases (or similar agreements) to
give effect to the provisions of this Agreement and the other Credit Documents,
including specifically the provisions of Section 8.5 hereof. The Administrative
Agent (which term as used in this sentence and in Section 10.5 and the first
sentence of Section 10.6 hereof shall include its Affiliates and its own and its
Affiliates' officers, directors, employees, and agents): (i) shall not have any
duties or responsibilities except those expressly set forth in this Agreement
and shall not be a trustee or fiduciary for any Lender; (ii) shall not be
responsible to the Lenders for any recital, statement, representation, or
warranty (whether written or oral) made by a member of the Consolidated Group or
other Lender in or in connection with any Credit Document or any certificate or
other document referred to or provided for in, or received by any of them under,
any Credit Document, or for the value, validity, effectiveness, genuineness,
enforceability, or sufficiency of any Credit Document, or any other document
referred to or provided for therein or for any failure by any Credit Party or
any other Person to perform any of its obligations thereunder; (iii) shall not
be responsible for or have any duty to ascertain, inquire into, or verify the
performance or observance of any covenants or agreements by any Credit Party or
the satisfaction of any condition or to inspect the property (including the
books and records) of any Credit Party or any of its Subsidiaries or Affiliates;
(iv) shall not be required to initiate or conduct any litigation or collection
proceedings under any Credit Document, except as expressly provided under the
Credit Documents; and (v) shall not be responsible for any action taken or
omitted to be taken by it under or in connection with any Credit Document,
except for its own gross negligence or willful misconduct. The Administrative
Agent may employ agents and attorneys-in-fact and shall not be responsible for
the negligence or misconduct of any such agents or attorneys-in-fact selected by
it with reasonable care.

         10.2 Reliance by Administrative Agent. The Administrative Agent shall
be entitled to rely upon any certification, notice, instrument, writing, or
other communication (including any thereof by telephone or telecopy) believed by
it to be genuine and correct and to have been signed, sent or made by or on
behalf of the proper Person or Persons, and upon advice and statements of legal
counsel (including counsel for any Credit Party), independent accountants, and
other experts selected by the Administrative Agent. The Administrative Agent may
deem and treat the payee of any Note as the holder thereof for all purposes
hereof unless and until the Administrative Agent receives and accepts an
Assignment and Acceptance executed in accordance with Section 12.3(b) hereof. As
to any matters not expressly provided for by this Agreement, the Administrative
Agent shall not be required to exercise any discretion or take any




                                       63


action, but shall be required to act or to refrain from acting (and shall be
fully protected in so acting or refraining from acting) upon the instructions of
the Required Lenders, and such instructions shall be binding on all of the
Lenders; provided, however, that the Administrative Agent shall not be required
to take any action that exposes the Administrative Agent to personal liability
or that is contrary to any Credit Document or applicable law or unless it shall
first be indemnified to its satisfaction by the Lenders against any and all
liability and expense which may be incurred by it by reason of taking any such
action.

         10.3 Defaults. The Administrative Agent shall not be deemed to have
knowledge or notice of the occurrence of a Default or Event of Default unless
the Administrative Agent has received written notice from a Lender or a Credit
Party specifying such Default or Event of Default and stating that such notice
is a "Notice of Default." In the event that the Administrative Agent receives
such a notice of the occurrence of a Default or Event of Default, the
Administrative Agent shall give prompt notice thereof to the Lenders. The
Administrative Agent shall (subject to Section 12.2) take such action with
respect to such Default or Event of Default as shall reasonably be directed by
the Required Lenders (or such other Lenders as required by Section 12.6),
provided that, unless and until the Administrative Agent shall have received
such directions, the Administrative Agent may (but shall not be obligated to)
take such action, or refrain from taking such action, with respect to such
Default or Event of Default as it shall deem advisable in the best interest of
the Lenders.

         10.4 Rights as a Lender. With respect to its Commitment and the Loans
made by it, Bank of Oklahoma (and any successor acting as Administrative Agent)
in its capacity as a Lender hereunder shall have the same rights and powers
hereunder as any other Lender and may exercise the same as though it were not
acting as the Administrative Agent, and the term "Lender" or "Lenders" shall,
unless the context otherwise indicates, include the Administrative Agent in its
individual capacity. Bank of Oklahoma (and any successor acting as
Administrative Agent) and its Affiliates may (without having to account therefor
to any Lender) accept deposits from, lend money to, make investments in, provide
services to, and generally engage in any kind of lending, trust, or other
business with any Credit Party or any of its Subsidiaries or Affiliates as if it
were not acting as Administrative Agent, and Bank of Oklahoma (and any successor
acting as Administrative Agent) and its Affiliates may accept fees and other
consideration from any Credit Party or any of its Subsidiaries or Affiliates for
services in connection with this Agreement or otherwise without having to
account for the same to the Lenders.

         10.5 Indemnification. The Lenders agree to indemnify the Administrative
Agent (to the extent not reimbursed under Section 12.5 hereof, but without
limiting the obligations of the Borrower under Section 12.5) ratably (in
accordance with their respective Revolving Commitments (or, if the Revolving
Commitments have been terminated, their respective interests in the outstanding
Loans and Participation Interests in Letters of Credit) for any and all
liabilities, obligations, losses, damages, penalties, actions, judgments, suits,
costs, expenses (including reasonable attorneys' fees), or disbursements of any
kind and nature whatsoever that may be imposed on, incurred by or asserted
against the Administrative Agent in such capacity (including by any Lender) in
any way relating to or arising out of any Credit Document or the transactions
contemplated thereby or any action taken or omitted by the Administrative Agent
under any




                                       64


Credit Document; provided that no Lender shall be liable for any of the
foregoing to the extent they arise from the gross negligence or willful
misconduct of the Person to be indemnified. Without limitation of the foregoing,
each Lender agrees to reimburse the Administrative Agent promptly upon demand
for its ratable share of any costs or expenses payable by the Borrower under
Section 12.5, to the extent that the Administrative Agent is not promptly
reimbursed for such costs and expenses by the Borrower. The agreements in this
Section 10.5 shall survive the repayment of the Loans, LOC Obligations and other
obligations under the Credit Documents and the termination of the Commitments
hereunder.

         10.6 Non-Reliance on Administrative Agent and Other Lenders. Each
Lender agrees that it has, independently and without reliance on the
Administrative Agent or any other Lender, and based on such documents and
information as it has deemed appropriate, made its own credit analysis of the
Credit Parties and their Subsidiaries and decision to enter into this Agreement
and that it will, independently and without reliance upon the Administrative
Agent or any other Lender, and based on such documents and information as it
shall deem appropriate at the time, continue to make its own analysis and
decisions in taking or not taking action under the Credit Documents. Except for
notices, reports, and other documents and information expressly required to be
furnished to the Lenders by the Administrative Agent hereunder, the
Administrative Agent shall not have any duty or responsibility to provide any
Lender with any credit or other information concerning the affairs, financial
condition, or business of any Credit Party or any of its Subsidiaries or
Affiliates that may come into the possession of the Administrative Agent or any
of its Affiliates.

         10.7 Successor Administrative Agent. The Administrative Agent may
resign at any time by giving notice thereof to the Lenders and the Credit
Parties. Upon any such resignation, the Required Lenders shall have the right to
appoint a successor Administrative Agent. If no successor Administrative Agent
shall have been so appointed by the Required Lenders and shall have accepted
such appointment within 30 days after the retiring Administrative Agent's giving
of notice of resignation, then the retiring Administrative Agent may, on behalf
of the Lenders, appoint a successor Administrative Agent which shall be a
commercial bank organized under the laws of the United States having combined
capital and surplus of at least $100,000,000. Upon the acceptance of any
appointment as Administrative Agent hereunder by a successor, such successor
shall thereupon succeed to and become vested with all the rights, powers,
discretion, privileges, and duties of the retiring Administrative Agent, and the
retiring Administrative Agent shall be discharged from its duties and
obligations hereunder. After any retiring Administrative Agent's resignation
hereunder as Administrative Agent, the provisions of this Article X shall
continue in effect for its benefit in respect of any actions taken or omitted to
be taken by it while it was acting as Administrative Agent.

                                   ARTICLE XI
                                 PARENT GUARANTY

         11.1 Guaranty. The Parent unconditionally and irrevocably guarantees
the full and punctual payment of all existing and future Obligations of the
Borrower to the Lenders or the Administrative Agent arising under or in
connection with or evidenced by this Agreement or any





                                       65


other Credit Document, as and when the same shall become due and payable,
whether at the stated maturity, upon acceleration or otherwise, in accordance
with the terms hereof and thereof. If the Borrower fails to pay when due any
Obligation guaranteed hereby, the Parent unconditionally agrees to cause such
payment to be made punctually as and when the same shall become due and payable,
whether at the stated maturity, upon acceleration or otherwise.

         11.2 Guarantee Unconditional. The obligations of the Parent under this
Article XI are absolute and unconditional. Without limiting the generality of
the foregoing, the obligations of the Parent under this Article XI shall not be
impaired, released, discharged or otherwise affected by:

                  (i) any extension, renewal, settlement, compromise, waiver or
         release in respect of any obligation of the Borrower or any other
         Credit Party under this Agreement or any other Credit Document, by
         operation of law or otherwise;

                  (ii) any modification, amendment or waiver of or supplement to
         this Agreement or any Credit Document;

                  (iii) any release, impairment or invalidity of any guarantee
         or other liability of any other Credit Party or third party for any
         obligation of the Borrower under this Agreement or any other Credit
         Document;

                  (iv) any change in the corporate existence, structure or
         ownership of the Borrower or any other Credit Party or any insolvency,
         bankruptcy, reorganization or other similar proceeding affecting the
         Borrower or any other Credit Party;

                  (v) the existence of any claim, set-off or other rights which
         the Parent may have at any time against the Borrower or any other
         Credit Party, the Administrative Agent, any Lender or any other Person,
         whether or not arising in connection with the Revolving Loans and this
         Agreement or any unrelated transaction;

                  (vi) any invalidity or unenforceability relating to or against
         the Borrower or any other Credit Party for any reason of this Agreement
         or any other Credit Document, or any provision of applicable law or
         regulation purporting to prohibit the payment by any other Credit Party
         of any amount payable by it under this Agreement or any other Credit
         Document; or

                  (vii) any other act or omission to act or delay of any kind by
         any other Credit Party, any Lender or any other Person or any other
         circumstance which might, but for the provisions of this Section 11.2,
         constitute a legal or equitable discharge of the Parent's obligations
         under this Article XI.

         11.3 Discharge Only Upon Payment in Full; Reinstatement in Certain
Circumstances. The Parent's obligations under this Article XI constitute a
continuing guaranty and shall remain in full force and effect until the
Revolving Commitments shall have been terminated, all Letters




                                       66


of Credit shall have expired or been terminated, and all amounts payable under
this Agreement and the Credit Documents shall have been indefeasibly paid in
full. If at any time any amount payable by the Borrower under this Agreement or
any other Credit Document is rescinded or must be otherwise restored or returned
upon the insolvency, bankruptcy or reorganization of the Borrower or any other
Credit Party or otherwise, the Parent's obligations under this Article XI with
respect to such payment shall be reinstated at such time as though such payment
had become due but had not been made at such time.

         11.4 Waiver. The Parent irrevocably waives acceptance hereof,
presentment, demand, protest and any notice not provided for herein, as well as
any requirement that at any time any action be taken by any Person against the
Borrower or other Credit Party or any other Person.

         11.5 Subrogation. If the Parent makes any payment under this Article XI
with respect to the obligations of the Borrower, the Parent shall be subrogated
to the rights of the payee against the Borrower with respect to the portion of
such obligations paid by the Parent; provided that the Parent shall not enforce
any payment by way of subrogation or contribution against the Borrower so long
as any amount payable under this Agreement or any other Credit Document remains
unpaid.

         11.6 Stay of Acceleration. If acceleration of the time for payment of
any amount payable by the Borrower under this Agreement or any other Credit
Document is stayed upon the insolvency, bankruptcy or reorganization of the
Borrower, all such amounts otherwise subject to acceleration under the terms of
such Credit Document shall nonetheless be payable by the Parent under this
Article XI forthwith on demand by the Administrative Agent made at the request
of the Required Lenders.

         11.7 Successors and Assigns. The guarantee by the Parent under this
Article XI is for the benefit of the Administrative Agent and the Lenders, and
their respective successors and assigns. If any Revolving Loans, participations
in Letters of Credit or Swingline Loans or other amounts payable under this
Agreement and the other Credit Documents are assigned pursuant to Section
12.3(b), the rights under this Article XI, to the extent applicable to the
indebtedness so assigned, shall be transferred with such indebtedness.

                                   ARTICLE XII
                               GENERAL PROVISIONS

         12.1 Notices. Except as otherwise expressly provided herein, all
notices and other communications shall have been duly given and shall be
effective (a) when delivered, (b) when transmitted via telecopy (or other
facsimile device) to the number set out below, (c) the Business Day following
the day on which the same has been delivered prepaid to a reputable national
overnight air courier service, or (d) the third Business Day following the day
on which the same is sent by certified or registered mail, postage prepaid, in
each case to the respective parties at the address, in the case of the Borrower
and the Administrative Agent, set forth below, and, in the case of the Lenders,
set forth on the signature pages hereto, or at such other address as such party
may specify by written notice to the other parties hereto:



                                       67


         If to the Borrower:

                           Helmerich & Payne International Drilling Co.
                           c/o Helmerich & Payne, Inc.
                           Utica at Twenty-First
                           Tulsa, Oklahoma 74114
                           Fax:  (918) 743-2671
                           Attn:    Chief Financial Officer

                           with a copy to:

                           Helmerich & Payne International Drilling Co.
                           c/o Helmerich & Payne, Inc.
                           Utica at Twenty-First
                           Tulsa, Oklahoma 74114
                           Fax:  (918) 743-2671
                           Attention: General Counsel

         If to the Administrative Agent:

                           Bank of Oklahoma, N.A.
                           Bank of Oklahoma Tower
                           One Williams Center
                           Tulsa, Oklahoma  74192
                           Attn: John M. Tyson, Asst. Vice President
                           Fax:  (918) 280-3366

         12.2 Right of Set-Off; Adjustments. Upon the occurrence and during the
continuance of any Event of Default, each Lender (and each of its Affiliates) is
hereby authorized at any time and from time to time, to the fullest extent
permitted by law, to set off and apply any and all deposits (general or special,
time or demand, provisional or final) at any time held and other indebtedness at
any time owing by such Lender (or any of its Affiliates) to or for the credit or
the account of the Borrower against any and all of the obligations of the
Borrower now or hereafter existing under this Agreement, under the Notes, under
any other Credit Document or otherwise, irrespective of whether such Lender
shall have made any demand under hereunder or thereunder and although such
obligations may be unmatured and regardless of the adequacy of any other
collateral securing the Obligations. Each Credit Party hereby irrevocably waives
any obligation that any Lender may have to any set-off based on the failure of
any Agent or any Lender to exercise any rights that it may have with respect to
any other collateral prior to the exercise of any set-off. Each Lender agrees
promptly to notify the Borrower after any such set-off and application made by
such Lender; provided, however, that the failure to give such notice shall not
affect the validity of such set-off and application. The rights of each Lender
under this Section 12.2 are in addition to other rights and remedies (including
other rights of set-off) that such Lender may have.



                                       68


         12.3     Benefit of Agreement.

                  (a) Parties to Agreement. This Agreement shall be binding upon
         and inure to the benefit of and be enforceable by the parties hereto
         and their respective successors and assigns; provided that the Borrower
         may not assign or transfer any of its interests and obligations without
         prior written consent of each of the Lenders; provided further that the
         rights of each Lender to transfer, assign or grant participations in
         its rights and/or obligations hereunder shall be limited as set forth
         in this Section 12.3.

                  (b) Assignment by a Lender. Each Lender may assign to one or
         more Eligible Assignees all or a portion of its rights and obligations
         under this Agreement (including all or a portion of its Loans, its
         Notes, Commitments and Participations); provided, however, that

                           (i) each such assignment shall be to one or more
                  Eligible Assignees;

                           (ii) except in the case of an assignment to an
                  existing Lender, an Affiliate of an existing Lender or any
                  fund that invests in bank loans or similar extensions of
                  credit and is advised or managed by a Lender (or an Affiliate
                  of a Lender) or an investment advisor (or any Affiliate to an
                  investment advisor) to an existing Lender or an assignment of
                  all of a Lender's rights and obligations under this Agreement,
                  any such partial assignment shall be in an amount at least
                  equal to $1,000,000 (or, if less, the remaining amount of the
                  Commitment being assigned by such Lender) or such lesser
                  amount agreed to by the Borrower and the Administrative Agent;

                           (iii) each such assignment shall consist of the same
                  percentage of all of the Obligations and Commitments of the
                  existing Lender hereunder; and

                           (iv) the parties to such assignment shall execute and
                  deliver to the Administrative Agent for its acceptance an
                  Assignment and Acceptance in the form of Exhibit "H" hereto,
                  together with any Note subject to such assignment and a
                  processing fee of $3,500; provided, no such fee shall be
                  payable in respect of assignments to any Affiliate of a Lender
                  or a fund that invests in bank loans or similar extensions of
                  credit and is advised or managed by a Lender (or an Affiliate
                  of a Lender) or an investment advisor (or any Affiliate to an
                  investment advisor) to an existing Lender.

         Upon execution, delivery, and acceptance of such Assignment and
         Acceptance, the assignee thereunder shall be a party hereto and, to the
         extent of such assignment, have the obligations, rights, and benefits
         of a Lender hereunder and the assigning Lender shall, to the extent of
         such assignment, relinquish its rights and be released from its
         obligations under this Agreement. Upon the consummation of any
         assignment pursuant to this Section 12.3(b), the Administrative Agent
         and the Borrower shall make appropriate




                                       69


         arrangements so that, if required, new Notes are issued to the assignor
         and the assignee. Upon or prior to the consummation of any assignment
         to an assignee that is not already a Lender hereunder pursuant to this
         Section 12.3(b), such assignee shall deliver to the Borrower and the
         Administrative Agent certification as to exemption from deduction or
         withholding of taxes in accordance with Section 4.6. To the extent that
         an assignment of all or any portion of a Lender's rights and
         obligations under this Agreement (including all or a portion of its
         Loans, its Note and its Commitment) pursuant to this Section 12.3(b)
         would, due to circumstances existing at the time of such assignment,
         result in increased costs under Section 4.6 from those being charged by
         the assigning Lender prior to such assignment, then the Borrower shall
         not be obligated to pay such increased costs (although the Borrower
         shall be obligated to pay other increased costs resulting from changes
         after the date of such assignment).

                  (c) Register. The Administrative Agent shall maintain at its
         address referred to in Section 12.1 a copy of each Assignment and
         Acceptance delivered to and accepted by it and a register for the
         recordation of the names and addresses of the Lenders and the
         Commitment of, and principal amount of the Loans owing to, each Lender
         from time to time (the "Register"). The entries in the Register shall
         be conclusive and binding for all purposes, absent manifest error, and
         the Borrower, the Administrative Agent and the Lenders may treat each
         Person whose name is recorded in the Register as a Lender hereunder for
         all purposes of this Agreement. The Register shall be available for
         inspection by the Borrower or any Lender at any reasonable time and
         from time to time upon reasonable prior notice. Any assignment of any
         Loan or other obligations shall be effective only upon an entry with
         respect thereto being made in the Register.

                  (d) Sale of Participations. Each Lender may, without notice to
         or consent of the Borrower, the Administrative Agent, sell
         participations to one or more Persons in all or a portion of its
         rights, obligations or rights and obligations under this Agreement
         (including all or a portion of its Commitment or its Loans); provided,
         however, that (i) such Lender's obligations under this Agreement shall
         remain unchanged, (ii) such Lender shall remain solely responsible to
         the other parties hereto for the performance of such obligations, (iii)
         the participant shall be entitled to the benefit of the yield
         protection provisions contained in Sections 4.2 through 4.7, inclusive,
         and the right of set-off contained in Section 12.2, provided, however,
         the participant shall not be entitled to receive any greater amount
         pursuant to Sections 4.2 through 4.6, inclusive, than the participating
         Lender would have been entitled to receive in respect of the amount of
         the participation sold by such participating Lender to such participant
         had no such participation occurred, and (v) the Credit Parties shall
         continue to deal solely and directly with such Lender in connection
         with such Lender's rights and obligations under this Agreement, and
         such Lender shall retain the sole right to enforce the obligations of
         the Credit Parties relating to the Loans and other obligations owing to
         such Lender and to approve any amendment, modification, or waiver of
         any provision of this Agreement (other than amendments, modifications,
         or waivers (i) decreasing the amount of principal of or the rate at
         which interest is payable on such Loans or Notes, (ii) extending any
         scheduled principal payment date or date fixed for the payment of
         interest on such Loans




                                       70


         or Notes, (iii) extending its Commitment, or (iv) except as the result
         of or in connection with a merger of a member of the Consolidated Group
         permitted under Section 8.3, release the Borrower or substantially all
         of the other Credit Parties from its or their obligations under the
         Credit Documents).

                  (e) Certain Permitted Assignments. Notwithstanding any other
         provision set forth in this Agreement, any Lender may, without notice
         to or consent of the Borrower or the Administrative Agent, at any time
         assign and pledge all or any portion of its Loans and its Note (i) to
         any Federal Reserve Bank as collateral security pursuant to Regulation
         A and any Operating Circular issued by such Federal Reserve Bank or
         (ii) in the case of any Lender which has made Loans hereunder and is a
         fund that invests in bank loans or similar extensions of credit, any
         such Lender may assign or pledge all or any portion of its Loans and
         its Note to any holders of obligations owed, or securities issued, by
         such fund, as security for such obligations or securities, or to any
         trustee for, or any other representative of, such holders. No such
         assignment shall release the assigning Lender from its obligations
         hereunder.

                  (f) Furnishing of Information. Any Lender may furnish any
         information concerning the members of the Consolidated Group in the
         possession of such Lender from time to time to assignees and
         participants (including prospective assignees and participants),
         subject, however, to the provisions of Section 12.16 hereof.

         12.4 No Waiver; Remedies Cumulative. No failure or delay on the part of
the Administrative Agent or any Lender in exercising any right, power or
privilege hereunder or under any other Credit Document and no course of dealing
between the Administrative Agent or any Lender and any of the Credit Parties
shall operate as a waiver thereof; nor shall any single or partial exercise of
any right, power or privilege hereunder or under any other Credit Document
preclude any other or further exercise thereof or the exercise of any other
right, power or privilege hereunder or thereunder. The rights and remedies
provided herein are cumulative and not exclusive of any rights or remedies which
the Administrative Agent or any Lender would otherwise have. No notice to or
demand on any Credit Party in any case shall entitle the Credit Parties to any
other or further notice or demand in similar or other circumstances or
constitute a waiver of the rights of the Administrative Agent or the Lenders to
any other or further action in any circumstances without notice or demand.

         12.5 Expenses; Indemnification.

                  (a) Reimbursement of Expenses. The Borrower agrees to pay on
         demand all costs and expenses reasonably incurred by the Administrative
         Agent in connection with the syndication, preparation, execution,
         delivery, administration, modification, and amendment of this
         Agreement, the other Credit Documents, and the other documents to be
         delivered hereunder, including the reasonable fees and expenses of
         counsel for the Administrative Agent with respect thereto and with
         respect to advising the Administrative Agent as to its rights and
         responsibilities under the Credit Documents. The Borrower further
         agrees to pay on demand all costs and expenses reasonably incurred by
         the




                                       71


         Administrative Agent and the Lenders, if any (including reasonable
         attorneys' fees and expenses), in connection with the enforcement
         (whether through negotiations, legal proceedings, or otherwise) of the
         Credit Documents and the other documents to be delivered thereunder.

                  (b) Indemnification. The Borrower agrees to indemnify and hold
         harmless the Administrative Agent and each Lender and each of their
         Affiliates and their respective officers, directors, trustees,
         employees, agents, and advisors (each, an "Indemnified Party") from and
         against any and all claims, damages, losses, liabilities, costs, and
         expenses (including reasonable attorneys' fees, disbursements and other
         charges) that may be incurred by or asserted or awarded against any
         Indemnified Party, in each case arising out of or in connection with or
         by reason of (including in connection with any investigation,
         litigation, or proceeding and regardless of whether such Indemnified
         Party is a party thereto or preparation of defense in connection
         therewith) the Credit Documents or any of the transactions contemplated
         herein or the actual or proposed use of the proceeds of the Loans,
         except to the extent such claim, damage, loss, liability, cost, or
         expense is found in a final, non-appealable judgment by a court of
         competent jurisdiction to have resulted from such Indemnified Party's
         bad faith, gross negligence or willful misconduct. In the case of an
         investigation, litigation or other proceeding to which the indemnity in
         this Section 12.5 applies, such indemnity shall be effective whether or
         not such investigation, litigation or proceeding is brought by any of
         the Credit Parties, their respective directors, shareholders or
         creditors or an Indemnified Party or any other Person or any
         Indemnified Party is otherwise a party thereto and whether or not the
         transactions contemplated hereby are consummated. The Borrower agrees
         not to assert any claim against the Administrative Agent, any Lender,
         any of their Affiliates, or any of their respective directors,
         officers, employees, attorneys, agents, and advisors, on any theory of
         liability, for special, indirect, consequential, or punitive damages
         arising out of or otherwise relating to the Credit Documents, any of
         the transactions contemplated herein or the actual or proposed use of
         the proceeds of the Loans.

                  (c) Survival. Without prejudice to the survival of any other
         agreement of the Borrower hereunder, the agreements and obligations of
         the Borrower contained in this Section 12.5 shall survive the repayment
         of the Loans, LOC Obligations and other obligations under the Credit
         Documents and the termination of the Commitments hereunder.

         12.6 Amendments, Waivers and Consents. Neither this Agreement nor any
other Credit Document nor any of the terms hereof or thereof (including any
condition precedent to any Extension of Credit set forth in Section 5.2 or 5.3)
may be amended, changed, waived, discharged or terminated unless such amendment,
change, waiver, discharge or termination is in writing entered into by, or
approved in writing by, the Required Lenders and the Borrower, provided,
however, that:

                  (a) without the consent of each Lender affected thereby,
         neither this Agreement nor any other Credit Document may be amended to:



                                       72


                           (i) extend the Revolving Commitment Termination Date
                  or the Facility Maturity Date (whether in accordance with
                  Section 2.5(c) or otherwise), or the final maturity of any
                  Loan or any reimbursement obligation, or any portion thereof,
                  arising from drawings under Letters of Credit;

                           (ii) reduce the rate or extend the time of payment of
                  interest (other than as a result of waiving the applicability
                  of any post-default increase in interest rates) thereon or
                  Fees hereunder;

                           (iii) reduce or waive the principal amount of any
                  Loan or of any reimbursement obligation, or any portion
                  thereof, arising from drawings under Letters of Credit;

                           (iv) increase the Commitment of a Lender over the
                  amount thereof in effect (it being understood and agreed that
                  a waiver of any Default or Event of Default or mandatory
                  reduction in the Commitments shall not constitute a change in
                  the terms of any Commitment of any Lender);

                           (v) release either the Borrower or the Parent from
                  its obligations under the Credit Documents or, except as
                  provided in the last sentence of Section 7.13, release any
                  Material Subsidiary from its obligations under the Credit
                  Documents;

                           (vi) amend, modify or waive any provision of this
                  Section 12.6 or Sections 2.8, 3.5, 3.6, 4.1 through 4.8,
                  9.1(a), 12.2, 12.3, 12.5 or 12.9 or the last sentence of
                  Section 2.5(c);

                           (vii) reduce any percentage specified in, or
                  otherwise modify, the definition of Required Lenders, or
                  change any provision requiring the consent of all Lenders; or

                           (viii) consent to the assignment or transfer by the
                  Borrower or all or substantially all of the other Credit
                  Parties of any of its or their rights and obligations under
                  (or in respect of) the Credit Documents except as permitted
                  thereby.

                  (b) without the consent of the Administrative Agent, no
         provision of Article X may be amended;

                  (c) without the consent of the Issuing Lender, no provision of
         Section 2.6 may be amended; and

                  (d) without the consent of the Swingline Lender, no provision
         of Section 2.7 may be amended.



                                       73


Notwithstanding the fact that the consent of all the Lenders is required in
certain circumstances as set forth above, (x) each Lender is entitled to vote as
such Lender sees fit on any bankruptcy reorganization plan that affects the
Loans, and each Lender acknowledges that the provisions of Section 1126(c) of
the Bankruptcy Code supersedes the unanimous consent provisions set forth
herein. In the event that any fee is imposed by the Lenders as a condition to or
in connection with any amendment, modification, interpretation, termination,
waiver or consent with respect to this Agreement or any of the other Credit
Documents, such fee shall be paid to the Lenders in accordance with their
respective Percentages.

         12.7 Counterparts. This Agreement may be executed in any number of
counterparts, each of which when so executed and delivered shall be an original,
but all of which shall constitute one and the same instrument. It shall not be
necessary in making proof of this Agreement to produce or account for more than
one such counterpart for each of the parties hereto. Delivery by facsimile by
any of the parties hereto of an executed counterpart of this Agreement shall be
as effective as an original executed counterpart hereof and shall be deemed a
representation that an original executed counterpart hereof will be delivered.

         12.8 Headings. The headings of the sections and subsections hereof are
provided for convenience only and shall not in any way affect the meaning or
construction of any provision of this Agreement.

         12.9 Survival. All indemnities set forth herein, including those set
forth in Sections 2.6(e), 4.6, 4.7, 10.5 and 12.5, shall survive the execution
and delivery of this Agreement, the making of the Loans, the issuance of the
Letters of Credit, the repayment of the Loans, LOC Obligations and other
obligations under the Credit Documents and the termination of the Commitments
hereunder, and all representations and warranties made by the Borrower herein
shall survive delivery of the Notes and the making of the Loans hereunder.

         12.10 Governing Law. THIS AGREEMENT AND, UNLESS OTHERWISE EXPRESSLY
PROVIDED THEREIN, THE OTHER CREDIT DOCUMENTS AND THE RIGHTS AND OBLIGATIONS OF
THE PARTIES HEREUNDER AND THEREUNDER SHALL BE GOVERNED BY AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF OKLAHOMA.

         12.11 Waiver of Jury Trial. TO THE EXTENT PERMITTED BY LAW, EACH OF THE
ADMINISTRATIVE AGENT, THE LENDERS, THE BORROWER AND THE PARENT HEREBY
IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS AGREEMENT, ANY OF THE OTHER
CREDIT DOCUMENTS OR THE TRANSACTIONS CONTEMPLATED HEREBY.

         12.12 Severability. If any provision of any of the Credit Documents is
determined to be illegal, invalid or unenforceable, such provision shall be
fully severable and the remaining provisions shall remain in full force and
effect and shall be construed without giving effect to the illegal, invalid or
unenforceable provisions.



                                       74


         12.13 Entire Agreement. This Agreement together with the other Credit
Documents represent the entire agreement of the parties hereto and thereto, and
supersede all prior agreements and understandings, oral or written, if any,
including any commitment letters or correspondence relating to the Credit
Documents or the transactions contemplated herein and therein. To the extent
that there is any irreconcilable conflict or inconsistency between any provision
of this Agreement and any provision of any other Credit Document, this Agreement
shall govern and control. Upon the Closing Date and the making of the initial
Revolving Loan hereunder, the existing revolving credit facility established by
Bank of Oklahoma in favor of the Parent (and all commitments thereunder) will
terminate and all loan agreements, promissory notes and other agreements
relating to such revolving credit facility will be cancelled or terminated,
except that any provisions contained in such agreements relating to
indemnification by the Borrower shall survive such cancellation and termination
to the extent that such agreements expressly provide for such survival.

         12.14 Binding Effect. This Agreement shall become effective at such
time on or after the Closing Date when it shall have been executed by the
Borrower and the Administrative Agent, and the Administrative Agent shall have
received copies hereof (telefaxed or otherwise) which, when taken together, bear
the signatures of each Lender, and thereafter this Agreement shall be binding
upon and inure to the benefit of the Borrower, the Parent, the Administrative
Agent and each Lender and their respective successors and assigns.

         12.15 Termination. The term of this Agreement shall be effective until
no Loans, LOC Obligations or any other amounts payable hereunder or under any of
the other Credit Documents shall remain outstanding, no Letters of Credit shall
be outstanding, and all of the Commitments hereunder shall have expired or been
terminated.

         12.16 Confidentiality. The Administrative Agent and each Lender (each,
a "Lending Party") agrees to keep (and to cause its affiliates and its and their
respective officers, directors, employees, agents and advisors to keep)
confidential any information furnished or made available to it by the Credit
Parties pursuant to this Agreement that is marked confidential; provided that
nothing herein shall prevent any Lending Party from disclosing such information
(i) to any other Lending Party or any Affiliate of any Lending Party, or any
officer, director, employee, agent, or advisor of any Lending Party or Affiliate
of any Lending Party, (ii) to any other Person if reasonably incidental to the
administration of the credit facility provided herein, (iii) as required by any
law, rule, or regulation, (iv) upon the order of any court or administrative
agency or pursuant to subpoena or other legal process, (v) upon the request or
demand of any regulatory agency or authority, (vi) that is or becomes available
to the public or that is or becomes available to any Lending Party other than as
a result of a disclosure prohibited by this Agreement, (vii) in connection with
any litigation to which such Lending Party or any of its Affiliates may be a
party, (viii) to the extent necessary in connection with the exercise of any
remedy under this Agreement or any other Credit Document, (ix) to any direct or
indirect contractual counterparty in swap agreements or such contractual
counterparty's professional advisor (so long as such contractual counterparty or
professional advisor to such contractual counterparty has agreed in a writing
enforceable by the Borrower to be bound by the provisions of this Section 12.16)
and (x) subject to




                                       75


provisions the same as those contained in this Section 12.16, to any actual or
proposed participant or assignee.

         12.17 Spinoff/Merger; Other Proposed Transactions.

                  (a) Spinoff/Merger. Anything in this Agreement to the contrary
         notwithstanding, nothing in this Agreement shall prohibit, and no
         Material Adverse Effect or Default or Event of Default hereunder shall
         result or be deemed to result from, (i) the consummation by the Parent
         of the Spinoff/Merger or any transaction contemplated thereby, or (ii)
         in the event the Spinoff/Merger is not consummated, the sale or other
         disposition of the oil and gas exploration and production business of
         the Consolidated Group and/or the stock of Cimarex, Helmerich & Payne
         Energy Services, Inc., or Mountain Acquisition Co.

                  (b) Other Proposed Transactions. The parties acknowledge that
         one or more members of the Consolidated Group intend to undertake and
         consummate the following proposed transactions (the "Proposed
         Transactions"): (i) the sale and issuance of the Medium Term Notes, and
         (ii) an internal reorganization of the Consolidated Group pursuant to
         which (x) substantially all of the Properties of the Parent (other than
         those primarily related to the oil and gas exploration, production,
         marketing and sales operations of the Parent) will be transferred to
         the Borrower or one or more Subsidiaries of the Borrower and (y) the
         current direct and indirect Subsidiaries of the Parent will become
         direct or indirect subsidiaries of the Borrower. The parties agree
         that, notwithstanding any provision of this Agreement to the contrary,
         provided that the Proposed Transactions are carried out without a
         breach of the covenants in Sections 7.11 or 7.12 and, with respect to
         the internal reorganization, in compliance with the requirements of
         Section 7.13 (if applicable), none of the Proposed Transactions will be
         deemed to have a Material Adverse Effect or otherwise to constitute or
         create a Default or Event of Default under this Agreement.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]
                   [SIGNATURES APPEAR ON THE FOLLOWING PAGES]




                                       76



         IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart
of this Agreement to be duly executed and delivered as of the date first above
written.

BORROWER:                        HELMERICH & PAYNE INTERNATIONAL
                                 DRILLING CO.,
                                 a Delaware corporation


                                 By:____________________________________________
                                 Name:__________________________________________
                                 Title:_________________________________________


PARENT:                          HELMERICH & PAYNE, INC.,
                                 a Delaware corporation


                                 By:____________________________________________
                                 Name:__________________________________________
                                 Title:_________________________________________


ADMINISTRATIVE AGENT:            BANK OF OKLAHOMA, NATIONAL
                                 ASSOCIATION


                                 By:____________________________________________
                                 Name:__________________________________________
                                 Title:_________________________________________

Notice Address:
Bank of Oklahoma Tower
One Williams Center
Tulsa, Oklahoma 74172
Attn: John M. Tyson, Assistant Vice President
Fax: (918) 280-3368



                                       77




LENDERS:                         BANK OF OKLAHOMA, NATIONAL
                                 ASSOCIATION


                                 By:____________________________________________
                                 Name:__________________________________________
                                 Title:_________________________________________

Revolving Commitment:
$50,000,000

Notice Address:
Bank of Oklahoma Tower
One Williams Center
Tulsa, Oklahoma 74192
Attn: John M. Tyson, Assistant Vice President
Fax: (918) 280-3368




                                       78


                                         WELLS FARGO BANK TEXAS, N.A.


                                         By: ________________________________
                                         Name: ______________________________
                                         Title: _____________________________

Revolving Commitment:
$30,000,000

Notice Address:
1000 Louisiana Street, 3rd Floor
Houston, Texas 77002
Attention:  Philip C. Lauinger III, Vice President
FAX:  (713) 739-1087





                                       79

                                         MIDFIRST BANK


                                         By:____________________________________
                                         Name:__________________________________
                                         Title:_________________________________

Revolving Commitment:
$20,000,000

Notice Address:
321 S. Boston, Suite 104
Tulsa, Oklahoma 74103
Attention:  Ed Fariss, Senior Vice President
FAX:  (918) 587-0369




                                       80

                                        UMB BANK, N.A.


                                        By:_____________________________________
                                        Name:___________________________________
                                        Title:__________________________________

Revolving Commitment:
$15,000,000

Notice Address:
1437 S. Boulder
Tulsa, Oklahoma 74119
Attention: Richard J. Lehrter,
  Community Bank President
FAX:  (___) ___-____





                                       81

                                       COMMERCE BANK, N.A.


                                            By: ________________________________
                                            Name: ______________________________
                                            Title: _____________________________

Revolving Commitment:
$10,000,000

Notice Address:
1000 Walnut Street, BB17-1
Kansas City, Missouri  64106
Attention:  David Emley, Assistant Vice President
FAX:  (816) 234-7290




                                       82