EXHIBIT 4.1

 
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                               RYERSON TULL, INC.

                                       TO

                              THE BANK OF NEW YORK
                                               Trustee



                                   _________


                                   INDENTURE

                            Dated as of July 1, 1996


                                Debt Securities



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                               Ryerson Tull, Inc.
                 Certain Sections of this Indenture relating to
                 Sections 3.10 through 3.18, inclusive, of the
                    Trust Indenture Act of 1939, as amended:


 
   Provision of Trust
 Indenture Act of 1939,
      as amended                                               Indenture Section
                                                            
(S) 310(a)(1)           .....................................  6.9
       (a)(2)           .....................................  6.9
       (a)(3)           .....................................  Not Applicable
       (a)(4)           .....................................  Not Applicable
       (b)              .....................................  6.8, 6.10
       (c)              .....................................  Not Applicable
(S) 311(a)              .....................................  6.13
       (b)              .....................................  6.13
       (c)              .....................................  Not Applicable
(S) 312(a)              .....................................  7.1, 7.2(a)
       (b)              .....................................  7.2(b)
       (c)              .....................................  7.2(c)
(S) 313(a)              .....................................  7.3(a)
       (b)              .....................................  7.3(a)
       (c)              .....................................  7.3(a)
       (d)              .....................................  7.3(b)
(S) 314(a)              .....................................  7.4
       (a)(4)           .....................................  1.1, 10.4
       (b)              .....................................  Not Applicable
       (c)(1)           .....................................  1.2
       (c)(2)           .....................................  1.2
       (c)(3)           .....................................  Not Applicable
       (d)              .....................................  Not Applicable
       (e)              .....................................  1.2
(S) 315(a)              .....................................  6.1
       (b)              .....................................  6.2
       (c)              .....................................  6.1
       (d)              .....................................  6.1
       (e)              .....................................  5.14
(S) 316(a)              .....................................  1.1
       (a)(1)(A)        .....................................  5.2, 5.12
       (a)(1)(B)        .....................................  5.13
       (a)(2)           .....................................  Not Applicable
       (b)              .....................................  5.8
       (c)              .....................................  1.4(c)
(S) 317(a)(1)           .....................................  5.3
       (a)(2)           .....................................  5.4
       (b)              .....................................  10.3
(S) 318(a)              .....................................  1.7

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NOTE: This reconciliation and tie shall not, for any purpose, be deemed to be a
      part of the Indenture.

 
                               TABLE OF CONTENTS
                               -----------------
                                                                            Page
                                                                            ----


RECITALS OF THE COMPANY.....................................................   1

                                   ARTICLE I
                        Definitions and Other Provisions
                             of General Application


 
                                                                          
      Section 1.1  Definitions..............................................   1
              Act...........................................................   2
              Affiliate.....................................................   2
              Asset Disposition.............................................   2
              Attributable Debt.............................................   2
              Authenticating Agent..........................................   3
              Board of Directors............................................   3
              Board Resolution..............................................   3
              Book-Entry Security...........................................   3
              Business Day..................................................   3
              Capital Lease Obligations.....................................   3
              Capital Stock.................................................   3
              Commission....................................................   3
              Company.......................................................   4
              Company Request or Company Order..............................   4
              Consolidated Net Income.......................................   4
              Consolidated Net Tangible Assets..............................   4
              Consolidated Net Worth........................................   4
              Corporate Trust Office........................................   4
              Corporation...................................................   4
              Debt..........................................................   4
              Defaulted Interest............................................   5
              Depository....................................................   5
              Disqualified Stock............................................   5
              Event of Default..............................................   5
              Funded Debt...................................................   5
              Guarantee.....................................................   5
 
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NOTE: This table of contents shall not, for any purpose, be deemed to be a part
      of the Indenture.

                                       ii

 

 
                                                                          
              Holder........................................................   6
              Incur.........................................................   6
              Indenture.....................................................   6
              Interest......................................................   7
              Interest Payment Date.........................................   7
              Investment Grade..............................................   7
              Lien..........................................................   7
              Maturity......................................................   7
              Moody's.......................................................   7
              Officers' Certificate.........................................   7
              Opinion of Counsel............................................   7
              Original Issue Discount Security..............................   7
              Outstanding...................................................   7
              Paying Agent..................................................   8
              Permitted Liens...............................................   9
              Person........................................................   9
              Place of Payment..............................................   9
              Predecessor Security..........................................   9
              Principal Property............................................   9
              Redemption Date...............................................   9
              Redemption Price..............................................   9
              Regular Record Date...........................................   9
              Restricted Payment............................................  10
              Restricted Subsidiary.........................................  10
              S&P...........................................................  10
              Sale and Leaseback Transaction................................  10
              Securities....................................................  10
              Security Register and Security Registrar......................  10
              Special Record Date...........................................  10
              Stated Maturity...............................................  10
              Subsidiary....................................................  10
              Trust Indenture Act...........................................  10
              Trustee.......................................................  11
              U.S. Government Obligation....................................  11
              Vice President................................................  11
              Voting Stock..................................................  11
              Wholly-Owned Restricted Subsidiary............................  11

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NOTE: This table of contents shall not, for any purpose, be deemed to be a part
      of the Indenture.

                                      iii

 

 
                                                                          
     Section 1.2   Compliance Certificates and Opinions.....................  12
     Section 1.3   Form of Documents Delivered to Trustee...................  12
     Section 1.4   Acts of Holders; Record Dates............................  13
     Section 1.5   Notices, Etc. to Trustee and Company.....................  14
     Section 1.6   Notice to Holders; Waiver................................  14
     Section 1.7   Conflict with Trust Indenture Act........................  15
     Section 1.8   Effect of Headings and Table of Contents.................  15
     Section 1.9   Successors and Assigns...................................  15
     Section 1.10  Separability Clause......................................  15
     Section 1.11  Benefits of Indenture....................................  15
     Section 1.12  Governing Law............................................  15
     Section 1.13  Legal Holidays...........................................  15

                                   ARTICLE II
                                 Security Forms

     Section 2.1   Forms Generally..........................................  16
     Section 2.2   Form of Trustee's Certificate of Authentication..........  16

                                  ARTICLE III
                                 The Securities

     Section 3.1   Amount Unlimited; Issuable in Series.....................  17
     Section 3.2   Denominations............................................  19
     Section 3.3   Execution, Authentication, Delivery and Dating...........  19
     Section 3.4   Temporary Securities.....................................  21
     Section 3.5   Registration, Registration of Transfer and Exchange......  21
     Section 3.6   Mutilated, Destroyed, Lost and Stolen Securities.........  23
     Section 3.7   Payment of Interest; Interest Rights Preserved...........  24
     Section 3.8   Persons Deemed Owners....................................  25
     Section 3.9   Cancellation.............................................  25
     Section 3.10  Computation of Interest..................................  26
     Section 3.11  CUSIP Numbers............................................  26
 

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NOTE: This table of contents shall not, for any purpose, be deemed to be a part
      of the Indenture.

                                       iv

 


 
                                   ARTICLE IV
                           Satisfaction and Discharge
                                                                          
     Section 4.1   Satisfaction and Discharge of Indenture..................  26
     Section 4.2   Application of Trust Money...............................  27

                                   ARTICLE V
                                   Remedies

     Section 5.1   Events of Default........................................  28
     Section 5.2   Acceleration of Maturity; Rescission and Annulment.......  30
     Section 5.3   Collection of Indebtedness and Suits for Enforcement by
                   Trustee..................................................  31
     Section 5.4   Trustee May File Proofs of Claim.........................  31
     Section 5.5   Trustee May Enforce Claims Without Possession of
                   Securities...............................................  32
     Section 5.6   Application of Money Collected...........................  32
     Section 5.7   Limitation on Suits......................................  33
     Section 5.8   Unconditional Right of Holders to Receive Principal,
                   Premium and Interest.....................................  33
     Section 5.9   Restoration of Rights and Remedies.......................  33
     Section 5.10  Rights and Remedies Cumulative...........................  34
     Section 5.11  Delay or Omission Not Waiver.............................  34
     Section 5.12  Control by Holders.......................................  34
     Section 5.13  Waiver of Past Defaults..................................  35
     Section 5.14  Undertaking for Costs....................................  35
     Section 5.15  Waiver of Stay or Extension Laws.........................  35

                                  ARTICLE VI
                                  The Trustee

     Section 6.1   Certain Duties and Responsibilities......................  36
     Section 6.2   Notice of Defaults.......................................  36
     Section 6.3   Certain Rights of Trustee................................  36
     Section 6.4   Not Responsible for Recitals or Issuance of Securities...  37
     Section 6.5   May Hold Securities......................................  38
     Section 6.6   Money Held in Trust......................................  38
     Section 6.7   Compensation and Reimbursement...........................  38
     Section 6.8   Disqualification; Conflicting Interests..................  39
 

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NOTE: This table of contents shall not, for any purpose, be deemed to be a part
      of the Indenture.

                                       v

 

 
                                                                          
     Section 6.9   Corporate Trustee Required; Eligibility..................  39
     Section 6.10  Resignation and Removal; Appointment of Successor........  39
     Section 6.11  Acceptance of Appointment by Successor...................  41
     Section 6.12  Merger, Conversion, Consolidation or Succession to
                   Business.................................................  42
     Section 6.13  Preferential Collection of Claims Against Company........  42
     Section 6.14  Appointment of Authenticating Agent......................  43
     Section 6.15  Trustee's Application for Instructions from the Company..  45

                                  ARTICLE VII
                           Holders' Lists and Reports
                             by Trustee and Company

     Section 7.1   Company to Furnish Trustee Names and Addresses of
                   Holders..................................................  45
     Section 7.2   Preservation of Information; Communications to Holders...  45
     Section 7.3   Reports by Trustee.......................................  46
     Section 7.4   Reports by Company.......................................  46

                                  ARTICLE VIII
                       Consolidation, Merger, Conveyance,
                               Transfer or Lease

     Section 8.1   Company May Consolidate, Etc. Only on Certain Terms......  47
     Section 8.2   Successor Substituted....................................  48

                                   ARTICLE IX
                            Supplemental Indentures

     Section 9.1   Supplemental Indentures Without Consent of Holders.......  48
     Section 9.2   Supplemental Indentures with Consent of Holders..........  49
     Section 9.3   Execution of Supplemental Indentures.....................  51
     Section 9.4   Effect of Supplemental Indentures........................  51
     Section 9.5   Conformity with Trust Indenture Act......................  51
     Section 9.6   Reference in Securities to Supplemental Indentures.......  51
 

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NOTE: This table of contents shall not, for any purpose, be deemed to be a part
      of the Indenture.

                                       vi

 


 
                                   ARTICLE X
                                   Covenants
                                                                          
     Section 10.1  Payment of Principal, Premium and Interest...............  52
     Section 10.2  Maintenance of Office or Agency..........................  52
     Section 10.3  Money for Securities Payments to Be Held in Trust........  52
     Section 10.4  Statement by Officers as to Default......................  53
     Section 10.5  Existence................................................  54
     Section 10.6  Restrictions on Secured Debt.............................  54
     Section 10.7  Limitation on Sales and Leasebacks.......................  55
     Section 10.8  Limitations on Restricted Payments.......................  56
     Section 10.9  Limitations on Transactions with Affiliates..............  57
     Section 10.10 Waiver of Certain Covenants..............................  58
     Section 10.11 Provision of Financial Information.......................  58
     Section 10.12 Calculation of Original Issue Discount...................  58
     Section 10.13 Appointments to Fill Vacancies in Trustee's Office.......  59

                                   ARTICLE XI
                            Redemption of Securities

     Section 11.1  Applicability of Article.................................  59
     Section 11.2  Election to Redeem; Notice to Trustee....................  59
     Section 11.3  Selection by Trustee of Securities to Be Redeemed........  59
     Section 11.4  Notice of Redemption.....................................  60
     Section 11.5  Deposit of Redemption Price..............................  61
     Section 11.6  Securities Payable on Redemption Date....................  61
     Section 11.7  Securities Redeemed in Part..............................  61

                                  ARTICLE XII
                                 Sinking Funds

     Section 12.1  Applicability of Article.................................  62
     Section 12.2  Satisfaction of Sinking Fund Payments with Securities....  62
     Section 12.3  Redemption of Securities for Sinking Fund................  62
 

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NOTE: This table of contents shall not, for any purpose, be deemed to be a part
      of the Indenture.

                                      vii

 

 

                                  ARTICLE XIII
                       Defeasance and Covenant Defeasance
                                                                          
     Section 13.1  Applicability of Article; Company's Option
                   to Effect Defeasance or Covenant Defeasance..............  63
     Section 13.2  Defeasance and Discharge.................................  63
     Section 13.3  Covenant Defeasance......................................  64
     Section 13.4  Conditions to Defeasance or Covenant Defeasance..........  64
     Section 13.5  Deposited Money and U.S. Government Obligations
                   to be Held in Trust; Other Miscellaneous Provision.......  66
     Section 13.6  Reinstatement............................................  66

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NOTE: This reconciliation and tie shall not, for any purpose, be deemed to be a
      part of the Indenture.

                                      viii


          INDENTURE, dated as of July 1, 1996 between Ryerson Tull, Inc., a
corporation duly organized and existing under the laws of the State of Delaware
(herein called the "Company"), having its principal office at 2621 West 15th
Place, Chicago, Illinois 60608, and The Bank of New York, a New York banking
corporation, as Trustee (herein called the "Trustee").

                            RECITALS OF THE COMPANY

          The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its unsecured
debentures, notes or other evidences of indebtedness (herein called the
"Securities"), to be issued in one or more series as in this Indenture provided.

          All things necessary to make this Indenture a valid agreement of the
Company, in accordance with its terms, have been done.

          NOW, THEREFORE, THIS INDENTURE WITNESSETH:

          For and in consideration of the premises and the purchase of the
Securities by the Holders thereof, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, as
follows:

                                   ARTICLE I

                        Definitions and Other Provisions
                             of General Application

Section 1.1  Definitions.

          For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

          (1) the terms defined in this Article have the meanings assigned to
     them in this Article and include the plural as well as the singular;

          (2) all other terms used herein which are defined in the Trust
     Indenture Act, either directly or by reference therein, have the meanings
     assigned to them therein;

          (3) Unless otherwise specified herein, all accounting terms used in
     this Indenture are to be interpreted, all accounting determinations under
     this Indenture are to be made, and all financial statements required
     hereunder are to be prepared (except for changes concurred in by the
     Company's independent public accountants) in accordance with generally
     accepted accounting principles applied on a basis consistent with the

                                       1


     audited consolidated financial statements of the Company as of December 31,
     1995; provided that, if the Company or any Restricted Subsidiary has
     adopted since such date or adopts at any time after the date of this
     Indenture a change in accounting principles from those used in preparing
     such consolidated financial statements that affects in any material respect
     the computation of or compliance with any of the covenants contained in
     this Indenture, then, unless this Indenture shall have been amended to
     modify the covenants in this Indenture to take account of such change in
     accounting principles, the Company shall continue to compute all financial
     restrictions and ratios contained in such covenants based on accounting
     principles in effect prior to the adoption of such change; and

          (4) the words "herein," "hereof" and "hereunder" and other words of
     similar import refer to this Indenture as a whole and not to any particular
     Article, Section or other subdivision.

          "Act," when used with respect to any Holder, has the meaning specified
in Section 1.4.

          "Affiliate" of any specified Person means any other Person, directly
or indirectly, controlling or controlled by or under direct or indirect common
control with any specified Person.  For the purposes of this definition,
"control" when used with respect to any Person means 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; and the terms
"controlling" and "controlled" have meanings correlative to the foregoing.

          "Asset Disposition" by the Company or any of its Restricted
Subsidiaries means any sale, lease, conveyance, transfer or other disposition
(including, without limitation, by way of a merger, consolidation, spin-off,
sale of Capital Stock or otherwise) of (i) the shares of Capital Stock of a
Restricted Subsidiary of the Company (other than directors' qualifying shares),
(ii) substantially all of the assets representing a division or line of the
business of the Company or any of its Restricted Subsidiaries or (iii) other
assets of the Company or any of its Restricted Subsidiaries outside of the
ordinary course of business (each referred to for the purposes of this
definition as a "disposition"), in each case by the Company or any of its
Restricted Subsidiaries (other than a disposition by such a Restricted
Subsidiary to the Company or by the Company to a Restricted Subsidiary or by a
Restricted Subsidiary to another Restricted Subsidiary).

          "Attributable Debt" means, with respect to a lease in a Sale and
Leaseback Transaction, the total net amount of rent required to be paid during
the remaining primary term of such lease, discounted at a rate per annum equal
to the interest rate implicit in such lease, calculated in accordance with
generally accepted accounting practices.  The net amount of rent required to be
paid under any such lease for any such period shall be the aggregate amount of
rent payable by the lessee with respect to such period after excluding amounts
required to be 

                                       2


paid on account of maintenance, repairs, insurance, taxes, assessments, utility,
operating and labor costs and similar charges.

          "Authenticating Agent" means any Person authorized by the Trustee
pursuant to Section 6.14 to act on behalf of the Trustee to authenticate
Securities of one or more series.

          "Board of Directors" means either the board of directors of the
Company or any duly authorized committee of that board.

          "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee.

          "Book-Entry Security" means a Security issued to the Depository or its
nominee, and registered in the name of such Depository or nominee.

          "Business Day," when used with respect to any Place of Payment, means
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

          "Capital Lease Obligations" of any Person means the obligations to pay
rent or other amounts under a lease of (or other Debt arrangements conveying the
right to use) real or personal property of such Person that are required to be
classified and accounted for as a capital lease or a liability on the face of a
balance sheet of such Person in accordance with generally accepted accounting
principles, and the amount of such obligations shall be the capitalized amount
thereof in accordance with generally accepted accounting principles and the
stated maturity thereof shall be the date of the last payment of rent or any
other amount due under such lease prior to the first date upon which such lease
may be terminated by the lessee without payment of a penalty.

          "Capital Stock" of any Person means any and all shares, interests,
participations or other equivalents (however designated) of corporate stock or
other equity participation, including partnership interests, whether general or
limited, of such Person.

          "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Securities Exchange Act of 1934, as
amended, or, if at any time after the execution of this instrument such
Commission is not existing and performing the duties now assigned to it under
the Trust Indenture Act, then the body performing such duties at such time.

                                       3


          "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

          "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its Chairman of the Board, its President or
a Vice President, and by its Treasurer, an Assistant Treasurer, its Controller,
its Secretary or an Assistant Secretary, and delivered to the Trustee.

          "Consolidated Net Income" of the Company means for any period the
consolidated net income (or loss) of the Company and its Restricted Subsidiaries
for such period determined on a consolidated basis in accordance with generally
accepted accounting principles, provided that there shall be excluded therefrom
(i) the net income (or loss) of any Person acquired by the Company or a
Restricted Subsidiary in a pooling-of-interests transaction for any period prior
to the date of such transaction, (ii) the net income (but not net loss) of any
Restricted Subsidiary which is subject to restrictions which prevent the payment
of dividends or the making of distributions to the Company to the extent of such
restrictions, (iii) the net income (or loss) of any Person that is not a
Restricted Subsidiary except to the extent of the amount of dividends or other
distributions actually paid to the Company by such Person during such period,
(iv) gains or losses on Asset Dispositions by the Company or its Restricted
Subsidiaries and (v) all extraordinary gains and extraordinary losses.

          "Consolidated Net Tangible Assets" means the aggregate amount of
assets of the Company and its Restricted Subsidiaries after deducting (i) all
current liabilities other than commercial paper, short-term bank debt and
current maturities of long-term debt and (ii) all goodwill and other
intangibles.

          "Consolidated Net Worth" means the consolidated stockholders' equity
of the Company and its Restricted Subsidiaries, less amounts attributable to
Disqualified Stock.

          "Corporate Trust Office" means the principal office of the Trustee in
New York, at which at any particular time its corporate trust business shall be
administered, which currently is located at 101 Barclay Street, 21 West, New
York, New York 10286.

          "Corporation" means a corporation, association, company, joint-stock
company or business trust.

          "Debt" means (without duplication), with respect to any Person,
whether recourse is to all or a portion of the assets of such Person and whether
or not contingent, (i) every obligation of such Person for money borrowed, (ii)
every obligation of such Person evidenced by bonds, debentures, notes or other
similar instruments, including obligations Incurred in connection with the
acquisition of property, assets or businesses, (iii) every reimbursement
obligation of such Person with respect to letters of credit, bankers'
acceptances or similar 

                                       4


facilities issued for the account of such Person, (iv) every obligation of such
Person issued or assumed as the deferred purchase price of property or services
(but excluding trade accounts payable or accrued liabilities arising in the
ordinary course of business that are not overdue by more than 90 days or that
are being contested in good faith), (v) every Capital Lease Obligation of such
Person, (vi) the maximum fixed redemption or repurchase price of Disqualified
Stock of such Person, (vii) every obligation of such Person under interest rate
swap or similar agreements, or foreign currency or commodity hedge, exchange or
similar agreements of such Person, (viii) the Attributable Debt with respect to
any Sale and Leaseback Transaction to which such Person is a party and (ix)
every obligation of the type referred to in clauses (i) through (viii) of
another Person and all dividends of another Person the payment of which, in
either case, such Person has Guaranteed or is responsible or liable, directly or
indirectly, as obligor, guarantor or otherwise.

          "Defaulted Interest" has the meaning specified in Section 3.7.

          "Depository" means, with respect to the Securities of any series
issuable or issued in whole or in part in the form of one or more Book-Entry
Securities, the Person designated as Depository for such series by the Company
pursuant to Section 3.1, initially The Depository Trust Company, its nominees
and their respective successors, which Person shall be a clearing agency
registered under the Securities Exchange Act of 1934, as amended.

          "Disqualified Stock" means, with respect to Securities of any series,
any Capital Stock that, by its terms (or by the terms of any security into which
it is convertible or for which it is exchangeable), or upon the happening of any
event, matures or is mandatorily redeemable in cash, pursuant to a sinking fund
obligation or otherwise, or is redeemable in cash at the option of the holder
thereof, in whole or in part, on or prior to the date on which the Securities of
such series mature; provided, however, that Disqualified Stock shall not include
any Capital Stock held by or issued in connection with an employee benefit plan
or program in which employees or directors of the Company or any Subsidiary of
the Company participate.

          "Event of Default" has the meaning specified in Section 5.1.

          "Funded Debt" means (i) all Debt having a maturity of more than 12
months from the date as of which the determination is made or having a maturity
of 12 months or less but by its terms being renewable or extendible beyond 12
months from such date at the option of any obligor thereon and (ii) Capital
Lease Obligations payable more than 12 months from such date (such Capital Lease
Obligations to be included as Funded Debt at the amount so capitalized at the
date of such computation and to be included for the purposes of the definition
of Consolidated Net Tangible Assets both as an asset and as Funded Debt at the
amount so capitalized).

          "Guarantee" by any Person means any obligation, contingent or
otherwise, of such Person guaranteeing any Debt of any other Person (the
"primary obligor") in any manner, 

                                       5

 
whether directly or indirectly, and including, without limitation, any
obligation of such Person, directly or indirectly (i) to purchase or pay (or
advance or supply funds for the purchase or payment of) such Debt or to purchase
(or to advance or supply funds for the purchase of) any interest in or security
for the payment of such Debt, (ii) to purchase property, securities or services
for the purpose of assuring the holder of such Debt of the payment of such Debt
or (iii) to maintain working capital, equity capital or other financial
statement condition or liquidity of the primary obligor so as to enable the
primary obligor to pay such Debt (and "Guaranteed" and "Guaranteeing" shall have
meanings correlative to the foregoing); provided, however, that a Guarantee by
any Person shall not include endorsements by such Person for collection or
deposit, in either case, in the ordinary course of business; and provided,
further, that the term "Guarantee" shall not include contracts made in the
ordinary course of business of the Company and its Restricted Subsidiaries for
the purchase of utilities, services and raw materials that require payment to be
made to the provider of utilities, services or raw materials regardless of
whether delivery is ever made of such utilities, services or raw materials so
long as the quantities of utilities, services or raw materials purchased under
each such contract do not exceed the Company's or its contracting Restricted
Subsidiary's reasonably anticipated consumption thereof on the date of the
contract. The amount of a Guarantee shall be equal to the amount of the
obligation covered thereby.

          "Holder" means a Person in whose name a Security is registered in the
Security Register.

          "Incur" means, with respect to any Debt or other obligation of any
Person, to create, issue, incur (by conversion, exchange or otherwise), assume,
Guarantee or otherwise become liable in respect of such Debt or other obligation
or the recording, as required pursuant to generally accepted accounting
principles or otherwise, of any such Debt or other obligation on the balance
sheet of any such Person (and "Incurrence," "Incurred," "Incurrable" and
"Incurring" shall have meanings correlative to the foregoing); provided,
however, that a change in generally accepted accounting principles that results
in an obligation of such Person that exists at such time becoming Debt shall not
be deemed an Incurrence of such Debt, and "Incur" means with respect to any
Lien, to create, incur or assume such Lien on any asset or property (and
"Incurrence," "Incurred," "Incurrable" and "Incurring" shall have meanings
correlative to the foregoing).

          "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
including, for all purposes of this instrument, and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively.  The term "Indenture" shall also include the terms of particular
series of Securities established as contemplated by Section 3.1.

                                       6


          "Interest," when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity.

          "Interest Payment Date," when used with respect to any Security, means
the Stated Maturity of an installment of interest on such Security.

          "Investment Grade" means Baa3 or better in the case of a rating from
Moody's and BBB- or better in the case of a rating from S&P.

          "Lien" means, with respect to any property or assets, any mortgage or
deed of trust, pledge, hypothecation, assignment, deposit arrangement, security
interest, lien, charge, easement (other than any easement not materially
impairing usefulness or marketability), encumbrance, preference, priority or
other security agreement, or any equivalent of any of the foregoing under the
laws of any applicable jurisdiction, on or with respect to such property or
assets (including, without limitation, any conditional sale or other title
retention agreement having substantially the same economic effect as any of the
foregoing); provided, however, that Lien shall not include a Permitted Lien.

          "Maturity," when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes due
and payable as therein or herein provided, whether at the Stated Maturity or by
declaration of acceleration, call for redemption or otherwise.

          "Moody's" mean Moody's Investors Service, Inc. or any successor
thereto.

          "Officers' Certificate" means a certificate signed on behalf of the
Company by its Chairman of the Board, its President or a Vice President, and by
its Treasurer, an Assistant Treasurer, its Controller, its Secretary or an
Assistant Secretary, and delivered to the Trustee.  One of the officers signing
an Officers' Certificate given pursuant to Section 10.4 shall be the principal
executive, financial or accounting officer of the Company.

          "Opinion of Counsel" means a written opinion of counsel, who may be an
employee of the Company, and who shall be reasonably acceptable to the Trustee.

          "Original Issue Discount Security" means any Security which provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the Maturity thereof pursuant to Section 5.2.

          "Outstanding," when used with respect to Securities, means, as of the
date of determination, all Securities theretofore authenticated and delivered
under this Indenture, except:

          (i) Securities theretofore cancelled by the Trustee or delivered to
     the Trustee for cancellation;

                                       7


          (ii) Securities for whose payment or redemption money in the necessary
     amount has been theretofore deposited with the Trustee or any Paying Agent
     (other than the Company) in trust or set aside and segregated in trust by
     the Company (if the Company shall act as its own Paying Agent) for the
     Holders of such Securities; provided, however, that, if such Securities are
     to be redeemed, notice of such redemption has been duly given pursuant to
     this Indenture or provision therefor satisfactory to the Trustee has been
     made;

          (iii) Securities as to which defeasance has been effected pursuant to
     Section 13.2; and

          (iv) Securities which have been paid pursuant to Section 3.6 or in
     exchange for or in lieu of which other Securities have been authenticated
     and delivered pursuant to this Indenture, other than any such Securities in
     respect of which there shall have been presented to the Trustee proof
     satisfactory to it that such Securities are held by a bona fide purchaser
     in whose hands such Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given, made or taken any
request, demand, authorization, direction, notice, consent, waiver or other
action hereunder as of any date, (i) the principal amount of an Original Issue
Discount Security that shall be deemed to be Outstanding shall be the amount of
the principal thereof that would be due and payable as of the date of such
determination upon acceleration of the Maturity thereof pursuant to Section 5.2,
(ii) if, as of such date, the principal amount payable at the Stated Maturity of
a Security is not determinable, the principal amount of such Security which
shall be deemed to be Outstanding shall be the amount as specified or determined
as contemplated by Section 3.1, (iii) the principal amount of a Security
denominated in one or more foreign currencies or currency units shall be the
U.S. dollar equivalent, determined in the manner provided as contemplated by
Section 3.1 on the date of original issuance of such Security, of the principal
amount (or, in the case of a Security described in clause (i) or (ii) above, the
U.S. dollar equivalent on the date of original issuance of such Security of the
amount determined as provided in (i) or (ii) above) of such Security and (iv)
Securities owned by the Company or any other obligor upon the Securities or any
Affiliate of the Company or of such other obligor shall be disregarded and
deemed not to be Outstanding, except that, in determining whether the Trustee
shall be protected in relying upon any such request, demand, authorization,
direction, notice, consent, waiver or other action, only Securities which the
Trustee actually knows to be so owned shall be so disregarded.  Securities so
owned which have been pledged in good faith may be regarded as Outstanding if
the pledgee establishes to the satisfaction of the Trustee the pledgee's right
so to act with respect to such Securities and that the pledgee is not the
Company or any other obligor upon the Securities or any Affiliate of the Company
or of such other obligor.

          "Paying Agent" means any Person authorized by the Company to pay the
principal of or any premium or interest on any Securities on behalf of the
Company.

                                       8

 
          "Permitted Liens" means (i) deposits, liens or pledges of personal
property to enable the Company or a Restricted Subsidiary to exercise any
privilege or license, or to secure payments of worker's compensation,
unemployment insurance or social security obligations, or to secure the
performance of contracts or leases to which the Company or a Restricted
Subsidiary is a party, or to secure public or statutory obligations of the
Company or a Restricted Subsidiary, or other similar deposits, liens, or pledges
of personal property made in the ordinary course of business, (ii) mechanics',
workmen's, repairmen's or carriers' liens, or other similar liens arising in the
ordinary course of business, or deposits, liens or pledges of personal property
to obtain the release of any such liens, (iii) liens for taxes, assessments and
other governmental charges not delinquent or the payment of which is being
contested by the Company or a Restricted Subsidiary in good faith and (iv)
bankers' liens and rights of setoff arising in the ordinary course of business
of the Company or any Restricted Subsidiary under common law or by statute.

          "Person" means any individual, corporation, partnership, limited
liability company, joint venture, trust, unincorporated organization or
government or any agency or political subdivision thereof.

          "Place of Payment," when used with respect to the Securities of any
series, means the place or places where the principal of and any premium and
interest on the Securities of that series are payable as specified as
contemplated by Section 3.1.

          "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by such
particular Security; and, for the purposes of this definition, any Security
authenticated and delivered under Section 3.6 in exchange for or in lieu of a
mutilated, destroyed, lost or stolen Security shall be deemed to evidence the
same debt as the mutilated, destroyed, lost or stolen Security.

          "Principal Property" means any facility owned by the Company or any
Subsidiary the gross book value of which (including related land, improvements,
machinery and equipment so owned, without deduction of any depreciation
reserves) on the date as of which the determination is being made exceeds 2% of
Consolidated Net Tangible Assets.

          "Redemption Date," when used with respect to any Security to be
redeemed, means the date fixed for such redemption by or pursuant to this
Indenture.

          "Redemption Price," when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

          "Regular Record Date" for the interest payable on any Interest Payment
Date on the Securities of any series means the date specified for that purpose
as contemplated by Section 3.1.

                                       9

 
          "Restricted Payment" has the meaning specified in Section 10.8.

          "Restricted Subsidiary" means any Subsidiary of the Company which owns
a Principal Property and any other Subsidiary designated as a Restricted
Subsidiary by the Board of Directors.

          "S&P" means Standard & Poor's Ratings Services, a division of The
McGraw Hill Companies, Inc., or any successor thereto.

          "Sale and Leaseback Transaction" means an arrangement with any lender
or investor or to which any lender or investor is a party providing for the
leasing by such Person of any property or asset of such Person that has been or
is being sold or transferred by such Person more than 180 days after the
acquisition thereof or the completion of construction or commencement of
operation thereof to such lender or investor or to any person to whom funds have
been or are to be advanced by such lender or investor on the security of such
property or asset. The stated maturity of such arrangement shall be the date of
the last payment of rent or any other amount due under such arrangement prior to
the first date on which such arrangement may be terminated by the lessee without
payment of a penalty.

          "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and delivered
under this Indenture.

          "Security Register" and "Security Registrar" have the respective
meanings specified in Section 3.5.

          "Special Record Date" for the payment of any Defaulted Interest means
a date fixed by the Trustee pursuant to Section 3.7.

          "Stated Maturity," when used with respect to any Security or any
installment of principal thereof or interest thereon, means the date specified
in such Security as the fixed date on which the principal of such Security or
such installment of principal or interest is due and payable.

          "Subsidiary" of any Person means (i) a corporation more than 50% of
the outstanding Voting Stock of which is owned, directly or indirectly, by such
Person or by one or more other Subsidiaries of such Person or by such Person and
one or more Subsidiaries thereof or (ii) any other Person (other than a
corporation) in which such Person, or one or more other Subsidiaries of such
Person or such Person and one or more other Subsidiaries thereof, directly or
indirectly, has at least a majority ownership and power to direct the policies,
management and affairs thereof.
 
          "Trust Indenture Act" means the Trust Indenture Act of 1939 as in
force at the date as of which this instrument was executed; provided, however,
that if the Trust Indenture 

                                       10

 
Act of 1939 is amended after such date, "Trust Indenture Act" means, to the
extent required by any such amendment, the Trust Indenture Act of 1939 as so
amended.

          "Trustee" means the Person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each Person who is then a Trustee hereunder, and
if at any time there is more than one such Person, "Trustee" as used with
respect to the Securities of any series shall mean the Trustee with respect to
Securities of that series.

          "U.S. Government Obligation" means (x) any security that is (i) a
direct obligation of the United States of America for the payment of which the
full faith and credit of the United States of America is pledged or (ii) an
obligation of a Person controlled or supervised by and acting as an agency or
instrumentality of the United States of America the payment of which is
unconditionally guaranteed as a full faith and credit obligation of the United
States of America, that, in either case (i) or (ii), is not callable or
redeemable at the option of the issuer thereof, and (y) any depositary receipt
issued by a bank (as defined in Section 3(a)(2) of the Securities Act) as
custodian with respect to any U.S. Government Obligation that is specified in
clause (x) above and held by such bank for the account of the holder of such
depositary receipt, or for the account of the holder of such depositary receipt,
or with respect to any specific payment of principal of or interest on any U.S.
Government Obligation that is so specified and held, provided that (except as
required by law) such custodian is not authorized to make any deduction from the
amount payable to the holder of such depositary receipt from any amount received
by the custodian in respect of the U.S. Government Obligation or the specific
payment of principal or interest evidenced by such depositary receipt.

          "Vice President," when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president."

          "Voting Stock" means Capital Stock which ordinarily has voting power
for the election of directors (or persons performing similar functions), whether
at all times or only so long as no senior class of securities has such voting
power by reason of any contingency.

          "Wholly-Owned Restricted Subsidiary" of any Person means a Restricted
Subsidiary of such Person all of the outstanding Capital Stock of which (other
than directors' qualifying shares) shall at the time be owned by such Person or
by one or more Wholly-Owned Restricted Subsidiaries of such Person or by such
Person and one or more Wholly-Owned Restricted Subsidiaries of such Person.

                                       11

 
Section 1.2  Compliance Certificates and Opinions.

          Upon any application or request by the Company to the Trustee to take
any action under any provision of this Indenture, the Company shall furnish to
the Trustee such certificates and opinions as may be required under the Trust
Indenture Act.  Each such certificate or opinion shall be given in the form of
an Officers' Certificate, if to be given by an officer of the Company, or an
Opinion of Counsel, if to be given by counsel, and shall comply with the
requirements of the Trust Indenture Act and any other requirements set forth in
this Indenture.  In the case of any such application or request as to which the
furnishing of such documents is specifically required by any provision of this
Indenture relating to such particular application or request, however, no
additional certificate or opinion need be furnished.

          Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include:

          (1)  a statement that each individual signing such certificate or
     opinion has read such covenant or condition and the definitions herein
     relating thereto;

          (2)  a brief statement as to the nature and scope of the examination
     or investigation upon which the statements or opinions contained in such
     certificate or opinion are based;

          (3)  a statement that, in the opinion of each such individual, he has
     made such examination or investigation as is necessary to enable him to
     express an informed opinion as to whether or not such covenant or condition
     has been complied with; and

          (4)  a statement as to whether, in the opinion of each such
     individual, such condition or covenant has been complied with.

Section 1.3  Form of Documents Delivered to Trustee.

          In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

          Any certificate or opinion of an officer of the Company may be based,
insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such certificate or Opinion of Counsel may be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Company stating that the
information with respect to such factual matters is in

                                      12


the possession of the Company, unless such counsel knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

          Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

Section 1.4  Acts of Holders; Record Dates.

          (a)  Any request, demand, authorization, direction, notice, consent,
waiver or other action provided or permitted by this Indenture to be given or
taken by Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agent duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required, to the Company. Such
instrument or instruments (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Holders signing
such instrument or instruments. Proof of execution of any such instrument or of
a writing appointing any such agent shall be sufficient for any purpose of this
Indenture and (subject to Section 6.1) conclusive in favor of the Trustee and
the Company, if made in the manner provided in this Section.

          (b)  The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof. Where such
execution is by a signer acting in a capacity other than his individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his authority. The fact and date of the execution of any such instrument or
writing, or the authority of the Person executing the same, may also be proved
in any other manner which the Trustee deems sufficient.

          (c)  The Company may, in the circumstances permitted by the Trust
Indenture Act, fix any day as the record date for the purpose of determining the
Holders of Securities of any series entitled to give, make or take any request,
demand, authorization, direction, notice, consent, waiver or other action, or to
vote on any action, authorized or permitted to be given or taken by Holders of
Securities of such series. If not set by the Company prior to the first
solicitation of a Holder of Securities of such series made by any Person in
respect of any such action, or, in the case of any such vote, prior to such
vote, the record date for any such action or vote shall be the 30th day (or, if
later, the date of the most recent list of Holders required to be provided
pursuant to Section 7.1) prior to such first solicitation or vote, as the case
may be. With regard to any record date for action to be taken by the Holders of
one or more series of Securities, only the Holders of Securities of such series
on such date (or their duly designated proxies) shall be entitled to give or
take, or vote on, the relevant action.

                                      13

 
          (d)  The ownership of Securities shall be proved by the Security
Register.

          (e)  Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future Holder
of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee or the
Company in reliance thereon, whether or not notation of such action is made upon
such Security.

Section 1.5  Notices, Etc. to Trustee and Company.

          Any request, demand, authorization, direction, notice, consent, waiver
or Act of Holders or other document provided or permitted by this Indenture to
be made upon, given or furnished to, or filed with,

          (1)  the Trustee by any Holder or by the Company shall be sufficient
for every purpose hereunder if made, given, furnished or filed in writing to or
with the Trustee at its Corporate Trust Office, Attention: Corporate Trust
Administration, or

          (2)  the Company by the Trustee or by any Holder shall be sufficient
for every purpose hereunder (unless otherwise herein expressly provided) if in
writing and mailed, first-class postage prepaid, to the Company addressed to it
at the address of its principal office specified in the first paragraph of this
instrument, Attention: Corporate Secretary or at any other address previously
furnished in writing to the Trustee by the Company.

Section 1.6  Notice to Holders; Waiver.

          Where this Indenture provides for notice to Holders of any event, such
notice shall be sufficiently given (unless otherwise herein expressly provided)
if in writing and mailed, first-class postage prepaid, to each Holder affected
by such event, at his address as it appears in the Security Register, not later
than the latest date (if any), and not earlier than the earliest date (if any),
prescribed for the giving of such notice. In any case where notice to Holders is
given by mail, neither the failure to mail such notice, nor any defect in any
notice so mailed, to any particular Holder shall affect the sufficiency of such
notice with respect to other Holders. Where this Indenture provides for notice
in any manner, such notice may be waived in writing by the Person entitled to
receive such notice, either before or after the event, and such waiver shall be
the equivalent of such notice. Waivers of notice by Holders shall be filed with
the Trustee, but such filing shall not be a condition precedent to the validity
of any action taken in reliance upon such waiver.

          In case by reason of the suspension of regular mail service or by
reason of any other cause it shall be impracticable to give such notice by mail,
then such notification as shall

                                      14

 
be made as shall be satisfactory to the Trustee shall constitute a sufficient
notification for every purpose hereunder.

Section 1.7  Conflict with Trust Indenture Act.

          If any provision hereof limits, qualifies or conflicts with a
provision of the Trust Indenture Act that is required under such Act to be a
part of and govern this Indenture, the latter provision shall control. If any
provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act that may be so modified or excluded, the latter provision shall be
deemed to apply to this Indenture as so modified or to be excluded, as the case
may be.

Section 1.8  Effect of Headings and Table of Contents.

          The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

Section 1.9  Successors and Assigns.

          All covenants and agreements in this Indenture by the Company shall
bind its successors and assigns, whether so expressed or not.

Section 1.10  Separability Clause.

          In case any provision in this Indenture or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

Section 1.11  Benefits of Indenture.

          Nothing in this Indenture or in the Securities, express or implied,
shall give to any Person, other than the parties hereto and their successors
hereunder and the Holders, any benefit or any legal or equitable right, remedy
or claim under this Indenture.

Section 1.12  Governing Law.

          This Indenture and the Securities shall be governed by and construed
in accordance with the laws of the State of New York without giving effect to
the conflict of laws provisions thereof.

Section 1.13  Legal Holidays.

          In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (notwithstanding any

                                      15

 
other provision of this Indenture or of the Securities (other than a provision
of the Securities of any series which specifically states that such provision
shall apply in lieu of this Section)) payment of interest or principal (and
premium, if any) need not be made at such Place of Payment on such date, but may
be made on the next succeeding Business Day at such Place of Payment with the
same force and effect as if made on the Interest Payment Date or Redemption
Date, or at the Stated Maturity; provided, however, that no interest shall
accrue for the period from and after such Interest Payment Date, Redemption Date
or Stated Maturity, as the case may be.

                                  ARTICLE II

                                Security Forms

Section 2.1  Forms Generally.

          The Securities of each series shall be substantially in the form as
shall be established by or pursuant to a Board Resolution or in one or more
indentures supplemental hereto, in each case with such appropriate insertions,
omissions, substitutions and other variations as are required or permitted by
this Indenture, and may have such letters, numbers or other marks of
identification and such legends or endorsements placed thereon as may be
required to comply with the rules of any securities exchange or Depository
therefor or as may, consistently herewith, be determined by the officers
executing such Securities, as evidenced by their execution of the Securities. If
the form of Securities of any series is established by action taken pursuant to
a Board Resolution, a copy of an appropriate record of such action shall be
certified by the Secretary or an Assistant Secretary of the Company and
delivered to the Trustee at or prior to the delivery of the Company Order
contemplated by Section 3.3 for the authentication and delivery of such
Securities.

          The definitive Securities shall be printed, lithographed or engraved
on steel engraved borders or may be produced in any other manner, all as
determined by the officers executing such Securities, as evidenced by their
execution of such Securities.

Section 2.2  Form of Trustee's Certificate of Authentication.

          The Trustee's certificates of authentication shall be in substantially
the following form:

          Dated:__________

          This is one of the Securities of the series designated therein
referred to in the within-mentioned Indenture.

                                             The Bank of New York,
                                                                      As Trustee
                                             By:________________________________
                                                    Authorized Signatory

                                       16

 
                                  ARTICLE III

                                The Securities

Section 3.1  Amount Unlimited; Issuable in Series.

          The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is unlimited.

          The Securities may be issued in one or more series. There shall be
established in or pursuant to a Board Resolution and, subject to Section 3.3,
set forth, or determined in the manner provided, in an Officers' Certificate, or
established in one or more indentures supplemental hereto, prior to the issuance
of Securities of any series:

          (1)  the title of the Securities of the series (which shall
distinguish the Securities of the series from Securities of any other series);

          (2)  any limit upon the aggregate principal amount of the Securities
of the series which may be authenticated and delivered under this Indenture
(except for Securities authenticated and delivered upon registration of transfer
of, or in exchange for, or in lieu of, other Securities of the series pursuant
to Section 3.4, 3.5, 3.6, 9.6 or 11.7 and except for any Securities which,
pursuant to Section 3.3, are deemed never to have been authenticated and
delivered hereunder);

          (3)  the Person to whom any interest on a Security of the series shall
be payable, if other than the Person in whose name that Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date for such interest;

          (4)  the date or dates on which the principal of the Securities of the
series is payable;

          (5)  the rate or rates at which the Securities of the series shall
bear interest, if any, or the method of calculating such rate or rates of
interest, the date or dates from which such interest shall accrue, the Interest
Payment Dates on which any such interest shall be payable and the Regular Record
Date for any interest payable on any Interest Payment Date;

          (6)  the place or places where the principal of and any premium and
interest on Securities of the series shall be payable;

          (7)  the period or periods within which, the price or prices at which
and the terms and conditions upon which Securities of the series may be
redeemed, in whole or in part,

                                       17

 
at the option of the Company and, if other than by a Board Resolution, the
manner in which any election by the Company to redeem the Securities shall be
evidenced;

          (8)  the obligation, if any, of the Company to redeem, purchase or
repay Securities of the series pursuant to any sinking fund or analogous
provisions or at the option of a Holder thereof and the period or periods within
which, the price or prices at which and the terms and conditions upon which
Securities of the series shall be redeemed, purchased or repaid, in whole or in
part, pursuant to such obligation;

          (9)  if other than denominations of $1,000 or any integral multiple
thereof, the denominations in which Securities of the series shall be issuable;

          (10) the currency, currencies or currency units in which payment of
the principal of and any premium and interest on any Securities of the series
shall be payable if other than the currency of the United States of America and
the manner of determining the equivalent thereof in the currency of the United
States of America for purposes of the definition of "Outstanding" in Section
1.1;

          (11) if the amount of payments of principal of or any premium or
interest on any Securities of the series may be determined with reference to an
index or formula, the manner in which such amounts shall be determined;

          (12) if the principal of or any premium or interest on any Securities
of the series is to be payable, at the election of the Company or a Holder
thereof, in one or more currencies or currency units other than that or those in
which the Securities are stated to be payable, the currency, currencies or
currency units in which payment of the principal of and any premium and interest
on Securities of such series as to which such election is made shall be payable,
and the periods within which and the terms and conditions upon which such
election is to be made;

          (13) the application, if any, of Section 13.2 or 13.3 or both to the
Securities of any series and, if other than by a Board Resolution, the manner in
which any election by the Company to defease such Securities shall be evidenced;

          (14) if the principal amount payable at the Stated Maturity of any
Securities of the series will not be determinable as of any one or more dates
prior to the Stated Maturity, the amount which shall be deemed to be the
principal amount of such Securities as of any such date for any purpose
thereunder or hereunder, including the principal amount thereof which shall be
due and payable upon any Maturity other than the Stated Maturity or which shall
be deemed to be Outstanding as of any date prior to the Stated Maturity (or, in
any such case, the manner in which such amount deemed to be the principal amount
shall be determined);

                                       18

 
          (15)  whether the Securities of the series shall be issued in whole or
in part in the form of one or more Book-Entry Securities and, in such case, the
Depository with respect to such Book-Entry Security or Securities and the
circumstances under which any Book-Entry Security may be registered for transfer
or exchange, or authenticated and delivered, in the name of a Person other than
such Depository or its nominee, if other than as set forth in Section 3.5;

          (16)  if other than the principal amount thereof, the portion of the
principal amount of Securities of the series which shall be payable upon
declaration of acceleration of the Maturity thereof pursuant to Section 5.2;

          (17)  any deletions from, modifications of or additions to the Events
of Default set forth in Section 5.1 or covenants of the Company set forth in
Article X pertaining to the Securities of the series and any change in the right
of the Trustee or the requisite Holders of such Securities to declare the
principal amount thereof due and payable pursuant to Section 5.2; and

          (18)  any other terms of the series (which terms shall not be
inconsistent with the provisions of this Indenture, except as permitted by
Section 9.1(5)).

          All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to the Board Resolution referred to above and (subject to Section 3.3) set
forth, or determined in the manner provided, in the Officers' Certificate
referred to above or in any such indenture supplemental hereto.

          If any of the terms of the series are established by action taken
pursuant to a Board Resolution, a copy of an appropriate record of such action
shall be certified by the Secretary or an Assistant Secretary of the Company and
delivered to the Trustee at or prior to the delivery of the Officers'
Certificate setting forth the terms of the series.

Section 3.2  Denominations.

          The Securities of each series shall be issuable in registered form
without coupons in such denominations as shall be specified as contemplated by
Section 3.1. In the absence of any such provisions with respect to the
Securities of any series, the Securities of such series shall be issuable in
denominations of $1,000 and any integral multiple thereof.

Section 3.3  Execution, Authentication, Delivery and Dating.

          The Securities shall be executed on behalf of the Company by its
Chairman of the Board, its President or one of its Vice Presidents, under its
corporate seal reproduced thereon attested by its Secretary or one of its
Assistant Secretaries.  The signature of any of these officers on the Securities
may be manual or facsimile.

                                      19

 
          Securities bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Securities or did not
hold such offices at the date of such Securities.

          At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with the Company Order shall authenticate and make available for delivery such
Securities.  If the form or terms of the Securities of the series have been
established in or pursuant to one or more Board Resolutions as permitted by
Sections 2.1 and 3.1, in authenticating such Securities, and accepting the
additional responsibilities under this Indenture in relation to such Securities,
the Trustee shall be entitled to receive, and (subject to Section 6.1) shall be
fully protected in relying upon, an Opinion of Counsel stating:

          (a)  if the form of such Securities has been established by or
pursuant to Board Resolution as permitted by Section 2.1, that such form has
been established in conformity with the provisions of this Indenture;

          (b)  if the terms of such Securities have been established by or
pursuant to Board Resolution as permitted by Section 3.1, that such terms have
been established in conformity with the provisions of this Indenture;

          (c)  that such Securities, when authenticated and delivered by the
Trustee and issued by the Company in the manner and subject to any conditions
specified in such Opinion of Counsel, will constitute valid and legally binding
obligations of the Company enforceable in accordance with their terms, subject
to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors' rights
and to general equity principles; and

          (d)  that all laws and requirements in respect of the execution and
delivery by the Company of such Securities have been complied with.

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

          Notwithstanding the provisions of Section 3.1 and of the preceding
paragraph, if all Securities of a series are not to be originally issued at one
time, it shall not be necessary to deliver the Officers' Certificate otherwise
required pursuant to Section 3.1 or the Company Order and Opinion of Counsel
otherwise required pursuant to such preceding paragraph at or prior to the time
of authentication of each Security of such series if such documents are
delivered

                                      20

 
at or prior to the authentication upon original issuance of the first Security
of such series to be issued.

          Each Security shall be dated the date of its authentication.

          No Security shall be entitled to any benefit under this Indenture or
be valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein
executed by the Trustee by manual signature, and such certificate upon any
Security shall be conclusive evidence, and the only evidence, that such Security
has been duly authenticated and made available for delivery hereunder.
Notwithstanding the foregoing, if any Security shall have been authenticated and
made available for delivery hereunder but never issued and sold by the Company,
and the Company shall deliver such Security to the Trustee for cancellation as
provided in Section 3.9, for all purposes of this Indenture such Security shall
be deemed never to have been authenticated and made available for delivery
hereunder and shall never be entitled to the benefits of this Indenture.

Section 3.4  Temporary Securities.

          Pending the preparation of definitive Securities of any series, the
Company may execute, and upon Company Order the Trustee shall authenticate and
made available for delivery, temporary Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any authorized
denomination, substantially of the tenor of the definitive Securities in lieu of
which they are issued and with such appropriate insertions, omissions,
substitutions and other variations as the officers executing such Securities may
determine, as evidenced by their execution of such Securities.

          If temporary Securities of any series are issued, the Company will
cause definitive Securities of that series to be prepared without unreasonable
delay.  After the preparation of definitive Securities of such series, the
temporary Securities of such series shall be exchangeable for definitive
Securities of such series upon surrender of the temporary Securities of such
series at the office or agency of the Company in a Place of Payment for that
series, without charge to the Holder.  Upon surrender for cancellation of any
one or more temporary Securities of any series the Company shall execute and the
Trustee shall authenticate and make available for delivery in exchange therefor
one or more definitive Securities of the same series, of any authorized
denominations and of a like aggregate principal amount and tenor.  Until so
exchanged the temporary Securities of any series shall in all respects be
entitled to the same benefits under this Indenture as definitive Securities of
such series and tenor.

Section 3.5  Registration, Registration of Transfer and Exchange.

          The Company shall cause to be kept at the Corporate Trust Office of
the Trustee a register (the register maintained in such office and in any other
office or agency of the Company in a Place of Payment being herein sometimes
collectively referred to as the "Security 

                                      21

 
Register") in which, subject to such reasonable regulations as it may prescribe,
the Company shall provide for the registration of Securities and of transfers of
Securities. The Trustee is hereby appointed "Security Registrar" for the purpose
of registering Securities and transfers of Securities as herein provided.

          Upon surrender for registration of transfer of any Security of any
series at the office or agency in a Place of Payment for that series as
designated pursuant to Section 10.2, the Company shall execute, and the Trustee
shall authenticate and make available for delivery, in the name of the
designated transferee or transferees, one or more new Securities of the same
series, of any authorized denominations and of a like aggregate principal amount
and tenor.

          At the option of the Holder, Securities of any series may be exchanged
for other Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor, upon surrender of the Securities to
be exchanged at such office or agency.  Whenever any Securities are so
surrendered for exchange, the Company shall execute, and the Trustee shall
authenticate and make available for delivery, the Securities which the Holder
making the exchange is entitled to receive.

          All Securities issued upon any registration of transfer or exchange of
Securities shall be the valid obligations of the Company, evidencing the same
debt, and entitled to the same benefits under this Indenture, as the Securities
surrendered upon such registration of transfer or exchange.

          Every Security presented or surrendered for registration of transfer
or for exchange shall (if so required by the Company or the Trustee) be duly
endorsed, or be accompanied by a written instrument of transfer in form
satisfactory to the Company and the Security Registrar duly executed, by the
Holder thereof or his attorney duly authorized in writing.

          No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
with any registration of transfer or exchange of Securities, other than
exchanges pursuant to Section 3.4, 9.6 or 11.7 not involving any transfer.

          The Company shall not be required (i) to issue, register the transfer
of or exchange Securities of any series during a period beginning at the opening
of business 15 days before the day of the mailing of a notice of redemption of
Securities of that series selected for redemption under Section 11.3 and ending
at the close of business on the day of such mailing or (ii) to register the
transfer of or exchange any Security so selected for redemption in whole or in
part, except the unredeemed portion of any Security being redeemed in part.

                                       22

 
          Notwithstanding the foregoing, any Book-Entry Security shall be
exchangeable in whole or in part pursuant to this Section 3.5 for Securities
registered in the name of Persons other than the Depository for such Security or
its nominee only if (i) such Depository notifies the Company that it is
unwilling or unable to continue as Depository for such Book-Entry Security or if
at any time such Depository ceases to be a clearing agency registered under the
Securities Exchange Act of 1934, as amended, (ii) the Company executes and
delivers to the Trustee a Company Order that such Book-Entry Security shall be
so exchangeable, (iii) there shall have occurred and be continuing an Event of
Default with respect to the Securities or (iv) there shall exist such
circumstances, if any, in addition to or in lieu of the foregoing as have been
specified for this purpose as contemplated by Section 3.1. Any Book-Entry
Security that is exchangeable pursuant to the preceding sentence shall be
exchangeable for Securities registered in such names as such Depository shall
direct.

          Notwithstanding any other provision in this Indenture, a Book-Entry
Security may not be transferred except as a whole by the Depository with respect
to such Book-Entry Security to a nominee of such Depository or by a nominee of
such Depository to such Depository or another nominee of such Depository.

          Every Security authenticated and delivered upon registration of
transfer of, or in exchange for or in lieu of, a Book-entry Security or any
portion thereof, whether pursuant to this Section, Section 3.4, 3.6, 9.6 or 11.7
or otherwise, shall be authenticated and delivered in the form of, and shall be,
a Book-entry Security, unless such Security is registered in the name of a
Person other than the Depositary for such Book-entry Security or a nominee
thereof.

Section 3.6  Mutilated, Destroyed, Lost and Stolen Securities.

          If any mutilated Security is surrendered to the Trustee, the Company
shall execute and the Trustee shall authenticate and make available for delivery
in exchange therefor a new Security of the same series and of like tenor and
principal amount and bearing a number not contemporaneously outstanding.

          If there shall be delivered to the Company and the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any Security
and (ii) such security or indemnity as may be required by them to save each of
them and any agent of either of them harmless, then, in the absence of notice to
the Company or the Trustee that such Security has been acquired by a bona fide
purchaser, the Company shall execute and the Trustee shall authenticate and make
available for delivery, in lieu of any such destroyed, lost or stolen Security,
a new Security of the same series and of like tenor and principal amount and
bearing a number not contemporaneously outstanding.

          In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

                                      23

 
          Upon the issuance of any new Security under this Section, the Company
may require the payment by the Holder of such mutilated, destroyed, lost or
stolen Security of a sum sufficient to cover any tax or other governmental
charge that may be imposed in relation thereto and any other expenses (including
the fees and expenses of the Trustee) connected therewith.

          Every new Security of any series issued pursuant to this Section in
lieu of any destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company, whether or not the destroyed,
lost or stolen Security shall be at any time enforceable by anyone, and shall be
entitled to all the benefits of this Indenture equally and proportionately with
any and all other Securities of that series duly issued hereunder.

          The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities.

Section 3.7  Payment of Interest; Interest Rights Preserved.

          Except as otherwise provided as contemplated by Section 3.1 with
respect to any series of Securities, interest on any Security which is payable,
and is punctually paid or duly provided for, on any Interest Payment Date shall
be paid to the Person in whose name that Security (or one or more Predecessor
Securities) is registered at the close of business on the Regular Record Date
for such interest.

          Any interest on any Security of any series which is payable, but is
not punctually paid or duly provided for, on any Interest Payment Date (herein
called "Defaulted Interest") shall forthwith cease to be payable to the Holder
on the relevant Regular Record Date by virtue of having been such Holder, and
such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in Clause (1) or (2) below:

          (1)  The Company may elect to make payment of any Defaulted Interest
     to the Persons in whose names the Securities of such series (or their
     respective Predecessor Securities) are registered at the close of business
     on a Special Record Date for the payment of such Defaulted Interest, which
     shall be fixed in the following manner. The Company shall notify the
     Trustee in writing of the amount of Defaulted Interest proposed to be paid
     on each Security of such series and the date of the proposed payment, and
     at the same time the Company shall irrevocably deposit with the Trustee an
     amount of money equal to the aggregate amount proposed to be paid in
     respect of such Defaulted Interest or shall make arrangements satisfactory
     to the Trustee for such deposit prior to the date of the proposed payment,
     such money when deposited to be held in trust for the benefit of the
     Persons entitled to such Defaulted Interest as in this Clause provided.
     Thereupon the Trustee shall fix a Special Record Date for the payment of
     such Defaulted Interest which shall be not more than 15 days and not less
     than 10 days prior to the date of the proposed payment and not less than 10
     days after the receipt by the Trustee of the

                                       24

 
     notice of the proposed payment. The Trustee shall promptly notify the
     Company of such Special Record Date and, in the name and at the expense of
     the Company, shall cause notice of the proposed payment of such Defaulted
     Interest and the Special Record Date therefor to be given to each Holder of
     Securities of such series in the manner set forth in Section 1.6, not less
     than 10 days prior to such Special Record Date. Notice of the proposed
     payment of such Defaulted Interest and the Special Record Date therefor
     having been so mailed, such Defaulted Interest shall be paid to the Persons
     in whose names the Securities of such series (or their respective
     Predecessor Securities) are registered at the close of business on such
     Special Record Date and shall no longer be payable pursuant to the
     following Clause (2).

          (2)  The Company may make payment of any Defaulted Interest on the
     Securities of any series in any other lawful manner not inconsistent with
     the requirements of any securities exchange on which such Securities may be
     listed, and upon such notice as may be required by such exchange, if, after
     notice given by the Company to the Trustee of the proposed payment pursuant
     to this Clause, such manner of payment shall be deemed practicable by the
     Trustee.

          Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest accrued
and unpaid, and to accrue, which were carried by such other Security.

Section 3.8  Persons Deemed Owners.

          Prior to due presentment of a Security for registration of transfer,
the Company, the Trustee and any agent of the Company or the Trustee may treat
the Person in whose name such Security is registered as the owner of such
Security for the purpose of receiving payment of principal of and any premium
and (subject to Section 3.7) any interest on such Security and for all other
purposes whatsoever, whether or not such Security be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

Section 3.9  Cancellation.

          All Securities surrendered for payment, redemption, registration of
transfer or exchange or for credit against any sinking fund payment shall, if
surrendered to any Person other than the Trustee, be delivered to the Trustee
and shall be promptly cancelled by it. The Company may at any time deliver to
the Trustee for cancellation any Securities previously authenticated and
delivered hereunder which the Company may have acquired in any manner
whatsoever, and may deliver to the Trustee (or to any other Person for delivery
to the Trustee) for cancellation any Securities previously authenticated
hereunder which the Company has not issued and sold, and all Securities so
delivered shall be promptly cancelled by the Trustee. No

                                      25

 
Securities shall be authenticated in lieu of or in exchange for any Securities
cancelled as provided in this Section, except as expressly permitted by this
Indenture. All cancelled Securities held by the Trustee shall be destroyed and a
certificate of destruction delivered by the Trustee to the Company, unless the
Company otherwise directs the Trustee by a Company Order.

Section 3.10  Computation of Interest.

          Except as otherwise specified as contemplated by Section 3.1 for
Securities of any series, interest on the Securities of each series shall be
computed on the basis of a 360-day year of twelve 30-day months.

Section 3.11  CUSIP Numbers.

          The Company in issuing the Securities may use "CUSIP" numbers (if then
generally in use), and, if so, the Trustee shall use "CUSIP" numbers in notices
of redemption as a convenience to Holders; provided, however, that any such
notice may state that no representation is made as to the correctness of such
numbers either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other identification
numbers printed on the Securities, and any such redemption shall not be affected
by any defect in or omission of such numbers.

                                  ARTICLE IV

                          Satisfaction and Discharge

Section 4.1  Satisfaction and Discharge of Indenture.

          This Indenture shall upon Company Request cease to be of further
effect (except as to any surviving rights of registration of transfer or
exchange of Securities herein expressly provided for), and the Trustee, at 
the expense of the Company, shall execute proper instruments acknowledging
satisfaction and discharge of this Indenture, when

          (1)  either

          (A)  all Securities theretofore authenticated and delivered (other
     than (i) Securities which have been destroyed, lost or stolen and which
     have been replaced or paid as provided in Section 3.6 and (ii) Securities
     for whose payment money has theretofore been deposited in trust or
     segregated and held in trust by the Company and thereafter repaid to the
     Company or discharged from such trust, as provided in Section 10.3) have
     been delivered to the Trustee for cancellation; or

          (B) all such Securities not theretofore delivered to the Trustee for
     cancellation

                                      26

 
               (i)    have become due and payable, or

               (ii)   will become due and payable at their Stated Maturity
          within one year, or

               (iii)  are to be called for redemption within one year under
          arrangements satisfactory to the Trustee for the giving of notice of
          redemption by the Trustee in the name, and at the expense, of the
          Company,

     and the Company, in the case of (i), (ii) or (iii) above, has deposited or
     caused to be deposited with the Trustee as trust funds in trust for the
     purpose and amount sufficient to pay and discharge the entire indebtedness
     on such Securities not theretofore delivered to the Trustee for
     cancellation, for principal and any premium and interest to the date of
     such deposit (in the case of Securities which have become due and payable)
     or to the Stated Maturity or Redemption Date, as the case may be;

          (2)  the Company has paid or caused to be paid all other sums payable
     hereunder by the Company; and

          (3)  the Company has delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel, each stating that all conditions precedent
     herein provided for relating to the satisfaction and discharge of this
     Indenture have been complied with.

          Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 6.7, the obligations of
the Trustee to any Authenticating Agent under Section 6.14 and, if money shall
have been deposited with the Trustee pursuant to subclause (B) of Clause (1) of
this Section, the obligations of the Trustee under Section 4.2 and the last
paragraph of Section 10.3 shall survive.

Section 4.2  Application of Trust Money.

          Subject to provisions of the last paragraph of Section 10.3, all money
deposited with the Trustee pursuant to Section 4.1 shall be held in trust and
applied by it, in accordance with the provisions of the Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal and any premium 
and interest for whose payment such money has been deposited with the Trustee.

                                      27

 
                                   ARTICLE V

                                   Remedies

Section 5.1  Events of Default.

          "Event of Default," wherever used herein with respect to Securities of
any series, means any one of the following events (whatever the reason for such
Event of Default and whether it shall be voluntary or involuntary or be effected
by operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):

          (1)  default in the payment of any interest upon any Security of that
     series when it becomes due and payable, and continuance of such default for
     a period of 30 days; or

          (2)  default in the payment of the principal of (or premium, if any,
     on) any Security of that series at its Maturity; or

          (3)  failure to perform or comply with the provisions set forth under
     Section 8.1; or

          (4)  default in the deposit of any sinking fund or other payment
     required pursuant to the terms of a Security of that series as established
     pursuant to Section 3.1(8), when and as due by the terms of a Security of
     that series; or

          (5)  default in the performance, or breach, of any covenant or
     warranty of the Company in this Indenture (other than a covenant or
     warranty a default in whose performance or whose breach is elsewhere in
     this Section specifically dealt with or which has expressly been included
     in this Indenture solely for the benefit of series of Securities other than
     that series, provided that for purposes of this clause (5) any covenant or
     agreement on the part of the Company contained in this Indenture which is
     not limited to a series of Securities shall be in respect of all series of
     Securities), and continuance of such default or breach for a period of 60
     days after there has been given, by registered or certified mail, to the
     Company by the Trustee or to the Company and the Trustee by the Holder or
     Holders of at least 10% in principal amount of the Outstanding Securities
     of that series a written notice specifying such default or breach and
     requiring it to be remedied and stating that such notice is a "Notice of
     Default" hereunder; or

          (6)  a default or defaults under any bonds, debentures, notes or other
     evidences of, or obligations constituting, Debt of the Company or any
     Restricted Subsidiary (other than Securities of that series) or under any
     mortgages, indentures, instruments (including this Indenture) or agreements
     under which there may be issued or existing or by which there may be
     secured or evidenced any Debt of the Company or any Restricted 

                                      28

 
     Subsidiary, in any such case with a principal or similar amount then
     outstanding, individually or in the aggregate, in excess of $25,000,000,
     whether such Debt exists as of the date of this Indenture or is thereafter
     created, which default or defaults constitute a failure to pay any portion
     of the principal or similar amount of such Debt when due and payable or
     which would enable the holder thereof to cause such Debt to become due and
     payable prior to the date on which it would otherwise have become due and
     payable; or

          (7)  the rendering of a final judgment or judgments (not subject to
     appeal) against the Company or any of its Restricted Subsidiaries
     individually or in the aggregate, in excess of $25,000,000, which remains
     unstayed, undischarged or unbonded for a period of 60 days thereafter; or

          (8)  the entry by a court having jurisdiction in the premises of (A) 
     a decree or order for relief in respect of the Company or any Restricted
     Subsidiary in an involuntary case or proceeding under any applicable
     Federal or State bankruptcy, insolvency, reorganization or other similar
     law or (B) a decree or order adjudging the Company or any Restricted
     Subsidiary a bankrupt or insolvent, or approving as properly filed a
     petition seeking reorganization, arrangement, adjustment or composition 
     of or in respect of the Company or any Restricted Subsidiary under any
     applicable Federal or State law, or appointing a custodian, receiver,
     liquidator, assignee, trustee, sequestrator or other similar official of
     the Company or any Restricted Subsidiary or of any substantial part of its
     property, or ordering the winding up or liquidation of its affairs, and the
     continuance of any such decree or order for relief or any such other decree
     or order unstayed and in effect for a period of 60 consecutive days; or

          (9)  the commencement by the Company or any Restricted Subsidiary of 
     a voluntary case or proceeding under any applicable Federal or State
     bankruptcy, insolvency, reorganization or other similar law or of any other
     case or proceeding to be adjudicated a bankrupt or insolvent, or the
     consent by it to the entry of a decree or order for relief in respect of
     the Company or any Restricted Subsidiary in an involuntary case or
     proceeding under any applicable Federal or State bankruptcy, insolvency,
     reorganization or other similar law or to the commencement of any
     bankruptcy or insolvency case or proceeding against it, or the filing by it
     of a petition or answer or consent seeking reorganization or relief under
     any applicable Federal or State law, or the consent by it to the filing of
     such petition or to the appointment of or taking possession by a custodian,
     receiver, liquidator, assignee, trustee, sequestrator or other similar
     official of the Company or any Restricted Subsidiary or of any substantial
     part of its property, or the making by it of an assignment for the benefit
     of creditors, or the admission by it in writing of its inability to pay its
     debts generally as they become due, or the taking of corporate action by
     the Company or any Restricted Subsidiary in furtherance of any such action;
     or

                                      29

 
             (10)  any event which constitutes an "Event of Default" under the
        terms governing Securities of that series established as provided in
        Section 3.1.

     Section 5.2  Acceleration of Maturity; Rescission and Annulment.

               If an Event of Default (other than an Event of Default specified
     in Section 5.1(8) or (9)) with respect to Securities of any series at the
     time Outstanding occurs and is continuing, either the Trustee or the Holder
     or Holders of at least 25% in aggregate principal amount of the Outstanding
     Securities of that series may declare the principal amount (or, if any of
     the Securities of that series are Original Issue Discount Securities, such
     portion of the principal amount of such Securities as may be specified in
     the terms thereof) of all of the Outstanding Securities of that series to
     be due and payable immediately, by a notice in writing to the Company (and
     to the Trustee if given by Holders), and upon any such declaration such
     principal amount (or specified amount) shall become immediately due and
     payable.  If an Event of Default specified in Section 5.1(8) or (9) with
     respect to Securities of any series of any time outstanding occurs and is
     continuing, the principal amount (or, if any of the Securities of that
     series are Original Issue Discount Securities, such portion of the
     principal amount of such Securities as may be specified in the terms
     thereof) of all of the Outstanding Securities of that series shall become
     immediately due and payable without any declaration or other act on the
     part of the Trustee or any Holders of that series.

               At any time after such a declaration of acceleration with respect
     to Securities of any series has been made and before a judgment or decree
     for payment of the money due has been obtained by the Trustee as
     hereinafter in this Article provided, the Holders of a majority in
     principal amount of the Outstanding Securities of that series, by written
     notice to the Company and the Trustee, may rescind and annul such
     declaration and its consequences if

               (1)  the Company has paid or irrevocably deposited with the
          Trustee a sum sufficient to pay

                    (A)  all overdue interest on all Securities of that series,

                    (B)  the principal of (and premium, if any, on) any
               Securities of that series which have become due otherwise than by
               such declaration of acceleration and any interest thereon at the
               rate or rates prescribed therefor in such Securities,

                    (C)  to the extent that payment of such interest is lawful,
               interest upon overdue interest at the rate or rates prescribed
               therefor in such Securities, and

                    (D)  all sums paid or advanced by the Trustee hereunder and
               the reasonable compensation, expenses, disbursements and advances
               of the Trustee, its agents and counsel;

                                      30

 
     and

          (2)  all Events of Default with respect to Securities of that series,
     other than the non-payment of the principal of Securities of that series
     which have become due solely by such declaration of acceleration, have been
     cured or waived as provided in Section 5.13.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

Section 5.3  Collection of Indebtedness and Suits for Enforcement by Trustee.

             The Company covenants that if

             (1)  default is made in the payment of any interest on any Security
        when such interest becomes due and payable and such default continues
        for a period of 30 days, or

             (2) default is made in the payment of the principal of (or premium,
        if any, on) any Security at the Maturity thereof,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities, the whole amount then due and payable on such
Securities for principal and any premium and interest and, to the extent that
payment of such interest shall be legally enforceable, interest on any overdue
principal and premium and on any overdue interest, at the rate or rates
prescribed therefor in such Securities, and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel.

             If an Event of Default with respect to Securities of any series
occurs and is continuing, the Trustee may in its discretion proceed to protect
and enforce its rights and the rights of the Holders of Securities of such
series by such appropriate judicial proceedings as the Trustee shall deem most
effectual to protect and enforce any such rights, whether for the specific
enforcement of any covenant or agreement in this Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.

Section 5.4  Trustee May File Proofs of Claim.

             In case of any judicial proceeding relative to the Company (or any
other obligor upon the Securities), its property or its creditors, the Trustee
shall be entitled and empowered, by intervention in such proceeding or
otherwise, to take any and all actions authorized under the Trust Indenture Act
in order to have claims of the Holders and the Trustee allowed in any such
proceeding.  In particular, the Trustee shall be authorized to collect and
receive any moneys or other property payable or deliverable on any such claims
and to distribute the same; and any custodian, receiver, assignee, trustee,
liquidator, sequestrator or other similar official in any 

                                      31

 
such judicial proceeding is hereby authorized by each Holder to make such
payments to the Trustee and, in the event that the Trustee shall consent to 
the making of such payments directly to the Holders, to pay to the Trustee 
any amount due it for the reasonable compensation, expenses, disbursements 
and advances of the Trustee, its agents and counsel, and any other amounts 
due the Trustee under Section 6.7.

             No provision of this Indenture shall be deemed to authorize the
Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

Section 5.5  Trustee May Enforce Claims Without Possession of Securities.

             All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, be for the
ratable benefit of the Holders of the Securities in respect of which such
judgment has been recovered.

Section 5.6  Application of Money Collected.

             Any money collected by the Trustee pursuant to this Article shall
be applied in the following order, at the date or dates fixed by the Trustee
and, in case of the distribution of such money on account of principal or any
premium or interest, upon presentation of the Securities and the notation
thereon of the payment if only partially paid and upon surrender thereof if
fully paid:

             FIRST:  To the payment of all amounts due the Trustee under Section
         6.7; and

             SECOND:  To the payment of the amounts then due and unpaid for
         principal of and any premium and interest on the Securities in respect
         of which or for the benefit of which such money has been collected,
         ratably, without preference or priority of any kind, according to the
         amounts due and payable on such Securities for principal and any
         premium and interest, respectively.

                                      32

 
Section 5.7  Limitation on Suits.

             No Holder of any Security of any series shall have any right to
     institute any proceeding, judicial or otherwise, with respect to this
     Indenture, or for the appointment of a receiver or trustee, or for any
     other remedy hereunder, unless:

             (1) such Holder has previously given written notice to the Trustee
     of a continuing Event of Default with respect to the Securities of that
     series;

             (2)  the Holders of not less than 25% in principal amount of the
     Outstanding Securities of that series shall have made written request to
     the Trustee to institute proceedings in respect of such Event of Default 
     in its own name as Trustee hereunder;

             (3)  such Holder or Holders have offered to the Trustee reasonable
     indemnity against the costs, expenses and liabilities to be incurred in
     compliance with such request;

             (4) the Trustee for 60 days after its receipt of such notice,
     request and offer of indemnity has failed to institute any such proceeding;
     and

             (5)  no direction inconsistent with such written request has been
     given to the Trustee during such 60-day period by the Holders of a majority
     in principal amount of the Outstanding Securities of that series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

Section 5.8  Unconditional Right of Holders to Receive Principal, Premium and
             Interest.

             Notwithstanding any other provision in this Indenture, the Holder
of any Security shall have the right, which is absolute and unconditional, to
receive payment of the principal of and any premium and (subject to Section 3.7)
any interest on such Security on the Stated Maturity or Maturities expressed in
such Security (or, in the case of redemption, on the Redemption Date) and to
institute suit for the enforcement of any such payment, and such rights shall
not be impaired without the consent of such Holder.

Section 5.9  Restoration of Rights and Remedies.

             If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any

                                      33

 
reason, or has been determined adversely to the Trustee or to such Holder, then
and in every such case, subject to any determination in such proceeding, the
Company, the Trustee and the Holders shall be restored severally and
respectively to their former positions hereunder and thereafter all rights and
remedies of the Trustee and the Holders shall continue as though no such
proceeding had been instituted.

Section 5.10  Rights and Remedies Cumulative.

              Except as otherwise provided with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities in the last paragraph
of Section 3.6, no right or remedy herein conferred upon or reserved to the
Trustee or to the Holders is intended to be exclusive of any other right or
remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise.  The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent the
concurrent assertion or employment of any other appropriate right or remedy.

Section 5.11  Delay or Omission Not Waiver.

              No delay or omission of the Trustee or of any Holder of any
Securities to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein. Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time to
time, and as often as may be deemed expedient, by the Trustee or by the Holders,
as the case may be.

Section 5.12  Control by Holders.

              The Holders of a majority in principal amount of the Outstanding
Securities of any series shall have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred on the Trustee, with respect to the
Securities of such series, provided that:

              (1) such direction shall not be in conflict with any rule of law
     or with this Indenture, and

              (2)  the Trustee may take any other action deemed proper by the
     Trustee which is not inconsistent with such direction.

                                      34

 
Section 5.13  Waiver of Past Defaults.

              The Holders of not less than a majority in principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, except a default

              (1) in the payment of the principal of or any premium or interest
     on any Security of such series, or

              (2) in respect of a covenant or provision hereof which under
     Article IX cannot be modified or amended without the consent of the Holder
     of each Outstanding Security of such series affected.

               Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

Section 5.14  Undertaking for Costs.

              In any suit for the enforcement of any right or remedy under this
Indenture, or in any suit against the Trustee for any action taken, suffered or
omitted by it as Trustee, a court may require any party litigant in such suit to
file an undertaking to pay the costs of such suit, and may assess costs against
any such party litigant, in the manner and to the extent provided in the Trust
Indenture Act; provided that neither this Section nor the Trust Indenture Act
shall be deemed to authorize any court to require such an undertaking or to make
such an assessment in any suit instituted by the Company or the Trustee.

Section 5.15  Waiver of Stay or Extension Laws.

              The Company covenants (to the extent that it may lawfully do so)
that it will not at any time insist upon, or plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay or extension law wherever
enacted, now or at any time hereafter in force, which may affect the covenants
or the performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such law
and covenants that it will not hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.

                                      35

 
                                  ARTICLE VI

                                  The Trustee

Section 6.1  Certain Duties and Responsibilities.
 
             The duties and responsibilities of the Trustee shall be as provided
by the Trust Indenture Act. Notwithstanding the foregoing, no provision of this
Indenture shall require the Trustee to expend or risk its own funds or otherwise
incur any financial liability in the performance of any of its duties hereunder,
or in the exercise of any of its rights or powers, if it shall have reasonable
grounds for believing that repayment of such funds or adequate indemnity against
such risk or liability is not reasonably assured to it. Whether or not therein
expressly so provided, every provision of this Indenture relating to the conduct
or affecting the liability of or affording protection to the Trustee shall be
subject to the provisions of this Section.

Section 6.2  Notice of Defaults.

             If a default occurs hereunder with respect to Securities of any
series, the Trustee shall give the Holders of Securities of such series notice
of such default as and to the extent provided by the Trust Indenture Act;
provided, however, that in the case of any default of the character specified in
Section 5.1(5) with respect to Securities of such series, no such notice to
Holders shall be given until at least 30 days after the occurrence thereof.  For
the purpose of this Section, the term "default" means any event which is, or
after notice or lapse of time or both would become, an Event of Default with
respect to Securities of such series.

Section 6.3  Certain Rights of Trustee.

             Subject to the provisions of Section 6.1:

             (a)  the Trustee may rely and shall be protected in acting or
refraining from acting upon any resolution, certificate, statement, instrument,
opinion, report, notice, request, direction, consent, order, bond, debenture,
note, other evidence of indebtedness or other paper or document believed by it
to be genuine and to have been signed or presented by the proper party or
parties;

             (b) any request or direction of the Company mentioned herein shall
be sufficiently evidenced by a Company Request or Company Order and any
resolution of the Board of Directors may be sufficiently evidenced by a Board
Resolution;

             (c)  whenever in the administration of this Indenture the Trustee
shall deem it desirable that a matter be proved or established prior to taking,
suffering or omitting any action 

                                      36

 
hereunder, the Trustee (unless other evidence be herein specifically prescribed)
may, in the absence of bad faith on its part, rely upon an Officers'
Certificate;

             (d)  the Trustee may consult with counsel of its selection and the
written advice of such counsel or any Opinion of Counsel shall be full and
complete authorization and protection in respect of any action taken, suffered
or omitted by it hereunder in good faith and in reliance thereon;

             (e) the Trustee shall be under no obligation to exercise any of the
rights or powers vested in it by this Indenture at the request or direction of
any of the Holders pursuant to this Indenture, unless such Holders shall have
offered to the Trustee reasonable security or indemnity against the costs,
expenses and liabilities which might be incurred by it in compliance with such
request or direction;

             (f) the Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
debenture, note, other evidence of indebtedness or other paper or document, but
the Trustee, in its discretion, may make such further inquiry or investigation
into such facts or matters as it may see fit, and, if the Trustee shall
determine to make such further inquiry or investigation, it shall be entitled to
examine the books, records and premises of the Company, personally or by agent
or attorney;

             (g) the Trustee may execute any of the trusts or powers hereunder
or perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it
hereunder; and

             (h) the Trustee shall not be liable for any action taken, suffered,
or omitted to be taken by it in good faith and reasonably believed by it to be
authorized or within the discretion or rights or powers conferred upon it by
this Indenture.

Section 6.4  Not Responsible for Recitals or Issuance of Securities.

             The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, shall be taken as the statements of
the Company, and the Trustee or any Authenticating Agent assumes no
responsibility for their correctness.  The Trustee makes no representations as
to the validity or sufficiency of this Indenture or of the Securities.  The
Trustee or any Authenticating Agent shall not be accountable for the use or
application by the Company of Securities or the proceeds thereof.

                                      37

 
Section 6.5  May Hold Securities.

             The Trustee, any Authenticating Agent, any Paying Agent, any
Security Registrar or any other agent of the Company, in its individual or any
other capacity, may become the owner or pledgee of Securities and, subject to
Sections 6.8 and 6.13, may otherwise deal with the Company with the same rights
it would have if it were not Trustee, Authenticating Agent, Paying Agent,
Security Registrar or such other agent.

Section 6.6  Money Held in Trust.

             Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law.  The Trustee shall be
under no liability for interest on any money received by it hereunder except as
otherwise agreed in writing with the Company.

Section 6.7  Compensation and Reimbursement.

             The Company agrees:

             (1)  to pay to the Trustee from time to time such compensation as
     shall be agreed to in writing between the Company and the Trustee for all
     services rendered by it hereunder (which compensation shall not be limited
     by any provision of law in regard to the compensation of a trustee of an
     express trust);

             (2) except as otherwise expressly provided herein, to reimburse the
     Trustee upon its request for all reasonable expenses, disbursements and
     advances incurred or made by the Trustee in accordance with any provision
     of this Indenture (including the reasonable compensation and the expenses
     and disbursements of its agents and counsel), except any such expense,
     disbursement or advance as may be attributable to its negligence or bad
     faith; and

             (3) to indemnify the Trustee for, and to hold it harmless against,
     any and all loss, damage, liability or expense, including taxes (other than
     taxes based on the income of the Trustee), incurred without negligence or
     bad faith on its part, arising out of or in connection with the acceptance
     or administration of the trust or trusts hereunder, including the costs and
     expenses of defending itself against any claim or liability in connection
     with the exercise or performance of any of its powers or duties hereunder.

             The Trustee shall have a lien prior to the Securities as to all
property and funds held by it hereunder for any amount owing it or any
predecessor Trustee pursuant to this Section 6.7, except with respect to funds
held in trust for the benefit of the Holders of particular Securities.

                                      38

 
             When the Trustee incurs expenses or renders services in connection
with an Event of Default specified in Section 5.1(8) or Section 5.1(9), the
expenses (including the reasonable charges and expenses of its counsel) and the
compensation for the services are intended to constitute expenses of
administration under any applicable Federal or State bankruptcy, insolvency or
other similar law.

             The provisions of this Section shall survive the termination of
this Indenture.

Section 6.8  Disqualification; Conflicting Interests.

             If the Trustee has or shall acquire a conflicting interest within
the meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act, and this Indenture. To the extent
permitted by such Act, the Trustee shall not be deemed to have a conflicting
interest by virtue of being a trustee under this Indenture with respect to
Securities of more than one series.

Section 6.9  Corporate Trustee Required; Eligibility.

             There shall at all times be a Trustee hereunder which shall be a
Person that is eligible pursuant to the Trust Indenture Act to act as such and
has a combined capital and surplus of at least $50,000,000 and its Corporate
Trust Office in the Borough of Manhattan, The City of New York or in The City of
Chicago, Illinois.  If such Person publishes reports of condition at least
annually, pursuant to law or to the requirements of said supervising or
examining authority, then for the purposes of this Section and to the extent
permitted by the Trust Indenture Act, the combined capital and surplus of such
Person shall be deemed to be its combined capital and surplus as set forth in
its most recent report of condition so published.  If at any time the Trustee
shall cease to be eligible in accordance with the provisions of this Section, it
shall resign immediately in the manner and with the effect hereinafter specified
in this Article.

Section 6.10  Resignation and Removal; Appointment of Successor.

             (a) No resignation or removal of the Trustee and no appointment of
a successor Trustee pursuant to this Article shall become effective until the
acceptance of appointment by the successor Trustee in accordance with the
applicable requirements of Section 6.11.

             (b) The Trustee may resign at any time with respect to the
Securities of one or more series by giving written notice thereof to the
Company. If the instrument of acceptance by a successor Trustee required by
Section 6.11 shall not have been delivered to the Trustee within 30 days after
the giving of such notice of resignation, the resigning Trustee may petition any
court of competent jurisdiction for the appointment of a successor Trustee with
respect to the Securities of such series.

                                      39

 
             (c)  The Trustee may be removed at any time with respect to the
Securities of any series by Act of the Holders of a majority in principal amount
of the Outstanding Securities of such series, delivered to the Trustee and to
the Company.  If the instrument of acceptance by a successor Trustee required by
Section 6.11 shall not have been delivered to the Trustee within 30 days after
such Act of such Holders, the removed Trustee may petition any court of
competent jurisdiction for the appointment of a successor Trustee with respect
to the Securities of such series.

             (d)  If at any time:

             (1) the Trustee shall fail to comply with Section 6.8 after written
     request therefor by the Company or by any Holder who has been a bona fide
     Holder of a Security for at least six months, unless the Trustee's duty to
     resign is stayed in accordance with the provisions of Section 310(b) of the
     Trust Indenture Act, or

             (2)  the Trustee shall cease to be eligible under Section 6.9 and
     shall fail to resign after written request therefor by the Company or by
     any such Holder, or

             (3) the Trustee shall become incapable of acting or shall be
     adjudged a bankrupt or insolvent or a receiver of the Trustee or of its
     property shall be appointed or any public officer shall take charge or
     control of the Trustee or of its property or affairs for the purpose of
     rehabilitation, conservation or liquidation,

then, in any such case, (i) the Company by a Board Resolution may remove the
Trustee with respect to all Securities, or (ii) subject to Section 5.14, any
Holder who has been a bona fide Holder of a Security for at least six months
may, on behalf of himself and all others similarly situated, petition any court
of competent jurisdiction for the removal of the Trustee with respect to all
Securities and the appointment of a successor Trustee or Trustees.  If the
instrument of acceptance by a successor Trustee required by Section 6.11 shall
not have been delivered to the Trustee within 30 days after such removal of the
Trustee described in clauses (i) and (ii) of the immediately preceding sentence,
the removed Trustee may petition any court of competent jurisdiction for the
appointment of a successor Trustee with respect to the Securities of such
series.

             (e)  If the Trustee shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Trustee for any cause, with
respect to the Securities of one or more series, the Company, by a Board
Resolution, shall promptly appoint a successor Trustee or Trustees with respect
to the Securities of that or those series (it being understood that any such
successor Trustee may be appointed with respect to the Securities of one or more
or all of such series and that at any time there shall be only one Trustee with
respect to the Securities of any particular series) and shall comply with the
applicable requirements of Section 6.11.  If, within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to the Securities of any series shall be
appointed by 

                                      40

 
Act of the Holders of a majority in principal amount of the Outstanding
Securities of such series delivered to the Company and the retiring Trustee, 
the successor Trustee so appointed shall, forthwith upon its acceptance of such
appointment in accordance with the applicable requirements of Section 6.11,
become the successor Trustee with respect to the Securities of such series and
to that extent supersede the successor Trustee appointed by the Company. If no
successor Trustee with respect to the Securities of any series shall have been
so appointed by the Company or the Holders and accepted appointment in the
manner required by Section 6.11, any Holder who has been a bona fide Holder of a
Security of such series for at least six months may, on behalf of himself and
all others similarly situated, petition any court of competent jurisdiction for
the appointment of a successor Trustee with respect to the Securities of such
series.

              (f)  The Company shall give notice of each resignation and each
removal of the Trustee with respect to the Securities of any series and each
appointment of a successor Trustee with respect to the Securities of any series
to all Holders of Securities of such series in the manner provided in Section
1.6.  Each notice shall include the name of the successor Trustee with respect
to the Securities of such series and the address of its Corporate Trust Office.

Section 6.11  Acceptance of Appointment by Successor.

              (a)  In case of the appointment hereunder of a successor Trustee
with respect to all Securities, every such successor Trustee so appointed shall
execute, acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or removal
of the retiring Trustee shall become effective and such successor Trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Trustee; but, on the request
of the Company or the successor Trustee, such retiring Trustee shall, upon
payment of its charges, execute and deliver an instrument transferring to such
successor Trustee all the rights, powers and trusts of the retiring Trustee and
shall duly assign, transfer and deliver to such successor Trustee all property
and money held by such retiring Trustee hereunder.

             (b)   In case of the appointment hereunder of a successor Trustee
with respect to the Securities of one or more (but not all) series, the Company,
the retiring Trustee and each successor Trustee with respect to the Securities
of one or more series shall execute and deliver an indenture supplemental hereto
wherein each successor Trustee shall accept such appointment and which (1) shall
contain such provisions as shall be necessary or desirable to transfer and
confirm to, and to vest in, each successor Trustee all the rights, powers,
trusts and duties of the retiring Trustee with respect to the Securities of that
or those series to which the appointment of such successor Trustee relates, (2)
if the retiring Trustee is not retiring with respect to all Securities, shall
contain such provisions as shall be deemed necessary or desirable to confirm
that all the rights, powers, trusts and duties of the retiring Trustee with
respect to the Securities of that or those series as to which the retiring
Trustee is not retiring shall continue to be vested in the retiring Trustee and
(3) shall add to or change any of the provisions of this Indenture as

                                      41

 
shall be necessary to provide for or facilitate the administration of the trusts
hereunder by more than one Trustee, it being understood that nothing herein or
in such supplemental indenture shall constitute such Trustees co-trustees of the
same trust and that each such Trustee shall be trustee of a trust or trusts
hereunder separate and apart from any trust or trusts hereunder administered by
any other such Trustee; and upon the execution and delivery of such supplemental
indenture the resignation or removal of the retiring Trustee shall become
effective to the extent provided therein and each such successor Trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Trustee with respect to the
Securities of that or those series to which the appointment of such successor
Trustee relates; but, on request of the Company or any successor Trustee, such
retiring Trustee shall duly assign, transfer and deliver to such successor
Trustee all property and money held by such retiring Trustee hereunder with
respect to the Securities of that or those series to which the appointment of
such successor Trustee relates.

              (c)  Upon request of any such successor Trustee, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Trustee all such rights, powers and trusts referred
to in paragraphs (a) and (b) of this Section, as the case may be.

              (d)  No successor Trustee shall accept its appointment unless at
the time of such acceptance such successor Trustee shall be qualified and
eligible under this Article.

Section 6.12  Merger, Conversion, Consolidation or Succession to Business.

              Any corporation into which the Trustee may be merged or converted
or with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on the
part of any of the parties hereto. In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Securities so authenticated with the same
effect as if such successor Trustee had itself authenticated such Securities.

Section 6.13  Preferential Collection of Claims Against Company.

              If and when the Trustee shall be or become a creditor of the
Company (or any other obligor upon the Securities), the Trustee shall be subject
to the provisions of the Trust Indenture Act regarding the collection of claims
against the Company (or any such other obligor).

                                      42

 
Section 6.14  Appointment of Authenticating Agent.

              The Trustee may appoint an Authenticating Agent or Agents with
respect to one or more series of Securities which shall be authorized to act on
behalf of the Trustee to authenticate Securities of such series issued upon
original issue and upon exchange, registration of transfer or partial redemption
thereof or pursuant to Section 3.6, and Securities so authenticated shall be
entitled to the benefits of this Indenture and shall be valid and obligatory for
all purposes as if authenticated by the Trustee hereunder. Wherever reference is
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference shall be
deemed to include authentication and delivery on behalf of the Trustee by an
Authenticating Agent and a certificate of authentication executed on behalf of
the Trustee by an Authenticating Agent. Each Authenticating Agent shall be
acceptable to the Company and shall at all times be a corporation organized and
doing business under the laws of the United States of America, any State thereof
or the District of Columbia, authorized under such laws to act as Authenticating
Agent, having a combined capital and surplus of not less than $50,000,000 and
subject to supervision or examination by Federal or State authority. If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or to the requirements of said supervising or examining authority, then
for the purposes of this Section, the combined capital and surplus of such
Authenticating Agent shall be deemed to be its combined capital and surplus as
set forth in its most recent report of condition so published. If at any time an
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

              Any corporation into which an Authenticating Agent may be merged
or converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

              An Authenticating Agent may resign at any time by giving written
notice thereof to the Trustee and to the Company.  The Trustee may at any time
terminate the agency of an Authenticating Agent by giving written notice thereof
to such Authenticating Agent and to the Company.  Upon receiving such a notice
of resignation or upon such a termination, or in case at any time such
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, the Trustee may appoint a successor Authenticating
Agent which shall be acceptable to the Company and shall give notice of such
appointment in the manner provided in Section 1.6 to all Holders of Securities
of the series with respect to which such Authenticating Agent will serve.  Any
successor Authenticating Agent upon acceptance of its appointment hereunder
shall become vested with all the rights, powers and duties of its predecessor

                                      43

 
hereunder, with like effect as if originally named as an Authenticating Agent.
No successor Authenticating Agent shall be appointed unless eligible under the
provisions of this Section.

             The Company agrees to pay to each Authenticating Agent from time to
time reasonable compensation for its services under this Section.

             If an appointment with respect to one or more series is made
pursuant to this Section, the Securities of such series may have endorsed
thereon, in addition to the Trustee's certificate of authentication, an
alternative certificate of authentication in the following form:

             This is one of the Securities of the series designated therein
referred to in the within-mentioned Indenture.

             Dated:_____________
                                               The Bank of New York,
                                                                  As Trustee



                                          By:
                                             -----------------------------
                                               As Authenticating Agent



                         
                                          By:
                                             -----------------------------
                                               Authorized Signatory

                                      44

 
Section 6.15  Trustee's Application for Instructions from the Company.

              Any application by the Trustee for written instructions from the
Company may, at the option of the Trustee, set forth in writing any action
proposed to be taken or omitted by the Trustee under this Indenture and the date
on and/or after which such action shall be taken or such omission shall be
effective.  The Trustee shall not be liable for any action taken by, or omission
of, the Trustee in accordance with a proposal included in such application on or
after the date specified in such application (which date shall not be less than
three Business Days after the date any officer of the Company actually receives
such application, unless any such officer shall have consented in writing to any
earlier date) unless prior to taking any such action (or the effective date in
the case of an omission), the Trustee shall have received written instructions
in response to such application specifying the action to be taken or omitted.

                                  ARTICLE VII

                          Holders' Lists and Reports
                            by Trustee and Company

Section 7.1   Company to Furnish Trustee Names and Addresses of Holders.

              The Company will furnish or cause to be furnished to the Trustee:

              (a) semi-annually, not later than 15 days after the Regular Record
Date for interest for each series of Securities, a list, in such form as the
Trustee may reasonably require, of the names and addresses of the Holders of
Securities of such series as of such Record Date, or if there is no Regular
Record Date for interest for such series of Securities, semi-annually, upon such
dates as are set forth in the Board Resolution or supplemental indenture
authorizing such series; and

              (b) at such other times as the Trustee may request in writing,
within 30 days after the receipt by the Company of any such request, a list of
similar form and content as of a date not more than 15 days prior to the time
such list is furnished;

excluding from any such list names and addresses received by the Trustee in its
capacity as Security Registrar.

Section 7.2   Preservation of Information; Communications to Holders.

              (a) The Trustee shall preserve, in as current a form as is
reasonably practicable, the names and addresses of Holders contained in the most
recent list furnished to the Trustee as provided in Section 7.1 and the names
and addresses of Holders received by the Trustee in its capacity as Security
Registrar. The Trustee may destroy any list furnished to it as provided in
Section 7.1 upon receipt of a new list so furnished.

                                      45


          (b)  The rights of the Holders to communicate with other Holders with
respect to their rights under this Indenture or under the Securities, and the
corresponding rights and privileges of the Trustee, shall be as provided by the
Trust Indenture Act.

          (c)  Every Holder of Securities, by receiving and holding the same,
agrees with the Company and the Trustee that neither the Company nor the Trustee
nor any agent of either of them shall be held accountable by reason of any
disclosure of information as to names and addresses of Holders made pursuant to
the Trust Indenture Act.

Section 7.3  Reports by Trustee.

          (a)  The Trustee shall transmit to Holders such reports concerning the
Trustee and its actions under this Indenture as may be required pursuant to the
Trust Indenture Act at the times and in the manner provided pursuant thereto.
If required by Section 313(a) of the Trust Indenture Act, the Trustee shall,
within 60 days after each February 1 following the date of this Indenture
deliver to Holders a brief report, dated as of such February 1, which complies
with the provisions of such Section 313(a).

          (b)  A copy of each such report shall, at the time of such
transmission to Holders, be filed by the Trustee with each stock exchange upon
which any Securities are listed, with the Commission and with the Company.  The
Company will promptly notify the Trustee when any Securities are listed on any
stock exchange.

Section 7.4  Reports by Company.

          (a)  The Company covenants and agrees to file with the Commission and
provide the Trustee and Holders of Securities such information, documents and
other reports (or copies of such portions of any of the foregoing as the
Commission may from time to time by rules and regulations prescribe) as may be
required pursuant to the Trust Indenture Act at the times and in the manner
provided pursuant to such Act; provided that any such information, documents or
reports required to be filed with the Commission pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934, as amended, shall be filed with the
Trustee within 15 days after the same is so required to be filed with the
Commission.

          (b)  The Company covenants and agrees to file with the Trustee and the
Commission, in accordance with the rules and regulations prescribed from time to
time by the Commission, such additional information, documents and reports, if
any, with respect to compliance by the Company with the conditions and covenants
provided for in this Indenture as may be required from time to time by such
rules and regulations.

          (c)  The Company covenants and agrees to transmit by mail to all
Holders, as the names and addresses of such Holders appear upon the register of
the Company, within 30 days after the filing thereof with the Trustee, such
summaries of information, documents and reports 

                                      46


required to be filed by the Company, if any, pursuant to subsections (a) and (b)
of this Section 7.4 as may be required by rules and regulations prescribed from
time to time by the Commission.

          Delivery of such reports, information and documents to the Trustee is
for informational purposes only and the Trustee's receipt of such shall not
constitute constructive notice of any information contained therein or
determinable from information contained therein, including the Company's
compliance with any of its covenants hereunder (as to which the Trustee is
entitled to rely exclusively on Officers' Certificates).

                                 ARTICLE VIII

                      Consolidation, Merger, Conveyance,
                               Transfer or Lease

Section 8.1  Company May Consolidate, Etc. Only on Certain Terms.

          The Company shall not, in a single transaction or a series of related
transactions,  consolidate with or merge with or into any other Person or sell,
assign, convey, transfer or lease or otherwise dispose of all or substantially
all of its properties and assets to any Person or group of Affiliated Persons,
or permit any of its Restricted Subsidiaries to enter into any such transaction
or transactions, and the Company shall not permit any Person to consolidate with
or merge into the Company or convey, transfer or lease its properties and assets
substantially as an entirety to the Company, unless:

          (1)  in a transaction in which the Company does not survive or in
     which the Company sells, assigns, conveys, transfers, leases or otherwise
     disposes of all or substantially all of its assets, the successor entity to
     the Company shall be organized and validly existing under the laws of the
     United States of America, any State thereof or the District of Columbia and
     shall expressly assume, by an indenture supplemental hereto, executed and
     delivered to the Trustee in form satisfactory to the Trustee, the due and
     punctual payment of the principal of and any premium and interest on all
     the Securities and the performance or observance of every obligation of
     this Indenture on the part of the Company to be performed or observed;

          (2)  immediately before and after giving effect to such transaction
     and treating any Debt that becomes an obligation of the Company or a
     Restricted Subsidiary as a result of such transaction as having been
     incurred by the Company or such Restricted Subsidiary at the time of such
     transaction, no Event of Default or event that with the passing of time or
     the giving of notice, or both, would constitute an Event of Default shall
     have occurred and be continuing;

                                      47

 
          (3)  if, as a result of any such transaction, properties or assets of
     the Company or any Restricted Subsidiary would become subject to a Lien
     prohibited by Section 10.6, the Company or such successor entity to the
     Company, as the case may be, shall take such steps as shall be necessary
     effectively to secure the Securities as required by such Section 10.6; and

          (4)  the Company has delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel, each stating that such consolidation, merger,
     conveyance, transfer or lease and, if a supplemental indenture is required
     in connection with such transaction, such supplemental indenture comply
     with this Article and that all conditions precedent herein provided for
     relating to such transaction have been complied with.

Section 8.2  Successor Substituted.

             Upon any consolidation of the Company with, or merger of the
Company into, any other Person or any sale, assignment, conveyance, transfer or
lease of substantially all the properties and assets of the Company in
accordance with Section 8.1, the successor Person formed by such consolidation
or into which the Company is merged or to which such sale, assignment,
conveyance, transfer or lease is made shall succeed to, and be substituted for,
and may exercise every right and power of, the Company under this Indenture with
the same effect as if such successor Person had been named as the Company
herein; and thereafter, except in the case of a lease, the predecessor Person
shall be relieved of all obligations and covenants under this Indenture and the
Securities.

                                   ARTICLE IX

                            Supplemental Indentures

Section 9.1  Supplemental Indentures Without Consent of Holders.

               Without the consent of any Holders, the Company, when authorized
     by a Board Resolution, and the Trustee, at any time and from time to time,
     may enter into one or more indentures supplemental hereto, in form
     satisfactory to the Trustee, for any of the following purposes:

          (1)  to evidence the succession of another Person to the Company and
     the assumption by any such successor of the covenants of the Company herein
     and in the Securities; or

          (2)  to add to the covenants of the Company for the benefit of the
     Holders of all or any series of Securities (and if such covenants are to be
     for the benefit of less than all series of Securities, stating that such
     covenants are expressly being included solely for 

                                       48


     the benefit of such series) or to surrender any right or power herein
     conferred upon the Company; or

          (3)  to add any additional Events of Default for the benefit of the
     Holders of all or any series of Securities (and if such additional Events
     of Default are to be for the benefit of less than all series of Securities,
     stating that such additional Events of Default are expressly being included
     solely for the benefit of such series); or

          (4)  to add to or change any of the provisions of this Indenture to
     such extent as shall be necessary to permit or facilitate the issuance of
     Securities in bearer form, registrable or not registrable as to principal,
     and with or without interest coupons, or to permit or facilitate the
     issuance of Securities in uncertificated form; or

          (5)  to add to, change or eliminate any of the provisions of this
     Indenture in respect of one or more series of Securities, provided, that
     any such addition, change or elimination (i) shall neither (A) apply to any
     Security of any series created prior to the execution of such supplemental
     indenture and entitled to the benefit of such provision nor (B) modify the
     rights of the Holder of any such Security with respect to such provision or
     (ii) shall become effective only when there is no such Security
     Outstanding; or

          (6)  to secure the Securities pursuant to the requirements of Section
     10.6 or otherwise; or

          (7)  to establish the form or terms of Securities of any series as
     permitted by Sections 2.1 and 3.1; or

          (8)  to evidence and provide for the acceptance of appointment
     hereunder by a successor Trustee with respect to the Securities of one or
     more series and to add to or change any of the provisions of this Indenture
     as shall be necessary to provide for or facilitate the administration of
     the trusts hereunder by more than one Trustee, pursuant to the requirements
     of Section 6.11(b); or

          (9)  to cure any ambiguity, to correct or supplement any provision
     herein which may be inconsistent with any other provision herein, or to
     make any other provisions with respect to matters or questions arising
     under this Indenture, provided that such action pursuant to this clause (9)
     shall not adversely affect the interests of the Holders of Securities of
     any series.

Section 9.2  Supplemental Indentures with Consent of Holders.

               With the consent of the Holders of not less than a majority in
     principal amount of the Outstanding Securities of each series affected by
     such supplemental indenture, by Act of said Holders delivered to the
     Company and the Trustee, the Company, when authorized by a 

                                      49


Board Resolution, and the Trustee may enter into an indenture or indentures
supplemental hereto for the purpose of adding any provisions to or changing in
any manner or eliminating any of the provisions of this Indenture or of
modifying in any manner the rights of the Holders of Securities of such series
under this Indenture; provided, however, that no such supplemental indenture
shall, without the consent of the Holder of each Outstanding Security affected
thereby,

          (1)  change the Stated Maturity of the principal of, or any
     installment of principal of or interest on, any Security, or

          (2)  reduce the principal amount thereof or the rate of interest
     thereon or the rate of accretion of any Original Issue Discount Security or
     any premium payable upon the redemption thereof, or reduce the amount of
     the principal of an Original Issue Discount Security that would be due and
     payable upon a declaration of acceleration of the Maturity thereof pursuant
     to Section 5.2, or

          (3)  change any Place of Payment where, or the coin or currency in
     which, any Security or any premium or interest thereon is payable, or

          (4)  impair the right to institute suit for the enforcement of any
     such payment on or after the Stated Maturity thereof (or, in the case of
     redemption, on or after the Redemption Date), or

          (5)  reduce the percentage in principal amount of the Outstanding
     Securities of any series, the consent of whose Holders is required for any
     such supplemental indenture, or the consent of whose Holders is required
     for any waiver (of compliance with certain provisions of this Indenture or
     certain defaults hereunder and their consequences) provided for in this
     Indenture, or

          (6)  modify any of the provisions of this Section, Section 5.8,
     Section 5.13 or Section 10.11, except to increase any such percentage or to
     provide that certain other provisions of this Indenture cannot be modified
     or waived without the consent of the Holder of each Outstanding Security
     affected thereby; provided, however, that this clause shall not be deemed
     to require the consent of any Holder with respect to changes in the
     references to "the Trustee" and concomitant changes in this Section and
     Section 10.11, or the deletion of this proviso, in accordance with the
     requirements of Sections 6.11(b) and 9.1(8), or

          (7)  modify any provision of this Indenture relating to the
     modification and amendment of this Indenture or the waiver of past defaults
     or covenants, except as otherwise specified in this Indenture, in a manner
     adverse to the Holders thereof.

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular 

                                      50


series of Securities, or which modifies the rights of the Holders of Securities
of such series with respect to such covenant or other provision, shall be deemed
not to affect the rights under this Indenture of the Holders of Securities of
any other series.

          It shall not be necessary for any Act of Holders under this Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.

Section 9.3  Execution of Supplemental Indentures.

          In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 6.1) shall be fully protected in relying upon, an
Opinion of Counsel stating that the execution of such supplemental indenture is
authorized or permitted by this Indenture.  The Trustee may, but shall not be
obligated to, enter into any such supplemental indenture which affects the
Trustee's own rights, duties or immunities under this Indenture or otherwise.

Section 9.4  Effect of Supplemental Indentures.

          Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Securities theretofore or thereafter authenticated and delivered hereunder
shall be bound thereby.

Section 9.5  Conformity with Trust Indenture Act.

          Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act.

Section 9.6  Reference in Securities to Supplemental Indentures.

          Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture.  If the Company shall
so determine, new Securities of any series so modified as to conform, in the
opinion of the Trustee and the Company, to any such supplemental indenture may
be prepared and executed by the Company and authenticated and delivered by the
Trustee in exchange for Outstanding Securities of such series.

                                      51


                                   ARTICLE X

                                   Covenants

Section 10.1  Payment of Principal, Premium and Interest.

          The Company covenants and agrees for the benefit of each series of
Securities that it will duly and punctually pay the principal of and any premium
and interest on the Securities of that series in accordance with the terms of
the Securities and this Indenture.

Section 10.2  Maintenance of Office or Agency.

          The Company will maintain in each Place of Payment for any series of
Securities an office or agency where Securities of that series may be presented
or surrendered for payment, where Securities of that series may be surrendered
for registration of transfer or exchange and where notices and demands to or
upon the Company in respect of the Securities of that series and this Indenture
may be served.  The Company will give prompt written notice to the Trustee of
the location, and any change in the location, of such office or agency.  If at
any time the Company shall fail to maintain any such required office or agency
or shall fail to furnish the Trustee with the address thereof, such
presentations, surrenders, notices and demands may be made or served at the
Corporate Trust Office of the Trustee, and the Company hereby appoints the
Trustee as its agent to receive all such presentations, surrenders, notices and
demands.

          The Company may also from time to time designate one or more other
offices or agencies where the Securities of one or more series may be presented
or surrendered for any or all such purposes and may from time to time rescind
such designations; provided, however, that no such designation or rescission
shall in any manner relieve the Company of its obligation to maintain an office
or agency in each Place of Payment for Securities of any series for such
purposes.  The Company will give prompt written notice to the Trustee of any
such designation or rescission and of any change in the location of any such
other office or agency.

Section 10.3  Money for Securities Payments to Be Held in Trust.

          If the Company shall at any time act as its own Paying Agent with
respect to any series of Securities, it will, on or before each due date of the
principal of or any premium or interest on any of the Securities of that series,
segregate and hold in trust for the benefit of the Persons entitled thereto a
sum sufficient to pay the principal and any premium and interest so becoming due
until such sums shall be paid to such Persons or otherwise disposed of as herein
provided and will promptly notify the Trustee of its action or failure so to
act.

          Whenever the Company shall have one or more Paying Agents for any
series of Securities, it will, prior to each due date of the principal of or any
premium or interest on any Securities of that series, deposit with a Paying
Agent a sum sufficient to pay such amount, such 

                                      52


sum to be held as provided by the Trust Indenture Act, and (unless such Paying
Agent is the Trustee) the Company will promptly notify the Trustee of its action
or failure so to act.

          The Company will cause each Paying Agent for any series of Securities
other than the Trustee to execute and deliver to the Trustee an instrument in
which such Paying Agent shall agree with the Trustee, subject to the provisions
of this Section, that such Paying Agent will (i) comply with the provisions of
the Trust Indenture Act applicable to it as a Paying Agent and (ii) during the
continuance of any default by the Company (or any other obligor upon the
Securities of that series) in the making of any payment in respect of the
Securities of that series, and upon the written request of the Trustee,
forthwith pay to the Trustee all sums held in trust by such Paying Agent for
payment in respect of the Securities of that series.

          The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such money.

          Any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal of or any premium or
interest on any Security of any series and remaining unclaimed for two years
after such principal, premium or interest has become due and payable shall be
paid to the Company on Company Request, or (if then held by the Company) shall
be discharged from such trust; and the Holder of such Security shall thereafter,
as an unsecured general creditor, look only to the Company for payment thereof,
and all liability of the Trustee or such Paying Agent with respect to such trust
money, and all liability of the Company as trustee thereof, shall thereupon
cease; provided, however, that the Trustee or such Paying Agent, before being
required to make any such repayment, may at the expense of the Company cause to
be published once, in a newspaper published in the English language, customarily
published on each Business Day and of general circulation in New York, New York,
notice that such money remains unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such publication,
any unclaimed balance of such money then remaining will be repaid to the
Company.

Section 10.4  Statement by Officers as to Default.

          The Company will deliver to the Trustee, within 120 days after the end
of each fiscal year of the Company ending after the date hereof, an Officers'
Certificate, stating whether or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the terms,
provisions and conditions of this Indenture (without regard to any period of
grace or requirement of notice provided hereunder) and, if the Company shall 

                                      53

 
be in default, specifying all such defaults and the nature and status thereof of
which they may have knowledge.

Section 10.5  Existence.

          Subject to Article VIII, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its existence,
rights (charter and statutory) and franchises; provided, however, that the
Company shall not be required to preserve any such right or franchise if the
Board of Directors shall determine that the preservation thereof is no longer
desirable in the conduct of the business of the Company and that the loss
thereof is not disadvantageous in any material respect to the Holders.

Section 10.6  Restrictions on Secured Debt.

          The Company will not, nor will it permit any Restricted Subsidiary to,
Incur any Debt secured by a Lien on any (i) Principal Property or any part
thereof, (ii) Capital Stock of a Restricted Subsidiary now owned or hereafter
acquired by the Company or by any Restricted Subsidiary or (iii) Debt of a
Restricted Subsidiary owed to the Company or to any Restricted Subsidiary,
without in any such case under clause (i), (ii) or (iii) effectively providing
concurrently with such Incurrence that the Outstanding Securities of any series
to which this Section 10.6 applies (pursuant to Section 3.1) (together with, if
the Company shall so determine, any other Debt of the Company or such Restricted
Subsidiary then existing or thereafter created which is not subordinated to the
Securities) are secured equally and ratably with (or, at the Company's option,
prior to) such secured Debt and any other Debt required to be so secured, unless
the aggregate amount of all such secured Debt outstanding at such time, plus all
Attributable Debt of the Company and its Restricted Subsidiaries with respect to
Sale and Leaseback Transactions involving Principal Properties outstanding at
such time (with the exception of such transactions that are excluded as
described pursuant to clauses (1) to (4) of Section 10.7), would not exceed 10%
of Consolidated Net Tangible Assets; provided, however, that this Section 10.6
shall not apply to, and there shall be excluded from Debt in any computation
under this Section 10.6:

          (1)  Debt secured by a Lien in favor of the Company or a Restricted
     Subsidiary;

          (2)  Debt secured by a Lien in favor of governmental bodies to secure
     progress or advance payments or payments pursuant to contracts or statute;

          (3)  Debt secured by a Lien on property, Capital Stock or Debt
     existing at the time of acquisition thereof (including acquisition through
     merger, consolidation or otherwise) and not Incurred in anticipation
     thereof;

          (4)  Debt Incurred or Guaranteed to finance the acquisition of
     property, Capital Stock or Debt, or to finance construction on, or
     improvement or expansion of, property, 

                                      54


     which Debt is Incurred within 180 days of such acquisition or completion of
     construction, improvement or expansion, and is secured solely by a Lien on
     the property, Capital Stock or Debt acquired, constructed, improved or
     expanded;

          (5)  Debt consisting of industrial revenue or pollution control bonds
     or similar financing secured solely by a Lien on the property the subject
     thereof;

          (6)  secured Debt outstanding on the date of the Indenture; or

          (7)  any extension, renewal, refunding or replacement of any Debt
     referred to in clauses (3), (4) and (6) of this Section 10.6.
 
Section 10.7  Limitation on Sales and Leasebacks.

          Neither the Company nor any Restricted Subsidiary shall enter into any
Sale and Leaseback Transaction involving any Principal Property or any part
thereof unless the aggregate amount of all Attributable Debt of the Company and
its Restricted Subsidiaries with respect to such transactions outstanding at
such time, plus all secured Debt outstanding at such time to which the
restriction described in Section 10.6 applies, would not exceed 10% of
Consolidated Net Tangible Assets; provided, however, that this Section 10.7
shall not apply to, and there shall be excluded in any computation under Section
10.6 or this Section 10.7 of Attributable Debt with respect to, any Sale and
Leaseback Transaction if:

          (1)  the lease is for a period of not in excess of three years,
     including renewal rights;

          (2)  the lease secures or relates to industrial revenue or pollution
     control bonds or similar financing;

          (3)  the transaction is between the Company and a Restricted
     Subsidiary or between Restricted Subsidiaries; or

          (4)  the Company or such Restricted Subsidiary, within 270 days after
     the sale is completed, applies an amount equal to the greater of (i) the
     net proceeds of the sale of the Principal Property or part thereof leased
     pursuant to such arrangement or (ii) the fair market value of the Principal
     Property or part thereof leased at the time of entering into such
     arrangement (as determined by the President and Chief Executive Officer or
     the Treasurer) either to (a) the retirement (or open market purchase) of
     Securities, other Funded Debt of the Company ranking on a parity with or
     senior to Securities or Funded Debt of a Restricted Subsidiary or (b) the
     purchase by the Company or any Restricted Subsidiary of other property,
     plant or equipment related to the business of the Company or any Restricted
     Subsidiary having a value at least equal to the value of the Principal
     Property or part thereof leased.

                                      55


Section 10.8  Limitations on Restricted Payments.

          The Company will not, nor will it permit any Restricted Subsidiary to,
directly or indirectly (i) declare or pay any dividend or make any distribution
on account of the Company's Capital Stock (other than dividends or distributions
payable in Capital Stock (other than Disqualified Stock) of the Company or
dividends or distributions payable to the Company or any Wholly-Owned Restricted
Subsidiary of the Company), (ii) purchase, redeem or otherwise acquire or retire
for value any Capital Stock of the Company other than any such Capital Stock
owned by the Company or any Wholly-Owned Restricted Subsidiary of the Company or
(iii) redeem, defease (including, but not limited to, legal or covenant
defeasance), repurchase, retire or otherwise acquire or retire for value prior
to any scheduled maturity, repayment or sinking fund payment, Debt of the
Company (other than the Securities of that series) that is subordinate in right
of payment to Securities (all such payments and other actions set forth in
clauses (i), (ii) and (iii) above being collectively referred to as "Restricted
Payments"), unless, at the time of such Restricted Payment:

          (a)  no Event of Default or event that with the passing of time or the
     giving of notice, or both, would constitute an Event of Default shall have
     occurred and be continuing or would occur as a consequence thereof; and

          (b)  upon giving effect to such Restricted Payment on a pro forma
     basis (the value of any such payment, if other than cash, being determined
     by the Board of Directors and evidenced by a resolution set forth in an
     Officers' Certificate delivered to the Trustee) the Consolidated Net Worth
     of the Company would exceed:

               (I)  if the long-term unsecured Debt of the Company is not rated
          Investment Grade by each of Moody's and S&P, the sum of (x)
          $250,000,000 and (y) an amount equal to the greater of zero and 50% of
          cumulative Consolidated Net Income of the Company since June 30, 1996;
          or

               (II) if the long-term unsecured Debt of the Company is rated
          Investment Grade by each of Moody's and S&P, the amount determined
          pursuant to Section 10.8(b)(I) as of the last day of the most recent
          fiscal quarter prior to the date on which such debt became so rated by
          each of Moody's and S&P.

          The foregoing restrictions in this Section 10.8 will not prohibit (i)
the payment of any dividend within 60 days after the date of declaration
thereof, if at said date of declaration such payment would have complied with
the provisions of this Indenture, (ii) the redemption, repurchase, retirement or
other acquisition of any Capital Stock of the Company in exchange for, or out of
the proceeds of, the substantially concurrent sale (other than to a Restricted
Subsidiary of the Company) of other Capital Stock of the Company (other than any
Disqualified Stock), (iii) the repurchase, redemption or other acquisition or
retirement for value of any Capital Stock of the Company held by any member of
the Company's (or any of its Restricted Subsidiaries') 

                                      56


management or any director of the Company pursuant to any management equity
subscription agreement, stock option agreement or other employee benefit plan or
program, (iv) payments not exceeding $15,000,000 in the aggregate in any twelve
month period with respect to dividends on any series of preferred stock of the
Company (other than Disqualified Stock) issued after the date of this Indenture,
(v) any redemption by the Company of any series of preferred stock of the
Company or Debt of the Company which is convertible into common stock of the
Company if at the time of such redemption the Company has an underwriting
commitment on customary terms from a nationally recognized broker-dealer to
purchase all shares of such series of preferred stock or convertible Debt (or
shares of common stock into which such preferred stock or convertible Debt is
convertible) which are not converted as of the redemption date and (vi) any
Restricted Payment made in connection with any merger, consolidation or sale
permitted under Article VIII; provided that in the case of any transaction under
clause (iii) or (iv) above, no Event of Default or event that with the passing
of time or the giving of notice, or both, would constitute an Event of Default
shall have occurred and be continuing immediately after such transaction.

Section 10.9  Limitations on Transactions with Affiliates.

          The Company will not, nor will it permit any Restricted Subsidiary to,
sell, lease, transfer or otherwise dispose of any of its properties or assets
to, or purchase any property or assets from, or enter into or make any contract,
agreement, understanding, loan, advance or guarantee with or for the benefit of,
any Affiliate unless (i) such transaction or series of transactions is on terms
that are no less favorable to the Company or such Restricted Subsidiary, as the
case may be, than would be available in a comparable transaction with an
unrelated third party and (ii) the Company delivers to the Trustee, except with
respect to the purchase or sale of products from or to Inland Steel Industries,
Inc. or any of its Affiliates, (a) with respect to a transaction or series of
transactions involving aggregate payments in excess of 1% of Consolidated Net
Tangible Assets, a Board Resolution set forth in an Officers' Certificate
certifying that such transaction complies with clause (i) above and has been
approved by a majority of the independent members of the Board of Directors, and
(b) with respect to a transaction or series of transactions involving aggregate
payments equal to or greater than 4% of Consolidated Net Tangible Assets, the
Company receives a written opinion from a nationally recognized expert that such
transaction or series of transactions is fair to the Company from a financial
point of view; provided that (i) employment agreements, (ii) transactions
between or among the Company and its Restricted Subsidiaries or between or among
its Restricted Subsidiaries, (iii) transactions permitted by Section 10.8 and
(iv) arrangements with Affiliates in effect as of the date of this Indenture,
including any renewal, restructuring, amendment, refinancing or modification of
any such arrangement which does not materially adversely affect the interests of
the Holders of Securities in the reasonable judgment of the Company, in each
case, will not be subject to this Section 10.9.

                                      57


Section 10.10  Waiver of Certain Covenants.

          The Company may omit in any particular instance to comply with any
term, provision or condition set forth in Sections 10.6 to 10.9, inclusive, with
respect to the Securities of any series if before the time for such compliance
the Holders of at least a majority in principal amount of the Outstanding
Securities of such series shall, by Act of such Holders, either waive such
compliance in such instance or generally waive compliance with such term,
provision or condition, but no such waiver shall extend to or affect such term,
provision or condition except to the extent so expressly waived, and, until such
waiver shall become effective, the obligations of the Company and the duties of
the Trustee in respect of any such term, provision or condition shall remain in
full force and effect.

Section 10.11  Provision of Financial Information.

          Whether or not the Company is required to be subject to Section 13(a)
or 15(d) of the Securities Exchange Act of 1934, as amended, or any successor
provision thereto, the Company shall file with the Commission the annual
reports, quarterly reports and other documents which the Company would have been
required to file with the Commission pursuant to such Section 13(a) or 15(d) or
any successor provision thereto if the Company were so required, such documents
to be filed with the Commission on or prior to the respective dates (the
"Required Filing Dates") by which the Company would have been required so to
file such documents if the Company were so required. The Company shall also in
any event (a)(i) promptly upon written request transmit by mail to any Holders
of Outstanding Securities, as their names and addresses appear in the Security
Register, and to any prospective holder, without cost to such holders, and (ii)
within 15 days of each Required Filing Date, file with the Trustee, copies of
the annual reports, quarterly reports and other documents which the Company
would have been required to file with the Commission pursuant to Section 13(a)
or 15(d) of the Exchange Act or any successor provisions thereto if the Company
were required to be subject to such Sections and (b) if filing such documents by
the Company with the Commission is not permitted under the Exchange Act, (i)
promptly upon written request supply copies of such documents to any Holder and
prospective holder and (ii) file copies of such documents with the Trustee.

Section 10.12  Calculation of Original Issue Discount.

          The Company shall file with the Trustee promptly at the end of each
calendar year a written notice specifying the amount of original issue discount
(including daily rates and accrual periods) accrued on Outstanding Securities as
of the end of such year.

                                      58


Section 10.13  Appointments to Fill Vacancies in Trustee's Office.

          The Company, whenever necessary to avoid or fill a vacancy in the
office of the Trustee, will appoint, in the manner provided in Section 6.10, a
Trustee, so that there shall at all times be a Trustee hereunder.

                                  ARTICLE XI

                           Redemption of Securities

Section 11.1  Applicability of Article.

          Securities of any series which are redeemable before their Stated
Maturity shall be redeemable in accordance with their terms and (except as
otherwise specified as contemplated by Section 3.1 for Securities of any series)
in accordance with this Article.

Section 11.2  Election to Redeem; Notice to Trustee.

          The election of the Company to redeem any Securities shall be
evidenced by a Board Resolution or in another manner specified as contemplated
by Section 3.1 for such Securities.  In case of any redemption at the election
of the Company, the Company shall, at least 60 days prior to the Redemption Date
fixed by the Company (unless a shorter notice shall be satisfactory to the
Trustee), notify the Trustee of such Redemption Date, of the principal amount of
Securities of such series to be redeemed and, if applicable, of the tenor of the
Securities to be redeemed. In the case of any redemption of Securities prior to
the expiration of any restriction on such redemption provided in the terms of
such Securities or elsewhere in this Indenture, the Company shall furnish the
Trustee with an Officers' Certificate evidencing compliance with such
restriction.

Section 11.3  Selection by Trustee of Securities to Be Redeemed.

          If less than all the Securities of any series are to be redeemed
(unless all of the Securities of such series and of a specified tenor are to be
redeemed), the particular Securities to be redeemed shall be selected not more
than 60 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series not previously called for redemption, by such method
as the Trustee shall deem fair and appropriate and which may provide for the
selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series.  If less than
all of the Securities of such series and of a specified tenor are to be
redeemed, the particular Securities to be redeemed shall be selected not more
than 60 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series and specified tenor not previously called for
redemption in accordance with the preceding sentence.

                                      59


          The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

          The provisions of the two preceding paragraphs shall not apply with
respect to any redemption affecting only a single Security, whether such
Security is to be redeemed in whole or in part.  In the case of any such
redemption in part, the unredeemed portion of the principal amount of the
Security shall be in an authorized denomination (which shall not be less than
the minimum authorized denomination) for such Security.

          For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the redemption of Securities shall relate,
in the case of any Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities which has been or is to be
redeemed.

Section 11.4  Notice of Redemption.

          Notice of redemption shall be given by first-class mail, postage
prepaid, mailed not less than 30 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed, at his address appearing in
the Security Register.

          All notices of redemption shall identify the Securities to be redeemed
(including, subject to Section 3.11, the CUSIP number) and shall state:

          (1)  the Redemption Date,

          (2)  the Redemption Price,

          (3)  if less than all the Outstanding Securities of any series are to
     be redeemed, the identification (and, in the case of partial redemption of
     any Securities, the principal amounts) of the particular Securities to be
     redeemed and, if less than all the Outstanding Securities of any series
     consisting of a single Security are to be redeemed, the principal amount of
     the particular Security to be redeemed,

          (4)  that on the Redemption Date the Redemption Price will become due
     and payable upon each such Security to be redeemed and, if applicable, that
     interest thereon will cease to accrue on and after said date,

          (5)  the place or places where such Securities are to be surrendered
     for payment of the Redemption Price, and

          (6)  that the redemption is for a sinking fund, if such is the case.

                                      60

 
          Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company.

Section 11.5  Deposit of Redemption Price.

          Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 10.3) an amount of
money sufficient to pay the Redemption Price of, and (except if the Redemption
Date shall be an Interest Payment Date) accrued interest on, all the Securities
which are to be redeemed on that date.

Section 11.6  Securities Payable on Redemption Date.

          Notice of redemption having been given as aforesaid, the Securities so
to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified, and from and after such date (unless the
Company shall default in the payment of the Redemption Price and accrued
interest) such Securities shall cease to bear interest.  Upon surrender of any
such Security for redemption in accordance with said notice, such Security shall
be paid by the Company at the Redemption Price, together with accrued interest
to the Redemption Date; provided, however, that, unless otherwise specified as
contemplated by Section 3.1, installments of interest whose Stated Maturity is
on or prior to the Redemption Date shall be payable to the Holders of such
Securities, or one or more Predecessor Securities, registered as such at the
close of business on the relevant Record Dates according to their terms and the
provisions of Section 3.7.

          If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal and any premium shall, until
paid, bear interest from the Redemption Date at the rate prescribed therefor in
the Security.

Section 11.7  Securities Redeemed in Part.

          Any Security which is to be redeemed only in part shall be surrendered
at a Place of Payment therefor (with, if the Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing), and the Company shall execute, and the Trustee
shall authenticate and make available for delivery to the Holder of such
Security without service charge, a new Security or Securities of the same series
and of like tenor, of any authorized denomination as requested by such Holder,
in aggregate principal amount equal to and in exchange for the unredeemed
portion of the principal of the Security so surrendered.  If a Book-Entry
Security is so surrendered, such new Security so issued shall be a new Book-
Entry Security.

                                       61


                                  ARTICLE XII

                                 Sinking Funds

Section 12.1  Applicability of Article.

          The provisions of this Article shall be applicable to any sinking fund
for the retirement of Securities of a series except as otherwise specified as
contemplated by Section 3.1 for Securities of such series.

          The minimum amount of any sinking fund payment provided for by the
terms of Securities of any series is herein referred to as a "mandatory sinking
fund payment," and any payment in excess of such minimum amount provided for by
the terms of Securities of any series is herein referred to as an "optional
sinking fund payment."  If provided for by the terms of Securities of any
series, the cash amount of any sinking fund payment may be subject to reduction
as provided in Section 12.2.  Each sinking fund payment shall be applied to the
redemption of Securities of any series as provided for by the terms of
Securities of such series.

Section 12.2  Satisfaction of Sinking Fund Payments with Securities.

          The Company (1) may deliver Outstanding Securities of a series (other
than any previously called for redemption) and (2) may apply as a credit
Securities of a series which have been redeemed either at the election of the
Company pursuant to the terms of such Securities or through the application of
permitted optional sinking fund payments pursuant to the terms of such
Securities, in each case in satisfaction of all or any part of any sinking fund
payment with respect to the Securities of such series required to be made
pursuant to the terms of such Securities as provided for by the terms of such
series; provided that such Securities have not been previously so credited. Such
Securities shall be received and credited for such purpose by the Trustee at the
Redemption Price specified in such Securities for redemption through operation
of the sinking fund and the amount of such sinking fund payment shall be reduced
accordingly.

Section 12.3  Redemption of Securities for Sinking Fund.

          Not less than 60 days prior to each sinking fund payment date for any
series of Securities, the Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
that series pursuant to the terms of that series, the portion thereof, if any,
which is to be satisfied by payment of cash and the portion thereof, if any,
which is to be satisfied by delivering and crediting Securities of that series
pursuant to Section 12.2 and will also deliver to the Trustee any Securities to
be so delivered.  Not less than 45 days before each such sinking fund payment
date the Trustee shall select the Securities to be redeemed upon such sinking
fund payment date in the manner specified in Section 11.3 and cause notice of
the redemption thereof to be given in the name of and at the 

                                       62


expense of the Company in the manner provided in Section 11.4. Such notice
having been duly given, the redemption of such Securities shall be made upon the
terms and in the manner stated in Sections 11.6 and 11.7.

                                 ARTICLE XIII

                      Defeasance and Covenant Defeasance

Section 13.1  Applicability of Article; Company's Option
              to Effect Defeasance or Covenant Defeasance.

          If pursuant to Section 3.1 provision is made for either or both of (a)
defeasance of the Securities of a series under Section 13.2 or (b) covenant
defeasance of the Securities of a series under Section 13.3, then the provisions
of such Section or Sections, as the case may be, together with the other
provisions of this Article XIII, shall be applicable to the Securities of such
series, and the Company may at its option by Board Resolution or in another
manner specified as contemplated by Section 3.1 for such Securities, at any
time, with respect to the Securities of such series, elect to have either
Section 13.2 (if applicable) or Section 13.3 (if applicable) be applied to the
Outstanding Securities of such series upon compliance with the conditions set
forth below in this Article XIII.

Section 13.2  Defeasance and Discharge.

          Upon the Company's exercise of the above option (if any) applicable to
this Section, the Company shall be deemed to have been discharged from its
obligations with respect to the Outstanding Securities of such series as
provided in this Section on and after the date the conditions precedent set
forth below are satisfied (hereinafter, "defeasance").  For this purpose, such
defeasance means that the Company shall be deemed to have paid and discharged
the entire indebtedness represented by the Outstanding Securities of such series
and to have satisfied all its other obligations under such Securities and this
Indenture insofar as such Securities are concerned (and the Trustee, at the
expense of the Company, shall execute proper instruments acknowledging the
same), except for the following which shall survive until otherwise terminated
or discharged thereunder:  (A) the rights of Holders of Outstanding Securities
of such series to receive, solely from the trust fund described in Section 13.4
as more fully set forth in such Section, payments of the principal of (and
premium and interest, if any, on) such Securities when such payments are due,
(B) the Company's obligations with respect to such Securities under Sections
3.4, 3.5, 3.6, 10.2 and 10.3 and such obligations as shall be ancillary thereto,
(C) the rights, powers, trusts, duties, immunities and other provisions in
respect of the Trustee hereunder and (D) this Article XIII.  Subject to
compliance with this Article XIII, the Company may exercise its option under
this Section 13.2 notwithstanding the prior exercise of its option under Section
13.3 with respect to the Securities of such series.

                                       63


Section 13.3  Covenant Defeasance.

          Upon the Company's exercise of the above option applicable to this
Section, the Company shall be released from its obligations under Sections 8.1,
10.6, 10.7, 10.8 and 10.9 (and any covenant applicable to such Securities that
are determined pursuant to Section 3.1 to be subject to this provision) and the
occurrence of an event specified in Section 5.1(3) and (5) (with respect to any
of Sections 8.1, 10.6, 10.7, 10.8 or 10.9) (and any other Event of Default
applicable to such Securities that are determined pursuant to Section 3.1 to be
subject to this provision) shall not be deemed to be an Event of Default with
respect to the Outstanding Securities of such series on and after the date the
conditions set forth below are satisfied (hereinafter, "covenant defeasance").
For this purpose, such covenant defeasance means that, with respect to the
Outstanding Securities of such series, the Company may omit to comply with and
shall have no liability in respect of any term, condition or limitation set
forth in any such Section or clause whether directly or indirectly by reason of
any reference elsewhere herein to any such Section or clause or by reason of any
reference in any such Section or clause to any other provision herein or in any
other document, but the remainder of this Indenture and such Securities shall be
unaffected thereby.

Section 13.4  Conditions to Defeasance or Covenant Defeasance.

          The following shall be the conditions precedent to application of
Section 13.2 or Section 13.3 to the Outstanding Securities of such series, as
the case may be:

          (1)  The Company shall irrevocably have deposited or caused to be
     deposited with the Trustee (or another trustee satisfying the requirements
     of Section 6.9 who shall agree to comply with the provisions of this
     Article XIII applicable to it) as trust funds in trust for the purpose of
     making the following payments, specifically pledged as security for, and
     dedicated solely to, the benefit of the Holders of such Securities, (A)
     money in an amount, or (B) U.S. Government Obligations which through the
     scheduled payment of principal and interest in respect thereof in
     accordance with their terms will provide, not later than one day before the
     due date of any payment, money in an amount, or (C) a combination thereof,
     sufficient, without reinvestment, in the opinion of a nationally recognized
     firm of independent public accountants expressed in a written certification
     thereof delivered to the Trustee, to pay and discharge, and which shall be
     applied by the Trustee (or other qualifying trustee) to pay and discharge,
     the principal of (and premium and interest, if any on) the Outstanding
     Securities of such series on the Stated Maturity of such principal, or
     premium and interest, if any.  Before such a deposit the Company may make
     arrangements satisfactory to the Trustee for the redemption of Securities
     at a future date or dates in accordance with Article XI, which shall be
     given effect in applying the foregoing.

          (2)  No Event of Default or event which with notice or lapse of time
     or both would become an Event of Default with respect to the Securities of
     such series shall have 

                                      64


     occurred and be continuing (A) on the date of such deposit or (B) insofar
     as subsections 5.1(8) and 5.1(9) are concerned, at any time during the
     period ending on the 90th day after the date of such deposit (it being
     understood that the condition in this condition shall not be deemed
     satisfied until the expiration of such period).

          (3)  Such defeasance or covenant defeasance shall not (A) cause the
     Trustee for the Securities of such series to have a conflicting interest
     for purposes of the Trust Indenture Act with respect to any securities of
     the Company or (B) result in the trust arising from such deposit to
     constitute, unless it is qualified as, a regulated investment company under
     the Investment Company Act of 1940, as amended.

          (4)  Such defeasance or covenant defeasance shall not result in a
     breach or violation of, or constitute a default under, this Indenture or
     any other agreement or instrument to which the Company is a party or by
     which it is bound.

          (5)  In the case of an election under Section 13.2 with respect to any
     series of Securities, the Company shall have delivered to the Trustee an
     Opinion of Counsel stating that (x) the Company has received from, or there
     has been published by, the Internal Revenue Service a ruling, or (y) since
     the date of this Indenture there has been a change in the applicable
     Federal income tax law, in either case to the effect that, and based
     thereon such opinion shall confirm that, the Holders of the Outstanding
     Securities of such series will not recognize income, gain or loss for
     Federal income tax purposes as a result of such deposit, defeasance and
     discharge to be effected with respect to such Securities and will be
     subject to Federal income tax on the same amounts, in the same manner and
     at the same times as would have been the case if such deposit, defeasance
     and discharge were not to occur.

          (6)  In the case of an election under Section 13.3 with respect to any
     series of Securities, the Company shall have delivered to the Trustee an
     Opinion of Counsel to the effect that the Holders of the Outstanding
     Securities of such series will not recognize income, gain or loss for
     Federal income tax purposes as a result of such deposit and covenant
     defeasance to be effected with respect to such Securities and will be
     subject to Federal income tax on the same amounts, in the same manner and
     at the same times as would have been the case if such deposit and covenant
     defeasance were not to occur.

          (7)  Such defeasance or covenant defeasance shall be effected in
     compliance with any additional terms, conditions or limitations which may
     be imposed on the Company in connection therewith pursuant to Section 3.1.

          (8)  The Company shall have delivered to the Trustee an Officers'
     Certificate and an Opinion of Counsel, each stating that all conditions
     precedent provided for relating to either the defeasance under Section 13.2
     or the covenant defeasance under Section 13.3 (as the case may be) have
     been complied with.

                                      65

 
Section 13.5  Deposited Money and U.S. Government Obligations
              to be Held in Trust; Other Miscellaneous Provisions.

          Subject to the provisions of the last paragraph of Section 10.3, all
money and U.S. Government Obligations (including the proceeds thereof) deposited
with the Trustee (or other qualifying trustee -- collectively, for purposes of
this Section 13.5, the "Trustee") pursuant to Section 13.4 in respect of the
Outstanding Securities of such series shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Securities and this
Indenture, to the payment, either directly or through any Paying Agent (but not
including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of such Securities, of all sums due and to become due
thereon in respect of principal (and premium, if any) and interest, but such
money need not be segregated from other funds except to the extent required by
law.

          The Company shall pay and indemnify the Trustee against any tax, fee
or other charge imposed on or assessed against the money or U.S. Government
Obligations deposited pursuant to Section 13.4 or the principal and interest
received in respect thereof other than any such tax, fee or other charge which
by law is for the account of the Holders of Outstanding Securities.

          Anything herein to the contrary notwithstanding, the Trustee shall
deliver or pay to the Company from time to time upon Company Request any money
or U.S. Government Obligations held by it as provided in Section 13.4 which, in
the opinion of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee, are in
excess of the amount thereof which would then be required to be deposited to
effect an equivalent defeasance or covenant defeasance, as the case may be, with
respect to such Securities.

Section 13.6  Reinstatement.

          If the Trustee or the Paying Agent is unable to apply any money in
accordance with this Article XIII with respect to any Securities by reason of
any order or judgment or any court or governmental authority enjoining,
restraining or otherwise prohibiting such application, then the Company's
obligations under this Indenture and the Securities of such series shall be
revived and reinstated as though no deposit had occurred pursuant to this
Article XIII until such time as the Trustee or Paying Agent is permitted to
apply all such money held in trust pursuant to Section 13.5 with respect to such
Securities in accordance with this Article XIII; provided, however, that if the
Company makes any payment of principal of (and premium, if any) or interest on
any such Security following the reinstatement of its obligations, the Company
shall be subrogated to the rights of the Holders of such Securities to receive
such payment from the money held by the Trustee or the Paying Agent.

                                      66

 
          This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

                               ---------------

                                      67

 
          IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                                    RYERSON TULL, INC.


                                    By:/s/ Robert J. Darnall
                                       ---------------------
                                    Name:  Robert J. Darnall
                                    Title:    Chairman



                                    THE BANK OF NEW YORK, as Trustee


                                    By:     
                                       ----------------------------- 
                                    Name: 
                                         ---------------------------
                                    Title: 
                                          --------------------------

 
          IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                                    RYERSON TULL, INC.


                                    By:
                                       -----------------------------
                                    Name:  Robert J. Darnall
                                    Title:    Chairman



                                    THE BANK OF NEW YORK, as Trustee


                                    By: /s/ Helen M. Cotiaux
                                        ----------------------------
                                    Name: Helen M. Cotiaux
                                         --------------------------- 
                                    Title: Vice President
                                          --------------------------

 
STATE OF ILLINOIS   )
                    ) ss.:
COUNTY OF COOK      )


     On the 27th day of June, 1996, before me personally came Robert J. Darnall,
to me known, who, being by me duly sworn, did depose and say that he is the
Chairman of Ryerson Tull, Inc., one of the corporations described in and which
executed the foregoing instrument; that he knows the seal of said corporation;
that the seal affixed to said instrument is such corporate seal; that it was so
affixed by authority of the Board of Directors of said corporation, and that he
signed his name thereto by like authority.

"OFFICIAL SEAL"
 Jeanne M. Rajala                                    /s/ Jeanne M. Rajala
Notary Public, State of Illinois              --------------------------------
My Commission Expires 06/26/99



STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF NEW YORK       )


     On the______day of_____, 1996, before me personally came _________________,
to me known, who, being by me duly sworn, did depose and say that he is ________
__________of The Bank of New York one of the corporations described in and which
executed the foregoing instrument; that he knows the seal of said corporation;
that the seal affixed to said instrument is such corporate seal; that it was so
affixed by authority of the Board of Directors of said corporation, and that he
signed his name thereto by like authority.





                                              --------------------------------





 
STATE OF __________
                    ) ss.:
COUNTY OF _________


     On the 27th day of June, 1996, before me personally came Robert J. Darnall,
to me known, who, being by me duly sworn, did depose and say that he is the
Chairman of Ryerson Tull, Inc., one of the corporations described in and which
executed the foregoing instrument; that he knows the seal of said corporation;
that the seal affixed to said instrument is such corporate seal; that it was so
affixed by authority of the Board of Directors of said corporation, and that he
signed his name thereto by like authority.

                                                     ---------------------------

STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF NEW YORK       )


     On the 27th day of June, 1996, before me personally came Helen M. Cotiaux,
to me known, who, being by me duly sworn, did depose and say that he is Vice
President of The Bank of New York one of the corporations described in and which
executed the foregoing instrument; that he knows the seal of said corporation;
that the seal affixed to said instrument is such corporate seal; that it was so
affixed by authority of the Board of Directors of said corporation, and that he
signed his name thereto by like authority.



                                    /s/ Timothy J. Shea
                                    ---------------------------------


                                             TIMOTHY J. SHEA
                                    Notary Public, State of New York
                                             No. 01SH5027547
                                      Qualified in New York County
                                     Commission Expires May 8, 1998