Draft of September 10, 1996
===============================================================================






                           IRON MOUNTAIN INCORPORATED



                     __% SENIOR SUBORDINATED NOTES DUE 2006


                                _________________


                                    INDENTURE

                           Dated as of _________, 1996



                                _________________



                  ____________________________________________

                                     Trustee






===============================================================================




NYMAIN01 Doc: 159158_2



                             CROSS-REFERENCE TABLE*

Trust Indenture
  Act Section                                         Indenture Section
310  (a)(1).............................................           7.10
     (a)(2).............................................           7.10
     (a)(3) ............................................           N.A.
     (a)(4).............................................           N.A.
     (a)(5).............................................           7.10
     (b) ...............................................           7.10
     (c) ...............................................           N.A.
311  (a) ...............................................           7.11
     (b) ...............................................           7.11
     (c) ...............................................           N.A.
312  (a)................................................           2.05
     (b)................................................          12.03
     (c) ...............................................          12.03
313  (a) ...............................................           7.06
     (b)(1) ............................................           N.A.
     (b)(2) ............................................      7.06;7.07
     (c) ...............................................     7.06;12.02
     (d)................................................           7.06
314  (a) ...............................................     4.03;12.02
     (b) ...............................................           N.A.
     (c)(1) ............................................          12.04
     (c)(2) ............................................          12.04
     (c)(3) ............................................           N.A.
     (d)................................................           N.A.
     (e)  ..............................................          12.05
     (f)................................................           N.A.
315  (a)................................................           7.01
     (b)................................................     7.05,12.02
     (c)  ..............................................           7.01
     (d)................................................           7.01
     (e)................................................           6.11
316  (a)(last sentence) ................................           2.09
     (a)(1)(A)..........................................           6.05
     (a)(1)(B) .........................................           6.04
     (a)(2) ............................................           N.A.
     (b) ...............................................           6.07
     (c) ...............................................           2.13
317  (a)(1) ............................................           6.08
     (a)(2).............................................           6.09
     (b) ...............................................           2.04
318  (a)................................................          12.01
     (b)................................................           N.A.
     (c)................................................          12.01


N.A. means not applicable.

*This Cross-Reference Table is not part of this Indenture.


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                                       -i-



                                TABLE OF CONTENTS
                                                                            Page
ARTICLE 1
         DEFINITIONS AND INCORPORATION
         BY REFERENCE......................................................   1
         Section 1.01.  Definitions........................................   1
         Section 1.02.  Other Definitions..................................  14
         Section 1.03.  Incorporation by Reference of Trust Indenture Act..  15
         Section 1.04.  Rules of Construction..............................  16

ARTICLE 2
         THE NOTES.........................................................  16
         Section 2.01.  Form and Dating....................................  16
         Section 2.02.  Execution and Authentication.......................  16
         Section 2.03.  Registrar and Paying Agent.........................  17
         Section 2.04.  Paying Agent to Hold Money in Trust................  18
         Section 2.05.  Lists of Holders of the Notes......................  18
         Section 2.06.  Transfer and Exchange..............................  18
         Section 2.07.  Replacement Notes..................................  19
         Section 2.08.  Outstanding Notes..................................  20
         Section 2.09.  Treasury Notes.....................................  20
         Section 2.10.  Temporary Notes....................................  20
         Section 2.11.  Cancellation.......................................  21
         Section 2.12.  Defaulted Interest.................................  21
         Section 2.13.  Record Date........................................  21
         Section 2.14.  CUSIP Number.......................................  21
         Section 2.15.  Computation of Interest............................  22

ARTICLE 3
         REDEMPTION AND OFFERS TO PURCHASE.................................  22
         Section 3.01.  Notices to Trustee.................................  22
         Section 3.02.  Selection of Notes to Be Redeemed..................  22
         Section 3.03.  Notice of Redemption...............................  22
         Section 3.04.  Effect of Notice of Redemption.....................  23
         Section 3.05.  Deposit of Redemption Price........................  23
         Section 3.06.  Notes Redeemed in Part.............................  24
         Section 3.07.  Optional Redemption................................  24
         Section 3.08.  Mandatory Redemption...............................  24
         Section 3.09.  Asset Sale Offers..................................  25

ARTICLE 4
         COVENANTS.........................................................  27
         Section 4.01.  Payment of Notes...................................  27



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                            TABLE OF CONTENTS (cont.)
                                                                            Page

         Section 4.02.  Maintenance of Office or Agency....................  27
         Section 4.03.  Reports............................................  28
         Section 4.04.  Compliance Certificate.............................  28
         Section 4.05.  Taxes..............................................  29
         Section 4.06.  Stay, Extension and Usury Laws.....................  29
         Section 4.07.  Restricted Payments................................  29
         Section 4.08.  Dividend and Other Payment Restrictions Affecting
                        Restricted Subsidiaries............................  31
         Section 4.09.  Incurrence of Indebtedness and Issuance of 
                        Preferred Stock....................................  32
         Section 4.10.  Asset Sales........................................  33
         Section 4.11.  Transactions with Affiliates.......................  34
         Section 4.12.  Liens..............................................  35
         Section 4.13.  Additional Subsidiary Guarantees...................  35
         Section 4.14.  Offer to Purchase Upon Change of Control...........  36
         Section 4.15.  Corporate Existence................................  37
         Section 4.16.  Certain Senior Subordinated Debt...................  38
         Section 4.17.  Designation of unrestricted subsidiaries...........  38

ARTICLE 5
         SUCCESSORS........................................................  39
         Section 5.01.  Merger, Consolidation, or Sale of Assets...........  39
         Section 5.02.  Successor Corporation Substituted..................  39

ARTICLE 6
         CERTAIN DEFAULT PROVISIONS........................................  40
         Section 6.01.  Events of Default..................................  40
         Section 6.02.  Acceleration.......................................  42
         Section 6.03.  Other Remedies.....................................  43
         Section 6.04.  Waiver of Past Defaults............................  43
         Section 6.05.  Control by Majority................................  43
         Section 6.06.  Limitation on Suits................................  43
         Section 6.07.  Rights of Holders of Notes to Receive Payment......  44
         Section 6.08.  Collection Suit by Trustee.........................  44
         Section 6.09.  Trustee May File Proofs of Claim...................  44
         Section 6.10.  Priorities.........................................  45
         Section 6.11.  Undertaking for Costs..............................  45

ARTICLE 7
         TRUSTEE ..........................................................  46
         Section 7.01.  Duties of Trustee..................................  46



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                                      -iii-



                            TABLE OF CONTENTS (cont.)

                                                                            Page

         Section 7.02.  Rights of Trustee.................................... 47
         Section 7.03.  Individual Rights of Trustee......................... 48
         Section 7.04.  Trustee's Disclaimer................................. 48
         Section 7.05.  Notice of Defaults................................... 48
         Section 7.06.  Reports by Trustee to Holders of the Notes........... 48
         Section 7.07.  Compensation and Indemnity........................... 49
         Section 7.08.  Replacement of Trustee............................... 50
         Section 7.09.  Successor Trustee by Merger, etc..................... 51
         Section 7.10.  Eligibility; Disqualification........................ 51
         Section 7.11.  Preferential Collection of Claims Against Company.... 51

ARTICLE 8
         LEGAL DEFEASANCE AND COVENANT DEFEASANCE............................ 51
         Section 8.01.  Option to Effect Legal Defeasance or Covenant
                        Defeasance........................................... 51
         Section 8.02.  Legal Defeasance and Discharge....................... 51
         Section 8.03.  Covenant Defeasance.................................. 52
         Section 8.04.  Conditions to Legal or Covenant Defeasance........... 52
         Section 8.05.  Deposited Money and Government Securities to be Held
                        in Trust; Other Miscellaneous Provisions............. 54
         Section 8.06.  Repayment to Company................................. 54
         Section 8.07.  Reinstatement........................................ 55

ARTICLE 9
         AMENDMENT, SUPPLEMENT AND WAIVER ................................... 55
         Section 9.01.  Without Consent of Holders of Notes.................. 55
         Section 9.02.  With Consent of Holders of Notes..................... 56
         Section 9.03.  Compliance with Trust Indenture Act.................. 57
         Section 9.04.  Revocation and Effect of Consents.................... 57
         Section 9.05.  Notation on or Exchange of Notes..................... 58
         Section 9.06.  Trustee to Sign Amendments, etc...................... 58

ARTICLE 10
         SUBORDINATION....................................................... 58
         Section 10.01. Agreement to Subordinate............................. 58
         Section 10.02. Liquidation; Dissolution; Bankruptcy................. 58
         Section 10.03. Default on Designated Senior Debt.................... 59
         Section 10.04. Acceleration of Notes................................ 60
         Section 10.05. When Distribution Must be Paid Over.................. 60
         Section 10.06. Notice By Company.................................... 60
         Section 10.07. Subrogation.......................................... 61



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                            TABLE OF CONTENTS (cont.)

                                                                            Page


         Section 10.08. Relative Rights....................................  61
         Section 10.09. Subordination May Not Be Impaired by Company.......  61
         Section 10.10. Distribution or Notice to Representative...........  61
         Section 10.11. Rights of Trustee and Paying Agent.................  62
         Section 10.12. Authorization to Effect Subordination..............  62
         Section 10.13. Amendments.........................................  62

ARTICLE 11
         SUBSIDIARY GUARANTEES.............................................  62
         Section 11.01. Subsidiary Guarantee...............................  62
         Section 11.02. Subordination......................................  64
         Section 11.03. Liquidation; Dissolution; Bankruptcy...............  64
         Section 11.04. Default on Senior Debt of the Guarantor............  65
         Section 11.05. Acceleration of Notes..............................  66
         Section 11.06. When Distribution Must Be Paid Over................  66
         Section 11.07. Notice by a Guarantor..............................  66
         Section 11.08. Subrogation........................................  66
         Section 11.09. Relative Rights....................................  67
         Section 11.10. Subordination May Not Be Impaired By Any Guarantor.  67
         Section 11.11. Distribution or Notice to Representative...........  67
         Section 11.12. Rights of Trustee and Paying Agent.................  68
         Section 11.13. Authorization to Effect Subordination..............  68
         Section 11.14. Amendments.........................................  68
         Section 11.15. Limitation of Guarantor's Liability................  68
         Section 11.16. Restricted Subsidiaries May Consolidate, etc., 
                        on Certain Term....................................  69
         Section 11.17. Releases Following Sale of Assets or Designation
                        as Unrestricted Subsidiary.........................  69

ARTICLE 12
         MISCELLANEOUS.....................................................  70
         Section 12.01.  Trust Indenture Act Controls......................  70
         Section 12.02.  Notices...........................................  70
         Section 12.03.  Communication by Holders of Notes with Other 
                         Holders of Notes..................................  71
         Section 12.04.  Certificate and Opinion as to Conditions Precedent  71
         Section 12.05.  Statements Required in Certificate or Opinion.....  71
         Section 12.06.  Rules by Trustee and Agents.......................  72
         Section 12.07.  No Personal Liability of Directors, Officers, 
                         Employees and Stockholders........................  72



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                            TABLE OF CONTENTS (cont.)
                                                                            Page

         Section 12.08.  Governing Law....................................... 72
         Section 12.09.  No Adverse Interpretation of Other Agreements....... 72
         Section 12.10.  Successors.......................................... 72
         Section 12.11.  Severability........................................ 73
         Section 12.12.  Counterpart Originals............................... 73
         Section 12.13.  Table of Contents, Headings, etc.................... 73


                                            EXHIBITS

         Exhibit A       FORM OF NOTE
         Exhibit B       FORM OF SUPPLEMENTAL INDENTURE
         Exhibit C       FORM OF NOTATION ON NOTE RELATING TO
                         GUARANTEE



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                                      -vi-



                  INDENTURE dated as of ________, 1996 among Iron Mountain
Incorporated, a Delaware corporation (the "Company") and First Bank National
Association, as trustee (the "Trustee").

                  The Company and the Trustee agree as follows for the benefit
of each other and for the equal and ratable benefit of the Holders of the __%
Senior Subordinated Notes due 2006:


                                    ARTICLE 1
                          DEFINITIONS AND INCORPORATION
                                  BY REFERENCE

SECTION 1.01.     DEFINITIONS.

                  "Acquired Debt" means, with respect to any specified Person,
(a) Indebtedness of any other Person existing at the time such other Person
merged with or into or became a Subsidiary of such specified Person, including
Indebtedness incurred in connection with, or in contemplation of, such other
Person merging with or into or becoming a Subsidiary of such specified Person
and (b) Indebtedness encumbering any asset acquired by such specified Person.

                  "Acquisition EBITDA" means, as of any date of determination,
with respect to an Acquisition EBITDA Entity, the sum of (a) EBITDA of such
Acquisition EBITDA Entity for its last fiscal quarter for which financial
statements are available at such date of determination, multiplied by four (or
if such quarterly statements are not available, EBITDA for the most recent
fiscal year for which financial statements are available), plus (b) projected
quantifiable improvements in operating results (on an annualized basis) due to
cost reductions calculated in good faith by the Company or one of its Restricted
Subsidiaries, as certified by an Officers' Certificate filed with the Trustee,
without giving effect to any operating losses of the acquired Person.

                  "Acquisition EBITDA Entity" means, as of any date of
determination, a business or Person (a) which has been acquired by the Company
or one of its Restricted Subsidiaries and with respect to which financial
results on a consolidated basis with the Company have not been made available
for an entire fiscal quarter or (b) which is to be acquired in whole or in part
with Indebtedness, the incurrence of which will require the calculation on such
date of the Acquisition EBITDA of such Acquisition EBITDA Entity for purposes of
Section 4.09 hereof.

                  "Adjusted EBITDA" means, as of any date of determination and
without duplication, the sum of (a) EBITDA of the Company and its Restricted
Subsidiaries for the most recent fiscal quarter for which internal financial
statements are available at such date of determination, multiplied by four, and
(b) Acquisition EBITDA of each business or Person that is an Acquisition EBITDA
Entity as of such date of determination, multiplied by a fraction, the numerator
of which is three minus the number of months (and/or any portion thereof ) in
such most recent fiscal quarter for which the financial results of such
Acquisition EBITDA Entity are included in the EBITDA of the Company and its
Restricted Subsidiaries under clause (a) above, and (ii) the



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denominator of which is three. The effects of unusual or non-recurring items in
respect of the Company, a Restricted Subsidiary or an Acquisition EBITDA Entity
occurring in any period shall be excluded in the calculation of Adjusted EBITDA.

                  "Affiliate" of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person. For purposes of this definition,
"control" (including, with correlative meanings, the terms "controlling,"
"controlled by" and "under common control with"), as used with respect to any
Person, will mean the possession, directly or indirectly, of the power to direct
or cause the direction of the management or policies of such Person, whether
through the ownership of voting securities, by agreement or otherwise; provided,
however, that beneficial ownership of 10% or more of the voting securities of a
Person shall be deemed to be control.

                  "Agent" means any Registrar, Paying Agent or co-registrar.

                  "Bankruptcy Law" means Title 11, U.S. Code or any similar 
federal or state law for the relief of debtors.

                  "Board of Directors" means the Board of Directors of the
Company, or any authorized committee of the Board of Directors.

                  "Business Day" means any day other than a Legal Holiday.

                  "Capital Lease Obligation" means, at the time any
determination thereof is to be made, the amount of the liability in respect of a
capital lease that would at such time be so required to be capitalized on the
balance sheet in accordance with GAAP.

                  "Capital Stock" means any and all shares, interests,
participations, rights or other equivalents (however designated) of corporate
stock, including, without limitation, with respect to partnerships, partnership
interests (whether general or limited) and any other interest or participation
that confers on a Person the right to receive a share of the profits and losses
of, or distributions of assets of, such partnership.

                  "Cash Equivalents" means (a) securities with maturities of one
year or less from the date of acquisition, issued, fully guaranteed or insured
by the United States Government or any agency thereof, (b) certificates of
deposit, time deposits, overnight bank deposits, bankers acceptances and
repurchase agreements issued by a Qualified Issuer having maturities of 270 days
or less from the date of acquisition, (c) commercial paper of an issuer rated at
least A-2 by Standard & Poor's Rating Group, a division of McGraw Hill, Inc., or
P-2 by Moody's Investors Service, or carrying an equivalent rating by a
nationally recognized rating agency if both of the two named rating agencies
cease publishing ratings of investments and having maturities of 270 days or
less from the date of acquisition, (d) money market accounts or funds with or
issued by Qualified Issuers and (e) Investments in money market funds
substantially all of the assets of which are comprised of securities and other
obligations of the types described in clauses (a) through (c) above.


NYMAIN01 Doc: 159158_2
                                        2



                  "Change of Control" means the occurrence of any of the 
                  following events:

                           (a) any "person" or "group" (as such terms are used
                  in Sections 13(d) and 14(d) of the Exchange Act), other than
                  the Principal Stockholders (or any of them), is or becomes the
                  "beneficial owner" (as defined in Rules 13d-3 and 13d-5 under
                  the Exchange Act), directly or indirectly, of more than a
                  majority of the voting power of all classes of Voting Stock of
                  the Company;

                           (b) the Company consolidates with, or merges with or
                  into, another Person or conveys, transfers, leases or
                  otherwise disposes of all or substantially all of its assets
                  to any Person, or any Person consolidates with, or merges with
                  or into, the Company, in any such event pursuant to a
                  transaction in which the outstanding Voting Stock of the
                  Company is converted into or exchanged for cash, securities or
                  other property, other than any such transaction where (i) the
                  outstanding Voting Stock of the Company is not converted or
                  exchanged at all (except to the extent necessary to reflect a
                  change in the jurisdiction of incorporation) or is converted
                  into or exchanged for (A) Voting Stock (other than
                  Disqualified Stock) of the surviving or transferee Person or
                  (B) cash, securities and other property (other than Capital
                  Stock described in the foregoing clause (A)) of the surviving
                  or transferee Person in an amount that could be paid as a
                  Restricted Payment pursuant to Section 4.07 hereof and (ii)
                  immediately after such transaction, no "person" or "group" (as
                  such terms are used in Sections 13(d) and 14(d) of the
                  Exchange Act), other than the Principal Stockholders (or any
                  of them), is the "beneficial owner" (as defined in Rules 13d-3
                  and 13d-5 under the Exchange Act), directly or indirectly, of
                  more than a majority of the total outstanding Voting Stock of
                  the surviving or transferee Person;

                           (c) during any consecutive two-year period,
                  individuals who at the beginning of such period constituted
                  the Board of Directors (together with any new directors whose
                  election to such Board of Directors, or whose nomination for
                  election by the stockholders of the Company, was approved by a
                  vote of 662/3% of the directors then still in office who were
                  either directors at the beginning of such period or whose
                  election or nomination for election was previously so
                  approved) cease for any reason to constitute a majority of the
                  Board of Directors then in office; or

                           (d) the Company is liquidated or dissolved or adopts
                  a plan of liquidation or dissolution other than in a
                  transaction which complies with the provisions described under
                  "Consolidation, Merger and Sale of Assets."

                  "Chrysler Notes" means the 13.42% Senior Subordinated Notes 
due December 41, 2000 in the original principal amount of $15.0 million issued 
by Iron Mountain Information Services, Inc. to Chrysler Capital Corporation.


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                                        3




                  "Company" means the party named as such in this Indenture
until a successor replaces it pursuant to this Indenture and thereafter means
the successor.

                  "Consolidated Adjusted Net Income" means, for any period, the
net income (or net loss) of the Company and its Restricted Subsidiaries for such
period as determined on a consolidated basis in accordance with GAAP, adjusted
to the extent included in calculating such net income or loss by excluding (a)
any net after-tax extraordinary gains or losses (less all fees and expenses
relating thereto), (b) any net after-tax gains or losses (less all fees and
expenses relating thereto) attributable to Asset Sales, (c) the portion of net
income (or loss) of any Person (other than the Company or a Restricted
Subsidiary), including Unrestricted Subsidiaries, in which the Company or any
Restricted Subsidiary has an ownership interest, except to the extent of the
amount of dividends or other distributions actually paid to the Company or any
Restricted Subsidiary in cash dividends or distributions by such Person during
such period, and (d) the net income (or loss) of any Person combined with the
Company or any Restricted Subsidiary on a "pooling of interests" basis
attributable to any period prior to the date of combination.

                  "Consolidated Income Tax Expense" means, for any period, the
provision for federal, state, local and foreign income taxes of the Company and
its Restricted Subsidiaries for such period as determined on a consolidated
basis in accordance with GAAP.

                  "Consolidated Interest Expense" means, for any period, without
duplication, the sum of (a) the amount which, in conformity with GAAP, would be
set forth opposite the caption "interest expense" (or any like caption) on a
consolidated statement of operations of the Company and its Restricted
Subsidiaries for such period, including, without limitation, (i) amortization of
debt discount, (ii) the net cost of interest rate contracts (including
amortization of discounts), (iii) the interest portion of any deferred payment
obligation, (iv) amortization of debt issuance costs and (v) the interest
component of Capital Lease Obligations of the Company and its Restricted
Subsidiaries, plus (b) all interest on any Indebtedness of any other Person
guaranteed and paid by the Company or any of its Restricted Subsidiaries;
provided, however, that Consolidated Interest Expense will not include any gain
or loss from extinguishment of debt, including write-off of debt issuance costs.

                  "Consolidated Non-Cash Charges" means, for any period, the
aggregate depreciation, amortization and other non-cash expenses of the Company
and its Restricted Subsidiaries reducing Consolidated Adjusted Net Income for
such period, determined on a consolidated basis in accordance with GAAP
(excluding any such non-cash charge that requires an accrual of or reserve for
cash charges for any future period).

                  "Corporate Trust Office of the Trustee" will be at the address
of the Trustee specified in Section 12.02 hereof or such other address as to
which the Trustee may give notice to the Company.

                  "Credit Agent" means The Chase Manhattan Bank, in its capacity
as administrative agent for the lenders party to the Credit Agreement, or any
successor or successors party thereto.


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                                        4




                  "Credit Agreement" means the Credit Agreement dated as of
December 10, 1990, as amended and restated as of April 15, 1993, and as further
amended and restated as of January 31, 1995, among the Company, the lenders
party thereto and the Credit Agent, as the same may be refunded, replaced or
refinanced by the New Credit Facility, and in each case as amended, restated,
supplemented, modified, renewed, refunded, increased, extended, replaced or
refinanced from time to time.

                  "Custodian" means any receiver, trustee, assignee, liquidator
or similar official under any Bankruptcy Law.

                  "Default" means any event that is or with the passage of time
or the giving of notice or both would be an Event of Default.

                  "Depositary" means, with respect to Notes issuable in whole or
in part in the form of one or more Global Notes, a clearing agency registered
under the Exchange Act that is designated to act as Depositary for such Notes as
contemplated by Section 2.01.

                  "Designated Senior Debt" means (a) Senior Bank Debt and (b)
other Senior Debt the principal amount of which is $50.0 million or more at the
date of designation by the Company in a written instrument delivered to the
Trustee; provided that Senior Debt designated as Designated Senior Debt pursuant
to clause (b) shall cease to be Designated Senior Debt at any time that the
aggregate principal amount thereof outstanding is $10.0 million or less.

                  "Disqualified Stock" means any Capital Stock which, 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, pursuant to a sinking fund obligation or otherwise, or
is redeemable at the option of the Holder thereof, in whole or in part, in each
case on or prior to the stated maturity of the Notes.

                  "distribution" means, for purposes of Articles 10 and 11, a
distribution consisting of cash, securities or other property, by set-off or
otherwise.

                  "Dollars" and "$" mean lawful money of the United States of 
America.

                  "EBITDA" means for any period Consolidated Adjusted Net Income
for such period increased by (a) Consolidated Interest Expense for such period,
plus (b) Consolidated Income Tax Expense for such period, plus (c) Consolidated
Non-Cash Charges for such period.

                  "Equity Interests" means Capital Stock and all warrants,
options or other rights to acquire Capital Stock (but excluding any debt
security that is convertible into, or exchangeable for, Capital Stock).

                  "Equity Proceeds" means (a) with respect to Equity Interests
(or debt securities converted into Equity Interests) issued or sold for cash
Dollars, the aggregate amount of such cash Dollars and (b) with respect to
Equity Interests (or debt securities converted into Equity Interests)


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                                        5



issued or sold for any consideration other than cash Dollars, the aggregate
Market Price thereof computed on the date of the issuance or sale thereof.

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

                  "Excluded Restricted Subsidiary" means any Wholly Owned
Restricted Subsidiary principally engaged in the records management business
domiciled outside the United States of America if the issuance of a Subsidiary
Guarantee by such Subsidiary would, as determined in a resolution of the Board
of Directors set forth in an Officers' Certificate delivered to the Trustee,
create a tax disadvantage that is material in relation to the aggregate amount
of the Company's and any Restricted Subsidiary's Investment or proposed
Investment therein.

                  "Existing Indebtedness" means Indebtedness of the Company and
its Subsidiaries (other than under the Credit Agreement) in existence on the
date of this Indenture, until such amounts are repaid.

                  "GAAP" means generally accepted accounting principles set
forth in the opinions and pronouncements of the Accounting Principles Board of
the American Institute of Certified Public Accountants and statements and
pronouncements of the Financial Accounting Standards Board or in such other
statements by such other entity as have been approved by a significant segment
of the accounting profession, which are in effect on the date of this Indenture.

                  "Global Note" means a Note that evidences all or part of the
Notes and is authenticated and delivered to, and registered in the name of, the
Depositary for the Notes or a nominee thereof.

                  "Government Securities" means direct obligations of, or
obligations guaranteed by, the United States of America for the payment of which
guarantee or obligations the full faith and credit of the United States of
America is pledged.

                  "Guarantee" means, as applied to any obligation, (a) a
guarantee (other than by endorsement of negotiable instruments for collection in
the ordinary course of business), direct or indirect, in any manner, of any part
or all of such obligation and (b) an agreement, direct or indirect, contingent
or otherwise, the practical effect of which is to assure in any way the payment
or performance (or payment of damages in the event of non-performance) of all or
any part of such obligation, including, without limiting the foregoing, the
obligation to reimburse amounts drawn down under letters of credit securing such
obligations.

                  "Hedging Obligations" means, with respect to any Person, the
obligations of such Person under (a) interest rate swap agreements, interest
rate cap agreements and interest rate collar agreements and (b) other agreements
or arrangements designed to protect such Person against fluctuations in interest
rates.

                  "Holder" means a Person in whose name a Note is registered.


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                  "Indebtedness" 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, (a) every obligation of such Person for
money borrowed, (b) every obligation of such Person evidenced by bonds,
debentures, notes or other similar instruments, (c) every reimbursement
obligation of such Person with respect to letters of credit, bankers'
acceptances or similar facilities issued for the account of such Person, (d)
every obligation of such Person issued or assumed as the deferred purchase price
of property or services, (e) every Capital Lease Obligation and every obligation
of such Person in respect of Sale and Leaseback Transactions that would be
required to be capitalized on the balance sheet in accordance with GAAP, (f) all
Disqualified Stock of such Person valued at the greater of its voluntary or
involuntary maximum fixed repurchase price, plus accrued and unpaid dividends
(unless included in such maximum repurchase price), (g) all obligations of such
Person under or with respect to Hedging Obligations which would be required to
be reflected on the balance sheet as a liability of such Person in accordance
with GAAP and (h) every obligation of the type referred to in clauses (a)
through (g) of another Person and dividends of another Person the payment of
which, in either case, such Person has guaranteed. For purposes of this
definition, the "maximum fixed repurchase price" of any Disqualified Stock that
does not have a fixed repurchase price will be calculated in accordance with the
terms of such Disqualified Stock as if such Disqualified Stock were repurchased
on any date on which Indebtedness is required to be determined pursuant to this
Indenture, and if such price is based upon, or measured by, the fair market
value of such Disqualified Stock, such fair market value will be determined in
good faith by the board of directors of the issuer of such Disqualified Stock.
Notwithstanding the foregoing, trade accounts payable and accrued liabilities
arising in the ordinary course of business and any liability for federal, state
or local taxes or other taxes owed by such Person will not be considered
Indebtedness for purposes of this definition. The amount outstanding at any time
of any Indebtedness issued with original issue discount is the aggregate
principal amount at maturity of such Indebtedness, less the remaining
unamortized portion of the original issue discount of such Indebtedness at such
time, as determined in accordance with GAAP.

                  "Indenture" means this Indenture, as amended or supplemented 
from time to time.

                  "Investments" means, with respect to any Person, all
investments by such Person in other Persons (including Affiliates) in the forms
of loans (including Guarantees), advances or capital contributions (excluding
commission, travel and similar advances to officers and employees made in the
ordinary course of business), purchases or other acquisitions for consideration
of Indebtedness, Equity Interests or other securities and all other items that
are or would be classified as investments on a balance sheet prepared in
accordance with GAAP.

                  "Issuance Date" means the closing date for the sale and 
original issuance of the Notes.

                  "Legal Holiday" means a Saturday, a Sunday or a day on which
banking institutions in the City of New York or at a place of payment are
authorized by law, regulation or executive order to remain closed. If a payment
date is a Legal Holiday at a place of payment, payment may be made at that place
on the next succeeding day that is not a Legal Holiday, and no interest will
accrue for the intervening period.


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                                        7




                  "Leverage Ratio" means, at any date, the ratio of (a) the
aggregate principal amount of Indebtedness of the Company and its Restricted
Subsidiaries outstanding as of the most recent available quarterly or annual
balance sheet to (b) Adjusted EBITDA, after giving pro forma effect, without
duplication, to (i) the incurrence, repayment or retirement of any Indebtedness
by the Company or its Restricted Subsidiaries since the last day of the most
recent full fiscal quarter of the Company, (ii) if the Leverage Ratio is being
determined in connection with the incurrence of Indebtedness by the Company or a
Restricted Subsidiary, such Indebtedness to be incurred, and (iii) the
Indebtedness to be incurred in connection with the acquisition of any
Acquisition EBITDA Entity.

                  "Lien" means, with respect to any asset, any mortgage, lien,
pledge, charge, security interest or encumbrance of any kind in respect of such
asset, whether or not filed, recorded or otherwise perfected under applicable
law (including any conditional sale or other title retention agreement, any
lease in the nature thereof, any option or other agreement to sell or give a
security interest in and any filing of or agreement to give any financing
statement under the Uniform Commercial Code, or equivalent statutes, of any
jurisdiction).

                  "Market Price" means, (a) with respect to the calculation of
Equity Proceeds from the issuance or sale of debt securities which have been
converted into Equity Interests, the value received upon the original issuance
or sale of such converted debt securities, as determined reasonably and in good
faith by the Board of Directors, and (b) with respect to the calculation of
Equity Proceeds from the issuance or sale of Equity Interests, the average of
the daily closing prices for such Equity Interests for the 20 consecutive
trading days preceding the date of such computation. The closing price for each
day will be (a) if such Equity Interests are then listed or admitted to trading
on the New York Stock Exchange, the closing price on the NYSE Consolidated Tape
(or any successor consolidated tape reporting transactions on the New York Stock
Exchange) or, if such composite tape is not in use or does not report
transactions in such Equity Interests, or if such Equity Interests are listed on
a stock exchange other than the New York Stock Exchange (including for this
purpose the Nasdaq National Market), the last reported sale price regular way
for such day, or in case no such reported sale takes place on such day, the
average of the closing bid and asked prices regular way for such day, in each
case on the principal national securities exchange on which such Equity
Interests are listed or admitted to trading (which will be the national
securities exchange on which the greatest number of such Equity Interests have
been traded during such 20 consecutive trading days), or (b) if such Equity
Interests are not listed or admitted to trading on any such exchange, the
average of the closing bid and asked prices thereof in the over-the-counter
market as reported by the National Association of Securities Dealers Automated
Quotation System or any successor system, or if not included therein, the
average of the closing bid and asked prices thereof furnished by two members of
the National Association of Securities Dealers selected reasonably and in good
faith by the Board of Directors for that purpose. In the absence of one or more
such quotations, the Market Price for such Equity Interests will be determined
reasonably and in good faith by the Board of Directors.

                  "Net Proceeds" means the aggregate cash proceeds received by
the Company or any of its Restricted Subsidiaries in respect of any Asset Sale,
which amount is equal to the excess, if any, of (a) the cash received by the
Company or such Restricted Subsidiary (including any cash


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payments received by way of deferred payment pursuant to, or monetization of, a
note or installment receivable or otherwise, but only as and when received) in
connection with such disposition over (b) the sum of (i) the amount of any
Indebtedness which is secured by such asset and which is required to be repaid
in connection with the disposition thereof, plus (ii) the reasonable
out-of-pocket expenses incurred by the Company or such Restricted Subsidiary, as
the case may be, in connection with such disposition or in connection with the
transfer of such amount from such Restricted Subsidiary to the Company, plus
(iii) provisions for taxes, including income taxes, attributable to the
disposition of such asset or attributable to required prepayments or repayments
of Indebtedness with the proceeds thereof, plus (iv) if the Company does not
first receive a transfer of such amount from the relevant Restricted Subsidiary
with respect to the disposition of an asset by such Restricted Subsidiary and
such Restricted Subsidiary intends to make such transfer as soon as practicable,
the out-of-pocket expenses and taxes that the Company reasonably estimates will
be incurred by the Company or such Restricted Subsidiary in connection with such
transfer at the time such transfer is expected to be received by the Company
(including, without limitation, withholding taxes on the remittance of such
amount).

                  "Notes" means the __% Senior Subordinated Notes due 2006, as
amended or supplemented from time to time pursuant to the terms hereof, that are
issued under this Indenture.

                  "Obligations" means any principal, interest (including
post-petition interest, whether or not allowed as a claim in any proceeding),
penalties, fees, costs, expenses, indemnifications, reimbursements, damages and
other liabilities payable under or in connection with any Indebtedness.

                  "Officer" means, with respect to any Person, the Chairman of
the Board, the Chief Executive Officer, the President, the Chief Operating
Officer, the Chief Financial Officer, the Treasurer, any Assistant Treasurer,
the Controller, the Secretary or any Vice-President of such Person.

                  "Officers' Certificate" means a certificate signed, unless
otherwise specified, by any two of the Chairman of the Board, a Vice Chairman of
the Board, the President, the Chief Financial Officer, the Controller or an
Executive Vice President of the Company, and delivered to the Trustee, that
meets the requirements of Section 12.05 hereof.

                  "Opinion of Counsel" means an opinion from legal counsel who
is reasonably acceptable to the Trustee, that meets the requirements of Section
12.05 hereof. The counsel may be an employee of or counsel to the Company, any
Subsidiary of the Company or the Trustee.

                  "Permitted Investments" means (a) any Investments in the
Company or in a Restricted Subsidiary (other than an Excluded Restricted
Subsidiary) of the Company, including without limitation the Guarantee of
Indebtedness permitted under Section 4.09 hereof; (b) any Investments in Cash
Equivalents; (c) Investments by the Company or any Restricted Subsidiary of the
Company in a Person, if as a result of such Investment (i) such Person becomes a
Restricted Subsidiary (other than an Excluded Restricted Subsidiary) of the
Company or (ii) such Person is merged, consolidated or amalgamated with or into,
or transfers or conveys substantially all of its


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assets to, or is liquidated into, the Company or a Restricted Subsidiary (other
than an Excluded Restricted Subsidiary) of the Company; (d) Investments in
assets (including accounts and notes receivable) owned or used in the ordinary
course of business; (e) Investments for any purpose related to the Company's
records management business in an aggregate outstanding principal amount not to
exceed $10.0 million; and (f) Investments by the Company or a Restricted
Subsidiary (other than an Excluded Restricted Subsidiary) in one or more
Excluded Restricted Subsidiaries, the aggregate outstanding amount of which does
not exceed 10% of the consolidated assets of the Company and its Restricted
Subsidiaries.

                  "Permitted Liens" means:

                           (a) Liens existing as of the Issuance Date;

                           (b) Liens on property or assets of the Company or 
                  any Restricted Subsidiary securing Senior Debt;

                           (c) Liens on any property or assets of a Restricted 
                  Subsidiary granted in favor of the Company or any Wholly 
                  Owned Restricted Subsidiary;

                           (d) Liens securing the Notes or the Subsidiary 
                  Guarantees;

                           (e) any interest or title of a lessor under any
                  Capital Lease Obligation or Sale and Leaseback Transaction so
                  long as the Indebtedness, if any, secured by such Lien does
                  not exceed the principal amount of Indebtedness permitted
                  under Section 4.09 hereof;

                           (f) Liens securing Acquired Debt created prior to
                  (and not in connection with or in contemplation of) the
                  incurrence of such Indebtedness by the Company or any
                  Restricted Subsidiary; provided that such Lien does not extend
                  to any property or assets of the Company or any Restricted
                  Subsidiary other than the assets acquired in connection with
                  the incurrence of such Acquired Debt;

                           (g) Liens securing Hedging Obligations permitted to 
                  be incurred pursuant to clause (g) of Section 4.09 hereof;

                           (h) Liens arising from purchase money mortgages and
                  purchase money security interests, or in respect of the
                  construction of property or assets, incurred in the ordinary
                  course of the business of the Company or a Restricted
                  Subsidiary; provided that (i) the related Indebtedness is not
                  secured by any property or assets of the Company or any
                  Restricted Subsidiary other than the property and assets so
                  acquired or constructed and (ii) the Lien securing such
                  Indebtedness is created within 60 days of such acquisition or
                  construction;

                           (i) statutory Liens or landlords' and carriers', 
                  warehousemen's, mechanics', suppliers', materialmen's, 
                  repairmen's or other like Liens arising in


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                  the ordinary course of business and with respect to amounts
                  not yet delinquent or being contested in good faith by
                  appropriate proceedings, if a reserve or other appropriate
                  provision, if any, as is then required in conformity with GAAP
                  has been made therefor;

                           (j) Liens for taxes, assessments, government charges
                  or claims with respect to amounts not yet delinquent or that
                  are being contested in good faith by appropriate proceedings
                  diligently conducted, if a reserve or other appropriate
                  provision, if any, as is required in conformity with GAAP has
                  been made therefor;

                           (k) Liens incurred or deposits made to secure the
                  performance of tenders, bids, leases, statutory obligations,
                  surety and appeal bonds, government contracts, performance
                  bonds and other obligations of a like nature incurred in the
                  ordinary course of business (other than contracts for the
                  payment of money);

                           (l) easements, rights-of-way, restrictions and other
                  similar charges or encumbrances not interfering in any
                  material respect with the business of the Company or any
                  Restricted Subsidiary incurred in the ordinary course of
                  business;

                           (m) Liens arising by reason of any judgment, decree
                  or order of any court so long as such Lien is adequately
                  bonded and any appropriate legal proceedings that may have
                  been duly initiated for the review of such judgment, decree or
                  order shall not have been finally terminated or the period
                  within which such proceedings may be initiated shall not have
                  expired;

                           (n) Liens arising under options or agreements to 
                  sell assets;

                           (o) other Liens securing obligations incurred in the
                  ordinary course of business, which obligations do not exceed
                  $1.0 million in the aggregate at any one time outstanding; 
                  and

                           (p) any extension, renewal or replacement, in whole
                  or in part, of any Lien described in the foregoing clauses (a)
                  through (o); provided that any such extension, renewal or
                  replacement does not extend to any additional property or
                  assets.

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

                  "Principal Stockholders" means each of Vincent J. Ryan, 
Schooner Capital Corporation, C. Richard Reese, Eugene B. Doggett, and their 
respective Affiliates.


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                                       11



                  "Qualified Equity Offering" means an offering of Capital
Stock, other than Disqualified Stock, of the Company for Dollars, whether
registered or exempt from registration under the Securities Act.

                  "Qualified Issuer" means (a) any lender party to the Credit
Agreement or (b) any commercial bank (i) which has capital and surplus in excess
of $500,000,000 and (ii) the outstanding short-term debt securities of which are
rated at least A-2 by Standard & Poor's Rating Group, a division of McGraw-Hill,
Inc. or at least P-2 by Moody's Investors Service, or carry an equivalent rating
by a nationally recognized rating agency if both of the two named rating
agencies cease publishing ratings of investments.

                  "Qualifying Sale and Leaseback Transaction" means any Sale and
Leaseback Transaction between the Company or any of its Restricted Subsidiaries
and any bank, insurance company or other lender or investor providing for the
leasing to the Company or such Restricted Subsidiary of any property (real or
personal) which has been or is to be sold or transferred by the Company or such
Restricted Subsidiary to such lender or investor or to any Person to whom funds
have been or are to be advanced by such lender or investor and where the
property in question has been constructed or acquired after the date of this
Indenture.

                  "Refinancing Indebtedness" means new Indebtedness incurred or
given in exchange for, or the proceeds of which are used to repay, redeem,
defease, extend, refinance, renew, replace or refund, other Indebtedness;
provided, however, that (a) the principal amount of such new Indebtedness shall
not exceed the principal amount of Indebtedness so repaid, redeemed, defeased,
extended, refinanced, renewed, replaced or refunded (plus the amount of fees,
premiums, consent fees, prepayment penalties and expenses incurred in connection
therewith); (b) such Refinancing Indebtedness shall have a Weighted Average Life
to Maturity equal to or greater than the Weighted Average Life to Maturity of
the Indebtedness so repaid, redeemed, defeased, extended, refinanced, renewed,
replaced or refunded or shall mature after _______, 2006; (c) to the extent such
Refinancing Indebtedness refinances Indebtedness that has a final maturity date
occurring after ________, 2006, such new Indebtedness shall have a final
scheduled maturity not earlier than the final scheduled maturity of the
Indebtedness so repaid, redeemed, defeased, extended, refinanced, renewed,
replaced or refunded and shall not permit redemption at the option of the holder
earlier than the earliest date of redemption at the option of the holder of the
Indebtedness so repaid, redeemed, defeased, extended, refinanced, renewed,
replaced or refunded; (d) to the extent such Refinancing Indebtedness refinances
Indebtedness subordinate to the Notes, such Refinancing Indebtedness shall be
subordinated in right of payment to the Notes and to the extent such Refinancing
Indebtedness refinances Notes or Indebtedness pari passu with the Notes, such
Refinancing Indebtedness shall be pari passu with or subordinated in right of
payment to the Notes, in each case on terms at least as favorable to the holders
of Notes as those contained in the documentation governing the Indebtedness so
repaid, redeemed, defeased, extended, refinanced, renewed, replaced or refunded;
and (e) with respect to Refinancing Indebtedness incurred by a Restricted
Subsidiary, such Refinancing Indebtedness shall rank no more senior, and shall
be at least as subordinated, in right of payment to the Subsidiary Guarantee of
such Restricted Subsidiary as the Indebtedness being extended, refinanced,
renewed, replaced or refunded.


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                                       12



                  "Representative" means, for purposes of Articles 10 and 11,
the Credit Agent or other agent, trustee or representative for any Senior Debt
of the Company or, with respect to any Restricted Subsidiary, for any Senior
Debt of such Restricted Subsidiary.

                  "Responsible Officer" when used with respect to the Trustee,
means any officer within the Corporate Trust Administration of the Trustee (or
any successor group of the Trustee) or any other officer of the Trustee
customarily performing functions similar to those performed by any of the above
designated officers and also means, with respect to a particular corporate trust
matter, any other officer to whom such matter is referred because of his
knowledge of and familiarity with the particular subject.

                  "Restricted Subsidiary" means (a) each direct or indirect
Subsidiary of the Company existing on the date of this Indenture and (b) any
other direct or indirect Subsidiary of the Company formed, acquired or existing
after the date of this Indenture, in each case which is not designated by the
Board of Directors as an "Unrestricted Subsidiary."

                  "SEC" means the Securities and Exchange Commission.

                  "Securities Act" means the Securities Act of 1933, as amended.

                  "Sale and Leaseback Transaction" means any transaction or
series of related transactions pursuant to which a Person sells or transfers any
property or asset in connection with the leasing, or the resale against
installment payments, of such property or asset to the seller or transferor.

                  "Senior Bank Debt" means all Obligations outstanding under or
in connection with the Credit Agreement (including Guarantees of such
Obligations by Subsidiaries of the Company).

                  "Senior Debt" means (a) the Senior Bank Debt and (b) any other
Indebtedness permitted to be incurred by the Company or any Restricted
Subsidiary, as the case may be, under the terms of this Indenture, unless the
instrument under which such Indebtedness is incurred expressly provides that it
is on a parity with or subordinated in right of payment to the Notes.
Notwithstanding anything to the contrary in the foregoing, Senior Debt shall not
include (i) any liability for federal, state, local or other taxes owed or owing
by the Company, (ii) any Indebtedness of the Company to any of its Subsidiaries
or other Affiliates, (iii) any trade payables or (iv) any Indebtedness that is
incurred in violation of this Indenture.

                  "Significant Subsidiary" means any Subsidiary that would be a
"significant subsidiary" as defined in Article 1, Rule 1-02 of Regulation S-X,
promulgated pursuant to the Securities Act, as such Regulation is in effect on
the date hereof.

                  "Subsidiary" means, with respect to any Person, any
corporation, association or other business entity of which more than 50% of the
total voting power of shares of Capital Stock entitled (without regard to the
occurrence of any contingency) to vote in the election of directors,


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                                       13



managers or trustees thereof is at the time owned or controlled, directly or
indirectly, by such Person or one or more of the other Subsidiaries of such
Person or a combination thereof.

                  "Subsidiary Guarantee" means a Guarantee of a Guarantor 
pursuant to Article 11 hereof.

                  "TIA" means the Trust Indenture Act of 1939 (15 U.S.C. 
ss.ss. 77aaa-77bbbb) as in effect on the date on which this Indenture is 
qualified under the TIA.

                  "Trustee" means the party named as such above until a
successor replaces it in accordance with the applicable provisions of this
Indenture and thereafter means the successor serving hereunder.

                  "Unrestricted Subsidiary" means (a) any Subsidiary that is
designated by the Board of Directors as an Unrestricted Subsidiary in accordance
with Section 4.17 hereof and (b) any Subsidiary of an Unrestricted Subsidiary.

                  "Voting Stock" means any class or classes of Capital Stock
pursuant to which the holders thereof have the general voting power under
ordinary circumstances to elect at least a majority of the board of directors,
managers or trustees of any Person (irrespective of whether or not, at the time,
stock of any other class or classes has, or might have, voting power by reason
of the happening of any contingency).

                  "Weighted Average Life to Maturity" means, when applied to any
Indebtedness at any date, the number of years obtained by dividing (a) the sum
of the products obtained by multiplying (x) the amount of each then remaining
installment, sinking fund, serial maturity or other required payment of
principal, including payment at final maturity, in respect thereof, by (y) the
number of years (calculated to the nearest one-twelfth) that will elapse between
such date and the making of such payment, by (b) the then outstanding principal
amount of such Indebtedness.

                  "Wholly Owned Restricted Subsidiary" means any Restricted
Subsidiary of the Company all of the outstanding Capital Stock or other
ownership interests of which (other than director's qualifying shares) shall at
the time be owned by the Company or by one of more Wholly Owned Restricted
Subsidiaries of the Company.

SECTION 1.02.     OTHER DEFINITIONS.
                                                                     Defined in
            Term                                                       Section

    "Affiliate Transaction".......................................       4.11
    "Asset Sale"..................................................       4.10
    "Asset Sale Offer"............................................       4.10
    "Benefitted Party"............................................      11.01
    "Change of Control Offer".....................................       4.14


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                                       14



    "Change of Control Payment"...................................       4.14
    "Change of Control Payment Date"..............................       4.14
    "Covenant Defeasance".........................................       8.03
    "Commencement Date"...........................................       4.10
    "Event of Default"............................................       6.01
    "Excess Proceeds".............................................       4.10
    "Guarantor"...................................................      11.01
    "incur".......................................................       4.09
    "Legal Defeasance" ...........................................       8.02
    "Non-Monetary Default"........................................      10.03
    "Offer Amount"................................................       3.09
    "Offer Period"................................................       3.09
    "Paying Agent"................................................       2.03
    "Payment Blockage Notice".....................................      10.03
    "Payment Default".............................................      10.03
    "Purchase Date"...............................................       3.09
    "Registrar"...................................................       2.03
    "Restricted Payments".........................................       4.07
    "Separation Date".............................................       2.06

SECTION 1.03.   INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT.

           Whenever this Indenture refers to a provision of the TIA, the
provision is incorporated by reference in and made a part of this Indenture,
other than those provisions of the TIA that may be excluded herein, which
provision shall be excluded to the extent specifically excluded in this
Indenture.

           The following TIA terms used in this Indenture have the following
meanings:

           "indenture securities" means the Notes and the Subsidiary Guarantees,
if any;

           "indenture security holder" means a Holder of a Note;

           "indenture to be qualified" means this Indenture;

           "indenture trustee" or "institutional trustee" means the Trustee;

           "obligor" on the Notes means the Company, the Guarantors and any
successor obligor upon the Notes or any Subsidiary Guarantee, as the case may
be.

           All other terms used in this Indenture that are defined by the TIA,
defined by TIA reference to another statute or defined by a rule or regulation
promulgated by the SEC under the TIA have the meanings so assigned to them.


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                                       15



SECTION 1.04.   RULES OF CONSTRUCTION.

           Unless the context otherwise requires:

           (1)  a term has the meaning assigned to it;

           (2)  an accounting term not otherwise defined has the meaning 
      assigned to it in accordance with GAAP;

           (3)  "or" is not exclusive;

           (4)  words in the singular include the plural, and in the plural 
      include the singular;

           (5)  provisions apply to successive events and transactions; and

           (6) references to sections of or rules under the Securities Act or
      the Exchange Act shall be deemed to include substitute, replacement or
      successor sections or rules adopted by the SEC from time to time.


                                    ARTICLE 2
                                    THE NOTES

SECTION 2.01.   FORM AND DATING.

           The Notes and the Trustee's certificate of authentication shall be
substantially in the form of Exhibit A hereto, the terms of which are
incorporated in and made a part of this Indenture. The notation on each Note
relating to the Subsidiary Guarantees shall be substantially in the form set
forth on Exhibit C, which is part of this Indenture. The Notes may have
notations, legends or endorsements approved as to form by the Company and
required by law, stock exchange rule, agreements to which the Company or each
Restricted Subsidiary is subject, or usage. Each Note shall be dated the date of
its authentication. The Notes shall be issuable only in denominations of $1,000
and integral multiples thereof.

           The Notes may, at the option of the Company, be issuable in whole or
in part in the form of one or more Global Notes and, in such case, the
Depositary or Depositaries for such Global Note or Global Notes shall be
designated by the Company in an Officers' Certificate delivered to the Trustee
on or prior to the Issuance Date. Every Global Note authenticated and delivered
hereunder will bear a legend substantially in the form thereof set forth on
Exhibit A hereto.

SECTION 2.02.   EXECUTION AND AUTHENTICATION.

           Two Officers of the Company shall sign the Notes for the Company by
manual or facsimile signature. The Company's seal shall be reproduced on the
Notes and may be in


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                                       16



facsimile form. An Officer of each Guarantor shall sign the Subsidiary Guarantee
for such Guarantor by manual or facsimile signature.

           If an Officer of the Company or a Guarantor whose signature is on a
Note or a Subsidiary Guarantee, as the case may be, no longer holds that office
at the time the Note is authenticated, the Note or the Subsidiary Guarantee, as
the case may be, shall nevertheless be valid.

           A Note shall not be valid until authenticated by the manual signature
of the Trustee. The signature of the Trustee shall be conclusive evidence that
the Note has been authenticated under this Indenture. The form of Trustee's
certificate of authentication to be borne by the Notes shall be substantially as
set forth in Exhibit A hereto.

           The Trustee shall, upon a written order of the Company signed by two
Officers of the Company, authenticate Notes for original issue up to an
aggregate principal amount stated in paragraph 4 of the Notes. The aggregate
principal amount of Notes outstanding at any time shall not exceed $__,000,000
except as provided in Section 2.07 hereof.

           The Trustee may appoint an authenticating agent acceptable to the
Company to authenticate Notes. Unless limited by the terms of such appointment,
an authenticating agent may authenticate Notes whenever the Trustee may do so.
Each reference in this Indenture to authentication by the Trustee includes
authentication by such agent. An authenticating agent has the same rights as an
Agent to deal with the Company or any Guarantor or an Affiliate of the Company
or any Guarantor.

SECTION 2.03.   REGISTRAR AND PAYING AGENT.

           The Company shall maintain (i) an office or agency where Notes may be
presented for registration of transfer or for exchange (including any
co-registrar, the "Registrar") and (ii) an office or agency where Notes may be
presented for payment ("Paying Agent"). The Registrar shall keep a register of
the Notes and of their transfer and exchange. The Company may appoint one or
more co-registrars and one or more additional paying agents. The term "Paying
Agent" includes any additional paying agent. The Company may change any Paying
Agent, Registrar or co-registrar without prior notice to any Holder of a Note.
The Company shall notify the Trustee and the Trustee shall notify the Holders of
the Notes of the name and address of any Agent not a party to this Indenture.
The Company or any Guarantor may act as Paying Agent, Registrar or co-registrar.
The Company shall enter into an appropriate agency agreement with any Agent not
a party to this Indenture, which shall be subject to any obligations imposed by
the provisions of the TIA. The agreement shall implement the provisions of this
Indenture that relate to such Agent. The Company shall notify the Trustee of the
name and address of any such Agent. If the Company fails to maintain a Registrar
or Paying Agent, or fails to give the foregoing notice, the Trustee shall act as
such, and shall be entitled to appropriate compensation in accordance with
Section 7.07 hereof.

           The Company initially appoints the Trustee as Registrar, Paying Agent
and agent for service of notices and demands in connection with the Notes.


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SECTION 2.04.   PAYING AGENT TO HOLD MONEY IN TRUST.

           The Company shall require each Paying Agent other than the Trustee to
agree in writing that the Paying Agent shall hold in trust for the benefit of
the Holders of the Notes or the Trustee all money held by the Paying Agent for
the payment of principal of, premium, if any, and interest on the Notes, and
shall notify the Trustee of any Default by the Company or the Guarantors in
making any such payment. While any such Default continues, the Trustee may
require a Paying Agent to pay all money held by it to the Trustee. The Company
at any time may require a Paying Agent to pay all money held by it to the
Trustee. Upon payment over to the Trustee, the Paying Agent (if other than the
Company or a Guarantor) shall have no further liability for the money delivered
to the Trustee. If the Company or a Guarantor acts as Paying Agent, it shall
segregate and hold in a separate trust fund for the benefit of the Holders of
the Notes, subject to Article 10 hereof, all money held by it as Paying Agent.
Upon any bankruptcy or reorganization proceeding relating to the Company or a
Guarantor, the Trustee shall serve as Paying Agent for the Notes.

SECTION 2.05.   LISTS OF HOLDERS OF THE NOTES.

           The Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of
Holders of the Notes and shall otherwise comply with TIA ss. 312(a). If the
Trustee is not the Registrar, the Company and/or the Guarantors shall furnish to
the Trustee at least seven Business Days before each interest payment date and
at such other times as the Trustee may request in writing a list in such form
and as of such date as the Trustee may reasonably require of the names and
addresses of Holders of the Notes, including the aggregate principal amount of
the Notes held by each thereof, and the Company and each Guarantor shall
otherwise comply with TIA ss. 312(a).

SECTION 2.06.   TRANSFER AND EXCHANGE.

           When Notes are presented to the Registrar with a request to register
the transfer or to exchange them for an equal principal amount of Notes of other
denominations, the Registrar shall register the transfer or make the exchange if
its requirements for such transactions are met; provided, however, that any Note
presented or surrendered for registration of transfer or exchange shall be duly
endorsed or accompanied by a written instruction of transfer in form
satisfactory to the Registrar and the Trustee duly executed by the Holder
thereof or by his attorney duly authorized in writing. To permit registrations
of transfer and exchanges, the Company shall issue and the Trustee shall
authenticate Notes at the Registrar's request, subject to such rules as the
Trustee may reasonably require.

           Neither the Company nor the Registrar shall be required to (a) issue,
register the transfer of or exchange Notes during a period beginning at the
opening of business on a Business Day 15 days before the day of any selection of
Notes for redemption under Section 3.02 hereof and ending at the close of
business on the day of selection or (b) register the transfer of or exchange any
Note so selected for redemption in whole or in part, except the unredeemed
portion of any Note being redeemed in part.


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           No service fee shall be charged to any Holder of a Note for any
registration of transfer or exchange (except as otherwise expressly permitted
herein), but the Company may require payment of a sum sufficient to cover any
transfer tax or similar governmental charge payable in connection therewith
(other than such transfer tax or similar governmental charge payable upon
exchanges pursuant to Sections 2.10, 3.06 or 9.05 hereof, which shall be paid by
the Company).

           Prior to due presentment to the Trustee for registration of the
transfer of any Note, the Trustee, any Agent, the Company and each Guarantor may
deem and treat the Person in whose name any Note is registered as the absolute
owner of such Note for the purpose of receiving payment of principal of,
premium, if any, and interest on such Note and for all other purposes
whatsoever, whether or not such Note is overdue, and none of the Trustee, any
Agent, the Company or any Guarantor shall be affected by notice to the contrary.

           Notwithstanding any other provision in this Indenture, no Global Note
may be transferred to, or registered or exchanged for Notes registered in the
name of, any Person other than the Depositary for such Global Note or any
nominee thereof, and no such transfer may be registered, unless (a) such
Depositary (i) notifies the Company that it is unwilling or unable to continue
as Depositary for such Global Note or (ii) ceases to be a clearing agency
registered under the Exchange Act, (b) the Company delivers to the Trustee an
Officers' Certificate stating that such Global Note shall be so transferable,
registrable, and exchangeable, and such transfers shall be registrable, or (c)
there shall have occurred and be continuing an Event of Default with respect to
the Notes evidenced by such Global Note. Notwithstanding any other provision in
this Indenture, a Global Note to which the restriction set forth in the
preceding sentence shall have ceased to apply may be transferred only to, and
may be registered and exchanged for Notes registered only in the name or names
of, such Person or Persons as the Depositary for such Global Note shall have
directed and no transfer thereof other than such a transfer may be registered.
Every Note authenticated and delivered upon registration of transfer of, or in
exchange for or in lieu of, a Global Note to which the restriction set forth in
the first sentence of this paragraph shall apply, whether pursuant to this
Section 2.06 or otherwise, shall be authenticated and delivered in the form of,
and shall be, a Global Note.

SECTION 2.07.   REPLACEMENT NOTES.

           If any mutilated Note is surrendered to the Trustee, or the Company
and the Trustee receive evidence to their satisfaction of the destruction, loss
or theft of any Note, the Company shall issue and the Trustee, upon the written
order of the Company signed by two Officers of the Company, shall authenticate a
replacement Note (accompanied by a notation of the Subsidiary Guarantees duly
endorsed by each Guarantor) if the Trustee's requirements for replacements of
Notes are met. If required by the Trustee, the Company or the Guarantors, an
indemnity bond must be supplied by the Holder that is sufficient in the judgment
of the Trustee, the Company and the Guarantors to protect the Company, the
Guarantors, the Trustee, any Agent or any authenticating agent from any loss
which any of them may suffer if a Note is replaced. Each of the Company, the
Guarantors and the Trustee may charge for its expenses in replacing a Note.


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           Every replacement Note is an additional obligation of the Company and
the Guarantors and shall be entitled to all of the benefits of this Indenture
equally and ratably with all other Notes duly issued hereunder.

SECTION 2.08.   OUTSTANDING NOTES.

           The Notes outstanding at any time are all the Notes authenticated by
the Trustee except for those canceled by it, those delivered to it for
cancellation and those described in this Section 2.08 as not outstanding. If a
Note is replaced pursuant to Section 2.07 hereof, it ceases to be outstanding
unless the Trustee receives proof satisfactory to it that the replaced Note is
held by a bona fide purchaser. If the principal amount of any Note is considered
paid under Section 4.01 hereof, it ceases to be outstanding and interest on it
ceases to accrue. Subject to Section 2.09 hereof, a Note does not cease to be
outstanding because the Company, a Guarantor, a Subsidiary of the Company or a
Guarantor or an Affiliate of the Company or a Guarantor holds the Note.

SECTION 2.09.   TREASURY NOTES.

           In determining whether the Holders of the required principal amount
of Notes have concurred in any direction, waiver or consent, Notes owned by the
Company, any Guarantor, any of their respective Subsidiaries or any Affiliate of
the Company or any Guarantor shall be considered as though not outstanding,
except that for purposes of determining whether the Trustee shall be protected
in relying on any such direction, waiver or consent, only Notes which the
Trustee knows to be so owned shall be so considered. Notwithstanding the
foregoing, Notes that are to be acquired by the Company, any Guarantor, any
Subsidiary of the Company or any Guarantor or an Affiliate of the Company or any
Guarantor pursuant to an exchange offer, tender offer or other agreement shall
not be deemed to be owned by the Company, such Guarantor, a Subsidiary of the
Company or such Guarantor or an Affiliate of the Company or such Guarantor until
legal title to such Notes passes to the Company, such Guarantor, such Subsidiary
or such Affiliate, as the case may be.

SECTION 2.10.   TEMPORARY NOTES.

           Until definitive Notes are ready for delivery, the Company may
prepare and the Trustee shall authenticate temporary Notes (accompanied by a
notation of the Subsidiary Guarantees duly endorsed by each Guarantor).
Temporary Notes shall be substantially in the form of definitive Notes but may
have variations that the Company and the Trustee consider appropriate for
temporary Notes. Without unreasonable delay, the Company shall prepare and the
Trustee, upon receipt of the written order of the Company signed by two Officers
of the Company, shall authenticate definitive Notes (accompanied by a notation
of the Subsidiary Guarantees duly endorsed by each Guarantor) in exchange for
temporary Notes. Until such exchange, temporary Notes shall be entitled to the
same rights, benefits and privileges as definitive Notes.


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SECTION 2.11.   CANCELLATION.

           The Company at any time may deliver Notes to the Trustee for
cancellation. The Registrar and Paying Agent shall forward to the Trustee any
Notes surrendered to them for registration of transfer, exchange or payment. The
Trustee shall cancel all Notes surrendered for registration of transfer,
exchange, payment, replacement or cancellation and shall destroy canceled Notes
(subject to the record retention requirement of the Exchange Act), unless the
Company directs canceled Notes to be returned to it. The Company may not issue
new Notes to replace Notes that it has redeemed or paid or that have been
delivered to the Trustee for cancellation. All canceled Notes held by the
Trustee shall be destroyed and certification of their destruction delivered to
the Company, unless by a written order, signed by two Officers of the Company,
the Company shall direct that canceled Notes be returned to it.

SECTION 2.12.   DEFAULTED INTEREST.

           If the Company and the Guarantors default in a payment of interest on
the Notes, the Company or any such Guarantor (to the extent of its obligations
under its Subsidiary Guarantee) shall pay the defaulted interest in any lawful
manner plus, to the extent lawful, interest payable on the defaulted interest,
to the Persons who are Holders of the Notes on a subsequent special record date,
which date shall be at the earliest practicable date but in all events at least
five Business Days prior to the payment date, in each case at the rate provided
in the Notes and in Section 4.01 hereof. The Company shall fix or cause to be
fixed each such special record date and payment date, and shall, promptly
thereafter, notify the Trustee of any such date. At least 15 days before the
special record date, the Company (or the Trustee, in the name of and at the
expense of the Company) shall mail to Holders of the Notes a notice that states
the special record date, the related payment date and the amount of such
interest to be paid.

SECTION 2.13.   RECORD DATE.

           The record date for purposes of determining the identity of Holders
of the Notes entitled to vote or consent to any action by vote or consent
authorized or permitted under this Indenture shall be determined as provided for
in TIA ss. 316(c).

SECTION 2.14.   CUSIP NUMBER.

           The Company in issuing the Notes may use a "CUSIP" number and, if it
does so, the Trustee shall use the CUSIP number in notices of redemption or
exchange as a convenience to Holders; provided that any such notice may state
that no representation is made as to the correctness or accuracy of the CUSIP
number printed in the notice or on the Notes and that reliance may be placed
only on the other identification numbers printed on the Notes. The Company will
promptly notify the Trustee of any change in the CUSIP number.


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SECTION 2.15.   COMPUTATION OF INTEREST.

           Interest will be computed on the basis of a 360-day year consisting
of twelve 30-day months.

                                    ARTICLE 3
                        REDEMPTION AND OFFERS TO PURCHASE

SECTION 3.01.   NOTICES TO TRUSTEE.

           If the Company elects to redeem Notes pursuant to the optional
redemption provisions of Section 3.07 hereof, it shall furnish to the Trustee,
at least 45 days but not more than 60 days before a redemption date, an
Officers' Certificate setting forth (i) the Section of this Indenture pursuant
to which the redemption shall occur, (ii) the redemption date, (iii) the
principal amount of Notes to be redeemed and (iv) the redemption price.

SECTION 3.02.   SELECTION OF NOTES TO BE REDEEMED.

           If less than all of the Notes are to be redeemed at any time, the
Trustee shall select the Notes to be redeemed among the applicable Holders of
the Notes in compliance with the requirements of the principal national
securities exchange, if any, on which the Notes are listed or, if the Notes are
not so listed, on a pro rata basis, by lot or in accordance with any other
method the Trustee considers fair and appropriate, provided that no Notes of
$1,000 or less shall be redeemed in part. In the event of partial redemption by
lot, the particular Notes to be redeemed shall be selected, unless otherwise
provided herein, not less than 30 nor more than 60 days prior to the redemption
date by the Trustee from the outstanding Notes not previously called for
redemption.

           The Trustee shall promptly notify the Company in writing of the Notes
selected for redemption and, in the case of any Note selected for partial
redemption, the principal amount thereof to be redeemed. Notes and portions of
Notes selected shall be in amounts of $1,000 or whole multiples of $1,000;
except that if all of the Notes of a Holder are to be redeemed, the entire
outstanding amount of Notes held by such Holder, even if not a multiple of
$1,000, shall be redeemed. Except as provided in the preceding sentence,
provisions of this Indenture that apply to Notes called for redemption also
apply to portions of Notes called for redemption.

SECTION 3.03.   NOTICE OF REDEMPTION.

           At least 30 days but not more than 60 days before a redemption date,
the Company shall mail or cause to be mailed, by first class mail, a notice of
redemption to each Holder whose Notes are to be redeemed at its registered
address.

           The notice shall identify the Notes to be redeemed and shall state:

                (a)   the redemption date;


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                (b)   the redemption price (including accrued interest to the 
      redemption date);

                (c) if any Note is being redeemed in part, the portion of the
      principal amount of such Note to be redeemed and that, after the
      redemption date upon surrender of such Note, a new Note or Notes in
      principal amount equal to the unredeemed portion shall be issued upon
      cancellation of the original Note;

                (d)   the name and address of the Paying Agent;

                (e)   that Notes called for redemption must be surrendered to 
      the Paying Agent to collect the redemption price;

                (f) that, unless the Company defaults in making such redemption
      payment, interest on Notes called for redemption shall cease to accrue on
      and after the redemption date;

                (g)   the paragraph of the Notes and/or Section of this 
      Indenture pursuant to which the Notes called for redemption are being 
      redeemed; and

                (h) that no representation is made as to the correctness or
      accuracy of the CUSIP number, if any, listed in such notice or printed on
      the Notes.

           At the Company's request, the Trustee shall give the notice of
redemption in the Company's name and at its expense; provided, however, that the
Company shall have delivered to the Trustee, at least 45 days prior to the
redemption date, an Officers' Certificate requesting that the Trustee give such
notice and setting forth the information to be stated in such notice as provided
in the preceding paragraph.

SECTION 3.04.   EFFECT OF NOTICE OF REDEMPTION.

           Once notice of redemption is mailed in accordance with Section 3.03
hereof, Notes called for redemption become irrevocably due and payable on the
redemption date at the redemption price. A notice of redemption may not be
conditional. On and after the redemption date, unless the Company defaults in
the payment of the redemption price, interest will cease to accrue on the Notes
or portions thereof called for redemption and all rights of Holders with respect
to such Notes will terminate except for the right to receive payment of the
redemption price upon surrender for redemption.

SECTION 3.05.   DEPOSIT OF REDEMPTION PRICE.

           One Business Day prior to the redemption date, the Company shall
deposit with the Trustee or with the Paying Agent money sufficient to pay the
redemption price of and accrued interest on all Notes to be redeemed on that
date. The Trustee or the Paying Agent shall promptly return to the Company any
money deposited with the Trustee or the Paying Agent by the Company in excess of
the amounts necessary to pay the redemption price of, and accrued interest on,
all Notes to be redeemed.


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           If the Company complies with the provisions of the preceding
paragraph, on and after the redemption date, interest shall cease to accrue on
the Notes or the portions of Notes called for redemption, whether or not such
Notes are presented for payment. If a Note is redeemed on or after an interest
record date but on or prior to the related interest payment date, then any
accrued and unpaid interest shall be paid to the Person in whose name such Note
was registered at the close of business on such record date. If any Note called
for redemption shall not be so paid upon surrender for redemption because of the
failure of the Company to comply with the preceding paragraph, interest shall be
paid on the unpaid principal, from the redemption date until such principal is
paid, and to the extent lawful on any interest not paid on such unpaid
principal, in each case at the rate provided in the Notes and in Section 4.01
hereof.

SECTION 3.06.   NOTES REDEEMED IN PART.

           Upon surrender of a Note that is redeemed in part, the Company shall
issue and, upon the Company's written request, the Trustee shall authenticate
for the Holder at the expense of the Company a new Note (accompanied by a
notation of the Subsidiary Guarantees duly endorsed by each Guarantor) equal in
principal amount to the unredeemed portion of the Note surrendered.

SECTION 3.07.   OPTIONAL REDEMPTION.

           The Notes shall not be redeemable at the Company's option prior to
______, 2001. Thereafter, the Notes shall be subject to redemption at the option
of the Company, in whole or in part, upon not less than 30 nor more than 60
days' notice, at the redemption prices (expressed as percentages of principal
amount) set forth below plus accrued and unpaid interest thereon to the
applicable redemption date, if redeemed during the twelve-month period beginning
on ______ of the years indicated below:

         Year                                                     Percentage

         2001.....................................................  ___.__%
         2002.....................................................  ___.__%
         2003.....................................................  ___.__%
         2004 and thereafter...................................... 100.00%

           Notwithstanding the foregoing, at any time prior to ______, 1999, the
Company may redeem up to 35% of the initial principal amount of the Notes
originally issued with the net proceeds of one or more Qualified Equity
Offerings at a redemption price equal to ___% of the principal amount of such
Notes, plus accrued and unpaid interest, if any, to the date of redemption;
provided, that at least 65% of the principal amount of Notes originally issued
remains outstanding immediately after the occurrence of any such redemption and
that such redemption occurs within 60 days following the closing of any such
Qualified Equity Offering.

SECTION 3.08.   MANDATORY REDEMPTION.


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           Except as set forth below under Section 4.10 and Section 4.14 hereof,
the Company shall not be required to make sinking fund or redemption payments
with respect to the Notes.

SECTION 3.09.   ASSET SALE OFFERS.

           In the event that the Company shall commence an Asset Sale Offer
pursuant to Section 4.10 hereof, it shall follow the procedures specified below:

           The Asset Sale Offer shall remain open for 20 Business Days after the
Commencement Date relating to such Asset Sale Offer, except to the extent
required to be extended by applicable law (as so extended, the "Offer Period").
No later than one Business Day after the termination of the Offer Period (the
"Purchase Date"), the Company shall purchase the principal amount (the "Offer
Amount") of Notes required to be purchased in such Asset Sale Offer pursuant to
Sections 3.02 and 4.10 hereof or, if less than the Offer Amount has been
tendered, all Notes tendered in response to the Asset Sale Offer.

           If the Purchase Date is on or after an interest payment record date
and on or before the related interest payment date, any interest accrued to such
Purchase Date shall be paid to the Person in whose name a Note is registered at
the close of business on such record date, and no additional interest shall be
payable to Holders who tender Notes pursuant to the Asset Sale Offer.

           On the Commencement Date of any Asset Sale Offer, the Company shall
send or cause to be sent, by first class mail, a notice to each of the Holders,
with a copy to the Trustee. Such notice, which shall govern the terms of the
Asset Sale Offer, shall contain all instructions and materials necessary to
enable the Holders to tender Notes pursuant to the Asset Sale Offer and shall
state:

           (1)  that the Asset Sale Offer is being made pursuant to this Section
                3.09 and Section 4.10 hereof and the length of time the Asset
                Sale Offer shall remain open;

           (2)  the Offer Amount, the Purchase Price and the Purchase Date;

           (3)  that any Note not tendered or accepted for payment shall 
                continue to accrue interest;

           (4)  that, unless the Company defaults in the payment of the Purchase
                Price, any Note accepted for payment pursuant to the Asset Sale
                Offer shall cease to accrue interest after the Purchase Date;

           (5)  that Holders electing to have a Note purchased pursuant to any
                Asset Sale Offer shall be required to surrender the Note, with
                the form entitled "Option of Holder to Elect Purchase" on the
                reverse of the Note completed, to the Company, a depositary, if
                appointed by the Company, or a Paying Agent at the address
                specified in the notice prior to the close of business on the
                Business Day preceding the Purchase Date;


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           (6)  that Holders shall be entitled to withdraw their election if the
                Company, depositary or Paying Agent, as the case may be,
                receives, not later than the close of business on the Business
                Day preceding the termination of the Offer Period, a telegram,
                telex, facsimile transmission or letter setting forth the name
                of the Holder, the principal amount of the Note the Holder
                delivered for purchase and a statement that such Holder is
                withdrawing his election to have the Note purchased;

           (7)  that, if the aggregate principal amount of Notes surrendered by
                Holders exceeds the Offer Amount, the Trustee shall select the
                Notes to be purchased on a pro rata basis (with such adjustments
                as may be deemed appropriate by the Company so that only Notes
                in denominations of $1,000, or integral multiples thereof, shall
                be purchased); and

           (8)  that Holders whose Notes were purchased only in part shall be
                issued new Notes equal in principal amount to the unpurchased
                portion of the Notes surrendered.

           On or before 12:00 p.m. on each Purchase Date, the Company shall
irrevocably deposit with the Trustee or Paying Agent in immediately available
funds the aggregate Purchase Price with respect to a principal amount of Notes
equal to the Offer Amount, together with accrued interest thereon, if any, to be
held for payment in accordance with the terms of this Section 3.09. On the
Purchase Date, the Company shall, to the extent lawful, (i) accept for payment,
on a pro rata basis to the extent necessary, an aggregate principal amount equal
to the Offer Amount of Notes tendered pursuant to the Asset Sale Offer, or if
less than the Offer Amount has been tendered, all Notes or portions thereof
tendered, (ii) deliver or cause the Paying Agent or depositary, as the case may
be, to deliver to the Trustee Notes so accepted and (iii) deliver to the Trustee
an Officers' Certificate stating that such Notes or portions thereof were
accepted for payment by the Company in accordance with the terms of this Section
3.09. The Company, depositary or Paying Agent, as the case may be, shall
promptly (but in any case not later than three Business Days after the Purchase
Date) mail or deliver to each tendering Holder an amount equal to the Purchase
Price with respect to the Notes tendered by such Holder and accepted by the
Company for purchase, and the Company shall promptly issue a new Note, and the
Trustee shall authenticate and mail or deliver such new Note, to such Holder,
equal in principal amount to any unpurchased portion of such Holder's Notes
surrendered. Any Note not accepted in the Asset Sale Offer shall be promptly
mailed or delivered by the Company to the Holder thereof. The Company shall
publicly announce in a newspaper of general circulation the results of the Asset
Sale Offer on the Purchase Date.

           The Asset Sale Offer shall be made by the Company in compliance with
all applicable laws, including, without limitation, Regulation 14E of the
Exchange Act and the rules thereunder, to the extent applicable, and all other
applicable federal and state securities laws.

           Each purchase pursuant to this Section 3.09 shall be made pursuant to
the provisions of the second paragraph of Section 3.05 hereof to the extent
applicable.


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           In the event the amount of Excess Proceeds to be applied to an Asset
Sale Offer would result in the purchase of a principal amount of Notes which is
not evenly divisible by $1,000, the Trustee shall promptly refund to the Company
the portion of such Excess Proceeds that is not necessary to purchase the
immediately lesser principal amount of Notes that is so divisible.

                                    ARTICLE 4
                                    COVENANTS

SECTION 4.01.   PAYMENT OF NOTES.

           The Company shall pay or cause to be paid the principal of, premium,
if any, and interest on the Notes on the dates and in the manner provided in the
Notes. Principal, premium, if any, and interest shall be considered paid on the
date due if the Paying Agent, if other than the Company or a Restricted
Subsidiary, holds as of 10:00 a.m. Eastern Time on the due date money deposited
by the Company in immediately available funds and designated for and sufficient
to pay all principal, premium, if any, and interest then due.

           The Company shall pay interest (including post-petition interest in
any proceeding under any Bankruptcy Law) on overdue principal at the rate equal
to 1% per annum in excess of the then applicable interest rate on the Notes to
the extent lawful; it shall pay interest (including post-petition interest in
any proceeding under any Bankruptcy Law) on overdue installments of interest
(without regard to any applicable grace period) at the same rate to the extent
lawful.

SECTION 4.02.   MAINTENANCE OF OFFICE OR AGENCY.

           The Company shall maintain in the Borough of Manhattan, the City of
New York, an office or agency (which may be an office of the Trustee or an
affiliate of the Trustee, Registrar or co-registrar) where Notes may be
surrendered for registration of transfer or for exchange and where notices and
demands to or upon the Company or any Restricted Subsidiary in respect of the
Notes and this Indenture may be served. The Company shall 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.

           The Company may also from time to time designate one or more other
offices or agencies where the Notes 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 the Borough of
Manhattan, the City of New York for such purposes. The Company shall 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.

           The Company hereby designates the Corporate Trust Office of the
Trustee as one such office or agency of the Company in accordance with Section
2.03 hereof.


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SECTION 4.03.   REPORTS.

           Whether or not required by the rules and regulations of the SEC, so
long as any Notes are outstanding, the Company will furnish to the Holders of
Notes (i) all quarterly and annual financial information that would be required
to be contained in a filing with the SEC on Forms 10- Q and 10-K if the Company
were required to file such Forms, including a "Management's Discussion and
Analysis of Financial Condition and Results of Operations" and, with respect to
the annual information only, a report thereon by the Company's certified
independent accountants and (ii) all financial information that would be
required to be included in a Form 8-K filed with the SEC if the Company were
required to file such reports. In addition, whether or not required by the rules
and regulations of the SEC, the Company will file a copy of all such information
and reports with the SEC for public availability (unless the SEC will not accept
such a filing) and make such information available to investors who request it
in writing. Notwithstanding anything to the contrary contained herein, the
Trustee shall have no duty to review such documents for purposes of determining
compliance with any provisions of this Indenture.

SECTION 4.04.   COMPLIANCE CERTIFICATE.

           (a) The Company shall deliver to the Trustee, within 90 days after
the end of each fiscal year, an Officers' Certificate stating that a review of
the activities of the Company and its Subsidiaries during the preceding fiscal
year has been made under the supervision of the signing Officers with a view to
determining whether the Company and each Restricted Subsidiary has kept,
observed, performed and fulfilled its obligations under this Indenture
(including with respect to any Restricted Payments made during such year, the
basis upon which the calculations required by Section 4.07 hereof were computed,
which calculations may be based on the Company's latest available financial
statements), and further stating, as to each such Officer signing such
certificate, that to the best of his or her knowledge, the Company and each
Restricted Subsidiary has kept, observed, performed and fulfilled each and every
covenant contained in this Indenture and is not in default in the performance or
observance of any of the terms, provisions and conditions of this Indenture (or,
if a Default or Event of Default shall have occurred, describing all such
Defaults or Events of Default of which he or she may have knowledge and what
action the Company and each Restricted Subsidiary, as the case may be, is taking
or proposes to take with respect thereto) and that to the best of his or her
knowledge no event has occurred and remains in existence by reason of which
payments on account of the principal of or interest, if any, on the Notes is
prohibited or if such event has occurred, a description of the event and what
action the Company and each Restricted Subsidiary, as the case may be, is taking
or proposes to take with respect thereto.

           (b) So long as not contrary to the then current recommendations of
the American Institute of Certified Public Accountants, the year-end financial
statements delivered pursuant to Section 4.03 hereof shall be accompanied by a
written statement of the Company's independent public accountants (who shall be
a firm of established national reputation) that in making the examination
necessary for certification of such financial statements, nothing has come to
their attention that would lead them to believe that the Company has violated
any provisions of Article 4 or Article 5 hereof or, if any such violation has
occurred, specifying the nature and period of


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existence thereof, it being understood that such accountants shall not be liable
directly or indirectly to any Person for any failure to obtain knowledge of any
such violation.

           (c) The Company shall, so long as any of the Notes are outstanding,
deliver to the Trustee, forthwith upon any Officer becoming aware of any Default
or Event of Default, an Officers' Certificate specifying such Default or Event
of Default and what action the Company is taking or proposes to take with
respect thereto.

SECTION 4.05.   TAXES.

           The Company shall pay, and shall cause each of its Subsidiaries to
pay, prior to delinquency, all material taxes, assessments, and governmental
levies except (i) such as are contested in good faith and by appropriate
proceedings or (ii) the nonpayment of which would not materially adversely
affect the business, condition (financial or otherwise), operations, performance
or properties of the Company and its Subsidiaries, taken as a whole.

SECTION 4.06.   STAY, EXTENSION AND USURY LAWS.

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

SECTION 4.07.   RESTRICTED PAYMENTS.

           The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly: (a) declare or pay any dividend or make
any distribution on account of the Company's or any of its Restricted
Subsidiaries' Equity Interests (other than dividends or distributions payable in
Equity Interests (other than Disqualified Stock) of the Company or such
Restricted Subsidiary or dividends or distributions payable to the Company or
any Restricted Subsidiary); (b) purchase, redeem or otherwise acquire or retire
for value any Equity Interests of the Company or any Restricted Subsidiary or
other Affiliate of the Company (other than any such Equity Interests owned by
the Company or any Restricted Subsidiary); (c) purchase, redeem or otherwise
acquire or retire prior to scheduled maturity for value any Indebtedness that is
subordinated in right of payment to the Notes; or (d) make any Investment other
than a Permitted Investment (all such payments and other actions set forth in
clauses (a) through (d) above being collectively referred to as "Restricted
Payments"), unless, at the time of such Restricted Payment:


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           (i)  no Default or Event of Default shall have occurred and be
      continuing or would occur as a consequence thereof; and

           (ii) the Company would, at the time of such Restricted Payment and
      after giving pro forma effect thereto, have been permitted to incur at
      least $1.00 of additional Indebtedness pursuant to the test set forth in
      the first paragraph of Section 4.09 hereof; and

           (iii)such Restricted Payment, together with the aggregate of all
      other Restricted Payments made by the Company and its Restricted
      Subsidiaries after the date of this Indenture is less than (x) the
      cumulative EBITDA of the Company, minus 1.75 times the cumulative
      Consolidated Interest Expense of the Company, in each case for the period
      (taken as one accounting period) from June 30, 1996, to the end of the
      Company's most recently ended fiscal quarter for which internal financial
      statements are available at the time of such Restricted Payment, plus (y)
      the aggregate net Equity Proceeds received by the Company from the
      issuance or sale since the date of this Indenture of Equity Interests of
      the Company or of debt securities of the Company that have been converted
      into such Equity Interests (other than Equity Interests or convertible
      debt securities sold to a Restricted Subsidiary of the Company and other
      than Disqualified Stock or debt securities that have been converted into
      Disqualified Stock), plus (z) $2.0 million.

           The foregoing provisions will not prohibit (A) 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; (B) the redemption, repurchase, retirement or other acquisition or
retirement for value of any Equity Interests of the Company in exchange for, or
with the net cash proceeds of, the substantially concurrent sale (other than to
a Restricted Subsidiary of the Company) of other Equity Interests of the Company
(other than any Disqualified Stock); (C) the defeasance, redemption, repurchase,
retirement or other acquisition or retirement for value of Indebtedness that is
subordinated or pari passu in right of payment to the Notes in exchange for, or
with the net cash proceeds of, a substantially concurrent issuance and sale
(other than to a Restricted Subsidiary of the Company) of Equity Interests of
the Company (other than Disqualified Stock); (D) the defeasance, redemption,
repurchase, retirement or other acquisition or retirement for value of
Indebtedness that is subordinated or pari passu in right of payment to the Notes
in exchange for, or with the net cash proceeds of, a substantially concurrent
issue and sale (other than to the Company or any of its Restricted Subsidiaries)
of Refinancing Indebtedness; (E) the repurchase of any Indebtedness subordinated
or pari passu in right of payment to the Notes at a purchase price not greater
than 101% of the principal amount of such Indebtedness in the event of a Change
of Control in accordance with provisions similar to the covenant set forth in
Section 4.14 hereof, provided that prior to or contemporaneously with such
repurchase the Company has made the Change of Control Offer as provided in such
covenant with respect to the Notes and has repurchased all Notes validly
tendered for payment in connection with such Change of Control Offer; (F) the
prepayment of the Chrysler Notes, together with premium and interest thereon;
(G) the prepayment of $450,000 of junior subordinated notes originally issued by
the Company to First Document Storage, Inc. in connection with a 1990
acquisition, together with interest thereon; and (H) additional payments to
current or former employees or directors of the Company for repurchases of
stock, stock options or other equity interests, provided that the 

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aggregate amount of all such payments under this clause (H) does not exceed 
$500,000 in any year and $2.0 million in the aggregate.

           The Restricted Payments described in clauses (B), (C), (E) and (H) of
the immediately preceding paragraph will be Restricted Payments that will be
permitted to be taken in accordance with such paragraph but will reduce the
amount that would otherwise be available for Restricted Payments under clause
(iii) of the first paragraph of this section, and the Restricted Payments
described in clauses (A), (D), (F) and (G) of the immediately preceding
paragraph will be Restricted Payments that will be permitted to be taken in
accordance with such paragraph and will not reduce the amount that would
otherwise be available for Restricted Payments under clause (iii) of the first
paragraph of this section.

           If an Investment results in the making of a Restricted Payment, the
aggregate amount of all Restricted Payments deemed to have been made as
calculated under the foregoing provision will be reduced by the amount of any
net reduction in such Investment (resulting from the payment of interest or
dividends, loan repayment, transfer of assets or otherwise) to the extent such
net reduction is not included in the Company's EBITDA; provided, however, that
the total amount by which the aggregate amount of all Restricted Payments may be
reduced may not exceed the lesser of (a) the cash proceeds received by the
Company and its Restricted Subsidiaries in connection with such net reduction
and (b) the initial amount of such Investment.

           If the aggregate amount of all Restricted Payments calculated under
the foregoing provision includes an Investment in an Unrestricted Subsidiary or
other Person that thereafter becomes a Restricted Subsidiary, such Investment
will no longer be counted as a Restricted Payment for purposes of calculating
the aggregate amount of Restricted Payments. For the purpose of making any
calculations under this Indenture, (a) an Investment will include the fair
market value of the net assets of any Restricted Subsidiary at the time that
such Restricted Subsidiary is designated an Unrestricted Subsidiary and will
exclude the fair market value of the net assets of any Unrestricted Subsidiary
that is designated as a Restricted Subsidiary, (b) any property transferred to
or from an Unrestricted Subsidiary will be valued at fair market value at the
time of such transfer, provided that, in each case, the fair market value of an
asset or property is as determined by the Board of Directors in good faith, and
(c) subject to the foregoing, the amount of any Restricted Payment, if other
than cash, will be determined by the Board of Directors, whose good faith
determination will be conclusive.

           The Board of Directors may designate a Restricted Subsidiary to be an
Unrestricted Subsidiary in compliance with Section 4.17 hereof. Upon such
designation, all outstanding Investments by the Company and its Restricted
Subsidiaries (except to the extent repaid in cash) in the Subsidiary so
designated will be deemed to be Restricted Payments made at the time of such
designation and will reduce the amount available for Restricted Payments under
the first paragraph of this Section 4.07. Such designation will only be
permitted if such Restricted Payment would be permitted at such time and if such
Restricted Subsidiary otherwise meets the definition of an Unrestricted
Subsidiary.


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SECTION 4.08.   DIVIDEND AND OTHER PAYMENT RESTRICTIONS AFFECTING RESTRICTED
                SUBSIDIARIES.

           The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create or otherwise cause or suffer to
exist or become effective any encumbrance or restriction on the ability of any
Restricted Subsidiary to (a) (i) pay dividends or make any other distributions
to the Company or any of its Restricted Subsidiaries (A) on its Capital Stock or
(B) with respect to any other interest or participation in, or measured by, its
profits, or (ii) pay any Indebtedness owed to the Company or any of its
Restricted Subsidiaries, (b) make loans or advances to the Company or any of its
Restricted Subsidiaries or (c) transfer any of its properties or assets to the
Company or any of its Restricted Subsidiaries, except for such encumbrances or
restrictions existing under or by reason of (1) Existing Indebtedness as in
effect on the date of this Indenture, (2) the Credit Agreement as in effect as
of the date of this Indenture, and any amendments, modifications, restatements,
renewals, increases, supplements, refundings, replacements or refinancing
thereof, provided that such amendments, modifications, restatements, renewals,
increases, supplements, refundings, replacements or refinancings are no more
restrictive in the aggregate with respect to such dividend and other payment
restrictions than those contained in the Credit Agreement as in effect on the
date of this Indenture, (3) this Indenture and the Notes, (4) applicable law,
(5) any instrument governing Indebtedness or Capital Stock of a Person acquired
by the Company or any of its Restricted Subsidiaries as in effect at the time of
such acquisition (except to the extent such Indebtedness was incurred in
connection with or in contemplation of such acquisition), which encumbrance or
restriction is not applicable to any Person, or the properties or assets of any
Person, other than the Person, or the property or assets of the Person, so
acquired, provided that the EBITDA of such Person is not taken into account in
determining whether such acquisition was permitted by the terms of this
Indenture, (6) customary non-assignment provisions in leases entered into in the
ordinary course of business and consistent with past practices, (7) restrictions
on the transfer of property subject to purchase money or capitalized lease
obligations otherwise permitted by clause (e) of Section 4.09 hereof, or (8)
permitted Refinancing Indebtedness, provided that the restrictions contained in
the agreements governing such Refinancing Indebtedness are no more restrictive
in the aggregate than those contained in the agreements governing the
Indebtedness being refinanced.

SECTION 4.09.   INCURRENCE OF INDEBTEDNESS AND ISSUANCE OF PREFERRED STOCK.

           The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create, incur, issue, assume, guaranty
or otherwise become directly or indirectly liable with respect to (collectively,
"incur") any Indebtedness (including Acquired Debt) and the Company will not
permit any of its Restricted Subsidiaries to issue any shares of preferred
stock; provided, however, that the Company may incur Indebtedness and may permit
a Restricted Subsidiary to incur Indebtedness if at the time of such incurrence
and after giving effect thereto the Leverage Ratio would be less than 6.0 to
1.0.

           The foregoing limitations will not apply to (a) the incurrence by the
Company or any Restricted Subsidiary of Senior Bank Debt in an aggregate amount
not to exceed $25.0 million at any one time outstanding, (b) the issuance by the
Restricted Subsidiaries of Subsidiary Guarantees, 


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(c) the incurrence by the Company and its Restricted Subsidiaries of the
Existing Indebtedness, (d) the issuance by the Company of the Notes, (e) the
incurrence by the Company and its Restricted Subsidiaries of Capital Lease
Obligations and/or additional Indebtedness constituting purchase money
obligations up to an aggregate of $2.5 million at any one time outstanding,
provided that the Liens securing such Indebtedness constitute Permitted Liens,
(f) the incurrence of Indebtedness between (i) the Company and its Restricted
Subsidiaries and (ii) the Restricted Subsidiaries, (g) Hedging Obligations that
are incurred for the purpose of fixing or hedging interest rate risk with
respect to any floating rate Indebtedness that is permitted by the terms of this
Indenture to be outstanding, (h) the incurrence by the Company and its
Restricted Subsidiaries of Indebtedness arising out of letters of credit,
performance bonds, surety bonds and bankers' acceptances incurred in the
ordinary course of business up to an aggregate of $2.0 million at any one time
outstanding, (i) the incurrence by the Company and its Restricted Subsidiaries
of Indebtedness consisting of guarantees, indemnities or obligations in respect
of purchase price adjustments in connection with the acquisition or disposition
of assets, including, without limitation, shares of Capital Stock, and (j) the
incurrence by the Company and its Restricted Subsidiaries of Refinancing
Indebtedness issued in exchange for, or the proceeds of which are used to repay,
redeem, defease, extend, refinance, renew, replace or refund, Indebtedness
referred to in clauses (b) through (e) above, and this clause (j).

SECTION 4.10.   ASSET SALES.

           The Company will not, and will not permit any of its Restricted
Subsidiaries to, (a) sell, lease, convey or otherwise dispose of any assets
(including by way of a Sale and Leaseback Transaction, but excluding a
Qualifying Sale and Leaseback Transaction) other than sales of inventory in the
ordinary course of business (provided that the sale, lease, conveyance or other
disposition of all or substantially all of the assets of the Company will be
governed by the provisions of Section 4.14 hereof and/or the provisions of
Section 5.01 hereof, and not by the provisions of this Section 4.10), or (b)
issue or sell Equity Interests of any of its Restricted Subsidiaries, that, in
the case of either clause (a) or (b) above, whether in a single transaction or a
series of related transactions, (i) have a fair market value in excess of $1.0
million, or (ii) result in Net Proceeds in excess of $1.0 million (each of the
foregoing, an "Asset Sale"), unless (x) the Company (or the Restricted
Subsidiary, as the case may be) receives consideration at the time of such Asset
Sale at least equal to the fair market value (evidenced by an Officers'
Certificate delivered to the Trustee, and for Asset Sales having a fair market
value or resulting in net proceeds in excess of $5.0 million, evidenced by a
resolution of the Board of Directors set forth in an Officers' Certificate
delivered to the Trustee) of the assets sold or otherwise disposed of and (y) at
least 75% of the consideration therefor received by the Company or such
Restricted Subsidiary is in the form of cash or like-kind assets (in each case
as determined in good faith by the Company, evidenced by a resolution of the
Board of Directors and certified by an Officers' Certificate filed with the
Trustee); provided, however, that the amount of (A) any liabilities (as shown on
the Company's or such Restricted Subsidiary's most recent balance sheet or in
the notes thereto) of the Company or such Restricted Subsidiary (other than
liabilities that are by their terms subordinated to the Notes or any Subsidiary
Guarantee) that are assumed by the transferee of any such assets and (B) any
notes or other obligations received by the Company or such Restricted Subsidiary
from such transferee that are immediately converted by the Company or such
Restricted


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Subsidiary into cash (to the extent of the cash received) or Cash Equivalents,
shall be deemed to be cash for purposes of this provision; and provided,
further, that the 75% limitation referred to in the foregoing clause (y) shall
not apply to any Asset Sale in which the cash portion of theconsideration
received therefrom is equal to or greater than what the after-tax proceeds would
have been had such Asset Sale complied with the aforementioned 75% limitation. A
transfer of assets or issuance of Equity Interests by the Company to a Wholly
Owned Restricted Subsidiary or by a Wholly Owned Restricted Subsidiary to the
Company or to another Wholly Owned Restricted Subsidiary will not be deemed to
be an Asset Sale.

           Within 360 days of any Asset Sale, the Company may, at its option,
apply an amount equal to the Net Proceeds from such Asset Sale either (a) to
permanently reduce Senior Debt, or (b) to an investment in a Restricted
Subsidiary or in another business or capital expenditure or other
long-term/tangible assets, in each case, in the same or a similar line of
business as the Company or any of its Restricted Subsidiaries was engaged in on
the date of this Indenture or in businesses similar or reasonably related
thereto. Pending the final application of any such Net Proceeds, the Company may
temporarily reduce Senior Bank Debt or otherwise invest such Net Proceeds in any
manner that is not prohibited by this Indenture. Any Net Proceeds from such
Asset Sale that are not applied or invested as provided in the first sentence of
this paragraph will be deemed to constitute "Excess Proceeds." When the
aggregate amount of Excess Proceeds exceeds $5.0 million, the Company shall make
an offer to all Holders of Notes (an "Asset Sale Offer") to purchase the maximum
principal amount of Notes that may be purchased out of the Excess Proceeds, at
an offer price in cash in an amount equal to 100% of the principal amount
thereof plus accrued and unpaid interest, if any, to the date of purchase, in
accordance with the procedures set forth in this Indenture. To the extent that
the aggregate amount of Notes tendered pursuant to an Asset Sale Offer is less
than the Excess Proceeds, the Company may use any remaining Excess Proceeds for
general corporate purposes. If the aggregate principal amount of Notes
surrendered by Holders thereof exceeds the amount of Excess Proceeds, the
Trustee shall select the Notes to be purchased on a pro rata basis. Upon
completion of such offer to purchase, the amount of Excess Proceeds shall be
reset at zero.

           An Asset Sale Offer shall be made pursuant to the provisions of
Section 3.09 hereof. No later than the date which is five Business Days after
the date on which the aggregate amount of Excess Proceeds exceeds $5 million,
the Company shall notify the Trustee of such Asset Sale Offer and provide the
Trustee with an Officers' Certificate setting forth the calculations used in
determining the amount of Net Proceeds to be applied to the purchase of
Securities. The Company shall commence or cause to be commenced the Asset Sale
Offer on a date no later than 15 Business Days after such notice (the
"Commencement Date").

SECTION 4.11.   TRANSACTIONS WITH AFFILIATES.

           The Company will not, and will not permit any of its Restricted
Subsidiaries 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
any contract, agreement, understanding, loan, advance or guarantee with, or for
the benefit of, any Affiliate (each of the foregoing, an "Affiliate
Transaction"), unless (a) such Affiliate Transaction is on terms that are no
less favorable to the Company or the relevant


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Restricted Subsidiary than those that would have been obtained in a comparable
transaction by the Company or such Restricted Subsidiary with a non-Affiliated
Person and (b) the Company delivers to the Trustee (i) with respect to any
Affiliate Transaction involving aggregate payments in excessof $1.0 million, a
resolution of the Board of Directors set forth in an Officers' Certificate
certifying that such Affiliate Transaction complies with clause (a) above and
such Affiliate Transaction is approved by a majority of the disinterested
members of the Board of Directors and (ii) with respect to any Affiliate
Transaction involving aggregate payments in excess of $5.0 million, an opinion
as to the fairness to the Company or such Restricted Subsidiary from a financial
point of view issued by an investment banking firm of national standing;
provided, however, that (A) any employment agreement entered into by the Company
or any of its Restricted Subsidiaries in the ordinary course of business and
consistent with the past practice of the Company or such Restricted Subsidiary,
(B) transactions between or among the Company and/or its Restricted
Subsidiaries, (C) transactions permitted by the provisions of Section 4.07
hereof and (D) the grant of stock, stock options or other equity interests to
employees and directors of the Company in accordance with duly adopted Company
stock grant, stock option and similar plans, in each case, shall not be deemed
Affiliate Transactions; and further provided that (1) the provisions of clause
(b) shall not apply to sales of inventory by the Company or any Restricted
Subsidiary to any Affiliate in the ordinary course of business and (2) the
provisions of clause (b)(ii) shall not apply to loans or advances to the Company
or any Restricted Subsidiary from, or equity investments in the Company or any
Restricted Subsidiary by, any Affiliate to the extent permitted by Section 4.09
hereof.

SECTION 4.12.   LIENS.

           The Company shall not, and shall not permit any of its Restricted
Subsidiaries to, directly or indirectly, create, incur, assume or suffer to
exist any Lien (other than a Permitted Lien) upon any property or assets now
owned or hereafter acquired, or any income, profits or proceeds therefrom, or
assign or otherwise convey any right to receive income therefrom, unless (a) in
the case of any Lien securing any Indebtedness that is subordinate to the Notes,
the Notes are secured by a Lien on such property, assets or proceeds that is
senior in priority to such Lien and (b) in the case of any other Lien, the Notes
are equally and ratably secured with the obligation or liability secured by such
Lien.

SECTION 4.13.   ADDITIONAL SUBSIDIARY GUARANTEES.

           If any entity (other than an Excluded Restricted Subsidiary) shall
become a Restricted Subsidiary after the date of this Indenture, then such
Restricted Subsidiary shall execute a Subsidiary Guarantee and deliver an
opinion of counsel with respect thereto, in accordance with the terms of this
Indenture.

           No Restricted Subsidiary shall consolidate with or merge with or into
(whether or not such Restricted Subsidiary is the surviving Person), another
Person (other than the Company) whether or not affiliated with such Restricted
Subsidiary unless (a) subject to the provisions of the following paragraph, the
Person formed by or surviving any such consolidation or merger (if other than
such Restricted Subsidiary) assumes all the obligations of such Restricted
Subsidiary under 


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its Subsidiary Guarantee, if any, pursuant to a supplemental indenture in form
and substance reasonably satisfactory to the Trustee; (b) immediately after
giving effect to such transaction, no Default or Event of Default exists; and
(c) such Restricted Subsidiary, or any Person formed byor surviving any such
consolidation or merger, would be permitted to incur, immediately after giving
effect to such transaction, at least $1.00 of additional Indebtedness pursuant
to Section 4.09 hereof.

           In the event of (a) a sale or other disposition of all of the assets
of any Guarantor by way of merger, consolidation or otherwise, (b) a sale or
other disposition of all of the capital stock of any Guarantor, or (c) the
designation of a Guarantor as an Unrestricted Subsidiary in accordance with the
terms of Section 4.17, then such Guarantor (in the event of a sale or other
disposition, by way of such a merger, consolidation or otherwise, of all of the
capital stock of such Guarantor, or in the event of the designation of such
Guarantor as an Unrestricted Subsidiary) or the corporation acquiring the
property (in the event of a sale or other disposition of all of the assets of
such Guarantor) shall be released and relieved of any obligations under its
Subsidiary Guarantee; provided that the Net Proceeds of such sale or other
disposition are applied in accordance with the applicable provisions of this
Indenture.

SECTION 4.14.   OFFER TO PURCHASE UPON CHANGE OF CONTROL.

           Upon the occurrence of a Change of Control, each Holder of Notes will
have the right to require the Company to repurchase all or any part (equal to
$1,000 or an integral multiple thereof) of such Holder's Notes pursuant to the
offer described below (the "Change of Control Offer") at an offer price in cash
equal to 101% of the aggregate principal amount thereof plus accrued and unpaid
interest, if any, to but excluding the date of purchase (the "Change of Control
Payment"). Within 30 calendar days following any Change of Control, the Company
will mail a notice to each Holder stating:

                (a) that the Change of Control Offer is being made pursuant to
      this Section 4.14 and that all Notes tendered will be accepted for
      payment;

                (b) the purchase price and the purchase date, which will be no
      earlier than 30 calendar days nor later than 60 calendar days from the
      date such notice is mailed (the "Change of Control Payment Date");

                (c)   that any Note not tendered will continue to accrue 
      interest;

                (d) that, unless the Company defaults in the payment of the
      Change of Control Payment, all Notes accepted for payment pursuant to the
      Change of Control Offer will cease to accrue interest on and after the
      Change of Control Payment Date;

                (e) that Holders electing to have any Notes purchased pursuant
      to a Change of Control Offer will be required to surrender the Notes, with
      the form entitled "Option of Holder to Elect Purchase" on the reverse of
      the Notes completed, to the Paying Agent at the 


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address specified in such notice prior to the close of business on the fifth
Business Day preceding the Change of Control Payment Date;

                (f) that Holders will be entitled to withdraw their election if
      the Paying Agent receives, not later than the close of business on the
      second Business Day preceding the Change of Control Payment Date, a
      telegram, telex, facsimile transmission or letter setting forth the name
      of the Holder, the principal amount of Notes delivered for purchase, and a
      statement that such Holder is withdrawing his election to have such Notes
      purchased; and

                (g) that Holders whose Notes are being purchased only in part
      will be issued new Notes equal in principal amount to the unpurchased
      portion of the Notes surrendered, which unpurchased portion must be equal
      to $1,000 in principal amount or an integral multiple thereof.

The Company will comply with the requirements of Rule 14e-1 under the Exchange
Act and any other securities laws and regulations thereunder to the extent such
laws and regulations are applicable to the repurchase of the Notes in connection
with a Change of Control.

           On the Change of Control Payment Date, the Company will, to the
extent lawful, (a) accept for payment Notes or portions thereof tendered
pursuant to the Change of Control Offer, (b) deposit with the Paying Agent an
amount equal to the Change of Control Payment in respect of all Notes or
portions thereof so tendered and (c) deliver or cause to be delivered to the
Trustee the Notes so accepted together with an Officers' Certificate stating the
Notes or portions thereof tendered to the Company. The Paying Agent will
promptly mail to each Holder of Notes so accepted the Change of Control Payment
for such Notes, and the Trustee will promptly authenticate and mail to each
Holder a new Note equal in principal amount to any unpurchased portion of the
Notes surrendered, if any; provided that each such new Note will be in a
principal amount of $1,000 or an integral multiple thereof. Prior to complying
with the provisions of this Section 4.14, but in any event within 90 calendar
days following a Change of Control, the Company shall either repay all
outstanding Senior Debt or obtain the requisite consents, if any, under all
agreements governing outstanding Senior Debt to permit the repurchase of Notes
required by this Section 4.14. The Company shall publicly announce in The Wall
Street Journal, or if no longer published, a national newspaper of general
circulation the results of the Change of Control Offer on or as soon as
practicable after the Change of Control Payment Date.

SECTION 4.15.   CORPORATE EXISTENCE.

           Subject to Article 5 and Article 11 hereof, as the case may be, the
Company and each of the Restricted Subsidiaries shall do or cause to be done all
things necessary to preserve and keep in full force and effect (i) its corporate
existence, and the corporate, partnership or other existence of each of their
Subsidiaries, in accordance with the respective organizational documents (as the
same may be amended from time to time) of the Company, any such Restricted
Subsidiary or any such Subsidiary, as the case may be, and (ii) the rights
(charter and statutory), licenses and franchises of the Company, the Restricted
Subsidiaries and their respective Subsidiaries; provided, however, that the
Company and the Restricted Subsidiaries shall not be required to preserve any


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such right, license or franchise, or the corporate, partnership or other
existence of any of their respective Subsidiaries, if an officer of the Company
shall determine that the preservation thereof is no longer desirable in the
conduct of the business of the Company, the Restricted Subsidiaries and their
Subsidiaries, taken as a whole and that the loss thereof is not adverse in any
material respect to the Holders of the Notes.

SECTION 4.16.   CERTAIN SENIOR SUBORDINATED DEBT.

           Notwithstanding the provisions of Section 4.09 hereof, (a) the
Company shall not incur any Indebtedness that is subordinated or junior in right
of payment to any Senior Debt of the Company and senior in any respect in right
of payment to the Notes, and (b) the Company shall not permit any Restricted
Subsidiary to incur any Indebtedness that is subordinated or junior in right of
payment to its Senior Debt and senior in any respect in right of payment to its
Subsidiary Guarantee.

SECTION 4.17.   DESIGNATION OF UNRESTRICTED SUBSIDIARIES.

           The Board of Directors may designate any Subsidiary (including any
Restricted Subsidiary or any newly acquired or newly formed Subsidiary) to be an
Unrestricted Subsidiary so long as: (i) neither the Company nor any Restricted
Subsidiary is directly or indirectly liable for any Indebtedness of such
Subsidiary; (ii) no default with respect to any Indebtedness of such Subsidiary
would permit (upon notice, lapse of time or otherwise) any holder of any other
Indebtedness of the Company or any Restricted Subsidiary to declare a default on
such other Indebtedness or cause the payment thereof to be accelerated or
payable prior to its stated maturity; (iii) any Investment in such Subsidiary
deemed to be made as a result of designating such Subsidiary an Unrestricted
Subsidiary will not violate the provisions of Section 4.07 hereof; (iv) neither
the Company nor any Restricted Subsidiary has a contract, agreement,
arrangement, understanding or obligation of any kind, whether written or oral,
with such Subsidiary other than (A) those that might be obtained at the time
from Persons who are not Affiliates of the Company or (B) administrative, tax
sharing and other ordinary course contracts, agreements, arrangements and
understandings or obligations entered into in the ordinary course of business;
and (v) neither the Company nor any Restricted Subsidiary has any obligation to
subscribe for additional shares of Capital Stock or other Equity Interests in
such Subsidiary, or to maintain or preserve such Subsidiary's financial
condition or to cause such Subsidiary to achieve certain levels of operating
results, other than as permitted under Section 4.07 hereof. Notwithstanding the
foregoing, the Company may not designate as an Unrestricted Subsidiary any
Subsidiary which, on the date of this Indenture, is a Significant Subsidiary,
and may not sell, transfer or otherwise dispose of any properties or assets of
any such Significant Subsidiary to an Unrestricted Subsidiary, other than in the
ordinary course of business.

           The Board of Directors may designate any Unrestricted Subsidiary as a
Restricted Subsidiary; provided that such designation will be deemed to be an
incurrence of Indebtedness by a Restricted Subsidiary of any outstanding
Indebtedness of such Unrestricted Subsidiary and such designation will only be
permitted if (i) such Indebtedness is permitted under Section 4.09 hereof and
(ii) no Default or Event of Default would occur as a result of such designation.


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                                    ARTICLE 5
                                   SUCCESSORS

SECTION 5.01.   MERGER, CONSOLIDATION, OR SALE OF ASSETS.

           The Company shall not consolidate or merge with or into (whether or
not the Company is the surviving corporation), or sell, assign, transfer, lease,
convey or otherwise dispose of all or substantially all of its properties or
assets in one or more related transactions, to another Person unless (a) the
Company is the surviving corporation or the entity or the Person formed by or
surviving any such consolidation or merger (if other than the Company) or to
which such sale, assignment, transfer, lease, conveyance or other disposition
shall have been made is a corporation organized or existing under the laws of
the United States, any state thereof or the District of Columbia; (b) the Person
formed by or surviving any such consolidation or merger (if other than the
Company) or the Person to which such sale, assignment, transfer, lease,
conveyance or other disposition shall have been made assumes all the obligations
of the Company under the Notes and this Indenture pursuant to a supplemental
indenture in a form reasonably satisfactory to the Trustee; (c) immediately
after such transaction no Default or Event of Default exists; and (d) the
Company or any Person formed by or surviving any such consolidation or merger,
or to which such sale, assignment, transfer, lease, conveyance or other
disposition shall have been made will, at the time of such transaction and after
giving pro forma effect thereto, be permitted to incur at least $1.00 of
additional Indebtedness pursuant to the first paragraph of Section 4.09 hereof.

SECTION 5.02.   SUCCESSOR CORPORATION SUBSTITUTED.

           Upon any consolidation or merger, or any sale, assignment, transfer,
lease, conveyance or other disposition of all or substantially all of the assets
of the Company or the Company and its Subsidiaries on a consolidated basis in
accordance with Section 5.01 hereof, the successor corporation formed by such
consolidation or into or with which the Company is merged or to which such sale,
assignment, transfer, lease, conveyance or other disposition is made shall
succeed to, and be substituted for (so that from and after the date of such
consolidation, merger, sale, lease, conveyance or other disposition, the
provisions of this Indenture referring to the "Company" shall refer instead to
the successor corporation and not to the Company), 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; provided, however, that
the predecessor Company shall not be relieved from the obligation to pay the
principal of and interest on the Notes except in the case of a sale of all of
the Company's assets that meets the requirements of Section 5.01 hereof.


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                                    ARTICLE 6
                           CERTAIN DEFAULT PROVISIONS

SECTION 6.01.   EVENTS OF DEFAULT.

           An "Event of Default" occurs if:

                (a) the Company and the Guarantors default in the payment of
      interest on the Notes (whether or not prohibited by the subordination
      provisions of Article 10 or Article 11 hereof, as the case may be) when
      the same becomes due and payable and such default continues for a period
      of 30 days;

                (b) the Company and the Guarantors default in the payment of
      principal of or premium, if any, on the Notes (whether or not prohibited
      by the subordination provisions of Article 10 or Article 11 hereof, as the
      case may be) when the same becomes due and payable at maturity, upon
      redemption (including in connection with an offer to purchase) or
      otherwise;

                (c)   the Company fails to comply with the provisions of 
      Section 4.14 hereof;

                (d) the Company or the Guarantors fail to comply with any of
      their other respective agreements or covenants in, or provisions of, the
      Notes, the Subsidiary Guarantees or this Indenture and the Default
      continues for the period and after the notice specified below;

                (e) a default occurs under any mortgage, indenture or instrument
      under which there may be issued or by which there may be secured or
      evidenced any Indebtedness for money borrowed by the Company or any of its
      Restricted Subsidiaries (or the payment of which is Guaranteed by the
      Company or any of its Restricted Subsidiaries), whether such Indebtedness
      or Guarantee now exists or shall be created hereafter if (i) such default
      results in the acceleration of such Indebtedness prior to its express
      maturity or shall constitute a default in the payment of such Indebtedness
      at final maturity of such Indebtedness and (ii) the principal amount of
      such Indebtedness that has been accelerated or not paid at maturity,
      together with the principal amount of any other Indebtedness that has been
      accelerated or not paid at maturity, exceeds $5.0 million;

                (f) a final judgment or final judgments for the payment of money
      are entered by a court or courts of competent jurisdiction against the
      Company or any of its Restricted Subsidiaries and such judgments remain
      unpaid, undischarged or unstayed for a period of 60 days, provided that
      the aggregate of all such unpaid, undischarged or unstayed judgments
      exceeds $5.0 million;

                (g) except as otherwise permitted hereunder, any Subsidiary
      Guarantee issued by a Guarantor shall be held in any judicial proceeding
      to be unenforceable or invalid or shall cease for any reason to be in full
      force and effect or any Guarantor (or its successors or


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      assigns), or any Person acting on behalf of any Guarantor (or its
      successors or assigns), shall deny or disaffirm its obligations in writing
      under its Subsidiary Guarantee;

                (h)   the Company or any of its Restricted Subsidiaries that is
      a Significant Subsidiary:

                      (i)  commences a voluntary case,

                      (ii) consents to the entry of an order for relief against
           it in an involuntary case,

                      (iii) consents to the appointment of a Custodian of it or
           for all or substantially all of its property,

                      (iv) makes a general assignment for the benefit of its 
           creditors, or

                      (v)  admits in writing its inability generally to pay its
           debts as the same become due, in each case, pursuant to or within 
           the meaning of any Bankruptcy Law; or

                (i) a court of competent jurisdiction enters an order or decree
      under any Bankruptcy Law that:

                      (i)  is for relief against the Company or any Restricted 
           Subsidiary that is a Significant Subsidiary of the Company in an 
           involuntary case,

                      (ii) appoints a Custodian of the Company or any Restricted
           Subsidiary that is a Significant Subsidiary of the Company or for all
           or substantially all of the property of the Company or any Restricted
           Subsidiary that is a Significant Subsidiary of the Company, or

                      (iii)orders the liquidation of the Company or any 
           Restricted Subsidiary that is a Significant Subsidiary of the 
           Company, and such order or decree remains unstayed and in effect for
           60 consecutive days.

           A Default under clause (d) is not an Event of Default until the
Trustee notifies the Company, or the Holders of at least 25% in principal amount
of the then outstanding Notes notify the Company and the Trustee, of the Default
and the Company does not cure the Default within 60 days after receipt of the
notice. The notice must specify the Default, demand that it be remedied and
state that the notice is a "Notice of Default."

           In the case of any Event of Default pursuant to the provisions of
this Section 6.01 occurring by reason of any willful action (or inaction) taken
(or not taken) by or on behalf of the Company with the intention of avoiding
payment of the premium that the Company would have 


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had to pay if the Company then had elected to redeem the Notes pursuant to
Section 3.07 hereof,an equivalent premium shall also become and be immediately
due and payable to the extent permitted by law upon acceleration of the Notes as
provided below, anything in this Indenture or in the Notes to the contrary
notwithstanding. If an Event of Default occurs prior to ______, [2004] by reason
of any willful action (or inaction) taken (or not taken) by or on behalf of the
Company with the intention of avoiding the prohibition on redemption of the
Notes prior to ______, [2004] pursuant to Section 3.07 hereof, then the premium
payable for purposes of this paragraph for each of the years beginning on ______
of the years set forth below shall be as set forth in the following table
expressed as a percentage of the amount that would otherwise be due but for the
provisions of this sentence, plus accrued interest, if any, to the date of
payment:

              Year                                      Percentage

              1996......................................    ___%
              1997......................................    ___%
              1998......................................    ___%
              1999......................................    ___%
              2000......................................    ___%
              2001......................................    ___%
              2002......................................    ___%
              2003......................................    ___%
              2004......................................    ___%

SECTION 6.02.   ACCELERATION.

           If an Event of Default (other than an Event of Default specified in
clauses (h)(i) through (h)(iv) and (i) of Section 6.01 hereof relating to the
Company or any Significant Subsidiary) occurs and is continuing, the Trustee by
notice to the Company, or the Holders of at least 25% in principal amount of the
then outstanding Notes by notice to the Company and the Trustee may declare the
unpaid principal of and any accrued interest on all the Notes to be due and
payable. Upon such declaration the principal and interest shall be due and
payable immediately (together with the premium referred to in Section 6.01
hereof, if applicable); provided, however, that if any Obligation with respect
to Senior Bank Debt is outstanding pursuant to the Credit Agreement upon a
declaration of acceleration of the Notes, the principal, premium, if any, and
interest on the Notes will not be payable until the earlier of (1) the day which
is five Business Days after written notice of acceleration is received by the
Company and the Credit Agent, and (2) the date of acceleration of the
Indebtedness under the Credit Agreement. If an Event of Default specified in
clauses (h)(i) through (h)(iv) or (i) of Section 6.01 hereof relating to the
Company or any Significant Subsidiary occurs, such an amount shall ipso facto
become and be immediately due and payable without any declaration or other act
on the part of the Trustee or any Holder. In the event of a declaration of
acceleration of the Notes because an Event of Default has occurred and is
continuing as a result of the acceleration of any Indebtedness described in
Section 6.01(e) hereof, the declaration of acceleration of the Notes shall be
automatically annulled if the holders of any Indebtedness described in Section
6.01(e) have rescinded the declaration of acceleration in respect of such
Indebtedness within 30 days of the date of such declaration and if (a) the


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annulment of the acceleration of the Notes would not conflict with any judgment
or decree of a competent jurisdiction, and (b) all existing Events of Default,
except non-payment of principal or interest on the Notes that became due solely
because of the acceleration of the Notes, have been cured or waived.

SECTION 6.03.   OTHER REMEDIES.

           If an Event of Default occurs and is continuing, the Trustee may
pursue any available remedy to collect the payment of principal, premium, if
any, and interest on the Notes or to enforce the performance of any provision of
the Notes or this Indenture.

           The Trustee may maintain a proceeding even if it does not possess any
of the Notes or does not produce any of them in the proceeding. A delay or
omission by the Trustee or any Holder of a Note in exercising any right or
remedy upon an Event of Default shall not impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. All remedies are
cumulative to the extent permitted by law.

SECTION 6.04.   WAIVER OF PAST DEFAULTS.

           Holders of not less than a majority in aggregate principal amount of
the Notes then outstanding by notice to the Trustee may on behalf of the Holders
of all of the Notes waive an existing Default or Event of Default and its
consequences hereunder, except a continuing Default or Event of Default in the
payment of the principal of, premium, if any, or interest on, the Notes
(including in connection with an offer to purchase) (provided, however, that the
Holders of a majority in aggregate principal amount of the then outstanding
Notes may rescind an acceleration and its consequences, including any related
payment default that resulted from such acceleration). 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 6.05.   CONTROL BY MAJORITY.

           Holders of a majority in principal amount of the then outstanding
Notes may direct the time, method and place of conducting any proceeding for
exercising any remedy available to the Trustee or exercising any trust or power
conferred on it. However, the Trustee may refuse to follow any direction that
conflicts with law or this Indenture that the Trustee determines may be unduly
prejudicial to the rights of other Holders of Notes or that may involve the
Trustee in personal liability.

SECTION 6.06.   LIMITATION ON SUITS.

           A Holder of a Note may pursue a remedy with respect to this Indenture
or the Notes if, and only if:


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                (a) the Holder of a Note gives to the Trustee written notice of
      a continuing Event of Default or the Trustee receives such notice from the
      Company;

                (b) the Holders of at least 25% in principal amount of the then
      outstanding Notes make a written request to the Trustee to pursue the
      remedy;

                (c) such Holder of a Note or Holders of Notes offer and, if
      requested, provide to the Trustee indemnity satisfactory to the Trustee
      against any loss, liability or expense;

                (d) the Trustee does not comply with the request within 60 days
      after receipt of the request and the offer and, if requested, the
      provision of indemnity; and

                (e) during such 60-day period the Holders of a majority in
      principal amount of the then outstanding Notes do not give the Trustee a
      direction inconsistent with the request.

A Holder of a Note may not use this Indenture to prejudice the rights of another
Holder of a Note or to obtain a preference or priority over another Holder of a
Note. Nothing contained in this Section 6.06 shall affect the right of a Holder
of a Note to sue for enforcement of any overdue payment thereon.

SECTION 6.07.   RIGHTS OF HOLDERS OF NOTES TO RECEIVE PAYMENT.

           Subject to Articles 10 and 11 hereof, notwithstanding any other
provision of this Indenture, the right of any Holder of a Note to receive
payment of principal of, premium, if any, and interest on the Note, on or after
the respective due dates expressed in the Note (including in connection with a
Purchase Offer), or to bring suit for the enforcement of any such payment on or
after such respective dates, shall not be impaired or affected without the
consent of such Holder.

SECTION 6.08.   COLLECTION SUIT BY TRUSTEE.

           If an Event of Default specified in Section 6.01(a) or (b) hereof
occurs and is continuing, the Trustee is authorized to recover judgment in its
own name and as trustee of an express trust against the Company for the whole
amount of principal of, premium, if any, and interest remaining unpaid on the
Notes and interest on overdue principal and, to the extent lawful, interest and
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.

SECTION 6.09.   TRUSTEE MAY FILE PROOFS OF CLAIM.

           The Trustee is authorized to file such proofs of claim and other
papers or documents as may be necessary or advisable in order to have the claims
of the Trustee (including any claim for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel) and the
Holders of the Notes allowed in any judicial proceedings relative to the Company


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(or any other obligor upon the Notes, including the Guarantors), its creditors
or its property and shall be entitled and empowered to collect, receive and
distribute any money or other property payable or deliverable on any such claims
and any custodian in any 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 to 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 7.07 hereof. To the extent that the
payment of any such compensation, expenses, disbursements and advances of the
Trustee, its agents and counsel, and any other amounts due the Trustee under
Section 7.07 hereof out of the estate in any such proceeding, shall be denied
for any reason, payment of the same shall be secured by a Lien on, and shall be
paid out of, any and all distributions, dividends, money, securities and other
properties that the Holders may be entitled to receive in such proceeding
whether in liquidation or under any plan of reorganization or arrangement or
otherwise. Nothing herein contained 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 Notes or
the rights of any Holder, or to authorize the Trustee to vote in respect of the
claim of any Holder in any such proceeding.

SECTION 6.10.   PRIORITIES.

           If the Trustee collects any money pursuant to this Article, it shall
pay out the money in the following order:

                First:  to the Trustee, its agents and attorneys for amounts
      due under Section 7.07 hereof, including payment of all compensation, 
      expense and liabilities incurred, and all advances made, by the Trustee 
      and the costs and expenses of collection;

                Second:  to the holders of Senior Debt of the Company or the 
      Restricted Subsidiaries, as the case may be, to the extent required by 
      Article 10 or Article 11 hereof, as applicable;

                Third:  to Holders of Notes for amounts due and unpaid on the 
      Notes for principal, premium, if any, and interest, ratably, without 
      preference or priority of any kind, according to the amounts due and 
      payable on the Notes for principal, premium, if any, and interest,
      respectively; and

                Fourth:  to the Company or to such party as a court of 
      competent jurisdiction shall direct.

           The Trustee may fix a record date and payment date for any payment to
Holders of Notes pursuant to this Section 6.10.


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SECTION 6.11.   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 or omitted by
it as a Trustee, a court in its discretion may require the filing by any party
litigant in the suit of an undertaking to pay the costs of the suit, and the
court in its discretion may assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in the suit, having due regard to
the merits and good faith of the claims or defenses made by the party litigant.
This Section does not apply to a suit by the Trustee, a suit by a Holder of a 
Note pursuant to Section 6.07 hereof, or a suit by Holders of more than 10% in 
principal amount of the then outstanding Notes.


                                    ARTICLE 7
                                     TRUSTEE

SECTION 7.01.   DUTIES OF TRUSTEE.

           (a) If an Event of Default has occurred and is continuing, the
Trustee shall exercise such of the rights and powers vested in it by this
Indenture, and use the same degree of care and skill in its exercise, as a
prudent man would exercise or use under the circumstances in the conduct of his
own affairs.

           (b)  Except during the continuance of an Event of Default:

                (i) the duties of the Trustee shall be determined solely by the
      express provisions of this Indenture and the Trustee need perform only
      those duties that are specifically set forth in this Indenture and no
      others, and no implied covenants or obligations shall be read into this
      Indenture against the Trustee; and

                (ii) in the absence of bad faith on its part, the Trustee may
      conclusively rely, as to the truth of the statements and the correctness
      of the opinions expressed therein, upon certificates or opinions furnished
      to the Trustee and conforming to the requirements of this Indenture.
      However, the Trustee shall examine the certificates and opinions to
      determine whether or not they conform to the requirements of this
      Indenture.

           (c) The Trustee may not be relieved from liability for its own
negligent action, its own negligent failure to act, or its own willful
misconduct, except that:

                (i)   this paragraph does not limit the effect of paragraph (b)
      of this Section;

                (ii) the Trustee shall not be liable for any error of judgment
      made in good faith by a Responsible Officer, unless it is proved that the
      Trustee was negligent in ascertaining the pertinent facts; and


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                (iii) the Trustee shall not be liable with respect to any action
      it takes or omits to take in good faith in accordance with a direction
      received by it pursuant to Section 6.05 hereof.

           (d) Whether or not therein expressly so provided, every provision of
this Indenture that in any way relates to the Trustee is subject to paragraphs
(a), (b), and (c) of this Section.

           (e)  No provision of this Indenture shall require the Trustee to 
expend or risk its own funds or incur any liability.  The Trustee shall be
under no obligation to exercise any of its rights and powers under this
Indenture at the request of any Holders, unless such Holder shall have offered
to the Trustee security and indemnity satisfactory to it against any loss,
liability or expense.

           (f) The Trustee shall not be liable for interest on any money
received by it except as the Trustee may agree in writing with the Company.
Money held in trust by the Trustee need not be segregated from other funds
except to the extent required by law.

           (g) Except with respect to Sections 4.01 and 4.04 herein, the Trustee
shall have no duty to inquire as to the performance of the Company's covenants
in Article 4 hereof. In addition, the Trustee shall not be deemed to have
knowledge of any Default or Event of Default except (i) any Event of Default
occurring pursuant to Sections 6.01(a), 6.01(b), 4.01 and 4.04 herein or (ii)
any Default or Event of Default of which the Trustee shall have received written
notification or obtained actual knowledge.

SECTION 7.02.   RIGHTS OF TRUSTEE.

           (a) The Trustee may conclusively rely upon any document believed by
it to be genuine and to have been signed or presented by the proper Person. The
Trustee need not investigate any fact or matter stated in the document.

           (b) Before the Trustee acts or refrains from acting, it may require
an Officers' Certificate or an Opinion of Counsel or both. The Trustee shall not
be liable for any action it takes or omits to take in good faith in reliance on
such Officers' Certificate or Opinion of Counsel. The Trustee may consult with
counsel and the written advice of such counsel or any Opinion of Counsel shall
be full and complete authorization and protection from liability in respect of
any action taken, suffered or omitted by it hereunder in good faith and in
reliance thereon.

           (c) The Trustee may act through its attorneys and agents and shall
not be responsible for the misconduct or negligence of any agent appointed with
due care.

           (d) The Trustee shall not be liable for any action it takes or omits
to take in good faith that it believes to be authorized or within the rights or
powers conferred upon it by this Indenture.

           (e) Unless otherwise specifically provided in this Indenture, any
demand, request, direction or notice from the Company shall be sufficient if
signed by an Officer of the Company.


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           (f) 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 unless such Holders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities
that might be incurred by it in compliance with such request or direction.

SECTION 7.03.   INDIVIDUAL RIGHTS OF TRUSTEE.

           The Trustee in its individual or any other capacity may become the
owner or pledgee of Notes and may otherwise deal with the Company, any
Restricted Subsidiary or any Affiliate of the Company or any Restricted
Subsidiary with the same rights it would have if it were not Trustee. However,
in the event that the Trustee acquires any conflicting interest it must
eliminate such conflict within 90 days, apply to the SEC for permission to
continue as trustee or resign. Any Agent may do the same with like rights and
duties. The Trustee is also subject to Sections 7.10 and 7.11 hereof.

SECTION 7.04.   TRUSTEE'S DISCLAIMER.

           The Trustee shall not be responsible for and makes no representation
as to the validity or adequacy of this Indenture or the Notes, it shall not be
accountable for the Company's use of the proceeds from the Notes or any money
paid to the Company or upon the Company's direction under any provision of this
Indenture, it shall not be responsible for the use or application of any money
received by any Paying Agent other than the Trustee, and it shall not be
responsible for any statement or recital herein or any statement in the Notes or
any other document in connection with the sale of the Notes or pursuant to this
Indenture other than its certificate of authentication.

SECTION 7.05.   NOTICE OF DEFAULTS.

           If a Default or Event of Default occurs and is continuing and if it
is known to the Trustee, the Trustee shall mail to the Holders of the Notes a
notice of the Default or Event of Default within 90 days after it occurs. Except
in the case of a Default or Event of Default in payment of principal of,
premium, if any, or interest on any Note, the Trustee may withhold the notice if
and so long as a committee of its Responsible Officers in good faith determines
that withholding the notice is in the interests of the Holders of the Notes.

SECTION 7.06.   REPORTS BY TRUSTEE TO HOLDERS OF THE NOTES.

           Within 60 days after each May 15 beginning with the May 15 following
the date of this Indenture, and for so long as Notes remain outstanding, the
Trustee shall mail to the Holders of the Notes a brief report dated as of such
reporting date that complies with TIA ss. 313(a) (but if no event described in
TIA ss. 313(a) has occurred within the twelve months preceding the reporting
date, no report need be transmitted). The Trustee also shall comply with TIA ss.
313(b)(2). The Trustee shall also transmit by mail all reports as required by
TIA ss. 313(c).

           A copy of each report at the time of its mailing to the Holders of
Notes shall be mailed to the Company and filed with the SEC and each stock
exchange on which the Notes are listed in 


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accordance with TIA ss. 313(d). The Company shall promptly notify the Trustee 
when the Notes are listed on any stock exchange.

SECTION 7.07.   COMPENSATION AND INDEMNITY.

           The Company and the Restricted Subsidiaries shall pay to the Trustee
from time to time reasonable compensation for its acceptance of this Indenture
and services hereunder. The Trustee's compensation shall not be limited by any
law on compensation of a trustee of an express trust. The Company and the
Restricted Subsidiaries shall reimburse the Trustee promptly upon request for
all reasonable disbursements, advances and expenses incurred or made by it in
addition to the compensation for its services. Such expenses shall include the
reasonable compensation, disbursements and expenses of the Trustee's agents and
counsel.

           The Company and the Restricted Subsidiaries shall indemnify the
Trustee against any and all losses, liabilities or expenses incurred by it
arising out of or in connection with the acceptance or administration of its
duties under this Indenture, including the costs and expenses of enforcing this
Indenture against the Company and the Restricted Subsidiaries (including this
Section 7.07), and defending itself against any claim (whether asserted by the
Company, any Restricted Subsidiary or any Holder or any other person) or
liability in connection with the exercise or performance of any of its powers or
duties hereunder, except to the extent any such loss, liability or expense may
be attributable to its negligence or bad faith. The Trustee shall notify the
Company promptly of any claim for which it may seek indemnity. Failure by the
Trustee to so notify the Company shall not relieve the Company and the
Restricted Subsidiaries of their obligations hereunder. The Company and the
Restricted Subsidiaries shall defend the claim and the Trustee shall cooperate
in the defense. The Trustee may have separate counsel and the Company and the
Restricted Subsidiaries shall pay the reasonable fees and expenses of such
counsel. The Company and the Restricted Subsidiaries need not pay for any
settlement made without their consent, which consent shall not be unreasonably
withheld.

           The obligations of the Company and the Restricted Subsidiaries under
this Section 7.07 shall survive the satisfaction and discharge of this
Indenture.

           To secure the Company's and the Restricted Subsidiaries' payment
obligations in this Section, the Trustee shall have a Lien prior to the Notes on
all money or property held or collected by the Trustee, except that held in
trust to pay principal and interest on particular Notes. Such Lien shall survive
the satisfaction and discharge of this Indenture.

           When the Trustee incurs expenses or renders services after an Event
of Default specified in Section 6.01(h) or (i) hereof occurs, the expenses and
the compensation for the services (including the fees and expenses of its agents
and counsel) are intended to constitute expenses of administration under any
Bankruptcy Law.

           The Trustee shall comply with the provisions of TIA ss. 313(b)(2) to
the extent applicable.


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SECTION 7.08.   REPLACEMENT OF TRUSTEE.

           A resignation or removal of the Trustee and appointment of a
successor Trustee shall become effective only upon the successor Trustee's
acceptance of appointment as provided in this Section.

           The Trustee may resign in writing at any time and be discharged from
the trust hereby created by so notifying the Company. The Holders of Notes of a
majority in principal amount of the then outstanding Notes may remove the
Trustee by so notifying the Trustee and the Company in writing. The Company may
remove the Trustee if:

                (a)   the Trustee fails to comply with Section 7.10 hereof;

                (b)   the Trustee is adjudged a bankrupt or an insolvent or an
      order for relief is entered with respect to the Trustee under any 
      Bankruptcy Law;

                (c)   a Custodian or public officer takes charge of the Trustee
      or its property; or

                (d)   the Trustee becomes incapable of acting.

           If the Trustee resigns or is removed or if a vacancy exists in the
office of Trustee for any reason, the Company shall promptly appoint a successor
Trustee. Within one year after the successor Trustee takes office, the Holders
of a majority in principal amount of the then outstanding Notes may appoint a
successor Trustee to replace the successor Trustee appointed by the Company.

           If a successor Trustee does not take office within 60 days after the
retiring Trustee resigns or is removed, the retiring Trustee, the Company, any
Restricted Subsidiary, or the Holders of Notes of at least 10% in principal
amount of the then outstanding Notes may petition any court of competent
jurisdiction for the appointment of a successor Trustee.

           If the Trustee, after written request by any Holder of a Note who has
been a Holder of a Note for at least six months, fails to comply with Section
7.10 hereof, such Holder of a Note may petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

           A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Thereupon, the
resignation or removal of the retiring Trustee shall become effective, and the
successor Trustee shall have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee shall mail a notice of its
succession to Holders of the Notes. The retiring Trustee shall promptly transfer
all property held by it as Trustee to the successor Trustee, provided all sums
owing to the Trustee hereunder have been paid and subject to the Lien provided
for in Section 7.07 hereof. Notwithstanding replacement of the Trustee pursuant
to this Section 7.08, the Company's and the Restricted Subsidiaries' obligations
under Section 7.07 hereof shall continue for the benefit of the retiring
Trustee.


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SECTION 7.09.   SUCCESSOR TRUSTEE BY MERGER, ETC.

           If the Trustee consolidates, merges or converts into, or transfers
all or substantially all of its corporate trust business to, another
corporation, the successor corporation without any further act shall be the
successor Trustee.

SECTION 7.10.   ELIGIBILITY; DISQUALIFICATION.

           There shall at all times be a Trustee hereunder that is a corporation
organized and doing business under the laws of the United States of America or
of any state thereof that is authorized under such laws to exercise corporate
trustee power, that is subject to supervision or examination by federal or state
authorities and that has a combined capital and surplus of at least $50 million
as set forth in its most recent published annual report of condition.

           This Indenture shall always have a Trustee who satisfies the
requirements of TIA ss. 310(a)(1), (2) and (5). The Trustee is subject to TIA
ss. 310(b).

SECTION 7.11.   PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

           The Trustee is subject to TIA ss. 311(a), excluding any creditor
relationship listed in TIA ss. 311(b). A Trustee who has resigned or been
removed shall be subject to TIA ss. 311(a) to the extent indicated therein.


                                    ARTICLE 8
                    LEGAL DEFEASANCE AND COVENANT DEFEASANCE

SECTION 8.01.   OPTION TO EFFECT LEGAL DEFEASANCE OR COVENANT DEFEASANCE.

           The Company may, at the option of its Board of Directors evidenced by
a resolution set forth in an Officers' Certificate, at any time, elect to have
either Section 8.02 or 8.03 hereof be applied to all outstanding Notes upon
compliance with the conditions set forth below in this Article Eight.

SECTION 8.02.   LEGAL DEFEASANCE AND DISCHARGE.

           Upon the Company's exercise under Section 8.01 hereof of the option
applicable to this Section 8.02, each of the Company and the Guarantors, if any,
shall, subject to the satisfaction of the conditions set forth in Section 8.04
hereof, be deemed to have been discharged from its obligations with respect to
all outstanding Notes and Subsidiary Guarantees on the date the conditions set
forth below are satisfied (hereinafter, "Legal Defeasance"). For this purpose,
Legal Defeasance means that the Company shall be deemed to have paid and
discharged the entire Indebtedness represented by the outstanding Notes, which
shall thereafter be deemed to be "outstanding" only for the purposes of Section
8.05 hereof and the other Sections of this Indenture referred to in (a) and (b)
below, and to have satisfied all its other obligations under such Notes 


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and this Indenture (and the Trustee, on demand of and at the expense of the
Company, shall execute proper instruments acknowledging the same), except for
the following provisions which shall survive until otherwise terminated or
discharged hereunder: (a) the rights of Holders of outstanding Notes to receive
solely from the trust fund described in Section 8.04 hereof, and as more fully
set forth in such Section, payments in respect of the principal of, premium, if
any, and interest on such Notes when such payments are due, (b) the Company's
and Guarantors' obligations with respect to such Notes under Article 2 and
Section 4.02 hereof, (c) the rights, powers, trusts, duties and immunities of
the Trustee hereunder and the Company's and the Guarantors' obligations in
connection therewith and (d) this Article Eight. Subject to compliance with this
Article Eight, the Company may exercise its option under this Section 8.02
notwithstanding the prior exercise of its option under Section 8.03 hereof.

SECTION 8.03.   COVENANT DEFEASANCE.

           Upon the Company's exercise under Section 8.01 hereof of the option
applicable to this Section 8.03, each of the Company and the Guarantors, if any,
shall, subject to the satisfaction of the conditions set forth in Section 8.04
hereof, be released from its obligations under the covenants contained in
Sections 4.05, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.14, 4.15, 4.16, 4.17
and Article V hereof with respect to the outstanding Notes and Subsidiary
Guarantees on and after the date the conditions set forth below are satisfied
(hereinafter, "Covenant Defeasance"), and the Notes shall thereafter be deemed
not "outstanding" for the purposes of any direction, waiver, consent or
declaration or act of Holders (and the consequences of any thereof) in
connection with such covenants, but shall continue to be deemed "outstanding"
for all other purposes hereunder (it being understood that such Notes shall not
be deemed outstanding for accounting purposes). For this purpose, Covenant
Defeasance means that, with respect to the outstanding Notes, 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 covenant, whether directly or
indirectly, by reason of any reference elsewhere herein to any such covenant or
by reason of any reference in any such covenant to any other provision herein or
in any other document and such omission to comply shall not constitute a Default
or an Event of Default under Section 6.01 hereof, but, except as specified
above, the remainder of this Indenture, such Notes and the Subsidiary
Guarantees, if any, shall be unaffected thereby. In addition, upon the Company's
exercise under Section 8.01 hereof of the option applicable to this Section 8.03
hereof, subject to the satisfaction of the conditions set forth in Section 8.04
hereof, Sections 6.01(c) through 6.01(f) and Section 6.01(h) and 6.01(i) hereof
shall not constitute Events of Default.

SECTION 8.04.   CONDITIONS TO LEGAL OR COVENANT DEFEASANCE.

      The following shall be the conditions to the application of either Section
8.02 or 8.03 hereof to the outstanding Notes:

           In order to exercise either Legal Defeasance or Covenant Defeasance:

                (a) the Company must irrevocably deposit with the Trustee, in
      trust, for the benefit of the Holders, cash in United States dollars,
      non-callable Government Securities, or a


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      combination thereof, in such amounts as will be sufficient, in the opinion
      of a nationally recognized firm of independent public accountants, to pay
      the principal of, premium, if any, and interest on the outstanding Notes
      on the stated date for payment thereof or on the applicable redemption
      date, as the case may be, of such principal or installment of principal
      of, premium, if any, or interest on the outstanding Notes;

                (b) in the case of an election under Section 8.02 hereof, the
      Company shall have delivered to the Trustee an Opinion of Counsel in the
      United States (which counsel may be an employee of the Company or any
      Subsidiary of the Company) reasonably acceptable to the Trustee confirming
      that (A) the Company has received from, or there has been published by,
      the Internal Revenue Service a ruling or (B) since the Issuance Date,
      there has been a change in the applicable federal income tax law, in
      either case to the effect that, and based thereon such Opinion of Counsel
      shall confirm that, the Holders of the outstanding Notes will not
      recognize income, gain or loss for federal income tax purposes as a result
      of such Legal Defeasance 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 Legal Defeasance had not occurred;

                (c) in the case of an election under Section 8.03 hereof, the
      Company shall have delivered to the Trustee an Opinion of Counsel in the
      United States (which counsel may be an employee of the Company or any
      Subsidiary of the Company) reasonably acceptable to the Trustee confirming
      that the Holders of the outstanding Notes will not recognize income, gain
      or loss for federal income tax purposes as a result of such Covenant
      Defeasance 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 Covenant Defeasance had not occurred;

                (d) no Default or Event of Default shall have occurred and be
      continuing on the date of such deposit or, insofar as Sections 6.01(h) and
      6.01(i) hereof are concerned, at any time in the period ending on the 91st
      day after the date of deposit (or greater period of time in which any such
      deposit of trust funds may remain subject to Bankruptcy Law insofar as
      those apply to the deposit by the Company);

                (e) such Legal Defeasance or Covenant Defeasance shall not
      result in a breach or violation of, or constitute a default under, any
      material agreement or instrument (other than this Indenture) to which the
      Company or any of its Subsidiaries is a party or by which the Company or
      any of its Subsidiaries is bound;

                (f) the Company shall have delivered to the Trustee an Opinion
      of Counsel to the effect that after the 91st day following the deposit,
      the trust funds will not be subject to the effect of any applicable
      bankruptcy, insolvency, reorganization or similar laws affecting
      creditors' rights generally;

                (g) the Company shall have delivered to the Trustee an Officers'
      Certificate stating that the deposit was not made by the Company with the
      intent of preferring the Holders of


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      Notes over any other creditors of the Company with the intent of
      defeating, hindering, delaying or defrauding creditors of the Company or
      others; and

                (h) the Company shall have delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel, each stating that all conditions
      precedent provided for or relating to the Legal Defeasance or the Covenant
      Defeasance have been complied with.

SECTION 8.05.   DEPOSITED MONEY AND GOVERNMENT SECURITIES TO BE HELD IN TRUST; 
                OTHER MISCELLANEOUS PROVISIONS.

           Subject to Section 8.06 hereof, all money and non-callable Government
Securities (including the proceeds thereof) deposited with the Trustee (or other
qualifying trustee, collectively for purposes of this Section 8.05, the
"Trustee") pursuant to Section 8.04 hereof in respect of the outstanding Notes
shall be held in trust and applied by the Trustee, in accordance with the
provisions of such Notes and this Indenture, to the payment, either directly or
through any Paying Agent (including the Company acting as Paying Agent) as the
Trustee may determine, to the Holders of such Notes of all sums due and to
become due thereon in respect of principal, premium, if any, and interest, but
such money need not be segregated from other funds except to the extent required
by law.

           The Company and the Guarantors shall pay and indemnify the Trustee
against any tax, fee or other charge imposed on or assessed against the cash or
non-callable Government Securities deposited pursuant to Section 8.04 hereof 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 the
outstanding Notes.

           Anything in this Article Eight to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon the request
of the Company any money or non-callable Government Securities held by it as
provided in Section 8.04 hereof which, in the opinion of a nationally recognized
firm of independent public accountants expressed in a written certification
thereof delivered to the Trustee (which may be the opinion delivered under
Section 8.04(a) hereof), are in excess of the amount thereof that would then be
required to be deposited to effect an equivalent Legal Defeasance or Covenant
Defeasance.

SECTION 8.06.   REPAYMENT TO COMPANY.

           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, premium, if
any, or interest, if any, on any Note and remaining unclaimed for two years
after such principal, and premium, if any, or interest, if any, have become due
and payable shall be paid to the Company on its request or (if then held by the
Company) shall be discharged from such trust; and the Holder of such Note 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


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Company cause to be published once, in The New York Times and The Wall Street
Journal (national edition), 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 notification or publication, any unclaimed balance of such money
then remaining will be repaid to the Company.

SECTION 8.07.   REINSTATEMENT.

           If the Trustee or Paying Agent is unable to apply any United States
dollars or non-callable Government Securities in accordance with Section 8.02 or
8.03 hereof, as the case may be, by reason of any order or judgment of any court
or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's and the Restricted Subsidiaries' obligations
under this Indenture, the Notes and the Subsidiary Guarantees shall be revived
and reinstated as though no deposit had occurred pursuant to Section 8.02 or
8.03 hereof until such time as the Trustee or Paying Agent is permitted to apply
all such money in accordance with Section 8.02 or 8.03 hereof, as the case may
be; provided, however, that, if the Company and the Restricted Subsidiaries make
any payment of principal of, premium, if any, or interest, if any, on any Note
following the reinstatement of its obligations, the Company and the Restricted
Subsidiaries shall be subrogated to the rights of the Holders of such Notes to
receive such payment from the money held by the Trustee or Paying Agent.


                                    ARTICLE 9
                        AMENDMENT, SUPPLEMENT AND WAIVER

SECTION 9.01.   WITHOUT CONSENT OF HOLDERS OF NOTES.

           Notwithstanding Section 9.02 of this Indenture, the Company, the
Guarantors and the Trustee may amend or supplement this Indenture or the Notes
without the consent of any Holder of a Note:

                (a)   to cure any ambiguity, defect or inconsistency;

                (b)   to provide for uncertificated Notes in addition to or in 
      place of certificated Notes;

                (c) to provide for the assumption of the Company's or any
      Guarantor's obligations to the Holders of the Notes in the case of a
      merger or consolidation pursuant to Article Five or Article 11 hereof, as
      the case may be;

                (d) to make any change that would provide any additional rights
      or benefits to the Holders of the Notes (including providing for
      additional Subsidiary Guarantees pursuant to Section 4.13 hereof) or that
      does not materially adversely affect the legal rights hereunder of any
      Holder of the Note; or


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                (e) to comply with requirements of the SEC in order to effect or
      maintain the qualification of this Indenture under the TIA.

           Upon the request of the Company accompanied by a resolution of its
Board of Directors authorizing the execution of any such amended or supplemental
Indenture, and upon receipt by the Trustee of the documents described in Section
7.02 hereof, the Trustee shall join with the Company and the Guarantors in the
execution of any amended or supplemental Indenture authorized or permitted by
the terms of this Indenture and to make any further appropriate agreements and
stipulations that may be therein contained, but the Trustee shall not be
obligated to enter into such amended or supplemental Indenture that affects its
own rights, duties or immunities under this Indenture or otherwise.

SECTION 9.02.   WITH CONSENT OF HOLDERS OF NOTES.

           Except as provided below in this Section 9.02, the Company, the
Guarantors and the Trustee may amend or supplement this Indenture or the Notes
with the consent of the Holders of at least a majority in principal amount of
the Notes then outstanding (including consents obtained in connection with a
tender offer or exchange offer for the Notes), and, subject to Sections 6.04 and
6.07 hereof, any existing Default or Event of Default (other than a Default or
Event of Default in the payment of the principal of, premium, if any, or
interest on the Notes, except a payment default resulting from an acceleration
that has been rescinded) or compliance with any provision of this Indenture or
the Notes may be waived with the consent of the Holders of a majority in
principal amount of the then outstanding Notes (including consents obtained in
connection with a tender offer or exchange offer for the Notes).

           Upon the request of the Company accompanied by a resolution of its
Board of Directors authorizing the execution of any such amended or supplemental
Indenture, and upon the filing with the Trustee of evidence reasonably
satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid,
and upon receipt by the Trustee of the documents described in Section 7.02
hereof, the Trustee shall join with the Company and the Guarantors in the
execution of such amended or supplemental Indenture unless such amended or
supplemental Indenture affects the Trustee's own rights, duties or immunities
under this Indenture or otherwise, in which case the Trustee may in its
discretion, but shall not be obligated to, enter into such amended or
supplemental Indenture.

           It shall not be necessary for the consent of the Holders of Notes
under this Section 9.02 to approve the particular form of any proposed amendment
or waiver, but it shall be sufficient if such consent approves the substance
thereof.

           After an amendment, supplement or waiver under this Section becomes
effective, the Company shall mail to the Holders of Notes affected thereby a
notice briefly describing the amendment, supplement or waiver. Any failure of
the Company to mail such notice, or any defect therein, shall not, however, in
any way impair or affect the validity of any such amended or supplemental
Indenture or waiver. Subject to Sections 6.04 and 6.07 hereof, the Holders of a
majority in aggregate principal amount of the Notes then outstanding may waive
compliance in 


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a particular instance by the Company or any Guarantor with any provision of this
Indenture, the Note or the Subsidiary Guarantees. However, without the consent
of each Holder affected, an amendment or waiver may not (with respect to any
Notes held by a non-consenting Holder):

                (a)   reduce the principal amount of Notes whose Holders must 
      consent to an amendment, supplement or waiver;

                (b) reduce the principal of or change the fixed maturity of any
      Note or alter any of the provisions with respect to the redemption of the
      Notes in a manner adverse to the Holders of the Notes;

                (c)   reduce the rate of or change the time for payment of 
      interest, including default interest, on any Note;

                (d) waive a Default or Event of Default in the payment of
      principal of or premium, if any, or interest on the Notes (except a
      rescission of acceleration of the Notes by the Holders of at least a
      majority in aggregate principal amount of the then outstanding Notes and a
      waiver of the payment default that resulted from such acceleration);

                (e)   make any Note payable in money other than that stated in
      the Notes;

                (f) make any change in the provisions of this Indenture relating
      to waivers of past Defaults or the rights of Holders of Notes to receive
      payments of principal of or premium, if any, or interest on the Notes;

                (g) waive a redemption payment with respect to any Note (other
      than a payment required by Section 4.10 or Section 4.14 hereof);

                (h) except pursuant to Article 4, Article 8 and Article 11
      hereof, release any Guarantor from its obligations under its Subsidiary
      Guarantee, or change any Subsidiary Guarantee in any manner that would
      materially adversely affect the Holders; or

                (i) make any change in Section 6.04 or 6.07 hereof or in the
      foregoing amendment and waiver provisions.

SECTION 9.03.   COMPLIANCE WITH TRUST INDENTURE ACT.

           Every amendment or supplement to this Indenture or the Notes shall be
set forth in a amended or supplemental Indenture that complies with the TIA as
then in effect.

SECTION 9.04.   REVOCATION AND EFFECT OF CONSENTS.

           Until an amendment, supplement or waiver becomes effective, a consent
to it by a Holder of a Note is a continuing consent by the Holder of a Note and
every subsequent Holder of a Note or portion of a Note that evidences the same
debt as the consenting Holder's Note, even if notation


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of the consent is not made on any Note. However, any such Holder of a Note or
subsequent Holder of a Note may revoke the consent as to its Note if the Trustee
receives written notice of revocation before the date the waiver, supplement or
amendment becomes effective. An amendment, supplement or waiver becomes
effective in accordance with its terms and thereafter binds every Holder.

SECTION 9.05.   NOTATION ON OR EXCHANGE OF NOTES.

           The Trustee may place an appropriate notation about an amendment,
supplement or waiver on any Note thereafter authenticated. The Company in
exchange for all Notes may issue and the Trustee shall authenticate new Notes
(accompanied by a notation of the Subsidiary Guarantees duly endorsed by the
Restricted Subsidiaries) that reflect the amendment, supplement or waiver.

           Failure to make the appropriate notation or issue a new Note shall
not affect the validity and effect of such amendment, supplement or waiver.

SECTION 9.06.   TRUSTEE TO SIGN AMENDMENTS, ETC.

           The Trustee shall sign any amended or supplemental Indenture
authorized pursuant to this Article Nine if the amendment or supplement does not
adversely affect the rights, duties, liabilities or immunities of the Trustee.
The Company and the Guarantors may not sign an amendment or supplemental
Indenture until the Board of Directors of the Company and each of the Guarantors
approves it. In executing any amended or supplemental indenture, the Trustee
shall be entitled to receive and (subject to Section 7.01 hereof) shall be fully
protected in relying upon, an Officer's Certificate and an Opinion of Counsel
stating that the execution of such amended or supplemental indenture is
authorized or permitted by this Indenture.


                                   ARTICLE 10
                                  SUBORDINATION

SECTION 10.01.  AGREEMENT TO SUBORDINATE.

           The Company, the Trustee and each Holder by accepting a Note agrees,
that the indebtedness and obligations evidenced by the Note are subordinated in
right of payment, to the extent and in the manner provided in this Article, to
the prior payment in full, in cash, of all Obligations with respect to Senior
Debt of the Company (whether outstanding on the date hereof or hereafter
created, incurred, assumed or guaranteed), and that the subordination is for the
benefit of the holders of Senior Debt of the Company.

SECTION 10.02.  LIQUIDATION; DISSOLUTION; BANKRUPTCY.

           Upon any payment or distribution to creditors of the Company in a
liquidation or dissolution of the Company or in a bankruptcy, reorganization,
insolvency, receivership or similar


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proceeding relating to the Company or its property, in an assignment for the
benefit of creditors or any marshaling of the Company's assets and liabilities:

                (1) holders of Senior Debt of the Company shall be entitled to
      receive payment in full in cash of all Obligations due in respect of such
      Senior Debt of the Company (including interest after the commencement of
      any such proceeding at the rate specified in the applicable Senior Debt of
      the Company, whether or not allowed as a claim in such proceeding) before
      Holders shall be entitled to receive any payment or distribution from the
      Company with respect to the Notes; and

                (2) until all Obligations with respect to Senior Debt of the
      Company (as provided in subsection (1) above) are paid in full in cash,
      any payment or distribution to which the Trustee or any Holder would be
      entitled but for this Article shall be made to holders of Senior Debt of
      the Company, as their interests may appear.

SECTION 10.03.  DEFAULT ON DESIGNATED SENIOR DEBT.

           The Company may not make any payment or distribution upon or in
respect of the Notes, including, without limitation, by way of set-off or
otherwise, or redeem (or make a deposit in redemption of), defease or acquire
any of the Notes, for cash, properties or securities if:

                (i) a default in the payment of any principal, premium, if any,
      or interest or other Obligations (a "Payment Default") with respect to
      Senior Debt of the Company occurs and is continuing; or

                (ii) a default (other than a Payment Default) or any event that,
      after notice or passage of time would become a default (a "Non-Monetary
      Default"), on Senior Debt of the Company occurs and is continuing that
      then permits holders of the Senior Debt of the Company to accelerate its
      maturity and the Trustee receives a notice of the default (a "Payment
      Blockage Notice") from a Person who may give it pursuant to Section 10.11
      hereof. Any number of such Payment Blockage Notices may be given,
      provided, however, that (i) not more than one Payment Blockage Notice may
      be commenced during any period of 360 consecutive days and (ii) any
      Non-Monetary Default that existed or was continuing on the date of
      delivery of any such notice to the Trustee (to the extent the holder of
      Designated Senior Debt, or such trustee or agent, giving such Payment
      Blockage Notice had knowledge of the same) shall not be the basis for a
      subsequent Payment Blockage Notice, unless such default has been cured or
      waived for a period of not less than 90 days.

           The Company may and shall resume payments on and distributions in
respect of the Notes and all Obligations with respect thereto, and may acquire
such Notes or Obligations upon the earlier of:

                (1)   in the case of a payment default, the date upon which 
      such default is cured or waived, or


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                (2) in the case of a Non-Monetary Default, on the earlier of the
      date on which such Non-Monetary Default is cured or waived or 179 days
      after the date on which the applicable Payment Blockage Notice is
      received, if the maturity of such Senior Debt of the Company has not been
      accelerated,

if this Article 10 otherwise permits the payment, distribution or acquisition at
the time thereof.

SECTION 10.04.  ACCELERATION OF NOTES.

           If payment of the Notes is accelerated because of an Event of
Default, the Company shall promptly notify Representatives of the holders of
Senior Debt of the Company of the acceleration.

SECTION 10.05.  WHEN DISTRIBUTION MUST BE PAID OVER.

           In the event that the Trustee or any Holder receives from the Company
any payment of any Obligations with respect to the Notes at a time when the
Trustee or such Holder, as applicable, has actual knowledge that such payment is
prohibited by Section 10.02 or 10.03 hereof, such payment shall be held by the
Trustee or such Holder in trust for the benefit of, and shall be paid forthwith
over and delivered upon written request to, the holders of Senior Debt of the
Company, as their interests may appear, or their Representative under the
indenture or other agreement (if any) pursuant to which Senior Debt of the
Company may have been issued, as their respective interests may appear, for
application to the payment of all Obligations with respect to Senior Debt of the
Company remaining unpaid to the extent necessary to pay such Obligations in full
in accordance with their terms, after giving effect to any concurrent payment or
distribution to or for the holders of Senior Debt of the Company.

           With respect to the holders of Senior Debt of the Company, the
Trustee undertakes to perform only such obligations on the part of the Trustee
as are specifically set forth in this Article 10, and no implied covenants or
obligations with respect to the holders of Senior Debt of the Company shall be
read into this Indenture against the Trustee. The Trustee shall not be deemed to
owe any fiduciary duty to the holders of Senior Debt of the Company, and shall
not be liable to any such holders if the Trustee shall pay over or distribute to
or on behalf of Holders or the Company or any other Person money or assets to
which any holders of Senior Debt of the Company shall be entitled by virtue of
this Article 10, except if such payment is made as a result of the willful
misconduct or gross negligence of the Trustee.

SECTION 10.06.  NOTICE BY COMPANY.

           The Company shall promptly notify the Trustee and the Paying Agent of
any facts known to the Company that would cause a payment of any Obligations
with respect to the Notes to violate this Article, but failure to give such
notice shall not affect the subordination of the Notes to the Senior Debt of the
Company as provided in this Article.


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SECTION 10.07.  SUBROGATION.

           After all Obligations with respect to Senior Debt of the Company are
paid in full, in cash, and until the Notes are paid in full, Holders shall be
subrogated (equally and ratably with all other Indebtedness pari passu with the
Notes) to the rights of holders of Senior Debt of the Company to receive
distributions applicable to Senior Debt of the Company to the extent that
distributions otherwise payable to the Holders have been applied to the payment
of Senior Debt of the Company. A distribution made under this Article to holders
of Senior Debt of the Company that otherwise would have been made to Holders is
not, as between the Company and Holders, a payment by the Company on the Notes.

SECTION 10.08.  RELATIVE RIGHTS.

           This Article defines the relative rights of Holders and holders of
Senior Debt of the Company. Nothing in this Indenture shall:

                (1) impair, as between the Company and Holders, the obligation
      of the Company, which is absolute and unconditional, to pay principal of
      and interest on the Notes in accordance with their terms;

                (2) affect the relative rights of Holders and creditors of the
      Company other than their rights in relation to holders of Senior Debt of
      the Company; or

                (3) prevent the Trustee or any Holder from exercising its
      available remedies upon a Default or Event of Default, subject to the
      rights of holders and owners of Senior Debt of the Company to receive
      distributions and payments otherwise payable to Holders.

           If the Company fails because of this Article 10 to pay principal of,
premium or interest on a Note on the due date, the failure is still a Default or
Event of Default.

SECTION 10.09.  SUBORDINATION MAY NOT BE IMPAIRED BY COMPANY.

           No right of any holder of Senior Debt of the Company to enforce the
subordination of the Indebtedness evidenced by the Notes shall be impaired by
any act or failure to act by the Company or any Holder or by the failure of the
Company or any Holder to comply with this Indenture.

SECTION 10.10. DISTRIBUTION OR NOTICE TO REPRESENTATIVE.

           Whenever a distribution is to be made or a notice given to holders of
Senior Debt of the Company, the distribution may be made and the notice given to
their Representative.

           Upon any payment or distribution of assets of the Company referred to
in this Article 10, the Trustee and the Holders shall be entitled to rely upon
any order or decree made by any court of competent jurisdiction or upon any
certificate of such Representative or of the liquidating


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trustee or agent or other Person making any distribution to the Trustee or to
the Holders for the purpose of ascertaining the Persons entitled to participate
in such distribution, the holders of the Senior Debt of the Company and other
Indebtedness of the Company, the amount or amounts thereof or payable thereon,
the amount or amounts paid or distributed thereon and all other facts pertinent
thereto or to this Article 10.

SECTION 10.11.  RIGHTS OF TRUSTEE AND PAYING AGENT.

           Notwithstanding the provisions of this Article 10 or any other
provision of this Indenture, the Trustee shall not be charged with knowledge of
the existence of any facts that would prohibit the making of any payment or
distribution by the Trustee, and the Trustee and the Paying Agent may continue
to make payments on the Notes, unless the Trustee shall have received at its
Corporate Trust Office at least one Business Day prior to the date of such
payment a Payment Blockage Notice. Only the holders or the Representative of
holders of Designated Senior Debt of the Company may give a Payment Blockage
Notice. Nothing in this Article 10 shall impair the claims of, or payments to,
the Trustee under or pursuant to Section 7.07 hereof.

           The Trustee in its individual or any other capacity may hold Senior
Debt of the Company with the same rights it would have if it were not Trustee.
Any Agent may do the same with like rights.

SECTION 10.12.  AUTHORIZATION TO EFFECT SUBORDINATION.

           Each Holder of a Note by the Holder's acceptance thereof authorizes
and directs the Trustee on the Holder's behalf to take such action as may be
necessary or appropriate to effectuate the subordination as provided in this
Article 10, and appoints the Trustee to act as the Holder's attorney-in-fact for
any and all such purposes. If the Trustee does not file a proper proof of claim
or proof of debt in the form required in any proceeding referred to in Section
6.09 hereof at least 30 days before the expiration of the time to file such
claim, the Representatives of the Senior Debt of the Company are hereby
authorized to file an appropriate claim for and on behalf of the Holders of the
Notes.

SECTION 10.13.  AMENDMENTS.

           The provisions of this Article 10 shall not be amended or modified
without the written consent of the holders of all Senior Debt of the Company.


                                   ARTICLE 11
                              SUBSIDIARY GUARANTEES

SECTION 11.01.  SUBSIDIARY GUARANTEE.

            Each Subsidiary that is a signatory hereto and each Restricted
Subsidiary of the Company which in accordance with Section 4.13 hereof is
required to guarantee the obligations of the


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Company under the Notes (each, a "Guarantor"), upon execution of a counterpart
of this Indenture, hereby jointly and severally unconditionally guarantees to
each Holder of a Note authenticated and delivered by the Trustee irrespective of
the validity or enforceability of this Indenture, the Notes or the obligations
of the Company under this Indenture or the Notes, that: (i) the principal of and
interest on the Notes will be paid in full when due, whether at the maturity or
interest payment or mandatory redemption date, by acceleration, call for
redemption or otherwise, and interest on the overdue principal of and interest,
if any, on the Notes and all other obligations of the Company to the Holders or
the Trustee under this Indenture or the Notes will be promptly paid in full or
performed, all in accordance with the terms of this Indenture and the Notes; and
(ii) in case of any extension of time of payment or renewal of any Notes or any
of such other obligations, they will be paid in full when due or performed in
accordance with the terms of the extension or renewal, whether at maturity, by
acceleration or otherwise. Failing payment when due of any amount so guaranteed
for whatever reason, each Guarantor will be obligated to pay the same whether or
not such failure to pay has become an Event of Default which could cause
acceleration pursuant to Section 6.02 hereof. Each Guarantor agrees that this is
a guarantee of payment not a guarantee of collection.

           Each Guarantor hereby agrees that its obligations with regard to this
Subsidiary Guarantee shall be joint and several, unconditional, irrespective of
the validity or enforceability of the Notes or the obligations of the Company
under this Indenture, the absence of any action to enforce the same, the
recovery of any judgment against the Company or any other obligor with respect
to this Indenture, the Notes or the obligations of the Company under this
Indenture or the Notes, any action to enforce the same or any other
circumstances (other than complete performance) which might otherwise constitute
a legal or equitable discharge or defense of a Guarantor. Each Guarantor
further, to the extent permitted by law, waives and relinquishes all claims,
rights and remedies accorded by applicable law to guarantors and agrees not to
assert or take advantage of any such claims, rights or remedies, including but
not limited to: (a) any right to require the Trustee, the Holders or the Company
(each, a "Benefitted Party") to proceed against the Company or any other Person
or to proceed against or exhaust any security held by a Benefitted Party at any
time or to pursue any other remedy in any Benefitted Party's power before
proceeding against such Guarantor; (b) the defense of the statute of limitations
in any action hereunder or in any action for the collection of any Indebtedness
or the performance of any obligation hereby guaranteed; (c) any defense that may
arise by reason of the incapacity, lack of authority, death or disability of any
other Person or the failure of a Benefitted Party to file or enforce a claim
against the estate (in administration, bankruptcy or any other proceeding) of
any other Person; (d) demand, protest and notice of any kind including but not
limited to notice of the existence, creation or incurring of any new or
additional Indebtedness or obligation or of any action or non-action on the part
of such Guarantor, the Company, any Benefitted Party, any creditor of such
Guarantor, the Company or on the part of any other Person whomsoever in
connection with any Indebtedness or obligations hereby guaranteed; (e) any
defense based upon an election of remedies by a Benefitted Party, including but
not limited to an election to proceed against such Guarantor for reimbursement;
(f) any defense based upon any statute or rule of law which provides that the
obligation of a surety must be neither larger in amount nor in other respects
more burdensome than that of the principal; (g) any defense arising because of a
Benefitted Party's election, in any proceeding instituted under Bankruptcy Law,
of the application of 11 U.S.C. Section 1111(b)(2); or (h) any defense based on


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any borrowing or grant of a security interest under 11 U.S.C. Section 364. Each
Guarantor hereby covenants that its Subsidiary Guarantee will not be discharged
except by complete performance of the obligations contained in its Subsidiary
Guarantee and this Indenture.

           If any Holder or the Trustee is required by any court or otherwise to
return to either the Company or any Guarantor, or any Custodian acting in
relation to either the Company or such Guarantor, any amount paid by the Company
or such Guarantor to the Trustee or such Holder, the applicable Subsidiary
Guarantees, to the extent theretofore discharged, shall be reinstated and be in
full force and effect. Each Guarantor agrees that it will not be entitled to any
right of subrogation in relation to the Holders in respect of any obligations
guaranteed hereby until payment in full of all obligations guaranteed hereby.

           Each Guarantor further agrees that, as between such Guarantor, on the
one hand, and the Holders and the Trustee, on the other hand, (i) the maturity
of the obligations guaranteed hereby may be accelerated as provided in Section
6.02 hereof for the purposes of this Subsidiary Guarantee, notwithstanding any
stay, injunction or other prohibition preventing such acceleration as to the
Company or any other obligor on the Notes of the obligations guaranteed hereby,
and (ii) in the event of any declaration of acceleration of those obligations as
provided in Section 6.02 hereof, those obligations (whether or not due and
payable) will forthwith become due and payable by such Guarantor for the purpose
of this Subsidiary Guarantee.

SECTION 11.02.  SUBORDINATION.

           Each Guarantor, the Trustee, and each Holder by accepting a Note
agrees, that the Indebtedness evidenced by the Subsidiary Guarantees is
subordinated in right of payment, to the extent and in the manner provided in
this Article 11, to the prior payment in full, in cash, of all Obligations with
respect to Senior Debt of such Guarantor (whether outstanding on the date hereof
or hereafter created, incurred, assumed or guaranteed), and that the
subordination is for the benefit of the holders of Senior Debt of such
Guarantor.

SECTION 11.03.  LIQUIDATION; DISSOLUTION; BANKRUPTCY.

           Upon any payment or distribution to creditors of any Guarantor in a
liquidation or dissolution of such Guarantor or in a bankruptcy, reorganization,
insolvency, receivership or similar proceeding relating to such Guarantor or its
property, in an assignment for the benefit of creditors or any marshaling of
such Guarantor's assets and liabilities:

                (1) holders of Senior Debt of such Guarantor shall be entitled
      to receive payment in full in cash of all Obligations due in respect of
      such Senior Debt of such Guarantor (including interest after the
      commencement of any such proceeding at the rate specified in the
      applicable Senior Debt of such Guarantor, whether or not allowed as a
      claim in such proceeding) before the Holders shall be entitled to receive
      any payment or distribution from the Guarantor with respect to such
      Guarantor's Subsidiary Guarantee; and


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                (2) until all Obligations with respect to Senior Debt of such
      Guarantor (as provided in subsection (1) above) are paid in full in cash,
      any payment or distribution to which the Trustee or any Holder would be
      entitled but for this Article shall be made to holders of Senior Debt of
      such Guarantor, as their interests may appear.

SECTION 11.04.  DEFAULT ON SENIOR DEBT OF THE GUARANTOR.

           No Guarantor shall make any payment or distribution upon or in
respect of the Notes or its Subsidiary Guarantee, including, without limitation,
by way of set-off or otherwise, or redeem (or make a deposit in redemption of),
defease or acquire any of the Notes, for cash, properties or securities if:

                (i)   a Payment Default with respect to Senior Debt of such 
      Guarantor occurs and is continuing; or

                (ii) a Non-Monetary Default on Senior Debt of such Guarantor
      occurs and is continuing that then permits holders of the Senior Debt of
      such Guarantor to accelerate its maturity and the Trustee receives a
      Payment Blockage Notice from a Person who may give it pursuant to Section
      11.12 hereof. Any number of such Payment Blockage Notices may be given,
      provided, however, that (i) not more than one Payment Blockage Notice may
      be commenced during any period of 360 consecutive days and (ii) any
      default or event of default that existed or was continuing on the date of
      delivery of any Payment Blockage Notice to the Trustee (to the extent the
      holder of Designated Senior Debt, or such trustee or agent, giving such
      Payment Blockage Notice had knowledge of the same) shall not be the basis
      for a subsequent Payment Blockage Notice pursuant to Section 11.12 herein,
      unless such default has been cured or waived for a period of not less than
      90 consecutive days.

           Each Guarantor may and shall resume payments on and distributions in
respect of its Subsidiary Guarantee, the Notes and all Obligations with respect
thereto, and may acquire such Notes or Obligations upon the earlier of:

                (1)   in the case of a payment default, the date upon which 
      such default is cured or waived, or

                (2) in the case of a Non-Monetary Default, on the earlier of the
      date on which such Non-Monetary Default is cured or waived or 179 days
      after the date on which the applicable Payment Blockage Notice is
      received, if the maturity of such Senior Debt of such Guarantor has not
      been accelerated,

if this Article 11 otherwise permits the payment, distribution or acquisition at
the time thereof.


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SECTION 11.05.  ACCELERATION OF NOTES.

           If payment of the Notes is accelerated because of an Event of
Default, each Guarantor shall promptly notify the Representative of the holders
of Senior Debt of such Guarantor of the acceleration.

SECTION 11.06.  WHEN DISTRIBUTION MUST BE PAID OVER.

           In the event that the Trustee or any Holder receives from a Guarantor
any payment of any Obligations with respect to the Notes or the Subsidiary
Guarantees at a time when the Trustee or such Holder, as applicable, has actual
knowledge that such payment is prohibited by Section 11.03 or 11.04 hereof, such
payment shall be held by the Trustee or such Holder, in trust for the benefit
of, and shall be paid forthwith over and delivered upon written request to, the
holders of Senior Debt of such Guarantor, as their interests may appear, or
their Representative under the indenture or other agreement (if any) pursuant to
which Senior Debt of such Guarantor may have been issued, as their respective
interests may appear, for application to the payment of all Obligations with
respect to Senior Debt of such Guarantor remaining unpaid to the extent
necessary to pay such Obligations in full in accordance with their terms, after
giving effect to any concurrent payment or distribution to or for the holders of
Senior Debt of such Guarantor.

           With respect to the holders of Senior Debt of any Guarantor, the
Trustee undertakes to perform only such obligations on the part of the Trustee
as are specifically set forth in this Article 11, and no implied covenants or
obligations with respect to the holders of Senior Debt of such Guarantor shall
be read into this Indenture against the Trustee. The Trustee shall not be deemed
to owe any fiduciary duty to the holders of Senior Debt of such Guarantor, and
shall not be liable to any such holders if the Trustee shall pay over or
distribute to or on behalf of Holders or the Company or any other Person money
or assets to which any holders of Senior Debt of such Guarantor shall be
entitled by virtue of this Article 11, except if such payment is made as a
result of the willful misconduct or gross negligence of the Trustee.

SECTION 11.07.  NOTICE BY A GUARANTOR.

           Each Guarantor shall promptly notify the Trustee and the Paying Agent
of any facts known to such Guarantor that would cause a payment of any
Obligations with respect to the Notes or its Subsidiary Guarantee to violate
this Article, but failure to give such notice shall not affect the subordination
of its Subsidiary Guarantee or of the Notes to the Senior Debt of such Guarantor
as provided in this Article.

SECTION 11.08.  SUBROGATION.

           With respect to any Guarantor, after all Obligations with respect to
Senior Debt of such Guarantor is paid in full, in cash, and until the Notes are
paid in full, Holders shall be subrogated (equally and ratably with all other
Indebtedness pari passu with such Guarantor's Subsidiary Guarantee) to the
rights of holders of Senior Debt of such Guarantor to receive distributions
applicable to Senior Debt of such Guarantor to the extent that distributions
otherwise payable to


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the Holders have been applied to the payment of Senior Debt of such Guarantor. A
distribution made under this Article to holders of Senior Debt of such Guarantor
that otherwise would have been made to Holders is not, as between such Guarantor
and Holders, a payment by such Guarantor on the Notes or the Subsidiary
Guarantee.

SECTION 11.09.  RELATIVE RIGHTS.

           This Article defines the relative rights of Holders and holders of
Senior Debt of such Guarantor. Nothing in this Indenture shall:

                (1) impair, as between such Guarantor and the Holders, the
      obligation of such Guarantor, which is absolute and unconditional, to pay
      principal of and interest on the Notes in accordance with the terms of the
      Subsidiary Guarantee;

                (2) affect the relative rights of Holders and creditors of such
      Guarantor other than their rights in relation to holders of Senior Debt of
      such Guarantor; or

                (3) prevent the Trustee or any Holder from exercising its
      available remedies upon a Default or Event of Default, subject to the
      rights of holders of Senior Debt of such Guarantor set forth herein to
      receive distributions and payments otherwise payable to Holders.

           If any Guarantor fails because of this Article 11 to pay principal
of, premium or interest on a Note on the due date, the failure is still a
Default or Event of Default.

SECTION 11.10.  SUBORDINATION MAY NOT BE IMPAIRED BY ANY GUARANTOR.

           With respect to any Guarantor, no right of any holder of Senior Debt
of such Guarantor to enforce the subordination of the Indebtedness evidenced by
the Subsidiary Guarantee shall be impaired by any act or failure to act by such
Guarantor or any Holder or by failure of such Guarantor or any Holder to comply
with this Indenture.

SECTION 11.11.  DISTRIBUTION OR NOTICE TO REPRESENTATIVE.

           With respect to any Guarantor, whenever a distribution is to be made
or a notice given to holders of Senior Debt of such Guarantor, the distribution
may be made and the notice given to their Representative.

           Upon any payment or distribution of assets of any Guarantor referred
to in this Article 11, the Trustee and the Holders shall be entitled to rely
upon any order or decree made by any court of competent jurisdiction or upon any
certificate of such Representative or of the liquidating trustee or agent or
other Person making any distribution to the Trustee or to the Holders for the
purpose of ascertaining the Persons entitled to participate in such
distribution, the holders of the Senior Debt of such Guarantor and other
Indebtedness of such Guarantor, the amount or amounts thereof 


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or payable thereon, the amount or amounts paid or distributed thereon and all
other facts pertinent thereto or to this Article 11.

SECTION 11.12.  RIGHTS OF TRUSTEE AND PAYING AGENT.

           Notwithstanding the provisions of this Article 11 or any other
provision of this Indenture, the Trustee shall not be charged with knowledge of
the existence of any facts that would prohibit the making of any payment or
distribution by the Trustee, and the Trustee and the Paying Agent may continue
to make payments on the Notes, unless the Trustee shall have received at its
Corporate Trust Office at least one Business Day prior to the date of such
payment a Payment Blockage Notice. Only the Representative of holders of
Designated Senior Debt may give a Payment Blockage Notice. Nothing in this
Article 11 shall impair the claims of, or payments to, the Trustee under or
pursuant to Section 7.07 hereof.

           With respect to any Guarantor, the Trustee in its individual or any
other capacity may hold Senior Debt of such Guarantor with the same rights it
would have if it were not Trustee. Any Agent may do the same with like rights.

SECTION 11.13.  AUTHORIZATION TO EFFECT SUBORDINATION.

           Each Holder of a Note by the Holder's acceptance thereof authorizes
and directs the Trustee on the Holder's behalf to take such action as may be
necessary or appropriate to effectuate the subordination as provided in this
Article 11, and appoints the Trustee to act as the Holder's attorney-in-fact for
any and all such purposes. If the Trustee does not file a proper proof of claim
or proof of debt in the form required in any proceeding relative to any
Guarantor referred to in Section 6.09 hereof at least 30 days before the
expiration of the time to file such claim, the Representatives of Senior Debt of
such Guarantor are hereby authorized to file an appropriate claim for and on
behalf of the Holders of the Notes.

SECTION 11.14.  AMENDMENTS.

           With respect to any Guarantor, the provisions of Section 11.02
through 11.14 hereof shall not be amended or modified without the written
consent of the holders of all Senior Debt of such Guarantor.

SECTION 11.15.  LIMITATION OF GUARANTOR'S LIABILITY.

           Each Guarantor and, by its acceptance hereof, the Trustee and each
Holder hereby confirm that it is its intention that the Subsidiary Guarantee of
such Guarantor not constitute a fraudulent transfer or conveyance for purposes
of the Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform
Fraudulent Transfer Act or any similar federal or state law to the extent
applicable to any Subsidiary Guarantee. To effectuate the foregoing intention,
each such person hereby irrevocably agrees that the obligation of such Guarantor
under its Subsidiary Guarantee under this Article 11 shall be limited to the
maximum amount as will, after giving effect to such maximum amount and all other
(contingent or other) liabilities of such Guarantor that are relevant


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under such laws, and after giving effect to any collections from, rights to
receive contribution from or payments made by or on behalf of any other
Guarantor in respect of the obligations of such other Guarantor under this
Article 11, result in the obligations of such Guarantor in respect of such
maximum amount not constituting a fraudulent transfer or conveyance under said
laws. The Trustee and each Holder by accepting the benefits hereof, confirms its
intention that, in the event of a bankruptcy, reorganization or other similar
proceeding of the Company or any Guarantor in which concurrent claims are made
upon such Guarantor hereunder, to the extent such claims will not be fully
satisfied, each such claimant with a valid claim against the Company shall be
entitled to a ratable share of all payments by such Guarantor in respect of such
concurrent claims.

SECTION 11.16.  RESTRICTED SUBSIDIARIES MAY CONSOLIDATE, ETC., ON CERTAIN TERMS.

           No Guarantor shall consolidate with or merge with or into (whether or
not such Guarantor is the surviving Person), another Person whether or not it is
affiliated with such Guarantor unless (i) subject to the provisions of Section
11.17 hereof, the Person formed by or surviving any such consolidation or merger
(if other than such Guarantor) assumes all the obligations of such Guarantor
pursuant to a supplemental indenture in form reasonably satisfactory to the
Trustee, under its Subsidiary Guarantee, the Notes and this Indenture, (ii)
immediately after giving effect to such transaction, no Default or Event of
Default exists, and (iii) such Guarantor, or any Person formed by or surviving
any such consolidation or merger, will be permitted to incur, immediately after
giving effect to such transaction, at least $1.00 of additional Indebtedness
pursuant to the first paragraph of Section 4.09 hereof. In case of any such
consolidation, merger, sale or conveyance and upon the assumption by the
successor corporation, by supplemental indenture, executed and delivered to the
Trustee and satisfactory in form to the Trustee, of the Subsidiary Guarantee in
this Indenture and the due and punctual performance and observance of all of the
covenants and conditions of this Indenture to be performed by the Guarantor,
such successor corporation shall succeed to and be substituted for the Guarantor
with the same effect as if it had been named herein as a Guarantor.

SECTION 11.17.  RELEASES FOLLOWING SALE OF ASSETS OR DESIGNATION AS 
UNRESTRICTED SUBSIDIARY.

           In the event of (a) a sale or other disposition of all or
substantially all of the assets of any Guarantor, by way of merger,
consolidation or otherwise, or (b) a sale or other disposition of all of the
capital stock of any Guarantor, or (c) the designation of a Restricted
Subsidiary as an Unrestricted Subsidiary in accordance with the terms of Section
4.17 hereof, then such Guarantor (in the event of a sale or other disposition,
by way of such a merger, consolidation or otherwise, of all of the capital stock
of such Guarantor, or in the event of the designation of such Guarantor as an
Unrestricted Subsidiary) or the corporation acquiring the property (in the event
of a sale or other disposition of all or substantially all of the assets of such
Guarantor) shall be released and relieved of its obligations under its
Subsidiary Guarantee; provided that the Net Proceeds of such sale or other
disposition are applied in accordance with Section 4.10 hereof.


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                                   ARTICLE 12
                                  MISCELLANEOUS

SECTION 12.01.  TRUST INDENTURE ACT CONTROLS.

           If any provision of this Indenture limits, qualifies or conflicts
with the duties imposed by TIA ss.318(c), the imposed duties shall control.

SECTION 12.02.  NOTICES.

           Any notice or communication by the Company, the Restricted
Subsidiaries or the Trustee to the others is duly given if in writing and
delivered in Person or mailed by first class mail (registered or certified,
return receipt requested), telex, telecopier or overnight air courier
guaranteeing next day delivery, to the others' address:

           If to the Company or any Restricted Subsidiary:

                Iron Mountain Incorporated
                745 Atlantic Avenue
                Boston, MA 02111
                Attention:  President
                Telecopier No.:  (617) 350-7881

           With a copy to:

                Sullivan & Worcester LLP
                One Post Office Square
                Boston, MA  02109
                Telecopier No.:  (617) 338-2880
                Attention: William J. Curry, Esq.

           If to the Trustee:

                First Bank National Association
                c/o First Trust National Association
                180 East Fifth Street
                St. Paul, MN  55101
                Telecopier No.:  (612) 244-0711
                Attention:  Richard Prokosch, 2nd Floor


           The Company, the Restricted Subsidiaries or the Trustee, by notice to
the others may designate additional or different addresses for subsequent
notices or communications.


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           All notices and communications (other than those sent to Holders)
shall be deemed to have been duly given: at the time delivered by hand, if
personally delivered; five Business Days after being deposited in the mail,
postage prepaid, if mailed; when answered back, if telexed; when receipt
acknowledged, if telecopied; and the next Business Day after timely delivery to
the courier, if sent by overnight air courier guaranteeing next day delivery.

           Any notice or communication to a Holder shall be mailed by first
class mail, certified or registered, return receipt requested, or by overnight
air courier guaranteeing next day delivery to its address shown on the register
kept by the Registrar. Any notice or communication shall also be so mailed to
any Person described in TIA ss. 313(c), to the extent required by the TIA.
Failure to mail a notice or communication to a Holder or any defect in it shall
not affect its sufficiency with respect to other Holders.

           If a notice or communication is mailed in the manner provided above
within the time prescribed, it is duly given, whether or not the addressee
receives it.

           If the Company or any Restricted Subsidiary mails a notice or
communication to Holders, it shall mail a copy to the Trustee and each Agent at
the same time.

SECTION 12.03.  COMMUNICATION BY HOLDERS OF NOTES WITH OTHER HOLDERS OF NOTES.

           Holders may communicate pursuant to TIA ss. 312(b) with other Holders
with respect to their rights under this Indenture or the Notes. The Company, the
Restricted Subsidiaries, the Trustee, the Registrar and anyone else shall have
the protection of TIA ss. 312(c).

SECTION 12.04.  CERTIFICATE AND OPINION AS TO CONDITIONS PRECEDENT.

           Upon any request or application by the Company or the Restricted
Subsidiaries to the Trustee to take any action under this Indenture, the Company
or the Restricted Subsidiaries shall furnish to the Trustee:

           (a) an Officers' Certificate in form and substance reasonably
      satisfactory to the Trustee (which shall include the statements set forth
      in Section 12.05 hereof) stating that, in the opinion of the signers, all
      conditions precedent and covenants provided for in this Indenture relating
      to the proposed action have been satisfied; and

           (b) an Opinion of Counsel in form and substance reasonably
      satisfactory to the Trustee (which shall include the statements set forth
      in Section 12.05 hereof) stating that, in the opinion of such counsel, all
      such conditions precedent and covenants have been satisfied.

SECTION 12.05.  STATEMENTS REQUIRED IN CERTIFICATE OR OPINION.

           Each certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than a certificate
provided pursuant to TIA ss. 314(a)(4)) shall comply with the provisions of TIA
ss. 314(e) and shall include:


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                (a)   a statement that the Person making such certificate or 
      opinion has read such covenant or condition;

                (b) 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;

                (c) a statement that, in the opinion of such Person, he or she
      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 satisfied; and

                (d) a statement as to whether or not, in the opinion of such
      Person, such condition or covenant has been satisfied.

SECTION 12.06.  RULES BY TRUSTEE AND AGENTS.

           The Trustee may make reasonable rules for action by or at a meeting
of Holders. The Registrar or Paying Agent may make reasonable rules and set
reasonable requirements for its functions.

SECTION 12.07.  NO PERSONAL LIABILITY OF DIRECTORS, OFFICERS, EMPLOYEES AND 
STOCKHOLDERS.

           No past, present or future director, officer, employee, incorporator
or stockholder of the Company or any Restricted Subsidiary, as such, shall have
any liability for any obligations of the Company or any Restricted Subsidiary
under the Notes, the Subsidiary Guarantees, this Indenture or for any claim
based on, in respect of, or by reason of, such obligations or their creation.
Each Holder of Notes by accepting a Note and the related Subsidiary Guarantees
waives and releases all such liability. The waiver and release are part of the
consideration for issuance of the Notes and the Subsidiary Guarantees.

SECTION 12.08.  GOVERNING LAW.

           THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE
USED TO CONSTRUE THIS INDENTURE, THE NOTES AND THE SUBSIDIARY
GUARANTEES.

SECTION 12.09.  NO ADVERSE INTERPRETATION OF OTHER AGREEMENTS.

           This Indenture may not be used to interpret any other indenture, loan
or debt agreement of the Company or its Subsidiaries or of any other Person. Any
such indenture, loan or debt agreement may not be used to interpret this
Indenture.

SECTION 12.10.  SUCCESSORS.


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           All agreements of the Company and the Restricted Subsidiaries in this
Indenture and the Notes and the Subsidiary Guarantees, as the case may be, shall
bind their respective successors. All agreements of the Trustee in this
Indenture shall bind its successors.

SECTION 12.11.  SEVERABILITY.

           In case any provision in this Indenture, in the Notes or in the
Subsidiary Guarantees 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 12.12.  COUNTERPART ORIGINALS.

           The parties may sign any number of copies of this Indenture. Each
signed copy shall be an original, but all of them together represent the same
agreement.

SECTION 12.13.  TABLE OF CONTENTS, HEADINGS, ETC.

           The Table of Contents, Cross-Reference Table and Headings of the
Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not to be considered a part of this Indenture and shall in
no way modify or restrict any of the terms or provisions hereof.


                         [Signatures on following page]


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                                   SIGNATURES


Dated as of _________, 1996         IRON MOUNTAIN INCORPORATED


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


Dated as of _________, 1996         __________________________________,
                                    as Trustee


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


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


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                                    EXHIBIT A
                                 (Face of Note)

                     __% Senior Subordinated Notes due 2006
No.                                                                 $__________

                           IRON MOUNTAIN INCORPORATED

promises to pay to ____________________________________ or registered assigns,
the principal sum of ________________________________ Dollars on ______, 2006.

                  Interest Payment Dates: ________ and ________.
                  Record Dates:  ________ and ________.

                                               Dated: _______________ __, 1996

[Every Global Note authenticated and delivered hereunder will bear a legend in 
substantially the following form:]

                  [This Note is a Global Note within the meaning of the
Indenture hereinafter referred to and is registered in the name of a Depositary
or a nominee thereof. This Note may not be transferred to, or registered or
exchanged for Notes registered in the name of, any Person other than the
Depositary or a nominee thereof, and no such transfer may be registered, except
in the limited circumstances described in the Indenture. Every Note
authenticated and delivered upon registration of transfer of, or in exchange
for, or in lieu of, this Note will be a Global Note subject to the foregoing,
except in such limited circumstances.]

                                     IRON MOUNTAIN INCORPORATED

                                     By:____________________________________
                                        Name:
CUSIP No. __________                    Title:

                                     By:____________________________________
                                        Name:
                                        Title:
This is one of the Notes
referred to in the
within-mentioned Indenture:

First Bank National Association, as Trustee

By: _______________________
    Authorized Officer


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                                 (Back of Note)

                          __% SENIOR SUBORDINATED NOTE
                                    DUE 2006

                  Capitalized terms used herein have the meanings assigned to
them in the Indenture (as defined below) unless otherwise indicated.

                  1. Interest. Iron Mountain Incorporated, a Delaware
corporation (the "Company"), promises to pay interest on the principal amount of
this Note at the rate and in the manner specified below.

                  The Company shall pay in cash interest on the principal amount
of this Note at the rate per annum of __%. The Company will pay interest
semi-annually in arrears on ________ and ________ of each year, commencing on
________, 1997 or if any such day is not a Business Day (as defined in the
Indenture), on the next succeeding Business Day (each an "Interest Payment
Date"), to Holders of record on the immediately preceding ________ and
_________.

                  Interest will be computed on the basis of a 360-day year
consisting of twelve 30-day months. Interest shall accrue from the most recent
date to which interest has been paid or, if no interest has been paid, from the
date of the original issuance of the Notes. To the extent lawful, the Company
shall pay interest on overdue principal at the rate of 1% per annum in excess of
the then applicable interest rate on the Notes; it shall pay interest on overdue
installments of interest (without regard to any applicable grace periods) at the
same rate to the extent lawful.

                  2. Method of Payment. The Company will pay interest on the
Notes (except defaulted interest) to the Persons who are registered Holders of
Notes at the close of business on the record date next preceding the Interest
Payment Date, even if such Notes are canceled after such record date and on or
before such Interest Payment Date. The Company will pay principal and interest
in money of the United States that at the time of payment is legal tender for
payment of public and private debts. The Company, however, may pay principal,
premium, if any, and interest by check payable in such money. It may mail an
interest check to a Holder's registered address.

                  3.       Paying Agent and Registrar.  Initially, the Trustee
will act as Paying Agent and Registrar. The Company may change any Paying Agent,
Registrar or co-registrar without notice to any Holder. The Company or any
Restricted Subsidiary may act in any such capacity.

                  4. Indenture. The Company issued the Notes under an Indenture
dated as of ________, 1996 (the "Indenture") between the Company, the Restricted
Subsidiaries named therein and the Trustee. The terms of the Notes include those
stated in the Indenture and those made part of the Indenture by reference to the
Trust Indenture Act of 1939 (15 U.S. Code ss.ss. 77aaa-77bbbb) as in effect on
the date of the Indenture. The Notes are subject to all such terms, and Holders
of


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the Notes are referred to the Indenture and such act for a statement of such
terms. The terms of the Indenture shall govern any inconsistencies between the
Indenture and the Notes. The Notes are unsecured general obligations of the
Company limited to $___,000,000 in aggregate principal amount.

                  5. Optional Redemption. The Company shall not have the option
to redeem the Notes pursuant to Section 3.07 of the Indenture prior to
_________, 2001. Thereafter, the Company shall have the option to redeem the
Notes, in whole or in part, upon not less than 30 nor more than 60 days' notice,
at the redemption prices (expressed as percentages of the principal amount) set
forth below, plus accrued and unpaid interest thereon to the applicable
redemption date, if redeemed during the 12 month period beginning on ________ 15
of the years indicated below:

          Year                                                     Percentage

          2001.....................................................  ___.__%
          2002.....................................................  ___.__%
          2003.....................................................  ___.__%
          2004 and thereafter......................................  100.00%

                  Notwithstanding the foregoing, at any time prior to ________,
1999, the Company may redeem up to 35% of the initial principal amount of the
Notes originally issued with the net proceeds of one or more Qualified Equity
Offerings at a redemption price equal to ___% of the principal amount of such
Notes, plus accrued and unpaid interest, if any, to the date of redemption;
provided, that at least 65% of the principal amount of Notes originally issued
remains outstanding immediately after the occurrence of any such redemption and
that such redemption occurs within 60 days following the closing of any such
Qualified Equity Offering.

                  6. Mandatory Redemption. Except as described in paragraph 7
below, the Company shall not be required to make sinking fund or redemption
payments with respect to the Notes.

                  7. Redemption or Repurchase at Option of Holder.  This Note 
is subject to purchase at the option of the Holder upon the circumstances set 
forth in Section 3.09 and 4.14 of the Indenture.

                  8. Notice of Redemption. Notice of redemption shall be mailed
at least 30 days but not more than 60 days before the redemption date to each
Holder of Notes to be redeemed at its registered address. Notes may be redeemed
in part but only in whole multiples of $1,000, unless all of the Notes held by a
Holder are to be redeemed. On and after the redemption date, interest ceases to
accrue on Notes or portions of them called for redemption.

                  9. Subordination.  The Notes are subordinated to Senior Debt 
(as defined in the Indenture) (whether outstanding on the date of the Indenture
 or thereafter created, incurred,


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assumed or guaranteed) and all Obligations (as defined in the Indenture) with
respect thereto. To the extent provided in the Indenture, Senior Debt must be
paid in full in cash before the Notes may be paid. The Company agrees, and each
Holder by accepting a Note agrees, to the subordination and authorizes the
Trustee to give it effect.

                  10. Denominations, Transfer, Exchange. The Notes are in
registered form without coupons in denominations of $1,000 and integral
multiples of $1,000. The transfer of Notes may be registered and Notes may be
exchanged as provided in the Indenture. The Registrar and the Trustee may
require a Holder, among other things, to furnish appropriate endorsements and
transfer documents and to pay any taxes and fees required by law or permitted by
the Indenture. The Registrar need not exchange or register the transfer of any
Note or portion of a Note selected for redemption. Also, it need not exchange or
register the transfer of any Notes for a period of 15 days before a selection of
Notes to be redeemed, or during the period between a record date and the
corresponding Interest Payment Date.

                  11. Persons Deemed Owners. Prior to due presentment to the
Trustee for registration of the transfer of this Note, the Trustee, any Agent,
the Company and the Guarantors may deem and treat the Person in whose name this
Note is registered as its absolute owner for the purpose of receiving payment of
principal of, premium, if any, and interest on this Note and for all other
purposes whatsoever, whether or not this Note is overdue, and none of the
Trustee, any Agent, the Company or any Guarantor shall be affected by notice to
the contrary. The registered holder of a Note shall be treated as its owner for
all purposes.

                  12. Amendments and Waivers. Subject to certain exceptions, the
Indenture or the Notes may be amended with the consent of the Holders of at
least a majority in principal amount of the then outstanding Notes (including
consents obtained in connection with a tender offer or exchange offer for
Notes), and any existing default or compliance with any provision of the
Indenture or the Notes may be waived with the consent of the Holders of a
majority in principal amount of the then outstanding Notes (including consents
obtained in connection with a tender offer or exchange offer for Notes). Without
the consent of any Holder, the Indenture or the Notes may be amended to cure any
ambiguity, defect or inconsistency, to provide for uncertificated Notes in
addition to or in place of certificated Notes, to provide for assumption of the
Company's or any Restricted Subsidiary's obligations to Holders in the case of a
merger or consolidation or to make any change that would provide any additional
rights or benefits to the Holders or that does not adversely affect the rights
of any Holder under the Indenture or to comply with the requirements of the
Commission in order to effect or maintain the qualification of the Indenture
under the Trust Indenture Act.

                  13. Defaults and Remedies. Events of Default include: default
for 30 days in the payment when due of interest on the Notes (whether or not
prohibited by the subordination provisions of the Indenture); default in payment
when due of principal of or premium, if any, on the Notes (whether or not
prohibited by the subordination provisions of the Indenture); failure by the
Company to comply with Section 4.14 of the Indenture; failure by the Company or
the Restricted Subsidiaries for 60 days after notice from the Trustee or the
Holders of not less than


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25% of the aggregate principal amount of the Notes outstanding to comply with
any of its other agreements in the Indenture or the Notes; default under any
mortgage, indenture or instrument under which there may be issued or by which
there may be secured or evidenced any Indebtedness for money borrowed by the
Company or any of its Restricted Subsidiaries (or the payment of which is
guaranteed by the Company or any of its Restricted Subsidiaries) whether such
Indebtedness or Guarantee now exists, or is created after the date of the
Indenture, if (a) such default results in the acceleration of such Indebtedness
prior to its express maturity or shall constitute a default in the payment of
such Indebtedness at final maturity of such Indebtedness and (b) the principal
amount of such Indebtedness that has been accelerated or not paid at maturity,
together with the principal amount of any other Indebtedness that has been
accelerated or not paid at maturity, exceeds $5.0 million; failure by the
Company or any of its Subsidiaries to pay final judgments aggregating in excess
of $5.0 million, which judgments remain unpaid, undischarged or unstayed for a
period of 60 days; except as permitted by the Indenture, any Subsidiary
Guarantee issued by a Restricted Subsidiary shall be held in any judicial
proceeding to be unenforceable or invalid or shall cease for any reason to be in
full force and effect or any Restricted Subsidiary, or any Person acting on
behalf of any Restricted Subsidiary, shall deny or disaffirm its obligations
under its Subsidiary Guarantees; and certain events of bankruptcy or insolvency
with respect to the Company or any of its Subsidiaries. If any Event of Default
occurs and is continuing, the Trustee or the Holders of at least 25% in
principal amount of the then outstanding Notes may declare all the Notes to be
due and payable immediately, except that in the case of an Event of Default
arising from certain events of bankruptcy or insolvency, relating to the Company
or any Significant Subsidiary, all outstanding Notes will become due and payable
without further action or notice; provided, however, that if any Obligation with
respect to Senior Bank Debt is outstanding pursuant to the Credit Agreement upon
a declaration of acceleration of the Notes, the principal, premium, if any, and
interest on the Notes will not be payable until the earlier of (1) the day which
is five Business Days after written notice of acceleration is received by the
Company and the Credit Agent, and (2) the date of acceleration of the
Indebtedness under the Credit Agreement. Holders of the Notes may not enforce
the Indenture or the Notes except as provided in the Indenture. Subject to
certain limitations, Holders of a majority in principal amount of the then
outstanding Notes may direct the Trustee in its exercise of any trust or power.
The Trustee may withhold from Holders of the Notes notice of any continuing
Default or Event of Default (except a Default or Event of Default relating to
the payment of principal or interest) if it determines that withholding notice
is in their interest. The Company must furnish an annual compliance certificate
to the Trustee.

                  14. Subsidiary Guarantees. Payment of principal of, premium,
if any, and interest (including interest on overdue principal, premium, if any,
and interest, if lawful) on the Notes is guaranteed on an unsecured, senior 
subordinated basis by the Guarantors pursuant to Article 11 of the Indenture.

                  15. Trustee Dealings with Company. The Trustee under the
Indenture, in its individual or any other capacity, may make loans to, accept
deposits from, and perform services for the Company, any Restricted Subsidiary
or their respective Affiliates, and may otherwise deal with the Company, any
Restricted Subsidiary or their respective Affiliates, as if it were not Trustee.


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                  16. No Recourse Against Others. No past, present or future
director, officer, employee, incorporator or stockholder, as such, of the
Company or any Restricted Subsidiary shall have any liability for any
obligations of the Company or any Restricted Subsidiary under the Notes, the
Subsidiary Guarantees or the Indenture or for any claim based on, in respect of
or by reason of such obligations or their creation. Each Holder by accepting a
Note and the related Subsidiary Guarantees, if any, waives and releases all such
liability. The waiver and release are part of the consideration for the issuance
of the Notes.

                  17. Authentication. This Note shall not be valid until 
authenticated by the manual signature of the Trustee or an authenticating agent.

                  18. Abbreviations. Customary abbreviations may be used in the
name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT
(= tenants by the entireties), JT TEN (= joint tenants with right of
survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (=
Uniform Gifts to Minors Act).

                  19. CUSIP Numbers. Pursuant to a recommendation promulgated by
the Committee on Uniform Security Identification Procedures, the Company has
caused CUSIP numbers to be printed on the Notes and has directed the Trustee to
use CUSIP numbers in notices of redemption as a convenience to Holders. No
representation is made as to the accuracy of such numbers either as printed on
the Notes or as contained in any notice of redemption and reliance may be placed
only on the other identification numbers placed thereon.

                  20. Governing Law.  THE INTERNAL LAW OF THE STATE OF NEW YORK
SHALL GOVERN AND BE USED TO CONSTRUE THE INDENTURE, THE NOTES AND
THE GUARANTEES, IF ANY.

                  The Company will furnish to any Holder upon written request
and without charge a copy of the Indenture. Request may be made to:

                           Iron Mountain Incorporated
                           745 Atlantic Avenue
                           Boston, MA 602111
                           Telecopier No.:  (617) 350-7881
                           Attention: Chief Financial Officer


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                                       A-6


                                 ASSIGNMENT FORM


       To assign this Note, fill in the form below: (I) or (we) assign and
                              transfer this Note to

_______________________________________________________________________________
                  (Insert assignee's soc. sec. or tax I.D. no.)


_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________
              (Print or type assignee's name, address and zip code)

and irrevocably appoint _______________________________________________________
to transfer this Note on the books of the Company. The agent may substitute
another to act for him.

_______________________________________________________________________________

Date: ____________________________

                                    Your Signature: ___________________________
                                         (Sign exactly as your name appears 
                                               on the face of this Note)

Signature Guarantee.


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                                       A-7



                       OPTION OF HOLDER TO ELECT PURCHASE

           If you want to elect to have this Note purchased by the Company
pursuant to Section 4.10 or 4.14 of the Indenture, check the box below:

                    [ ] Section 4.10                [ ]  Section 4.14

           If you want to elect to have only part of the Note purchased by the
Company pursuant to Section 4.10 or Section 4.14 of the Indenture, state the
amount you elect to have purchased:
$____________


Date: __________________                Your Signature: _______________________
                                               (Sign exactly as your name 
                                                  appears on the Note)

                                        Tax Identification No.: _______________


Signature Guarantee.


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                                       A-8



                                   EXHIBIT B

FORM OF SUPPLEMENTAL INDENTURE TO BE DELIVERED BY FUTURE RESTRICTED SUBSIDIARIES

           SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated as of
________________, between __________________ (the "Restricted Subsidiary"), a
subsidiary of Iron Mountain Incorporated (or its successor), a Delaware
corporation (the "Company"), and ______________________________, a national
banking association, as trustee under the indenture referred to below (the
"Trustee").

                               W I T N E S S E T H

           WHEREAS, Iron Mountain Incorporated, a Delaware corporation has
heretofore executed and delivered to the Trustee an indenture (the "Indenture"),
dated as of ________, 1996, providing for the issuance of an aggregate principal
amount of $___,000,000 of __% Senior Subordinated Notes due 2006 (the "Notes");

           WHEREAS, Section 4.13 of the Indenture provides that under certain
circumstances the Company is required to cause the Restricted Subsidiary to
execute and deliver to the Trustee a supplemental indenture pursuant to which
the Restricted Subsidiary shall unconditionally guarantee all of the Company's
obligations under the Notes pursuant to a Subsidiary Guarantee on the terms and
conditions set forth herein; and

           WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is
authorized to execute and deliver this Supplemental Indenture.

           NOW THEREFORE, in consideration of the foregoing and for other good
and valuable consideration, the receipt of which is hereby acknowledged, the
Restricted Subsidiary and the Trustee mutually covenant and agree for the equal
and ratable benefit of the Holders of the Notes as follows:

      1. CAPITALIZED TERMS. Capitalized terms used herein without definition 
shall have the meanings assigned to them in the Indenture.

      2. AGREEMENT TO GUARANTEE. The Restricted Subsidiary hereby agrees that
its obligations to the Holder and the Trustee pursuant to this Subsidiary
Guarantee shall be as expressly set forth in Article 11 of the Indenture and in
such other provisions of the Indenture as are applicable to Restricted
Subsidiaries, and reference is made to the Indenture for the precise terms of
this Supplemental Indenture. The terms of Article 11 of the Indenture and such
other provisions of the Indenture as are applicable to Restricted Subsidiaries
are incorporated herein by reference.

      3.   EXECUTION AND DELIVERY OF SUBSIDIARY GUARANTEES.

           (a) To evidence its Subsidiary Guarantee set forth in this
      Supplemental Indenture, the Restricted Subsidiary hereby agrees that a
      notation of such Subsidiary Guarantee substantially


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                                       B-1



      in the form of Exhibit C to the Indenture shall be endorsed by an Officer
      of such Restricted Subsidiary on each Note authenticated and delivered by
      the Trustee after the date hereof.

           (b) Notwithstanding the foregoing, the Restricted Subsidiary hereby
      agrees that its Subsidiary Guarantee set forth herein shall remain in full
      force and effect notwithstanding any failure to endorse on each Note a
      notation of such Subsidiary Guarantee.

           (c) If an Officer whose signature is on this Supplemental Indenture
      or on the Subsidiary Guarantee no longer holds that office at the time the
      Trustee authenticates the Note on which a Subsidiary Guarantee is
      endorsed, the Subsidiary Guarantee shall be valid nevertheless.

           (d) The delivery of any Note by the Trustee, after the authentication
      thereof under the Indenture, shall constitute due delivery of the
      Subsidiary Guarantee set forth in this Supplemental Indenture on behalf of
      the Restricted Subsidiary.

      4. NO RECOURSE AGAINST OTHERS. No past, present or future director,
officer, employee, incorporator, stockholder of the Restricted Subsidiary, as
such, shall have any liability for any obligations of the Company or any
Restricted Subsidiary under the Notes, any Subsidiary Guarantee, the Indenture
or this Supplemental Indenture or for any claim based on, in respect of, or by
reason of, such obligations or their creation. Each Holder of the Notes by
accepting a Note waives and releases all such liability. The waiver and release
are part of the consideration for issuance of the Notes.

      5. NEW YORK LAW TO GOVERN. The internal law of the State of New York 
shall govern and be used to construe this Supplemental Indenture and the 
Subsidiary Guarantee.

      6. COUNTERPARTS The parties may sign any number of copies of this
Supplemental Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement.


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                                       B-2



      7. EFFECT OF HEADINGS. The Section headings herein are for convenience 
only and shall not affect the construction hereof.

           IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture to be duly executed and attested, all as of the date first above
written.


Dated:  ____________, ____               [Restricted Subsidiary]



                                          By:  ___________________________
                                               Name:
                                               Title:


Dated:  ____________, ____                     ____________________________,
                                               as Trustee



                                          By:  ___________________________
                                               Name:
                                               Title:


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                                       B-3



                                    EXHIBIT C
                  FORM OF NOTATION ON SENIOR SUBORDINATED NOTE
                        RELATING TO SUBSIDIARY GUARANTEE

           Each Guarantor set forth below and each Restricted Subsidiary of the
Company which in accordance with Section 4.13 of the Indenture is required to
guarantee the obligations of the Company under the Notes, upon execution of a
counterpart of the Indenture, jointly and severally unconditionally guarantees
(i) the due and punctual payment of the principal of and interest on the Notes,
whether at the maturity or interest payment or mandatory redemption date, by
acceleration, call for redemption or otherwise, and of interest on the overdue
principal of and interest, if any, on the Notes and all other obligations of the
Company to the Holders or the Trustee under the Indenture or the Notes and (ii)
in case of any extension of time of payment or renewal of any Notes or any of
such other obligations, that the same will be promptly paid in full when due or
performed in accordance with the terms of the extension or renewal, whether at
maturity, by acceleration or otherwise.

           The obligations of each Guarantor to the Holder and to the Trustee
pursuant to this Subsidiary Guarantee and the Indenture are as expressly set
forth in Article 11 of the Indenture and in such other provisions of the
Indenture as are applicable to Guarantors, and reference is hereby made to such
Indenture for the precise terms of this Subsidiary Guarantee. The terms of
Article 11 of the Indenture and such other provisions of the Indenture as are
applicable to Guarantors are incorporated herein by reference. This Subsidiary
Guaranty is subject to release as described in Sections 4.13 and 11.17 of the
Indenture, and the obligations of each Guarantor under this Subsidiary Guaranty
and the Indenture are limited as provided in Section 11.15 of the Indenture.

           This is a continuing guarantee and shall remain in full force and
effect and shall be binding upon each Guarantor and its successors and assigns
until full and final payment of all of the Company's obligations under the Notes
and the Indenture and shall inure to the benefit of the successors and assigns
of the Trustee and the Holders and, in the event of any transfer or assignment
of rights by any Holder or the Trustee, the rights and privileges herein
conferred upon that party shall automatically extend to and be vested in such
transferee or assignee, all subject to the terms and conditions hereof. This is
a guarantee of payment and not a guarantee of collection.

           This Subsidiary Guarantee shall not be valid or obligatory for any
purpose until the certificate of authentication on the Note upon which this
Subsidiary Guarantee is noted shall have been executed by the Trustee under the
Indenture by the manual signature of one of its authorized officers.

                                    [RESTRICTED SUBSIDIARY]


                                    By:________________________________________
                                    Name:
                                    Title:


NYMAIN01 Doc: 159158_2
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