IRON MOUNTAIN INC /DE
S-4, 1997-04-04
PUBLIC WAREHOUSING & STORAGE
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      As filed with the Securities and Exchange Commission on April 4, 1997
                                                         Registration No. 333-

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

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                              --------------------

                                    FORM S-4
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                              --------------------

                           IRON MOUNTAIN INCORPORATED
             (Exact name of registrant as specified in its charter)

DELAWARE                           4226                          04-3107342

(State or other        (Primary Standard Industrial       (I.R.S. Employer
jursidiction of         Classification Code Number)       Identification No.)
incorporation or
organization)



                      745 ATLANTIC AVENUE, BOSTON, MA 02111
                                 (617) 357-4455
   (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                              --------------------

                                C. Richard Reese
                            Chairman of The Board of
                      Directors and Chief Executive Officer
                           Iron Mountain Incorporated
                               745 Atlantic Avenue
                                Boston, MA 02111
                                 (617) 357-4455
 (Name, address, including zip code, and telephone number, including area code,
                              of agent for service)
                              --------------------
                                    Copy to:

                             William J. Curry, Esq.
                            Sullivan & Worcester LLP
                             One Post Office Square
                                Boston, MA 02109
                                 (617) 338-2800

         Approximate date of commencement of proposed sale to the public: Upon
consummation of the transactions described herein.

         If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. |_|



<PAGE>


                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
===================================================================================================
Title of Each Class of Securities to      Proposed Maximum           Amount of Registration Fee (1)
        be Registered               Aggregate Offering Price (1)
- ---------------------------------------------------------------------------------------------------
     <S>                                    <C>                                  <C>
          Common Stock,                     $(7,522,621)                         $0
     Par Value $.01 per share
===================================================================================================
</TABLE>

      (1)  The registration fee has been calculated in accordance with Rule
           457(f)(2) promulgated under the Securities Act of 1933. Because there
           is no market for the Common Stock, $.01 par value per share, of
           Safesite Records Management Corporation ("Safesite"), pursuant to
           Rule 457(f), the proposed maximum aggregate offering price equalss
           the difference between (a) $4,567,379 (the book value of Safesite's
           Common Stock as of December 31, 1996) and (b) $12,090,000 (the amount
           of cash to be paid by Registrant in the transaction). As this is a
           negative number, no fee is required to be paid. The registration fee
           is calculated on the basis of the proposed maximum aggregate offering
           price. Accordingly, pursuant to Rule 457(o) the number of shares
           being registered is not included in the table.


                             ----------------------
    The Registrant hereby amends this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrant will
file a further amendment which specifically states that the Registration
Statement will thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933, as amended, or until the Registration Statement will
become effective on such date as the Securities and Exchange Commission, acting
pursuant to Section 8(a), may determine.


<PAGE>


                     SAFESITE RECORDS MANAGEMENT CORPORATION


                                                                 April __, 1997


Dear Stockholder:

         You are cordially invited to attend a Special Meeting of Stockholders
(the "Safesite Stockholders Meeting") of Safesite Records Management Corporation
("Safesite") to be held on May 8, 1997 at 10:00 a.m., local time, at The
Strathallan, 550 East Avenue, Rochester, New York.

         At the Safesite Stockholders Meeting, stockholders will be asked to
approve and adopt an Agreement and Plan of Merger, as amended to date (the
"Merger Agreement"), providing for the merger (the "Merger") of a wholly owned
subsidiary of Iron Mountain Incorporated ("Iron Mountain") with and into
Safesite or, in the alternative, the merger of Safesite with and into such
subsidiary. At the effective time of the Merger (the "Effective Time"), all
outstanding shares of Safesite Common Stock, par value $.01 per share ("Safesite
Common Stock"), will be converted into the right to receive cash and shares of
Iron Mountain Common Stock, par value $.01 per share ("Iron Mountain Common
Stock"). Safesite stockholders have the right to dissent from the Merger and, if
the Merger is consummated, have the fair value of their shares paid to them in
cash by submitting a written notice prior to the Safesite Stockholders Meeting
and following the other procedures described in the accompanying Proxy
Statement.

         In the Merger, Iron Mountain will issue to Safesite stockholders shares
of Iron Mountain Common Stock and cash. Holders of options to acquire shares of
Safesite Common Stock that are exercisable as of the Effective Time
("Exercisable Options") will receive, as a result of the Merger, currently
exercisable options to acquire Iron Mountain Common Stock and, at Iron
Mountain's election, cash. Assuming (i) no adjustments are made in the amount of
consideration provided in the Merger Agreement, as described in the accompanying
Proxy Statement, (ii) a Determination Price (as defined in the accompanying
Proxy Statement) of $28.50 (the mid-point in the range between the floor price
of $26.00 and the ceiling price of $31.00) and (iii) Iron Mountain elects to pay
cash to holders of Exercisable Options, the aggregate value of shares issued in
the Merger and shares underlying exercisable options issued as a result of the
Merger would be $49,910,000, representing approximately 1,751,228 shares of Iron
Mountain Common Stock, and the aggregate amount of cash would be $12,090,000.
Based on the foregoing assumptions and on the shares of Safesite Common Stock
and Exercisable Options outstanding on March 27, 1997, each Safesite stockholder
would be entitled to receive approximately 0.1845 shares of Iron Mountain Common
Stock with a value of approximately $5.26 and approximately $1.27 in cash per
share of Safesite Common Stock based on the number of shares of Safesite Common
Stock and Exercisable Options outstanding on March 27, 1997. The Determination
Price calculated as of March 27, 1997 was $26.33.

         In order to protect the tax-free nature of the Merger, approximately
62% of the shares of Iron Mountain Common Stock received by each Safesite
stockholder may not be transferred by such stockholder for a period of one year
following the Effective Time. Neither Iron Mountain nor Safesite can predict the
price at which shares of Iron Mountain Common Stock will be trading at the end
of the one-year restriction period. The value of the shares of Iron Mountain
Common Stock issued to Safesite stockholders in the Merger would be adversely
affected if the trading price following the end of the one-year period was less
than the trading price at the Effective Time.

         In order to indemnify Iron Mountain for certain claims under the Merger
Agreement, $3,000,000 in cash will be withheld ratably from the cash merger
consideration payable to Safesite stockholders and holders of Exercisable
Options and held in escrow for a period of one year.

         The Merger is subject to, among other things, the approvals of various
governmental entities and other third parties, and will not be consummated until
those approvals have been obtained. As a result, it is expected that the Merger
will be completed during the second quarter of 1997.



<PAGE>


                                       -2-

         The Safesite Board of Directors has carefully considered the terms of
the proposed Merger Agreement and believes that the Merger and related
transactions are in the best interests of and fair to Safesite and its
stockholders. The Board has unanimously approved the Merger Agreement and the
related transactions and recommends that Safesite stockholders vote FOR this
proposal.

         The accompanying Proxy Statement sets forth the respective voting
rights of holders of shares of Safesite stock with respect to these matters. We
hope you will be able to attend the Safesite Stockholders Meeting. However, even
if you anticipate attending in person, we urge you to complete, sign, date and
return the enclosed proxy card promptly to ensure that your shares will be
represented at the Safesite Stockholders Meeting. If you do attend, you will, of
course, be entitled to vote in person.

         Thank you, and we look forward to seeing you at the meeting.

                            Sincerely,



                             B. Thomas Golisano,          James B. Wayman, Jr.,
                             Chairman of the Board        President


<PAGE>


                     SAFESITE RECORDS MANAGEMENT CORPORATION

                            NOTICE OF SPECIAL MEETING

                                 OF STOCKHOLDERS

                            To Be Held On May 8, 1997


TO THE STOCKHOLDERS OF SAFESITE RECORDS MANAGEMENT CORPORATION:

         NOTICE IS HEREBY GIVEN that a Special Meeting of Stockholders (the
"Safesite Stockholders Meeting") of Safesite Records Management Corporation
("Safesite") will be held on May 8, 1997 at 10:00 a.m., local time, at The
Strathallan, 550 East Avenue, Rochester, New York, for the purpose of
considering and voting upon the following proposals:

                  (1) A proposal to approve and adopt an Agreement and Plan of
         Merger, dated as of February 19, 1997, as amended to date (the "Merger
         Agreement"), among Iron Mountain Incorporated, a Delaware corporation
         ("Iron Mountain"), IM-1 Acquisition Corp., a Delaware corporation and
         wholly owned subsidiary of Iron Mountain ("Sub"), and Safesite pursuant
         to which Sub will be merged with and into Safesite, with Safesite
         continuing as the surviving corporation and a wholly owned subsidiary
         of Iron Mountain (the "Merger"), or, at Iron Mountain's option,
         Safesite will be merged with and into Sub, with Sub continuing as the
         surviving corporation.

                  (2) Such other business as may properly come before the
         Safesite Stockholders Meeting or any adjournments or postponements
         thereof.

         The Safesite Board of Directors has fixed the close of business on
March 31, 1997 as the record date for the determination of stockholders entitled
to notice of and to vote at the Safesite Stockholders Meeting and any
adjournments or postponements thereof. Only stockholders of record at the close
of business on such date are entitled to notice of and to vote at the Safesite
Stockholders Meeting. A list of Safesite stockholders entitled to vote at the
Safesite Stockholders Meeting or any adjournments or postponements thereof will
be available for examination for any purpose germane to the Safesite
Stockholders Meeting, during ordinary business hours, at the principal executive
offices of Safesite located at 96 High Street, North Billerica, Massachusetts
01862, for 10 days prior to the Safesite Stockholders Meeting.

         Shares of Common Stock, par value $.01 per share, are the only
securities of Safesite whose holders are entitled to vote upon the Merger
Agreement and any other proposals to be presented at the Safesite Stockholders
Meeting.

         Safesite stockholders entitled to vote at the Safesite Stockholders
Meeting have a right to dissent to the Merger and, if the Merger is consummated,
to obtain payment for their shares of Safesite stock by complying with the
provisions of Section 262 of the Delaware General Corporation Law ("Section
262"). A copy of Section 262 is attached as Annex V to the accompanying Proxy
Statement.

         Your vote is important regardless of the number of shares you own. Each
stockholder, even though he or she now plans to attend the Safesite Stockholders
Meeting, is requested to sign, date and return the enclosed proxy card without
delay in the enclosed postage-paid return envelope. You may revoke your proxy at
any time


<PAGE>


prior to its exercise. Any stockholder present at the Safesite Stockholders
Meeting or at any adjournments or postponements thereof may revoke his or her
proxy and vote personally on each matter brought before the Safesite
Stockholders Meeting.

                                        By Order of the Board of Directors,



                                        Mary Fay Kattman, Secretary

April ___, 1997

         THE BOARD OF DIRECTORS RECOMMENDS THAT YOU VOTE FOR THE PROPOSAL TO
APPROVE AND ADOPT THE MERGER AGREEMENT.

         PLEASE DATE AND SIGN THE ENCLOSED PROXY CARD AND MAIL IT PROMPTLY IN
THE ENCLOSED POSTAGE-PAID RETURN ENVELOPE.

                                       -2-

<PAGE>

Information contained herein is subject to completion or amendment. A
registration statement relating to these securities has been filed with the
Securities and Exchange Commission. These securities may not be sold nor may
offers to buy be accepted prior to the time the registration statement becomes
effective. This prospectus shall not constitute an offer to sell or the
solicitation of an offer to buy nor shall there be any sale of these securities
in any State in which such offer, solicitation or sale would be unlawful prior
to registration or qualification under the securities of any State.



                   SUBJECT TO COMPLETION - DATED APRIL 4, 1997

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

                     SAFESITE RECORDS MANAGEMENT CORPORATION

                                 PROXY STATEMENT

                       For Special Meeting of Stockholders
                             to Be Held May 8, 1997
                      ------------------------------------

                           IRON MOUNTAIN INCORPORATED

                                   PROSPECTUS
                      ------------------------------------

     This Proxy Statement and Prospectus (this "Proxy Statement") is being
furnished to the stockholders of Safesite Records Management Corporation, a
Delaware corporation ("Safesite"), in connection with the solicitation of
proxies by the Board of Directors of Safesite (the "Safesite Board") from
holders of outstanding shares of Common Stock, par value $.01 per share (the
"Safesite Common Stock"), of Safesite for use at the Special Meeting of
Stockholders of Safesite to be held at 10:00 a.m., local time, on May 8, 1997,
and at any adjournment or postponement thereof (the "Safesite Stockholders
Meeting"). This Proxy Statement and the accompanying form of proxy are first
being mailed to stockholders of Safesite on or about April __, 1997. For an
index indicating the pages on which certain terms used in this Proxy Statement
are defined, see "Definition Cross Reference Sheet" on page vii.

     Safesite stockholders will be asked at the Safesite Stockholders Meeting to
consider and vote upon a proposal to approve and adopt an Agreement and Plan of
Merger, dated as of February 19, 1997, as amended to date (the "Merger
Agreement"), among Iron Mountain Incorporated, a Delaware corporation ("Iron
Mountain," which term includes its consolidated subsidiaries unless the context
indicates otherwise), IM-1 Acquisition Corp., a Delaware corporation and wholly
owned subsidiary of Iron Mountain ("Sub"), and Safesite pursuant to which Sub
will be merged with and into Safesite, with Safesite continuing as the surviving
corporation and a wholly owned subsidiary of Iron Mountain (the "Merger"). At
Iron Mountain's option, the Merger may be structured as a merger of Safesite
with and into Sub, with Sub continuing as the surviving corporation.

        The Safesite Board has unanimously approved the Merger Agreement,
believes that the approval and adoption of the Merger Agreement is in the best
interests of Safesite and its stockholders and unanimously recommends that
Safesite's stockholders vote FOR the approval and adoption of the Merger
Agreement.

     See "Risk Factors" beginning on page 12 for information that should be
considered by stockholders of Safesite in evaluating an investment in Iron
Mountain Common Stock.

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

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
                 SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
                SECURITIES COMMISSION PASSED UPON THE ACCURACY OR
                        ADEQUACY OF THIS PROXY STATEMENT.
            ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

April __, 1997


<PAGE>



     This Proxy Statement also constitutes a Prospectus of Iron Mountain with
respect to the shares of Iron Mountain Common Stock, par value $.01 per share
(the "Iron Mountain Common Stock"), that will be issued to holders of Safesite
Common Stock at the effective time of the Merger (the "Effective Time"). In the
Merger, Iron Mountain will issue to Safesite stockholders shares of Iron
Mountain Common Stock and cash. Holders of options to acquire shares of Safesite
Common Stock that are exercisable as of the Effective Time ("Exercisable
Options") will receive as a result of the Merger, currently exercisable options
to acquire Iron Mountain Common Stock and, at Iron Mountain's election, cash.
Assuming (i) no adjustments are made in the amount of consideration provided in
the Merger Agreement, as described in the accompanying Proxy Statement, (ii) a
Determination Price (as defined below) of $28.50 (the mid-point in the range
between the floor price of $26.00 and the ceiling price of $31.00) and (iii)
Iron Mountain elects to pay cash to holders of Exercisable Options, the
aggregate value of shares issued in the Merger and shares underlying exercisable
options issued as a result of the Merger would be $49,910,000, representing
approximately 1,751,228 shares of Iron Mountain Common Stock, and the aggregate
amount of cash would be $12,090,000. Based upon the foregoing assumptions and on
the shares of Safesite Common Stock and Exercisable Options outstanding on March
27, 1997, each Safesite stockholder would be entitled to receive approximately
0.1845 shares of Iron Mountain Common Stock with a value of approximately $5.26
and approximately $1.27 in cash per share of Safesite Common Stock based on the
number of shares of Safesite Common Stock and Exercisable Options outstanding on
March 27, 1997. The "Determination Price" will be equal to the average closing
price per share of Iron Mountain Common Stock for the period of 20 trading days
ending three trading days prior to the closing date of the Merger (the "Closing
Date"); provided, however, that if the average closing price per share for such
period is less than $26.00, the Determination Price shall be $26.00 and if the
average closing price per share for such period is greater than $31.00, the
Determination Price shall be $31.00. The Determination Price calculated using
the above-described formula for the 20 trading day period ending on March 27,
1997 was $26.33. However, such Determination Price may increase or decrease
between March 27, 1997 and the Closing Date. See "The Merger
Agreement--Conversion of Safesite Common Stock."

     Safesite has agreed, and by approving the Merger Agreement, Safesite's
stockholders will agree, that $3,000,000 in cash will be withheld ratably from
the cash merger consideration payable to Safesite stockholders (other than
holders of Dissenting Shares, as defined below) and holders of Exercisable
Options and held in escrow to indemnify Iron Mountain and hold Iron Mountain
harmless for a period of one year following the Closing Date from and against
all damages, claims, losses, expenses, costs, obligations and liabilities
suffered by Iron Mountain by reason of any breach of Safesite's representations
and warranties contained in the Merger Agreement or failure of Safesite to
perform or fulfill any of its covenants or agreements set forth in the Merger
Agreement and for certain other claims and expenses. See "Ancillary
Agreements--Escrow Agreement."

     In order to protect the tax-free nature of the Merger, approximately 62% of
the shares of Iron Mountain Common Stock received by each Safesite stockholder
may not be transferred by such stockholder for a period of one year following
the Effective Time. See "The Merger Agreement--Conversion of Safesite Common
Stock--Restrictions on Transfer of Iron Mountain Common Stock."

     Holders of Safesite Common Stock have the right to dissent from the Merger
and, if the Merger is consummated, have the fair value of their shares paid to
them in cash in lieu of receiving the Merger consideration by submitting a
written notice to Safesite prior to the Safesite Stockholders Meeting and
following the other procedures described under "Rights of Dissenting
Stockholders." The exercise of appraisal rights by certain holders will have no
effect on the per share merger consideration to be received by other holders of
Safesite Common Stock. Any shares of Safesite Common Stock held by holders
exercising such rights are referred to herein as "Dissenting Shares."

     No person is authorized in connection with the offering and solicitation
made hereby to give any information or to make any representation not contained
in this Proxy Statement, and, if given or made, such information or
representation should not be relied upon as having been authorized. This Proxy
Statement does not constitute an offer to sell, or a solicitation of an offer to
purchase, the securities offered by this Proxy Statement, or the solicitation of
a proxy, in any jurisdiction or from any person to whom it is unlawful

                                       ii

<PAGE>



to make such offer or solicitation. Neither the delivery of this Proxy Statement
nor any distribution of the securities offered pursuant to this Proxy Statement
shall, under any circumstances, create any implication that there has been no
change in the information contained herein or in the affairs of Iron Mountain or
Safesite since the date hereof.

     The information set forth herein concerning Iron Mountain has been
furnished by Iron Mountain. The information set forth herein concerning Safesite
has been furnished by Safesite. The pro forma information contained herein
relating to Iron Mountain has been prepared by Iron Mountain and includes
historical financial information regarding Safesite that was furnished to Iron
Mountain by Safesite. Iron Mountain does not have independent knowledge of the
matters set forth herein concerning Safesite. Safesite does not have independent
knowledge of the matters set forth herein concerning Iron Mountain.

                                       iii

<PAGE>



                                                 TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                         Page
<S>                                                                                                      <C>

AVAILABLE INFORMATION....................................................................................1

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE .........................................................1

SUMMARY .................................................................................................2
     The Companies ......................................................................................2
     The Safesite Stockholders Meeting...................................................................2
     The Merger..........................................................................................3
     Restrictions on Transfer of Iron Mountain Common Stock..............................................4
     Indemnification.....................................................................................4
     Certain Federal Income Tax Consequences.............................................................5
     Accounting Treatment................................................................................5
     Securities Ownership of Management; Stockholders' Agreement.........................................5
     Recommendation of the Safesite Board................................................................6
     Conditions to the Merger............................................................................6
     Stock Exchange Listing .............................................................................6
     Termination and Certain Fees........................................................................6
     Corporate Governance................................................................................6
     Interests of Certain Persons........................................................................7
     Rights of Dissenting Stockholders...................................................................7
     Comparative Per Share Market Price Information......................................................7
     Iron Mountain Summary and Pro Forma Information.....................................................8
     Safesite Summary Financial Information.............................................................10
     Comparative Per Share Data.........................................................................11

RISK FACTORS............................................................................................12
     Risk Factors Related to the Iron Mountain Common Stock.............................................12
     Risk Factors Related to the Merger.................................................................15

THE SAFESITE STOCKHOLDERS MEETING.......................................................................17
     Record Date; Quorum; Required Vote.................................................................17
     Solicitation and Voting of Proxies.................................................................17
     Ownership of Safesite Common Stock.................................................................19

BACKGROUND OF THE MERGER............................................................................... 20
     General Background of the Merger...................................................................20
     Recommendation of the Safesite Board; Safesite's Reasons for the Merger............................21
     Iron Mountain's Reasons for the Merger ............................................................23
     Financial Advisor to Iron Mountain.................................................................23

THE MERGER AGREEMENT....................................................................................23
     The Merger.........................................................................................23
     Conversion of Safesite Common Stock................................................................24
     Treatment of Options...............................................................................25
     Indemnification....................................................................................26
     Exchange Procedures................................................................................26
     Representations and Warranties.....................................................................27
     Certain Covenants..................................................................................27

                                                    iv

<PAGE>



     Conditions to the Merger...........................................................................30
     Termination........................................................................................31
     Fees and Expenses..................................................................................32
     Amendment; Waiver..................................................................................33

ANCILLARY AGREEMENTS....................................................................................33
     Stockholders' Agreement............................................................................33
     Escrow Agreement...................................................................................35
     Registration Rights Agreement; Restrictions on Transfer under the Federal Securities Laws..........36
     Real Property Purchase Agreements..................................................................36

CERTAIN FEDERAL INCOME TAX CONSIDERATIONS...............................................................37

DESCRIPTION OF IRON MOUNTAIN............................................................................39
     Introduction.......................................................................................39
     The Records Management Industry....................................................................39
     Financial Characteristics of Iron Mountain's Business..............................................40
     Recent and Pending Acquisitions....................................................................41
     Growth Strategy....................................................................................42
     Premium Service Strategy...........................................................................44
     Low-Cost Operating Strategy........................................................................45
     Technology and Development; Information Systems....................................................46
     Description of Iron Mountain Records Management Services...........................................47
     Potential International Investments................................................................49
     Customers..........................................................................................49
     Marketing and Sales................................................................................50
     Properties.........................................................................................50
     Employees..........................................................................................51
     Competition........................................................................................51
     Insurance..........................................................................................52
     Environmental Matters..............................................................................52
     Legal Proceedings..................................................................................53
     Iron Mountain's Selected Financial and Operating Information.......................................54
     Management's Discussion and Analysis of Financial Condition and Results of Operations..............56

MANAGEMENT OF IRON MOUNTAIN.............................................................................64
     Directors, Executive Officers and Certain Other Officers...........................................64
     Executive Compensation.............................................................................67
     Compensation Committee Interlocks and Insider Participation........................................67
     Director Compensation..............................................................................68
     Stock Option Information...........................................................................69
     Certain Transactions...............................................................................70

PRINCIPAL STOCKHOLDERS OF IRON MOUNTAIN.................................................................71

PRO FORMA CONDENSED CONSOLIDATED FINANCIAL INFORMATION..................................................73

MARKET PRICES AND DIVIDEND DATA.........................................................................83

DESCRIPTION OF IRON MOUNTAIN CAPITAL STOCK..............................................................84
     Common Stock.......................................................................................84
     Preferred Stock....................................................................................85

                                                    v

<PAGE>



     DGCL and Certain Provisions of the Iron Mountain Restated Certificate and the
       Iron Mountain By-Laws............................................................................85
     Transfer Agent and Registrar.......................................................................87

DESCRIPTION OF SAFESITE.................................................................................88
     History............................................................................................88
     The Safesite Approach to the Records Storage Market; Safesite Customers............................88
     Storage Revenues...................................................................................88
     Safesite Services..................................................................................89
     Inventory Control/Security.........................................................................90
     Employees..........................................................................................90
     Competition........................................................................................91
     Properties.........................................................................................91
     Insurance..........................................................................................92
     Environmental Matters..............................................................................92
     Certain Transactions...............................................................................93
     Legal Proceedings..................................................................................93
     Safesite's Selected Financial and Operating Information............................................94
     Management's Discussion and Analysis of Financial Condition and Results of Operations..............95

COMPARISON OF RIGHTS OF STOCKHOLDERS OF IRON MOUNTAIN AND SAFESITE......................................99
     Charter Amendments.................................................................................99
     By-Law Amendments..................................................................................99
     Voting Rights.....................................................................................100
     Conversion Rights.................................................................................100
     Preemptive Rights.................................................................................100
     Special Meetings..................................................................................100
     Corporate Action Without a Meeting................................................................100
     Dividends.........................................................................................101
     Liquidation.......................................................................................101
     Provisions Relating to Directors and Officers.....................................................101
     Stockholder Nominations to Elect Directors........................................................102
     Removal...........................................................................................102

RIGHTS OF DISSENTING STOCKHOLDERS......................................................................102

LEGAL MATTERS..........................................................................................105

EXPERTS................................................................................................105

INDEX TO FINANCIAL STATEMENTS..........................................................................F-1
</TABLE>

ANNEXES:
     Annex I -- Agreement and Plan of Merger 
     Annex II -- Article XII of Iron Mountain By-Laws 
     Annex III -- Stockholders' Agreement 
     Annex IV -- Form of Escrow Agreement 
     Annex V -- Section 262 of the Delaware General Corporation Law


                                                    vi

<PAGE>



                        DEFINITION CROSS REFERENCE SHEET

     Set forth below is a list of certain defined terms used in this Proxy
Statement and the page on which each such term is defined:
<TABLE>
<CAPTION>


Defined Term                                          Page   Defined Term                                 Page
- ------------                                          ----   ------------                                 ----
<S>                                                    <C>   <C>                                            <C>
ACMs....................................................15   Lock-up Value..................................25
Agent...................................................35   Merger .........................................i
Agreeing Stockholders...................................33   Merger Agreement................................i
Carton.................................................. 2   Named Executive Officers.......................67
Cash Amount.............................................24   Nasdaq National Market..........................6
Cash Conversion Number.................................. 3   1997 Acquisitions..............................73
Certificate of Merger................................... 3   1996 Acquisitions..............................73
Change of Control.......................................14   Nonvoting Common Stock.........................84
Chrysler Notes..........................................57   Note Indenture.................................14
Closing Date............................................ii   Note Offering...................................9
Closing Price...........................................25   Options........................................69
Code.................................................... 5   Other Rights...................................69
Commission...............................................1   Other Transaction..............................28
Common Stock Amount.....................................24   Preferred Stock................................14
Company Benefit Plans...................................68   Proxy Statement.................................i
Credit Agreement........................................12   Purchase Agreement.............................36
Delaware Court.........................................102   Recent Acquisitions............................41
Determination Price.....................................24   Record Date.....................................2
DGCL.....................................................7   Registration Rights Agreement..................28
Director's Compensation.................................68   Registration Statement..........................1
Directors Plan..........................................68   RTC............................................49
Dissenting Shares.......................................ii   Safesite........................................i
EBITDA...................................................9   Safesite Board..................................i
Effective Time..........................................ii   Safesite By-Laws...............................99
Eligible Director.......................................68   Safesite Certificates..........................26
Environmental Laws......................................14   Safesite Certificate of Incorporation..........99
Escrow Agent.............................................5   Safesite Common Stock...........................i
Escrow Agreement.........................................5   Safesite Option Plans...........................7
Escrow Indemnity Funds..................................35   Safesite Principal Stockholders.................3
Escrow Indemnity Period.................................35   Safesite Stockholders Meeting...................i
Exchange Act.............................................1   Schooner.......................................14
Exchange Agent..........................................26   Section 262.....................................7
Exchange Merger Consideration...........................26   Securities Act..................................1
Excluded Acquisitions...................................78   Senior Subordinated Notes......................14
Exercisable Options.....................................ii   Service........................................37
Expenses................................................32   Share Price.....................................4
FDIC....................................................49   Stock Conversion Number.........................3
Fully Diluted Shares.....................................3   Stockholders' Agreement.........................3
Golisano.................................................3   Sub.............................................i
HSR Act.................................................28   Subject Shares.................................25
IMRM....................................................36   Surviving Corporation...........................3
Initial Public Offering.................................56   Termination Date...............................32
Iron Mountain............................................i   Transfer Restrictions...........................4
Iron Mountain Board.....................................14   Transfer.......................................25
Iron Mountain By-Laws....................................4   USTs...........................................15
Iron Mountain Common Stock..............................ii   Voting Power...................................84
Iron Mountain Principal Stockholders....................14   Warrant........................................57
Iron Mountain Restated Certificate......................14   Wayman..........................................3
Iron Mountain Stock Option Plan..........................4   William Blair...................................7
ISO.....................................................69
</TABLE>



                                                          vii

<PAGE>



                              AVAILABLE INFORMATION

     Iron Mountain is subject to the informational requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, in
accordance therewith, files reports, proxy statements, and other information
with the Securities and Exchange Commission (the "Commission"). Such reports,
proxy statements, and other information concerning Iron Mountain can be
inspected and copied at the public reference facilities maintained by the
Commission at 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549, and at
the Commission's Regional Offices at Seven World Trade Center, 13th Floor, New
York, New York 10048, and Citicorp Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661. Copies of such materials can be obtained from the
Public Reference Section of the Commission at 450 Fifth Street, N.W., Room 1024,
Washington, D.C. 20549, at prescribed rates. The Commission maintains a site on
the Internet's World Wide Web at http://www.sec.gov that contains reports, proxy
and information statements and other information regarding registrants that file
electronically with the Commission, including Iron Mountain on and after August
14, 1996. In addition, reports, proxy statements and other information
concerning Iron Mountain may also be inspected at the offices of Nasdaq
Operations, 1735 K Street, N.W., Washington, D.C. 20006.

     Iron Mountain has filed with the Commission a registration statement on
Form S-4 (herein, together with all amendments and exhibits, referred to as the
"Registration Statement") under the Securities Act of 1933, as amended (the
"Securities Act"), covering the shares of Iron Mountain Common Stock issuable in
connection with the Merger. This Proxy Statement, which also constitutes the
Prospectus of Iron Mountain filed as part of the Registration Statement, does
not contain all of the information set forth in the Registration Statement and
the exhibits thereto, certain parts of which are omitted in accordance with the
rules and regulations of the Commission. For further information, reference is
hereby made to the Registration Statement, which is available for inspection and
copying as set forth above. Statements contained in this Proxy Statement as to
the contents of any contract or other document referred to herein or therein are
not necessarily complete, and in each instance reference is made to the copy of
such contract or other document filed as an exhibit to the Registration
Statement or such other document, each such statement being qualified in all
respects by such reference.


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     No information relating to Iron Mountain or Safesite is incorporated herein
by reference.


<PAGE>


                                     SUMMARY


     The following is a summary of certain information contained in this Proxy
Statement. This summary is not intended to be complete and is qualified in its
entirety by reference to the more detailed information set forth elsewhere in
this Proxy Statement and its Annexes, all of which should be reviewed carefully.

The Companies

     Iron Mountain. Iron Mountain is America's largest records management
company, as measured by its revenues in the United States. Iron Mountain is a
full-service provider of records management and related services, enabling
customers to outsource data and records management functions. As of December 31,
1996, Iron Mountain managed approximately 30.6 million Cartons(1) in 109 records
centers in 33 markets nationwide. Iron Mountain has a diversified base of over
23,000 customer accounts, which includes more than half of the Fortune 500 and
numerous legal, banking, healthcare, accounting, insurance, entertainment and
government organizations. Iron Mountain provides storage and related services
for all major media, including paper (which is the dominant form of records
retention and which has accounted for approximately 85% of Iron Mountain's
revenues since 1992), computer disks and tapes, microfilm and microfiche, master
audio and video tapes, film and optical disks, X-rays and blueprints. Iron
Mountain's principal services include filing, retrieval and destruction of
records, courier pick-up and delivery, database management and customized
reporting. Iron Mountain also sells storage materials and provides consulting
and other records-related services.

     The principal executive offices of Iron Mountain are located at 745
Atlantic Avenue, Boston, Massachusetts 02111. Its telephone number is (617)
357-4455.

     Safesite. Safesite currently conducts its records management business in 14
cities. Each branch is self-contained, with its own sales staff, data processing
and storage facilities. A branch manager directs operations. Ten of these
markets overlap with Iron Mountain operations, while four represent markets in
which Iron Mountain does not currently have facilities. Safesite has a
diversified base of over 7,000 customer accounts. Safesite's principal services
include hard copy storage, medical records storage, inter-filing of medical
records, computer media storage, pickup, delivery and destruction services and
customized reporting. Safesite was incorporated under the laws of the State of
Delaware in 1989.

     Safesite's principal offices are located at 96 High Street, North
Billerica, Massachusetts, and its telephone number is (508) 663-7100.


The Safesite Stockholders Meeting

     The Safesite Stockholders Meeting will be held at The Strathallan, 550 East
Avenue, Rochester, New York on May 8, 1997, beginning at 10:00 a.m. local time.
The purpose of the Safesite Stockholders Meeting is to consider and vote upon
the Merger Agreement. See "The Safesite Stockholders Meeting."

     The record date for the Safesite Stockholders Meeting is March 31, 1997
(the "Record Date"). Accordingly, holders of record of Safesite Common Stock as
of the Record Date will be entitled to notice of, and to vote at, the

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

(1) The term "Carton" is defined as a measurement of volume equal to a single
standard storage carton, approximately 1.2 cubic feet. The number of Cartons
stored does not include storage volumes in Iron Mountain's vital records
services and data protection services, which are described under "Description of
Iron Mountain--Description of Iron Mountain Records Management Services."

                                        2

<PAGE>



Safesite Stockholders Meeting. The presence in person or by proxy of a majority
of shares entitled to vote as of the Record Date is required to constitute a
quorum for the transaction of business at the Safesite Stockholders Meeting. The
Merger Agreement must be approved and adopted by holders of a majority of the
outstanding shares of Safesite Common Stock entitled to vote at the Safesite
Stockholders Meeting. Pursuant to the terms of a certain Stockholders'
Agreement, dated as of February 19, 1997 (the "Stockholders' Agreement"), by and
among Iron Mountain and certain stockholders of Safesite, B. Thomas Golisano
("Golisano") and James B. Wayman, Jr. ("Wayman," and together with Golisano, the
"Safesite Principal Stockholders") have agreed to vote their shares of Safesite
Common Stock in favor of the Merger. See "Ancillary Agreements--Stockholders'
Agreement."


The Merger

     General. At the Effective Time, Sub will be merged with and into Safesite,
with Safesite continuing as the surviving corporation and a wholly owned
subsidiary of Iron Mountain. As a result of the Merger, the separate corporate
existence of Sub will cease. Pursuant to the terms of the Merger Agreement, at
the option of Iron Mountain, the Merger may be structured as a merger of
Safesite with and into Sub, with Sub continuing as the surviving corporation (in
either structure, the corporation surviving the Merger is hereinafter referred
to as the "Surviving Corporation"). Subject to the terms and conditions of the
Merger Agreement, the closing of the transactions contemplated thereby will take
place on the fifth business day after the date on which the last of the
conditions set forth in the Merger Agreement is fulfilled or waived, other than
conditions requiring deliveries at the closing, unless another date is agreed to
by Iron Mountain and Safesite. The Merger will become effective at the Effective
Time, which will be the time at which a certificate of merger (the "Certificate
of Merger") is filed with the Secretary of State of the State of Delaware or
such time thereafter as is provided in the Certificate of Merger.

     Conversion of Common Stock. Upon consummation of the Merger, each share of
Safesite Common Stock issued and outstanding immediately prior to the Effective
Time will be converted into the right to receive, subject to certain
indemnification provisions in the Merger Agreement, shares of Iron Mountain
Common Stock equal to the "Stock Conversion Number" plus cash in an amount equal
to the "Cash Conversion Number." The "Stock Conversion Number" is the quotient
of (i) the "Common Stock Amount" divided by (ii) the number of "Fully Diluted
Shares." The number of "Fully Diluted Shares" equals the sum of (a) the number
of shares of Safesite Common Stock issued and outstanding immediately prior to
the Effective Time and (b) the number of shares of Safesite Common Stock that
may be issued pursuant to Exercisable Options. The "Common Stock Amount" equals
the quotient of (x) $49,910,000 divided by (y) the Determination Price. The
"Cash Conversion Number" is the quotient of (i) the "Cash Amount" divided by
(ii) the number of Fully Diluted Shares. The "Cash Amount" is the difference
between (x) $12,090,000 and (y) an amount equal to the amount by which Safesite
indebtedness for borrowed money exceeds $500,000. As of March 27, 1997, the
aggregate amount of such indebtedness equaled approximately $730,000.

     Assuming that there is no adjustment to the Cash Amount, that the
Determination Price equals $28.50 (the mid-point in the range between the floor
price of $26.00 and the ceiling price of $31.00), and the number of Fully
Diluted Shares equals 9,489,297 (the number as of March 27, 1997), each share of
Safesite Common Stock (other than Dissenting Shares) would be converted at the
Effective Time into the right to receive approximately 0.1845 shares of Iron
Mountain Common Stock and $1.27 in cash, having an aggregate value, based on the
Determination Price, of approximately $6.53. The Determination Price calculated
for the 20 trading days ending March 27, 1997 was $26.33. On the Closing Date,
$3,000,000 will be withheld ratably from the cash consideration payable to
Safesite stockholders and holders of Exercisable Options and held in escrow to
indemnify and hold harmless Iron Mountain from certain claims under the Merger
Agreement. Anyone holding Dissenting Shares will not contribute to the escrow
amount or be subject to the indemnification obligations. See "The Merger
Agreement--Indemnification."

     For a description of the Iron Mountain Common Stock, see "Description of
Iron Mountain Capital Stock" and "Comparison of Rights of Stockholders of Iron
Mountain and Safesite."

                                        3

<PAGE>



     Treatment of Options. As soon as reasonably practicable after the Effective
Time, each holder of an Exercisable Option will receive (1) a non-qualified
option to acquire shares of Iron Mountain Common Stock under Iron Mountain's
1995 Stock Incentive Plan (the "Iron Mountain Stock Option Plan"), which option
for Iron Mountain Common Stock shall (A) have an exercise price per share
determined by dividing the exercise price per share of the applicable
Exercisable Option by the Stock Conversion Number and (B) entitle the holder to
purchase that number of shares equal to the product of (x) the number of shares
subject to such option that as of the Effective Time is exercisable and (y) the
Stock Conversion Number, and (2) cash in the amount of the product of (x) the
number of shares subject to such option that as of the Effective Time is
exercisable and (y) the Cash Conversion Number. Pursuant to the terms of the
Merger Agreement, in lieu of issuing cash in respect of Exercisable Options,
Iron Mountain has reserved the right, in its sole discretion, subject to
notification to Safesite not less than ten (10) days prior to the Closing Date,
to exchange each Exercisable Option solely for an option to acquire Iron
Mountain Common Stock.

     With respect to any such option or portion thereof that is not exercisable
at the Effective Time and with respect to certain other options to acquire
17,500 shares of Safesite Common Stock recently granted to five individuals,
each holder will receive a non-qualified option to acquire shares of Iron
Mountain Common Stock under the Iron Mountain Stock Option Plan at an exercise
price and in an amount affording the holder equivalent value for the option
being exchanged, which option for Iron Mountain Common Stock will (A) have an
exercise price per share determined by dividing (x) the exercise price per share
of the applicable option by (y) the quotient of the Share Price (as defined
below) divided by the Determination Price, and (B) entitle the holder to
purchase that number of shares equal to the product of (x) the number of shares
subject to such option which as of the Effective Time is not exercisable and (y)
the quotient of the Share Price divided by the Determination Price. The "Share
Price" is the quotient of (x) the sum of $49,910,000 and the Cash Amount divided
by (y) the number of Fully Diluted Shares. In addition, any such option to
acquire Iron Mountain Common Stock will be exercisable (subject to the terms of
such option and the Iron Mountain Stock Option Plan) on the date the applicable
option would have been exercisable and otherwise be subject to the terms and
conditions of the Iron Mountain Stock Option Plan.


Restrictions on Transfer of Iron Mountain Common Stock

     In order to protect the tax-free nature of the Merger, for a period of one
year following the Effective Time, approximately 62% of the Iron Mountain Common
Stock received by each Safesite stockholder in connection with the Merger will
be subject to restrictions on transfer (the "Transfer Restrictions") set forth
in the Amended and Restated By-Laws of Iron Mountain (the "Iron Mountain
By-Laws"), which will prohibit transfers, sales, assignments or other
dispositions of such Iron Mountain Common Stock by each former Safesite
stockholder. For a full description of the Transfer Restrictions and the formula
which will be used to determine the percentage of shares which will be subject
to the Transfer Restrictions, see "The Merger Agreement--Conversion of Safesite
Common Stock--Restrictions on Transfer of Iron Mountain Common Stock."


Indemnification

     Safesite has agreed, and by approving the Merger Agreement, Safesite's
stockholders will agree, that $3,000,000 in cash will be withheld ratably from
the cash merger consideration payable to Safesite stockholders (other than
holders of Dissenting Shares) and holders of Exercisable Options and held in
escrow to indemnify Iron Mountain and hold Iron Mountain harmless for a period
of one year following the Closing Date from and against all damages, claims,
losses, expenses, costs, obligations and liabilities suffered by Iron Mountain
by reason of any breach of Safesite's representations and warranties contained
in the Merger Agreement or failure of Safesite to perform or fulfill any of its
covenants or agreements set forth in the Merger Agreement, any legal action or
other claim by a third party relating to Safesite to the extent such action or
claim results in a breach of a representation or warranty, or the indebtedness
for borrowed money of Safesite as of the Effective Time exceeding $500,000.
Accordingly, on the Closing Date, $3,000,000 will be withheld on a ratable basis
from the cash portion of the

                                        4

<PAGE>



Merger consideration otherwise payable to Safesite's stockholders (and holders
of Exercisable Options) and held in escrow pursuant to the terms of the escrow
agreement (the "Escrow Agreement") to be executed by Iron Mountain, Safesite,
Golisano, as agent for Safesite's stockholders, and State Street Bank and Trust
Company, as escrow agent (the "Escrow Agent"). In addition, Safesite has agreed
and Safesite's stockholders, by approving the Merger Agreement, will agree, to
appoint Golisano, or such other person or persons to whom Golisano delegates
such authority, as their agent and attorney-in-fact, with full power of
substitution, to take all actions on their behalf in connection with the
indemnification provisions of the Merger Agreement and the Escrow Agreement.
Iron Mountain may only recover on a claim if all loss and expense for all claims
exceeds, in the aggregate, $150,000, and in no event will the aggregate amount
required to be paid to Iron Mountain exceed $3,000,000. See "Ancillary
Agreements--Escrow Agreement" for a description of the terms and conditions of
the Escrow Agreement.


Certain Federal Income Tax Consequences

     The Merger is intended to qualify as a reorganization within the meaning of
Section 368(a) of the Internal Revenue Code of 1986, as amended (the "Code").
The obligation of each of Iron Mountain and Safesite to consummate the Merger is
subject to the condition that it shall have received an opinion of its counsel,
dated the Closing Date, to the effect that the Merger will be treated as such a
reorganization. Assuming the Merger is so treated, for federal income tax
purposes, the Merger will not result in the recognition of gain or loss to Iron
Mountain, Safesite, Sub or the holders of Safesite Common Stock except with
respect to cash received in the Merger (including in lieu of fractional shares)
or pursuant to the exercise of appraisal rights. The tax basis of Iron Mountain
Common Stock received will generally be the same as the tax basis of the
Safesite Common Stock surrendered in the Merger, and the holding period of the
Iron Mountain Common Stock received will include the holding period of the
Safesite Common Stock surrendered if the Safesite Common Stock was held as a
capital asset. See "Certain Federal Income Tax Considerations."


Accounting Treatment

     The Merger will be accounted for by Iron Mountain under the "purchase"
method of accounting in accordance with generally accepted accounting
principles. Therefore, the aggregate consideration paid by Iron Mountain in
connection with the Merger will be allocated to Safesite's assets and
liabilities based upon their fair values, with any excess being treated as
goodwill. The assets and liabilities and results of operations of Safesite will
be consolidated into the assets and liabilities and results of operations of
Iron Mountain subsequent to the Effective Time.


Securities Ownership of Management; Stockholders' Agreement

     Safesite. As of March 28, 1997, Directors and executive officers of
Safesite and their respective affiliates were the record owners of 6,354,177
shares of the outstanding Safesite Common Stock, which constitute in the
aggregate approximately 69.7% of the voting power of Safesite stockholders. It
is anticipated that each of such Directors, executive officers and their
respective affiliates will vote their shares in favor of the Merger Agreement.
See "The Safesite Stockholders Meeting--Ownership of Safesite Securities" and
"Ancillary Agreements--Stockholders' Agreement."

     In connection with the execution of the Merger Agreement, Iron Mountain and
certain stockholders of Safesite entered into the Stockholders' Agreement,
pursuant to which the Safesite Principal Stockholders agreed, among other
things, to vote all of the shares of Safesite Common Stock controlled by them,
which equals approximately 66.1% of the voting power of outstanding Safesite
Common Stock (and granted to Iron Mountain their proxies to vote all such
shares) (i) in favor of the adoption of the Merger Agreement, (ii) against any
action or agreement that would result in a breach in any material respect of any
covenant, representation or warranty or any other obligation of

                                        5

<PAGE>



Safesite under the Merger Agreement, and (iii) against any proposal for any
merger, consolidation, recapitalization, sale of assets, business combination,
or other material change in Safesite's corporate structure or business that is
inconsistent with or that would, or is reasonably likely to, directly or
indirectly, impede, interfere with or attempt to discourage the Merger or any
other transaction contemplated by the Merger Agreement. See "Ancillary
Agreements--Stockholders' Agreement."

     Iron Mountain. The Directors and executive officers of Iron Mountain are
beneficial owners in the aggregate of approximately 43.4% of the outstanding
shares of Iron Mountain Common Stock.


Recommendation of the Safesite Board

     The Safesite Board, by unanimous vote, has determined that the Merger is in
the best interests of the stockholders of Safesite and recommends that holders
of Safesite Common Stock vote in favor of the Merger Agreement. The decision of
the Safesite Board to enter into the Merger Agreement and to recommend that the
stockholders vote in favor of the Merger is based upon its evaluation of a
number of factors. See "Background of the Merger--Recommendation of the Safesite
Board; Safesite's Reasons for the Merger."


Conditions to the Merger

     The obligations of Iron Mountain, Sub and Safesite to consummate the Merger
are subject to various conditions, including, among others, the adoption of the
Merger Agreement by the Safesite stockholders, the receipt of certain required
regulatory and third party approvals and the receipt of opinions from tax
counsel for Iron Mountain and Safesite. See "The Merger Agreement--Conditions to
the Merger."


Stock Exchange Listing

     Application will be made to list the shares of Iron Mountain Common Stock
to be issued in connection with the Merger on The Nasdaq Stock Market's National
Market (the "Nasdaq National Market"). Iron Mountain Common Stock is currently
traded on the Nasdaq National Market under the symbol "IMTN."


Termination and Certain Fees

     The Merger Agreement will be subject to termination by the mutual consent
of Iron Mountain and Safesite. The Merger Agreement will also be subject to
termination by either Iron Mountain or Safesite under certain circumstances
described herein. If the Merger Agreement is terminated by Iron Mountain or
Safesite under certain circumstances described herein, Safesite or Iron
Mountain, as the case may be, will be obligated to pay to the other an amount
equal to $5 million. In addition, if the Merger Agreement is terminated by Iron
Mountain under certain circumstances described herein, Iron Mountain will have
the right, within six months thereafter, to commence an offer to purchase all of
the outstanding Safesite Common Stock at a per share price equal to the
consideration that would otherwise be paid pursuant to the Merger Agreement. The
Safesite Principal Stockholders have agreed pursuant to the Stockholders'
Agreement to tender all of their respective shares to Iron Mountain in response
to such an offer. See "Ancillary Agreements--Stockholders' Agreement."


Corporate Governance

     Once the Merger is effected, the Directors of Sub immediately prior to the
Effective Time will be elected the Directors of the Surviving Corporation, and
the officers of Sub immediately prior to the Effective Time will be

                                        6

<PAGE>



appointed the officers of the Surviving Corporation. The Directors and Executive
Officers of Iron Mountain will not change as a result of the Merger, except that
Golisano will be appointed as a Class A Director of Iron Mountain following the
Closing Date. See "Management of Iron Mountain."


Interests of Certain Persons

     In considering the recommendation of the Safesite Board with respect to the
Merger, stockholders of Safesite should be aware that certain members of
Safesite's management and the Safesite Board have certain interests in the
Merger that may present them with actual or potential conflicts of interest. On
May 24, 1996, Safesite amended the Safesite 1990 Long-Term Incentive Plan and
1990 Nonstatutory Stock Option Plan for Non-Employee Directors (the "Safesite
Option Plans") to provide that in the event of a change of control of Safesite,
options under such plans that would have vested over the next two years will
vest as of the consummation of such change of control (with no effect on any
options not vesting within such two-year period). Consummation of the Merger
will result in the accelerated vesting of options under such plans to purchase
39,000 shares of Safesite Common Stock held by a Director and executive officer
of Safesite. In addition, it is a condition to closing the Merger that Iron
Mountain or its nominee acquire a parcel of real property in Rochester, New York
from one of the Safesite Principal Stockholders for a purchase price of
$2,700,000 and acquire two parcels of real property in Billerica, Massachusetts
from affiliates of the Safesite Principal Stockholders for an aggregate purchase
price of $4,600,000. Each such property is currently leased to Safesite and is
used in Safesite's business. Safesite and Iron Mountain believe that the terms
of such purchases are no more favorable to the owners of such properties than
would be negotiated with an unrelated third party. Harvey H. Bundy III, a
Director and stockholder of Safesite, is also a principal of William Blair &
Company, L.L.C. ("William Blair"), which is receiving a fee from Iron Mountain
for serving as its financial advisor in connection with the Merger. Golisano, a
Safesite Director and the controlling stockholder of Safesite, will be appointed
a Class A Director of Iron Mountain following the Closing Date. See "Risk
Factors--Risk Factors Related to the Merger--Interests of Certain Persons in the
Transactions" and "The Merger Agreement--Treatment of Options."


Rights of Dissenting Stockholders

     Pursuant to the Delaware General Corporation Law (the "DGCL"), any holder
of Safesite Common Stock (i) who files a demand for appraisal in writing prior
to the vote taken at the Safesite Stockholders Meeting, (ii) whose shares are
not voted in favor of the Merger and (iii) who follows certain other procedural
requirements, if the Merger is consummated, shall be entitled to appraisal
rights under Section 262 of the DGCL ("Section 262"). See "Rights of Dissenting
Stockholders." The Safesite Principal Stockholders, pursuant to the
Stockholders' Agreement, have waived their appraisal rights with respect to
their shares of Safesite Common Stock.


Comparative Per Share Market Price Information

     On February 19, 1997, the trading day prior to the announcement of the
Merger, the closing sales price of the Iron Mountain Common Stock, as reported
on the Nasdaq National Market, was $27.125. On March 27, 1997, the closing sales
price of the Iron Mountain Common Stock, as reported on the Nasdaq National
Market, was $25.00. No established public trading market exists for the Safesite
Common Stock, and, accordingly, no price information is available with respect
thereto. See "Market Prices and Dividend Data."

     Holders of Safesite Common Stock are urged to obtain current market
quotations prior to making any decision with respect to the Merger.



                                        7

<PAGE>



Iron Mountain Summary and Pro Forma Information


     The following summary historical consolidated statements of operations and
balance sheet data of Iron Mountain as of and for each of the years ended
December 31, 1992, 1993, 1994, 1995 and 1996 have been derived from Iron
Mountain's audited consolidated financial statements. The summary historical and
pro forma financial data set forth below should be read in conjunction with "Pro
Forma Condensed Consolidated Financial Information" and the Notes thereto, with
"Description of Iron Mountain--Iron Mountain's Selected Financial and Operating
Information" and the Notes thereto, with "--Management's Discussion and Analysis
of Financial Condition and Results of Operations" and with Iron Mountain's
Consolidated Financial Statements and the Notes thereto included elsewhere in
this Prospectus.

<TABLE>
<CAPTION>

                                                                     Year Ended December 31,
                                               -----------------------------------------------------------------------
                                                                     Historical                            Pro Forma
                                               ---------------------------------------------------------
                                                  1992         1993        1994         1995        1996       1996 (1)
                                                  ----         ----        ----         ----        ----       --------
Consolidated Statements of Operations Data:                          (Dollars in Thousands)
<S>                                             <C>          <C>         <C>          <C>         <C>         <C>
Revenues:
       Storage..............................    $44,077      $48,892     $54,098      $64,165     $85,826     $110,502
       Service and Storage Material Sales...     26,596       32,781      33,520       40,271      52,892       74,608
                                                -------      -------     -------      -------     -------     --------
              Total Revenues................     70,673       81,673      87,618      104,436     138,718      185,110
Operating Expenses:
       Cost of Sales (Excluding             
         Depreciation)......................     35,169       43,054      45,880       52,277      70,747       91,684
       Selling, General and Administrative..     17,630       19,971      20,853       26,035      34,342       45,972
       Depreciation and Amortization........      5,780        6,789       8,690       12,341      16,936       25,266
                                                -------      -------     -------      -------     -------     --------
              Total Operating Expenses......     58,579       69,814      75,423       90,653     122,025      162,922
                                                -------      -------     -------      -------     -------     --------
Operating Income............................    $12,094      $11,859     $12,195      $13,783     $16,693      $22,188
                                                =======      =======     =======      =======     =======     ========
Other Data:
EBITDA(2)     ..............................    $17,874      $18,648     $20,885      $26,124     $33,629      $47,454
EBITDA as a Percentage of Total Revenues....       25.3%        22.8%       23.8%        25.0%       24.2%        25.6%
Capital Expenditures:
       Growth(3)(4).........................    $11,226      $13,605     $15,829      $14,395     $23,334           --
       Maintenance..........................        818        1,846       1,151          858       1,112           --
                                                -------      -------     -------      -------     -------     --------
Total Capital Expenditures (4)..............    $12,044      $15,451     $16,980      $15,253     $24,446           --
Approximate Cartons in Storage at end of
       Period (in millions)(5)..............       12.6         15.5        17.7         23.3        30.6         34.7




                                                                                        As of December 31, 1996
                                                                                        -----------------------
Adjusted EBITDA and Credit Ratios:
Adjusted EBITDA(6).......................................................................................   $49,373
Ratio of Net Debt to Adjusted EBITDA (7).................................................................      4.57


                                        8

<PAGE>



                                                                                         As of December 31, 1996
                                                                                         ------------------------
                                                                                                              Pro
                                                                                               Historical   Forma(8)
                                                                                               ----------   --------
Balance Sheet Data:
Cash and Cash Equivalents....................................................................      $3,453     $3,674
Total Assets.................................................................................     281,799    378,694
Total Debt...................................................................................     184,733    229,179
Stockholders' Equity.........................................................................      52,384    101,334
</TABLE>

- -------------------
(1)  Gives effect to: (i) the Recent Acquisitions; (ii) the Merger; (iii) the
     consummation of Iron Mountain's Initial Public Offering and the application
     of the net proceeds therefrom; (iv) the closing under the Credit Agreement;
     and (v) the consummation of Iron Mountain's public offering of Iron
     Mountain's Senior Subordinated Notes, which closed on October 1, 1996 (the
     "Note Offering") and the application of the net proceeds therefrom, as if
     each had occurred as of January 1, 1996. See "Pro Forma Condensed
     Consolidated Financial Information." Does not give effect to any potential
     impact of recent fires at two of Iron Mountain's facilities. See
     "Description of Iron Mountain--Management's Discussion and Analysis of
     Financial Condition and Results of Operations--Overview."

(2)  Earnings before interest, taxes, depreciation, amortization and
     extraordinary items ("EBITDA"). Based on its experience in the records
     management industry, Iron Mountain believes that EBITDA is an important
     tool for measuring the performance of records management companies
     (including potential acquisition targets) in several areas, such as
     liquidity, operating performance and leverage. In addition, lenders use
     EBITDA as a criterion in evaluating records management companies, and
     substantially all of Iron Mountain's financing agreements contain covenants
     in which EBITDA is used as a measure of financial performance. However,
     EBITDA should not be considered an alternative to operating or net income
     (as determined in accordance with GAAP) as an indicator of Iron Mountain's
     performance or to cash flow from operations (as determined in accordance
     with GAAP) as a measure of liquidity. See "Description of Iron
     Mountain--Management's Discussion and Analysis of Financial Condition and
     Results of Operations--Overview" and "--Liquidity and Capital Resources"
     for discussions of other measures of performance determined in accordance
     with GAAP and Iron Mountain's sources and applications of cash flow.

(3)  Growth capital expenditures include investments in racking systems, new
     buildings and leasehold improvements, equipment for new facilities,
     management information systems and facilities restructuring. See
     "Description of Iron Mountain--Management's Discussion and Analysis of
     Financial Condition and Results of Operations--Liquidity and Capital
     Resources--Capital Investments."

(4)  Includes $2,901 in 1994 related to the cost of constructing a records
     management facility which was sold in a sale and leaseback transaction in
     the fourth quarter of 1994.

(5)  The term "Carton" is defined as a measurement of the volume equal to a
     single standard storage carton, approximately 1.2 cubic feet. The number of
     Cartons stored does not include storage volumes in Iron Mountain's vital
     records services and data protection services which are described under
     "Description of Iron Mountain--Description of Iron Mountain's Records
     Management Services." Pro forma Carton information is not available.

(6)  Gives effect to (i) the Recent Acquisitions completed after September 30,
     1996 and (ii) the Merger. Adjusted EBITDA, as defined in the Note
     Indenture, equals the sum of (i) EBITDA of Iron Mountain and its restricted
     subsidiaries for the most recent fiscal quarter for which internal
     financial statements are available, multiplied by four, plus (ii)
     Acquisition EBITDA of each business that has been acquired by Iron Mountain
     since the beginning of such quarter (including any such acquisition which
     is occurring on the date of the calculation), multiplied by a fraction, (a)
     the numerator of which is three minus the number of months (and/or any
     portion thereof) in such quarter for which the financial results of such
     acquired business are included in EBITDA of Iron Mountain and its
     restricted subsidiaries under clause (i) above, and (b) the denominator of
     which is three. In addition, the effects of unusual or non-recurring items
     occurring in any relevant period are excluded in the calculation of
     Adjusted EBITDA. With respect to any such acquired business, Acquisition
     EBITDA equals the sum of (i) EBITDA of such acquired business for its last
     fiscal quarter for which financial statements are available, multiplied by
     four (or if such quarterly statements are not available, EBITDA for the
     last fiscal year for which financial statements are available), plus (ii)
     projected quantifiable improvements in operating results (on an annualized
     basis) due to cost reductions calculated in good faith by Iron Mountain,
     without giving effect to any operating losses of the acquired business.
     Such projected quantifiable savings may differ from the cost savings used
     to calculate the Pro Forma Condensed Consolidated Statement of Operations
     of Iron Mountain. Adjusted EBITDA is merely a calculation utilized for
     purposes of debt incurrence under the Note Indenture and should not be
     viewed as indicative of actual or future results.

(7)  Net debt represents total debt less cash and cash equivalents and was
     calculated based on the pro forma net debt as of December 31, 1996 of
     $229.2 million.

(8)  Gives effect to: (i) the Recent Acquisitions consummated in 1997; and (ii)
     the Merger, as if each had occurred as of December 31, 1996. See "Pro Forma
     Condensed Consolidated Financial Information."


                                        9

<PAGE>



Safesite Summary Financial Information

     The following summary historical statements of operations and balance sheet
data of Safesite as of and for each of the years ended December 31, 1992, 1993,
1994, 1995 and 1996 have been derived from Safesite's audited financial
statements. The summary historical financial data set forth below should be read
in conjunction with "Description of Safesite--Safesite's Selected Financial and
Operating Information" and the Notes thereto, with "--Management's Discussion
and Analysis of Financial Condition and Results of Operations" and with
Safesite's Financial Statements and the Notes thereto included elsewhere in this
Proxy Statement.

<TABLE>
<CAPTION>

                                                                    Year Ended December 31,
                                                    ------------------------------------------------------------
                                                       1992        1993         1994         1995          1996
                                                       ----        ----         ----         ----          ----
Statements of Operations Data:                                      (Dollars in Thousands)
<S>                                                   <C>         <C>          <C>           <C>          <C>
Revenues:
        Storage................................       $3,580      $4,780       $5,886        $7,059       $8,300
        Service and Storage Material Sales.....        5,474       6,107        7,350         8,955       10,709
                                                     -------     -------       ------        ------       ------
              Total Revenues...................        9,054      10,887       13,236        16,014       19,009
Operating Expenses:
        Cost of Sales (Excluding
            Depreciation)......................        4,663       6,486        6,665         8,054        9,463
        Selling, General and Administrative....        5,818       4,642        4,975         6,444        7,587
        Depreciation and Amortization..........          582         804          622           657          800
                                                     -------     -------       ------        ------       ------
              Total Operating Expenses.........       11,063      11,932       12,262        15,155       17,850
                                                     -------     -------       ------        ------       ------
Operating Income (Loss)........................      $(2,009)    $(1,045)        $974          $859       $1,159
                                                     =======     =======       ======        ======       ======
 
Other Data:
EBITDA(1)     .................................      $(1,427)      $(241)      $1,596        $1,516       $1,959
EBITDA as a Percentage of Total Revenues.......        (15.8)%      (2.2)%       12.0%          9.5%        10.3%

Capital Expenditures...........................       $1,038        $762         $733        $1,718       $1,984
Approximate Cartons in Storage at end of
        Period (in millions)(2)................           --          --          1.6           2.0          2.4

                                                                                         As of December 31, 1996
                                                                                         ------------------------
Balance Sheet Data:
Cash and Cash Equivalents..........................................................................         $221
Total Assets.......................................................................................        7,064
Total Debt.........................................................................................          225
Stockholders' Equity...............................................................................        4,567
</TABLE>

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

(1)  Earnings before interest, taxes, depreciation, amortization and
     extraordinary items ("EBITDA"). See "Description of Safesite--Management's
     Discussion and Analysis of Financial Condition and Results of
     Operations--Overview" and "--Liquidity and Capital Resources" for
     discussions of other measures of performance determined in accordance with
     GAAP and Safesite's sources and applications of cash flow.

(2)  Carton information is not available for 1992 and 1993.


                                       10

<PAGE>



Comparative Per Share Data

     The following table sets forth (i) historical earnings and book value per
share for Iron Mountain, (ii) historical earnings and book value per share for
Safesite, (iii) unaudited pro forma combined earnings and book value per share
for Iron Mountain, and (iv) unaudited pro forma equivalent combined earnings and
book value per share for Safesite. Neither Iron Mountain nor Safesite has ever
declared a cash dividend on its capital stock. The unaudited pro forma combined
share data gives effect to the Merger and the Recent Acquisitions (as defined
herein) consummated in 1997. The data set forth below should be read in
conjunction with Iron Mountain's Consolidated Financial Statements and the Notes
thereto, with Safesite's Financial Statements and the Notes thereto and with
"Pro Forma Condensed Consolidated Financial Information," included elsewhere in
this Proxy Statement.

<TABLE>
<CAPTION>

                                                                                              Year Ended or as of
                                                                                               December 31, 1996
                                                                                              -------------------
<S>                                                                                                  <C>
Historical:
  Iron Mountain
     Income before extraordinary charge per common and
       common equivalent share...........................................................            $.01
     Book value per share................................................................            5.17
  Safesite
     Earnings per common and common equivalent share.....................................            $.11
     Book value per share................................................................             .50
Pro forma:
  Iron Mountain
     Loss before extraordinary charge per common share...................................           $(.29)
     Book value per share................................................................            8.58
  Safesite equivalent pro forma
     Earnings per common and common equivalent share.....................................            $.48
     Book value per share................................................................            2.19
</TABLE>


                                       11

<PAGE>

                                  RISK FACTORS


Risk Factors Related to the Iron Mountain Common Stock

     Safesite stockholders should carefully consider the following risk factors,
in addition to the other information contained in this Proxy Statement, in
connection with their decisions to approve the Merger Agreement.

     Risks Associated with Acquisition Strategy. Iron Mountain has pursued and
intends to continue to pursue acquisitions of records management businesses as a
key component of its growth strategy. Since mid-1994, Iron Mountain has acquired
or entered into agreements to acquire 30 companies (of which 29 have been
completed and the Merger is pending) engaged in records management and related
businesses for purchase prices aggregating approximately $198.8 million (not
including contingent payments of up to $4.8 million based upon the achievement
of certain revenue targets during 1997 and 1998). Other than the Merger, all
such acquisitions have been for cash. See "Description of Iron Mountain--Recent
and Pending Acquisitions." Possible future acquisitions (including the Merger)
may be for purchase prices significantly larger than those paid for acquisitions
consummated since mid-1994. Certain risks are inherent in an acquisition
strategy, such as increasing leverage and debt service requirements and
combining disparate company cultures and facilities, which could adversely
affect Iron Mountain's operating results. The success of any completed
acquisition (including the Merger) will depend in part on Iron Mountain's
ability to integrate effectively the acquired records management business into
Iron Mountain. The process of integrating such acquired businesses may involve
unforeseen difficulties and may require a disproportionate amount of
management's attention and Iron Mountain's financial and other resources. No
assurance can be given that additional suitable acquisition candidates will be
identified, financed and purchased on acceptable terms, or that recent
acquisitions or future acquisitions (including the Merger), if completed, will
be successful. See "Description of Iron Mountain--Growth Strategy--Growth
through Acquisitions."

     Acquisitions by Iron Mountain involving in excess of $30 million in cash
individually and $75 million in cash in the aggregate per year ($100 million in
the aggregate in stock, cash or notes) require the approval of lenders holding
51% or more of the commitments under the Credit Agreement, dated as of September
30, 1996, among Iron Mountain, the lenders party thereto and The Chase Manhattan
Bank, as Administrative Agent, as amended (the "Credit Agreement"). No assurance
can be given that the lenders will consent to any acquisitions that Iron
Mountain proposes to make in excess of such limits.

     The size, timing and integration of possible future acquisitions may cause
substantial fluctuations in operating results from quarter to quarter. As a
result, operating results for any quarter may not be indicative of the results
that may be achieved for any subsequent fiscal quarter or for a full fiscal
year.

     Competition; Alternative Technologies. Iron Mountain faces competition from
one or more competitors in all geographic areas where it operates. Iron Mountain
believes that competition for customers is based on price, reputation for
reliability, quality of service and scope and scale of technology, and believes
that it generally competes effectively based on these factors. As a result of
this competition, the records management industry has for the past several years
experienced downward pricing pressures. While Iron Mountain believes that this
pricing climate is stabilizing, there can be no assurance that prices will not
decline further, as competitors seek to gain or preserve market share. Should a
further downward trend in pricing occur or continue for an extended period of
time, it could have a material adverse effect on Iron Mountain's results of
operations. Iron Mountain also competes for acquisition candidates. Some of Iron
Mountain's competitors may possess greater financial and other resources than
Iron Mountain. If any such competitor were to devote additional resources to the
records management business and such acquisition candidates or to focus its
strategy on Iron Mountain's markets, Iron Mountain's results of operations could
be adversely affected. In addition, Iron Mountain faces competition from the
internal document handling capability of its current and potential customers.
There can be no assurance that these organizations will outsource more of their
document management needs or that they will not bring in-house some or all of
the

                                       12

<PAGE>



functions they currently outsource. See "Description of Iron Mountain--The
Records Management Industry" and "--Competition."

     The substantial majority of Iron Mountain's revenues have been derived from
the storage of paper documents and from related services. Such storage requires
significant physical space. Alternative technologies for generating, capturing,
managing, transmitting and storing information have been developed, many of
which require significantly less space than paper. Such technologies include
computer media, microforms, audio/video tape, film, CD-ROM and optical disk.
None of these technologies has replaced paper as the principal means for storing
information. However, there can be no assurance that one or more non-paper-based
technologies (whether now existing or developed in the future) may not in the
future reduce or supplant the use of paper as a preferred medium, which could in
turn adversely affect Iron Mountain's business.

     Financial Leverage; Debt Service Requirements. Iron Mountain is highly
leveraged due to the substantial indebtedness it has incurred primarily to
finance acquisitions and expand its operations. As of December 31, 1996, Iron
Mountain had $184.7 million in total indebtedness and $52.4 million in
stockholders' equity. Iron Mountain expects to continue to borrow under the
Credit Agreement and possible future credit arrangements in order to finance
possible future acquisitions and for general corporate purposes.

     The ability of Iron Mountain to repay its indebtedness depends upon future
operating performance, which is subject to the success of Iron Mountain's
business strategy, prevailing economic conditions, levels of interest rates and
financial, business and other factors, many of which are beyond Iron Mountain's
control. The debt service obligations of Iron Mountain could have important
consequences, including the following: (i) the ability of Iron Mountain to
obtain additional financing for future working capital needs or for possible
future acquisitions or other purposes may be limited; (ii) a substantial portion
of Iron Mountain's cash flow from operations will be dedicated to the payment of
principal and interest on its indebtedness, thereby reducing funds available for
other purposes; (iii) Iron Mountain may be more vulnerable to adverse economic
conditions than some of its competitors and thus may be limited in its ability
to withstand competitive pressures; and (iv) Iron Mountain may be more highly
leveraged than certain of its competitors, which may place it at a competitive
disadvantage.

     A substantial portion of Iron Mountain's cash flow from operations is
required for debt service. Management believes that cash flow from operations in
conjunction with borrowings from existing and possible future credit facilities
will be sufficient for the foreseeable future to meet debt service requirements
and to make possible future acquisitions and capital expenditures. However,
there can be no assurance in this regard, and Iron Mountain's leverage could
make it vulnerable to a downturn in the operating performance of its
subsidiaries, a downturn in economic conditions or, because borrowings under the
Credit Agreement bear interest at rates which fluctuate, increases in interest
rates on borrowings under the Credit Agreement. If such cash flow were not
sufficient to meet such debt service requirements or payments of principal, Iron
Mountain could be required to sell additional equity securities, refinance its
obligations or dispose of assets in order to make such scheduled payments. There
can be no assurance that Iron Mountain would be able to effect any of such
transactions or do so on favorable terms.

     Casualty. Iron Mountain currently maintains and intends to continue to
maintain, to the extent such insurance is available on commercially reasonable
terms, comprehensive liability, fire, flood and earthquake (where appropriate)
and extended coverage insurance with respect to the properties that it now owns
or leases or that it may in the future own or lease, with customary limits and
deductibles. Certain types of loss, however, may not be fully insurable on a
cost-effective basis, such as losses from earthquakes, or may be altogether
uninsurable, such as losses from riots. In addition, as of December 31, 1996, 25
of Iron Mountain's 109 records management facilities were located in California
and Iron Mountain derived approximately 28.5% of its revenues for 1996 from its
operations in California. Iron Mountain has in the past suffered damages and
losses from an earthquake and a riot in California, which damages and losses
were substantially covered by insurance. In addition, two of Iron Mountain's
facilities suffered extensive damage as a result of recent fires. See
"Description of Iron Mountain--Management's Discussion and Analysis of Financial
Condition and Results of Operations--Overview" for a description of such
casualty and its anticipated impact on Iron Mountain. In the future, should
uninsured losses or damages occur, Iron

                                       13

<PAGE>



Mountain could lose both its investment in and anticipated profits and cash flow
from the affected property and may continue to be obligated on any leasehold
obligations, mortgage indebtedness or other obligations related to such
property. As a result, any such loss could materially adversely affect Iron
Mountain. See "Description of Iron Mountain--Insurance" and "--Management's
Discussion and Analysis of Financial Condition and Results of
Operations--Overview."

     Anti-Takeover Effect of Certain Provisions of Iron Mountain's Certificate
of Incorporation, By-Laws and the Note Indenture. Certain provisions of Iron
Mountain's Amended and Restated Certificate of Incorporation (the "Iron Mountain
Restated Certificate") and the Iron Mountain By-Laws could have the effect of
making it more difficult for a third party to acquire, or discouraging a third
party from acquiring, a majority of the outstanding capital stock of Iron
Mountain and could make it more difficult to consummate certain types of
transactions involving an actual or potential change in control of Iron
Mountain, such as a merger, tender offer or proxy contest. See "Description of
Iron Mountain Capital Stock--DGCL and Certain Provisions of the Iron Mountain
Restated Certificate and the Iron Mountain By-Laws." The Iron Mountain Restated
Certificate also provides for three classes of Directors, as equal in number as
possible, to be elected on a staggered basis (one class per year). As a result
of such a provision, it would generally require at least two elections of the
Board of Directors of Iron Mountain (the "Iron Mountain Board") to replace a
majority of the members of the Iron Mountain Board, thereby enabling existing
management to exercise significant control over Iron Mountain's affairs during
such period. Pursuant to the Iron Mountain Restated Certificate, shares of Iron
Mountain's Preferred Stock, par value $.01 per share (the "Preferred Stock"),
may be issued in the future without further stockholder approval and upon such
terms and conditions, and having such rights, privileges and preferences
(including the right to vote and the right to convert into Iron Mountain Common
Stock), as the Iron Mountain Board may determine. See "Description of Iron
Mountain Capital Stock--Preferred Stock."

     Iron Mountain currently has outstanding $165 million in principal amount of
its 10 1/8% Senior Subordinated Notes due 2006 (the "Senior Subordinated
Notes"). Under certain circumstances relating to a change of control of Iron
Mountain (a "Change of Control") as set forth in the Indenture (the "Note
Indenture") relating to the Senior Subordinated Notes, Iron Mountain will be
required to make an offer to purchase all of the Senior Subordinated Notes then
outstanding at a purchase price, in cash, equal to 101% of the principal amount
thereof plus accrued and unpaid interest, if any, to the date of purchase. There
can be no assurance that Iron Mountain would be able to obtain such funds
through a refinancing of the Senior Subordinated Notes to be purchased or
otherwise, or that the purchase would be permitted under the Credit Agreement.
Also, the requirement that Iron Mountain make an offer to purchase all Senior
Subordinated Notes then outstanding in the event of a Change of Control may have
the effect of deterring a third party from effecting a transaction that would
constitute a Change of Control.

     Control by Principal Stockholders. Giving effect to the consummation of the
Merger at an assumed Determination Price of $28.50 and assuming all Exercisable
Options are exercised prior to the Effective Time, Schooner Capital Corporation
("Schooner"), Vincent J. Ryan, C. Richard Reese, B. Thomas Golisano, Eugene B.
Doggett and James B. Wayman, Jr. (collectively, the "Iron Mountain Principal
Stockholders") would own approximately 45.9% of the Iron Mountain Common Stock
and voting power. The voting power held by the Iron Mountain Principal
Stockholders may have the effect of discouraging certain types of transactions
involving an actual or potential change of control of Iron Mountain, including
transactions in which the holders of Iron Mountain Common Stock might otherwise
receive a premium for their shares over then-current market prices. In addition,
as a result of such voting power, the Iron Mountain Principal Stockholders will
have the ability to significantly affect the election of Directors of Iron
Mountain who, in turn, control the management and affairs of Iron Mountain. See
"Principal Stockholders of Iron Mountain" and "Description of Iron Mountain
Capital Stock."

     Environmental Matters. As of December 31, 1996, Iron Mountain owned or
leased approximately 7.3 million square feet of facilities. Under various
federal, state and local environmental laws, ordinances and regulations
("Environmental Laws"), an owner of real estate or a lessee conducting
operations thereon may become liable for the costs of investigation, removal or
remediation of soil and groundwater contaminated by certain hazardous substances
or wastes or petroleum products. Certain such laws impose cleanup responsibility
and liability without

                                       14

<PAGE>



regard to whether the owner or operator of the real estate or operations thereon
knew of or was responsible for the contamination, and whether or not operations
at the property have been discontinued or title to the property has been
transferred. In addition, the presence of such substances, or the failure to
properly remediate such property, may adversely affect the current property
owner's or operator's ability to sell or rent such property or to borrow using
such property as collateral. The owner or operator of contaminated real estate
also may be subject to common law claims by third parties based on damages and
costs resulting from off-site migration of the contamination.

     Certain Environmental Laws govern the removal, encapsulation or disturbance
of asbestos-containing materials ("ACMs"). Such laws may impose liability for
release of ACMs and may enable third parties to seek recovery from owners or
operators of real estate for personal injury associated with exposure to such
substances. Certain facilities operated by Iron Mountain contain or may contain
ACMs. Certain of the properties formerly or currently owned or operated by Iron
Mountain were previously used for industrial or other purposes that involved the
manufacture, use or storage of hazardous substances or petroleum products or the
generation and disposal of hazardous wastes, and in some instances, included the
operation of underground storage tanks ("USTs"). In addition, certain of such
properties are adjacent to or near Superfund sites or other contaminated
properties.

     In connection with its former and current ownership or operation of certain
properties, Iron Mountain may be potentially liable for environmental costs such
as those discussed above and as more specifically described under "Description
of Iron Mountain--Environmental Matters." Iron Mountain has from time to time
conducted certain environmental investigations and remedial activities at
certain of its former and current facilities, but an in-depth environmental
review of the properties has not been conducted by or on behalf of Iron
Mountain.

     Iron Mountain believes it is in substantial compliance with all applicable
material Environmental Laws. Iron Mountain has not received any written notice
from any governmental authority or third party asserting, and is not otherwise
aware of, any material environmental noncompliance, liability or claim relating
to hazardous substances or wastes, petroleum products or material Environmental
Laws applicable to its operations in connection with any of its present or
former properties other than as described under "Description of Iron
Mountain--Environmental Matters." However, no assurance can be given that there
are, or as a result of possible future acquisitions there will be, no
environmental conditions for which Iron Mountain might be liable in the future
or that future regulatory action, as well as compliance with future
Environmental Laws, will not require Iron Mountain to incur costs for or at its
properties that could have a material adverse effect on Iron Mountain's
financial condition and results of operations.

     No Intention to Pay Dividends. Iron Mountain has never declared or paid
cash dividends on its capital stock. Iron Mountain intends to retain future
earnings for use in its business and does not anticipate declaring or paying any
cash dividends on shares of Iron Mountain Common Stock in the foreseeable
future. In addition, Iron Mountain is currently restricted under the terms of
the Credit Agreement and Note Indenture from declaring or paying cash dividends
on its Common Stock. See "Market Prices and Dividend Data," "Description of Iron
Mountain Capital Stock--Common Stock--Dividends" and Note 3 of Notes to Iron
Mountain's Consolidated Financial Statements.


Risk Factors Related to the Merger

     Value of Merger Consideration. The number of shares of Iron Mountain Common
Stock to be issued in the Merger will be based upon the Determination Price. If
the Determination Price equals the floor price of $26.00 and the market price of
the Iron Mountain Common Stock at the time of the Closing is less than such
floor price, then the value of the merger consideration to be received by the
Safesite stockholders could be less than $62,000,000 in the aggregate and
approximately $6.53 per share. On March 27, 1997, the closing sales price per
share of the Iron Mountain Common Stock, as reported on the Nasdaq National
Market, was $25.00 and the Determination Price calculated as of such date was
approximately $26.33. The converse is true if the Determination Price equals the
ceiling price of $31.00 and the market price of the Iron Mountain Common Stock
at the time of the Closing is

                                       15

<PAGE>



greater than such ceiling price. In such instance, the Merger consideration to
be received by the Safesite stockholders would exceed $62,000,000 in the
aggregate and approximately $6.53 per share.

     Restrictions on Transfer of Iron Mountain Common Stock. In order to protect
the tax-free nature of the Merger, approximately 62% of the shares of Iron
Mountain Common Stock received by each Safesite stockholder may not be
transferred by such stockholder for a period of one year following the Effective
Time. For a full description of the Transfer Restrictions and the formula which
will be used to determine the percentage of shares which will be subject to the
Transfer Restrictions, see "The Merger Agreement--Conversion of Safesite Common
Stock--Restrictions on Transfer of Iron Mountain Common Stock." Neither Iron
Mountain nor Safesite can predict the price at which shares of Iron Mountain
Common Stock will be trading at the end of the one-year restriction period. The
value of the shares of Iron Mountain Common Stock issued to Safesite
stockholders in the Merger would be adversely affected if the trading price
following the end of the one-year period was less than the Determination Price
at the Effective Time.

     Interests of Certain Persons in the Transactions. In considering the
recommendation of the Safesite Board with respect to the Merger, stockholders of
Safesite should be aware that certain members of Safesite's management and the
Safesite Board have certain interests in the Merger that may present them with
actual or potential conflicts of interest. On May 24, 1996, Safesite amended the
Safesite Option Plans to provide that in the event of a change of control of
Safesite, options under such plans that would have vested over the next two
years will vest as of the consummation of such change of control (with no effect
on any options not vesting within such two-year period). Consummation of the
Merger will result in the accelerated vesting of options to purchase 39,000
shares of Safesite Common Stock under such plans held by a Director and
executive officer of Safesite. In addition, it is a condition to closing the
Merger that Iron Mountain or its nominee acquire a parcel of real property in
Rochester New York from one of the Safesite Principal Stockholders for a
purchase price of $2,700,000 and acquire two parcels of real property in
Billerica, Massachusetts from affiliates of the Safesite Principal Stockholders
for an aggregate purchase price of $4,600,000. Each such property is currently
leased to Safesite and is used in Safesite's business. Safesite and Iron
Mountain believe that the terms of such purchases are no more favorable to the
owners of such properties than would be negotiated with an unrelated third
party. Harvey H. Bundy III, a Director and stockholder of Safesite, is also a
principal of William Blair, which is receiving a fee from Iron Mountain for
serving as its financial advisor in connection with the Merger. Golisano, a
Director and the controlling stockholder of Safesite will be appointed a Class A
Director of Iron Mountain following the Closing Date.

                                       16

<PAGE>



                        THE SAFESITE STOCKHOLDERS MEETING


     At the Safesite Stockholders Meeting or any adjournments or postponements
thereof, holders of shares of Safesite Common Stock will be asked to approve and
adopt the Merger Agreement.

     THE SAFESITE BOARD HAS UNANIMOUSLY APPROVED THE MERGER AGREEMENT, BELIEVES
THAT APPROVAL AND ADOPTION OF THE MERGER AGREEMENT IS IN THE BEST INTERESTS OF
SAFESITE AND ITS STOCKHOLDERS AND UNANIMOUSLY RECOMMENDS THAT SAFESITE'S
STOCKHOLDERS VOTE FOR THE APPROVAL AND ADOPTION OF THE MERGER AGREEMENT.


Record Date; Quorum; Required Vote

     The Record Date for the determination of shares of those holders of
Safesite Common Stock entitled to notice of, and to vote at, the Safesite
Stockholders Meeting is March 31, 1997. Only holders of record of shares of
Safesite Common Stock at the close of business on the Record Date will be
entitled to notice of, and to vote at, the Safesite Stockholders Meeting or any
adjournments or postponements thereof. As of the Record Date, there were
outstanding 9,111,447 shares of Safesite Common Stock held by 80 holders of
record. The holders of Safesite Common Stock are entitled to one vote per share.
The presence in person or by proxy of a majority of shares entitled to vote as
of the Record Date is required to constitute a quorum for the transaction of
business at the Safesite Stockholders Meeting. The Merger Agreement must be
approved and adopted by holders of a majority of the outstanding shares of
Safesite Common Stock entitled to vote at the Safesite Stockholders Meeting.
Abstentions and broker non-votes are considered present for purposes of
determining a quorum and will have the same effect as a vote against the Merger
Agreement.

     In connection with the execution of the Merger Agreement, certain
stockholders of Safesite and Iron Mountain entered into the Stockholders'
Agreement, pursuant to which the Safesite Principal Stockholders (who control
66.1% of the voting power of outstanding Safesite Common Stock) agreed, among
other things, to vote all of the shares of Safesite Common Stock controlled by
them (and granted to Iron Mountain their proxies to vote all such shares) (i) in
favor of the adoption of the Merger Agreement, (ii) against any action or
agreement that would result in a breach in any material respect of any covenant,
representation or warranty or any other obligation of Safesite under the Merger
Agreement, and (iii) against any proposal for any merger, consolidation,
recapitalization, sale of assets, business combination, or other material charge
in Safesite's corporate structure or business that is inconsistent with or that
would, or is reasonably likely to, directly or indirectly, impede, interfere
with or attempt to discourage the Merger or any other transaction contemplated
by the Merger Agreement. See "Ancillary Agreements--Stockholders' Agreement."


Solicitation and Voting of Proxies

     Stockholders of record on the Record Date are entitled to cast their votes,
in person or by properly executed proxy, at the Safesite Stockholders Meeting.
All shares represented at the Safesite Stockholders Meeting by properly executed
proxies received prior to or at the Safesite Stockholders Meeting and not
properly revoked will be voted at the Safesite Stockholders Meeting in
accordance with the instructions indicated in such proxies. If no instructions
are indicated, such proxies will be voted FOR approval of the Merger Agreement.
The Safesite Board does not know of any matters, other than the Merger
Agreement, that will come before the Safesite Stockholders Meeting.

     If a quorum is not present at the time the Safesite Stockholders Meeting is
convened, or if for any other reason Safesite believes that additional time
should be allowed for the solicitation of proxies or for the satisfaction of

                                       17

<PAGE>



conditions to the Merger or the transactions contemplated thereby, Safesite may
adjourn the Safesite Stockholders Meeting with a vote of the holders of a
majority of the shares of Safesite Common Stock present at such meeting. If
Safesite proposes to adjourn the Safesite Stockholders Meeting, the persons
named in the enclosed proxy card will vote all shares for which they have voting
authority in favor of such adjournment.

     Any proxy given pursuant to this solicitation may be revoked in the
following manner by the person giving it at any time before it is voted. Proxies
may be revoked by (i) filing with the Secretary of Safesite, at or before the
Safesite Stockholders Meeting, a written notice of revocation bearing a date
later than the date of the proxy, (ii) duly executing a subsequent proxy
relating to the same shares and delivering it to the Secretary of Safesite at or
before the Safesite Stockholders Meeting or (iii) attending the Safesite
Stockholders Meeting and voting in person (although attendance at the Safesite
Stockholders Meeting will not in and of itself constitute revocation of a
proxy). Any written notice revoking a proxy should be sent to Safesite, 96 High
Street, North Billerica, Massachusetts 01862, Attention: James B. Wayman, Jr.,
President.

     Proxies are being solicited by and on behalf of the Safesite Board. All
expenses of this solicitation, including the cost of preparing and mailing this
Proxy Statement (except for photocopying and mailing costs, which will be shared
with Iron Mountain), will be borne by Safesite. In addition to solicitation by
use of the mails, proxies may be solicited by Directors, officers and employees
of Safesite in person or by telephone, telegram or other means of
communications. Such Directors, officers and employees will not be additionally
compensated, but may be reimbursed for out-of-pocket expenses in connection with
such solicitation. Arrangements will be made with custodians, nominees and
fiduciaries for forwarding of proxy solicitation materials to beneficial owners
of Safesite Common Stock held of record by such persons, and Safesite may
reimburse such custodians, nominees and fiduciaries for reasonable expenses
incurred in connection therewith.




                                       18

<PAGE>



Ownership of Safesite Common Stock

     The following table provides information as of March 28, 1997, with respect
to the shares of Safesite Common Stock beneficially owned by (i) each person
known by Safesite to own more than 5% of the outstanding Safesite Common Stock,
(ii) each Director of Safesite, (iii) each executive officer of Safesite and
(iv) all Directors and executive officers of Safesite as a group. The number of
shares beneficially owned by each Director or executive officer is determined
according to the rules of the Commission, and the information is not necessarily
indicative of beneficial ownership for any other purpose. Under such rules,
beneficial ownership includes any shares as to which the individual or entity
has sole or shared voting power or investment power and also any shares which
the individual or entity has the right to acquire within 60 days of March 28,
1997 (or upon consummation of the Merger) through the exercise of an option,
conversion feature or similar right. The amount of beneficial ownership of Iron
Mountain Common Stock after the Merger assumes 1,751,228 shares will be issued
in the Merger, based on a Determination Price of $28.50 (the mid-point of the
range between the floor price of $26.00 and the ceiling price of $31.00) and all
Exercisable Options are exercised prior to the Effective Time.

<TABLE>
<CAPTION>

                                                                                          Amount of Beneficial
                                              Amount of Beneficial Ownership           Ownership of Iron Mountain
                                                 of Safesite Common Stock                     Common Stock
                                                    Before the Merger                       After the Merger
                                         -------------------------------------------------------------------------------
                                                                          Percent                             Percent
Name(1)                                             Shares                 Owned          Shares               Owned
<S>                                               <C>                       <C>           <C>                   <C>
Directors and Executive Officers
B. Thomas Golisano(2)...................          5,290,185                 58.0%           976,291              8.5%
James B. Wayman, Jr.(3).................          1,262,787                 13.7%           233,044              2.0%
Mary Fay Kattman(4).....................             15,000                     *             2,768                 *
David F. Bellet(5)......................             86,419                     *            15,948                 *
Harvey H. Bundy III(6)..................            326,441                  3.6%            60,243                 *
G. Thomas Clark(7)......................             31,828                     *             5,873                 *
All Directors and executive
 officers as a group (6 persons) (8)....          7,012,660                 76.1%         1,294,167             11.3%
</TABLE>

- ----------------------
  *    Less than 1%

(1)    Except as otherwise indicated, the persons named in the table above have
       sole voting and investment power with respect to all shares of Safesite
       Common Stock shown as beneficially owned by them.

(2)    Mr. Golisano is a Director and Chairman of the Board of Safesite.
       Includes 15,000 shares of Safesite Common Stock that Mr. Golisano has the
       right to acquire pursuant to Exercisable Options. Mr. Golisano's address
       is c/o Paychex, Inc., 911 Panorama Trail South, Rochester, New York
       14625.

(3)    Mr. Wayman is a Director and President and Chief Executive Officer of
       Safesite. Includes 69,461 shares of Safesite Common Stock controlled by
       Mr. Wayman as custodian for his children, and 409,760 shares of Safesite
       Common Stock owned by Roselee Wayman, his wife residing at the same
       address, as to which Mr. Wayman disclaims beneficial ownership. Also
       includes 106,000 shares of Safesite Common Stock that Mr. Wayman has the
       right to acquire pursuant to Exercisable Options. Mr. Wayman's address is
       251 Old Billerica Road, Bedford, Massachusetts 01730.

(4)    Ms. Kattman is the Treasurer and Secretary of Safesite. Consists of
       15,000 shares of Safesite Common Stock that Ms. Kattman has the right to
       acquire pursuant to Exercisable Options. Ms. Kattman's address is 15
       Elmwood Road, Marblehead, Massachusetts 01945.

(5)    Mr. Bellet is a Director of Safesite. Includes 15,000 shares of Safesite
       Common Stock that Mr. Bellet has the right to acquire pursuant to
       Exercisable Options. Mr. Bellet's address is 125 E. 72nd Street, 11-D,
       New York, New York 10021.

(6)    Mr. Bundy is a Director of Safesite. Includes 77,630 shares of Safesite
       Common Stock controlled by Blakely F. Bundy as trustee for the Blakely F.
       Bundy 1992 Trust, 5,093 shares controlled by Blakely F. Bundy as
       custodian for Reed F. Bundy, and 228,718 shares controlled by Mr. Bundy
       in his capacity as trustee of various trusts, as to which Mr. Bundy
       disclaims beneficial ownership. Also includes 15,000 shares of Safesite
       Common Stock that Mr. Bundy has the right to acquire pursuant to
       Exercisable Options. Mr. Bundy's address is c/o William Blair & Company,
       L.L.C., 222 West Adams Street, Chicago, Illinois 60606, and Blakely Bundy
       is his wife.

(7)    Mr. Clark is a Director of Safesite. Mr. Clark's address is 1492 East
       Avenue, Rochester, New York 14610.

(8)    Includes 166,000 shares of Safesite Common Stock that Directors and
       executive officers have the right to acquire pursuant to Exercisable
       Options.


                                       19

<PAGE>



                            BACKGROUND OF THE MERGER


General Background of the Merger

     Prior Negotiations. Safesite and Iron Mountain had preliminary discussions
regarding an acquisition of Safesite by Iron Mountain in February 1996, which
were summarily terminated. Safesite management did not solicit the February 1996
offer.

     Negotiations of the Merger. In November 1996, Iron Mountain again
approached Safesite with an unsolicited offer to acquire Safesite's assets for
Iron Mountain stock. The Safesite Board considered the offer, suggested that a
tax-free structure would be more acceptable and authorized Golisano to negotiate
the terms of a potential acquisition by Iron Mountain. Iron Mountain countered
with an offer to acquire Safesite in an all-stock merger and a simultaneous
purchase of three parcels of real property owned by Golisano and Wayman that
were leased to Safesite for the appraised fair market value of such properties.
C. Richard Reese, the Chairman of the Board and Chief Executive Officer of Iron
Mountain, and Golisano had several conversations during the next several weeks
concerning a possible transaction.

     Late in December 1996, the parties commenced due diligence investigations
of each other and negotiated the terms of a non-binding letter of intent for a
merger of Safesite and Iron Mountain for a fixed number of shares of Iron
Mountain Common Stock. The parties determined that discussions relating to the
proposed business combination had advanced to a point by the end of December and
beginning of January where the parties should proceed to negotiate definitive
documentation, although negotiations regarding pricing terms were not final.
During this period, Iron Mountain also proposed a stockholders' agreement
pursuant to which Messrs. Golisano and Wayman would contractually agree, among
other things, to vote in favor of a merger transaction with Iron Mountain.
Negotiations continued into January 1997 and were nearly complete by the end of
January.

     Safesite received a second unsolicited bid from another bidder in late
January to acquire Safesite for a combination of stock and cash and commenced a
due diligence review process with such bidder. Both the fact that another bid
had been received and that due diligence investigations of such party had
commenced were communicated to Iron Mountain, but not the terms of the competing
bid. Several weeks later, Iron Mountain made a formal offer, by letter dated
February 12, 1997, to acquire Safesite for $62 million, a portion of which equal
to 19.5% would be payable in cash and the remaining 80.5% of which would be
payable in Iron Mountain Common Stock, thus ensuring tax-free treatment, and to
acquire the related real estate for $7.3 million in cash. The offer stated that
the amount of stock to be issued by Iron Mountain would not be fixed but would
be based on a market price calculation, with a "collar" with a mid-point range
of $28.50, or a floor of $26.00 and a ceiling of $31.00. The Iron Mountain offer
was not contingent on further due diligence and contained a liquidated damages
provision that, if the offer were accepted but either party failed to execute a
definitive agreement in substantially the form previously negotiated, then such
party would be required to pay to the other party $5 million. The offer was open
until February 14, 1997.

     A special meeting of the Safesite Board was convened on February 14, 1997
to consider the matter, attended by a majority of the Safesite Board, with
Messrs. Golisano, Wayman and Bellet present. Messrs. Bundy and Clark were unable
to attend but had discussed the matter extensively with Mr. Golisano who
conveyed their comments to the other Directors at the meeting. After
considerable deliberation regarding Iron Mountain's offer and the competing
offer, the Safesite Board determined that the terms of the Iron Mountain
proposed merger are fair to, and in the best interests of, Safesite and its
stockholders, approved the Iron Mountain offer with certain changes, which were
accepted by Iron Mountain, and resolved to recommend that the Safesite
stockholders vote for approval and adoption of the Merger Agreement. Iron
Mountain's offer letter, with revisions, was signed by both parties on February
15, 1997.


                                       20

<PAGE>



     On February 18, 1997, representatives of the competing bidder submitted a
revised offer to Safesite. The Safesite Board met on February 19, 1997 to
consider the competing proposal and Safesite's obligations under the February
15, 1997 letter with Iron Mountain. All Directors were present. Numerous aspects
of both proposals were considered, including their nominal value, likelihood of
closing, certainty that the indicated nominal value would be the actual value
received by stockholders, long-term prospects of the potential merger partners
and relative marketability of the stock of the potential merger partners. The
Safesite Board rejected the competing proposal and unanimously reaffirmed its
determination that the terms of the Merger are fair to, and in the best
interests of, Safesite and its stockholders, approved the Merger, and resolved
to recommend that the Safesite stockholders vote for approval and adoption of
the Merger Agreement.

     Accordingly, on February 19, 1997 officers of Safesite and Iron Mountain
executed the Merger Agreement, and Iron Mountain, Golisano and Wayman executed
the Stockholders' Agreement.

     Amendment to Merger Agreement. Shortly after the Merger Agreement was
executed, Safesite requested that Iron Mountain amend the Merger Agreement to
protect the tax-free nature of the Merger by restricting the ability of Safesite
stockholders to transfer a portion of the Iron Mountain Common Stock received in
the Merger. The parties concluded that the most efficient method of achieving
such a restriction would be to amend the Iron Mountain By-Laws to include a
restriction on the ability of the Safesite stockholders to sell a specified
percentage of the Iron Mountain Common Stock received in the Merger by each
Safesite Stockholder for a period of one year following the consummation of the
Merger. See "The Merger Agreement--Conversion of Safesite Common
Stock--Restrictions on Transfer of Iron Mountain Common Stock." The Safesite
Board viewed such a restriction as desirable because if the rules regarding
continuity of interest in a tax-free reorganization were either intentionally or
inadvertently violated, then the transaction could be taxable to the Safesite
stockholders as a group. The Stockholders' Agreement already contained a
provision restricting the ability of Golisano and Wayman (and any other
stockholders becoming parties to the Stockholders' Agreement) from selling a
certain percentage of the shares of Iron Mountain Common Stock received in the
Merger if Sub, rather than Safesite, were to be the surviving corporation. This
restriction was requested by Iron Mountain to protect it from a potential tax
liability.

     On March 28, 1997, the entire Safesite Board met to consider the amendment
to the Merger Agreement, which would make a condition to the consummation of the
Merger Iron Mountain's adoption of an amendment to its ByLaws containing
restrictions prohibiting transfers, sales, assignments or other dispositions of
a specified percentage of the shares of Iron Mountain Common Stock to be
received by each former Safesite stockholder in the Merger for a period of one
year following the Effective Time. The Safesite Board concluded the amendment to
the Merger Agreement requiring Iron Mountain to impose such restrictions on
transfer was reasonable and unanimously approved it. An amendment to the Merger
Agreement was executed on April 1, 1997.


Recommendation of the Safesite Board; Safesite's Reasons for the Merger

     The Safesite Board believes that the Merger Agreement and the transactions
contemplated thereby are fair to, and in the best interests of, its
stockholders. The Safesite Board recommends that the stockholders of Safesite
vote FOR the approval of the Merger Agreement and the transactions contemplated
thereby. The Safesite Board, in reaching its determinations, considered the
following factors, all of which were considered as a whole and not separately:

[bullet]      The purchase price offered for Safesite. An integral part of the
              determination by the Safesite Board that the Merger was in the
              best interests of, and fair to, the Safesite stockholders was a
              determination that the price that Iron Mountain was willing to pay
              for Safesite was fair. Safesite management had carefully observed
              the consolidation occurring in the records management industry and
              the prices at which acquisitions had been previously made.
              Management felt, and presented to the Safesite Board its view,
              that the aggregate purchase price of $62 million that Iron
              Mountain offered for Safesite compared favorably to (i) the sale
              prices of other companies in the records management industry
              (which were generally much smaller than Safesite), (ii) the price

                                       21

<PAGE>


     at which an investor in Safesite had recently sold a significant number of
     shares of Safesite Common Stock in an arm's length transaction to Messrs.
     Golisano, Wayman and Bundy, all of whom are Directors of Safesite, and
     (iii) the valuation estimates that were presented to the Safesite Board by
     investment bankers when the Safesite Board and management were considering
     an initial public offering of equity, as discussed below. The Safesite
     Board concluded that it was unlikely that another buyer would offer
     Safesite stockholders a more favorable combination of price, certainty of
     closing, liquidity, tax deferral, and long term-investment prospects than
     what Iron Mountain had offered. Based on the foregoing, the Safesite Board
     concluded that the Merger was fair, from a financial point of view, to the
     stockholders of Safesite.

[bullet]      The tax aspects of the Merger Agreement. The Safesite Board
              reviewed with its counsel and with management the provisions of
              the Merger Agreement and determined that its terms permitted
              Safesite to achieve the tax-free disposition of its business for
              marketable securities in a manner that is fair to the Safesite
              stockholders.

[bullet]      Choice of liquidity or continued investment for Safesite
              stockholders. The Safesite Board viewed as favorable the structure
              of the proposed merger with Iron Mountain that afforded Safesite
              stockholders immediate liquidity as to a portion of their Safesite
              holdings and a choice of whether to seek complete or increased
              liquidation after the Merger through a sale of Iron Mountain
              Common Stock on the open market or to continue their investment in
              Safesite, through Iron Mountain, a larger, better-capitalized,
              well-situated company.

[bullet]      The strategic aspects of the Merger. By receiving Iron Mountain
              Common Stock, the Safesite stockholders will have an investment in
              a larger company, which the Safesite Board believed offered
              greater financial resources and flexibility, competitive strength
              and business opportunities than would be possible for Safesite
              alone. The Safesite Board thus concluded that the Merger provides
              Safesite stockholders with better long-term prospects and
              liquidity than if they continued to hold their Safesite shares.

[bullet]      The Safesite Board's review of the business, operations, financial
              condition, earnings and prospects of Iron Mountain. In choosing
              Iron Mountain as its merger partner, the Safesite Board considered
              and viewed favorably the high quality and reputation of Iron
              Mountain's management, the leadership that Iron Mountain has
              achieved in the highly fragmented records management industry, its
              commitment to and evidence of sustained and accelerated growth,
              both through acquisitions and internally and its plans for
              financing such growth.

[bullet]      Other possible transactions available to Safesite. As discussed
              above under "General Background of the Merger," the Safesite Board
              carefully reviewed proposals submitted by Iron Mountain and by
              another potential merger partner. The Safesite Board concluded
              that the Iron Mountain proposal offered the best combination of
              price, certainty of closing and long-term prospects of the
              potential merger partners. The Safesite Board had also considered
              periodically since April 1995 and again specifically in November
              1996 an initial public offering of equity securities of Safesite.
              Considering the various factors necessary to complete a successful
              initial public offering, the Safesite Board concluded that
              Safesite could not reasonably anticipate completing such a
              transaction for a minimum of two to three years. Furthermore,
              there could be no assurances that the market would be amenable to
              a public offering by Safesite at that time or that a more
              favorable price could be achieved.

     Based upon the foregoing, the Safesite Board concluded at its February 14,
1997 meeting and again at its February 19, 1997 meeting, that the Merger
represents the best strategic alternative currently available to maximize the
return to Safesite stockholders. In view of the wide variety of factors
considered in connection with the evaluation of the Merger, the Safesite Board
did not find it practicable to, nor did it attempt to, quantify or otherwise
assign relative weights to the specific factors it considered in reaching its
determinations.

                                       22

<PAGE>



     THE SAFESITE BOARD UNANIMOUSLY RECOMMENDS THAT HOLDERS OF SAFESITE
COMMON STOCK VOTE FOR THE PROPOSAL TO APPROVE AND ADOPT THE MERGER
AGREEMENT.


Iron Mountain's Reasons for the Merger

     The Iron Mountain Board believes that the consummation of the Merger will
constitute an important step in the implementation of Iron Mountain's strategy
of maintaining its leadership position in the records management industry
nationwide. Safesite is an attractive merger partner to Iron Mountain for a
number of reasons. Safesite is a superior records management service provider
that shares Iron Mountain's commitment to customer service and its
decentralized, local management structure. As a result of the Merger, Iron
Mountain will benefit from Safesite's strong staff and customer base, which are
evidenced by Safesite's compound annual internal growth rate of 20% in revenues
between 1993 and 1996. In addition, the Merger will significantly enhance Iron
Mountain's competitive position in the highly fragmented records management
industry through one transaction, rather than through a series of smaller
transactions. The acquisition of Safesite will result in four new market entries
for Iron Mountain, while affording it opportunities for consolidation in ten
additional markets. Following consummation of the Merger, Iron Mountain will
operate in 142 records management facilities in 40 markets nationwide, servicing
over 30,000 customer accounts.


Financial Advisor to Iron Mountain

     Iron Mountain retained William Blair to act as its financial advisor in
connection with the Merger. William Blair will receive a fee of $400,000 upon
the consummation of the Merger. In addition, Iron Mountain has agreed, among
other things, to reimburse William Blair for all out-of-pocket expenses incurred
in connection with the services provided by William Blair up to $15,000, and to
indemnify and hold harmless William Blair and certain related parties to the
full extent lawful from and against certain liabilities and expenses, including
certain liabilities under the federal securities laws, in connection with its
engagement. Harvey H. Bundy III, a Director and stockholder of Safesite, is also
a principal of William Blair.


                              THE MERGER AGREEMENT


     The following is a brief summary of the material provisions of the Merger
Agreement, a copy of which is attached as Annex I to this Proxy Statement and is
incorporated by reference herein. This summary is qualified in its entirety by
reference to the full and complete text of the Merger Agreement.


The Merger

     At the Effective Time, Sub will be merged with and into Safesite, with
Safesite continuing as the Surviving Corporation and a wholly owned subsidiary
of Iron Mountain. As a result of the Merger, the separate corporate existence of
Sub will cease. Pursuant to the terms of the Merger Agreement, at Iron
Mountain's option, the Merger may be restructured as a merger of Safesite with
and into Sub, with Sub continuing as the Surviving Corporation. Subject to the
terms and conditions of the Merger Agreement, the closing of the transactions
contemplated thereby will take place on the fifth business day after the date on
which the last of the conditions set forth in the Merger Agreement is fulfilled
or waived, other than conditions requiring deliveries at the closing, unless
another date is agreed to by Iron Mountain and Safesite. The Merger will become
effective at the Effective Time, which will be the time at which the Certificate
of Merger is filed with the Secretary of State of the State of Delaware or such
time thereafter as is provided in the Certificate of Merger.

                                       23

<PAGE>




Conversion of Safesite Common Stock

     Form and Value of Consideration to be Received in the Merger. The
consideration to be issued by Iron Mountain in the Merger will consist of
$12,090,000 in cash (subject to adjustment as described below) and shares of
Iron Mountain Common Stock having a market value of $49,910,000 based upon the
Determination Price.

     The cash to be issued in the Merger (the "Cash Amount") will be reduced by
the amount, if any, that Safesite's indebtedness for borrowed money as of the
Effective Time exceeds $500,000. Safesite's indebtedness for borrowed money as
of March 27, 1997 equaled approximately $730,000. On the Closing Date,
$3,000,000 will be withheld ratably from the cash consideration payable to
Safesite stockholders and holders of Exercisable Options and held in escrow for
one year to indemnify and hold harmless Iron Mountain from certain claims under
the Merger Agreement. Anyone holding Dissenting Shares will not contribute to
the escrow amount or be subject to the indemnification obligations. See
"--Indemnification."

     The number of shares of Iron Mountain Common Stock to be issued (the
"Common Stock Amount") will be based upon the average closing price per share of
Iron Mountain Common Stock for the period of 20 trading days ending three
trading days prior to the Closing Date (the "Determination Price"), provided,
however, that if the average closing price per share for such period is less
than $26.00, the Determination Price shall be $26.00 and if the average closing
price per share for such period is greater than $31.00, the Determination Price
shall be $31.00. Accordingly, if the Determination Price is less than $26.00 or
greater than $31.00, the aggregate value of Iron Mountain Common Stock to be
issued in the Merger will be less than or greater than, as the case may be,
$49,910,000. See "Risk Factors--Risk Factors Related to the Merger." The
Determination Price calculated for the 20 trading days ending March 27, 1997 was
$26.33.

     Conversion of Safesite Common Stock. Upon consummation of the Merger, each
share of Safesite Common Stock issued and outstanding immediately prior to the
Effective Time will be converted into the right to receive, subject to certain
indemnification provisions in the Merger Agreement, shares of Iron Mountain
Common Stock equal to the Stock Conversion Number plus cash in an amount equal
to the Cash Conversion Number. The Stock Conversion Number is the quotient of
(i) the Common Stock Amount divided by (ii) the number of Fully Diluted Shares.
The Cash Conversion Number is the quotient of (i) the Cash Amount divided by
(ii) the number of Fully Diluted Shares.

     Assuming that there is no adjustment to the Cash Amount, that the
Determination Price equals $28.50 (the mid-point in the range between the floor
price of $26.00 and the ceiling price of $31.00) and that the number of Fully
Diluted Shares equals 9,489,297 (the number as of March 27, 1997), each share of
Safesite Common Stock (other than Dissenting Shares) would be converted at the
Effective Time into the right to receive approximately 0.1845 shares of Iron
Mountain Common Stock and approximately $1.27 in cash, having an aggregate
value, based on the Determination Price, of approximately $6.53. The
Determination Price calculated for the 20 trading days ending March 27, 1997 was
$26.33.

     Restrictions on Transfer of Iron Mountain Common Stock. As more fully
described below, in order to protect the tax-free nature of the Merger,
approximately 62% of the Iron Mountain Common Stock received by each Safesite
stockholder in the Merger will be subject to the Transfer Restrictions until the
first anniversary date of the Effective Time. The Transfer Restrictions will
prohibit all "Transfers" (defined below) of such Iron Mountain Common Stock by
former Safesite stockholders. Any purported transfer of the economic, record or
beneficial ownership of the Subject Shares (as defined below) not permitted by
the Iron Mountain By-Laws will be void and have no legal effect. The following
description of the Transfer Restrictions is qualified in its entirety by
reference to the complete text of Article XII of the Iron Mountain By-Laws (in
which the Transfer Restrictions are set forth), a copy of which is attached
hereto as Annex II and incorporated herein by reference. Pursuant to such
Article, any person who receives shares of Iron Mountain Common Stock in the
Merger will not be able to Transfer, and Iron Mountain will not be required to
register the Transfer of, the number of shares,


                                       24

<PAGE>


rounded upward to the nearest whole share (the "Subject Shares"), of Iron
Mountain Common Stock equal to the product of (1) the quotient obtained by
dividing (x) the "Lock-up Value" by (y) the product of (A) the Common Stock
Amount and (B) the lesser of the Closing Price and the Determination Price
multiplied by (2) the shares of Iron Mountain Common Stock received by such
person in the Merger, until the first anniversary of the Effective Time, except
as otherwise allowed by the Iron Mountain Board in its sole discretion. The
"Lock-up Value" shall mean one half (1/2) of the sum of (x) the product of the
Common Stock Amount and the lesser of the Closing Price and the Determination
Price plus (y) the Cash Amount. The "Closing Price" shall mean the closing price
per share of Iron Mountain Common Stock for the trading day immediately prior to
the Effective Time. The closing price for such trading day shall be the last
quoted sale price or, if not so quoted, the average of the low bid and high
asked prices on the Nasdaq National Market. A "Transfer" means any indirect or
direct transfer, offer to sell, sale, assignment, grant of an option to acquire,
pledge, or other disposition. The Transfer Restrictions, by their own terms,
automatically expire on the first anniversary of the Effective Time. Each
certificate representing the Subject Shares will bear a legend indicating that
the shares represented by such certificates are subject to the Transfer
Restrictions.


Treatment of Options

     As soon as reasonably practicable after the Effective Time, each holder of
an Exercisable Option will receive (1) a non-qualified option to acquire shares
of Iron Mountain Common Stock under the Iron Mountain Stock Option Plan, which
option for Iron Mountain Common Stock shall (A) have an exercise price per share
determined by dividing the exercise price per share of the applicable option by
the Stock Conversion Number and (B) entitle the holder to purchase that number
of shares equal to the product of (x) the number of shares subject to such
option that as of the Effective Time is exercisable and (y) the Stock Conversion
Number, and (2) cash in the amount of the product of (x) the number of shares
subject to such option that as of the Effective Time is exercisable and (y) the
Cash Conversion Number. Pursuant to the terms of the Merger Agreement, in lieu
of issuing cash in respect of Exercisable Options, Iron Mountain has reserved
the right, in its sole discretion, subject to notification to Safesite not less
than ten (10) days prior to the Closing Date, to exchange each Exercisable
Option solely for an option to acquire Iron Mountain Common Stock.

     With respect to any such option or portion thereof that is not exercisable
at the Effective Time and with respect to certain other options to acquire
17,500 shares of Safesite Common Stock recently granted to five individuals,
each holder will receive a non-qualified option to acquire shares of Iron
Mountain Common Stock under the Iron Mountain Stock Option Plan at an exercise
price and in an amount affording the holder equivalent value for the option
being exchanged, which option for Iron Mountain Common Stock will (A) have an
exercise price per share determined by dividing (x) the exercise price per share
of the applicable option by (y) the quotient of the Share Price divided by the
Determination Price, and (B) entitle the holder to purchase that number of
shares equal to the product of (x) the number of shares subject to such option
that as of the Effective Time is not exercisable and (y) the quotient of the
Share Price divided by the Determination Price. Share Price is the quotient of
(x) the sum of $49,910,000 and the Cash Amount divided by (y) the number of
Fully Diluted Shares. In addition, any such option to acquire Iron Mountain
Common Stock will be exercisable (subject to the terms of such option and the
Iron Mountain Stock Option Plan) on the date the applicable option would have
been exercisable and otherwise be subject to the terms and conditions of the
Iron Mountain Stock Option Plan.

     By accepting an option to acquire Iron Mountain Common Stock under the Iron
Mountain Stock Option Plan, Safesite option holders will be agreeing to all of
the terms and conditions of the Iron Mountain Stock Option Plan and the option
agreements entered into pursuant thereto (provided that the terms of the Iron
Mountain option agreement, as to any employee of Safesite, other than the
Safesite Principal Stockholders, who is not employed by Iron Mountain or any of
its affiliates on the first anniversary of the Closing Date, shall not (a) make
it a condition to exercise such option that such employee be in compliance with
an Iron Mountain confidentiality or non-competition agreement and (b) require
such employee to pay to Iron Mountain the excess of the fair market value on the
day of exercise over the exercise price as a result of being employed by a
competitor of Iron Mountain within 


                                       25

<PAGE>


two years after the exercise of such option). In lieu of issuing any option to
acquire a fractional share of Iron Mountain Common Stock, the surrendering
option holder shall receive an option to purchase the nearest whole number of
shares of Iron Mountain Common Stock. For a description of the Iron Mountain
Stock Option Plan, see "Management of Iron Mountain--Stock Option Information."


Indemnification

     Safesite has agreed, and by approving the Merger Agreement, Safesite's
stockholders will agree, that $3,000,000 in cash will be withheld ratably from
the cash Merger consideration payable to Safesite stockholders (other than
holders of Dissenting Shares) and holders of Exercisable Options and held in
escrow to indemnify Iron Mountain and hold Iron Mountain harmless for a period
of one year following the Closing Date from and against all damages, claims,
losses, expenses, costs, obligations and liabilities suffered by Iron Mountain
by reason of any breach of Safesite's representations and warranties contained
in the Merger Agreement or failure of Safesite to perform or fulfill any of its
covenants or agreements set forth in the Merger Agreement, any legal action or
other claim by a third party relating to Safesite to the extent such action or
claim results in a breach of a representation or warranty, or the indebtedness
for borrowed money of Safesite as of the Effective Time exceeding $500,000.
Accordingly, on the Closing Date, $3,000,000 will be withheld on a ratable basis
from the cash portion of the merger consideration otherwise payable to
Safesite's stockholders (and holders of Exercisable Options) and held in escrow
pursuant to the terms of the Escrow Agreement. In addition, Safesite has agreed
and Safesite's stockholders, by approving the Merger Agreement, will agree, to
appoint Golisano, or such other person or persons to whom Golisano delegates
such authority, as their agent and attorney-in-fact, with full power of
substitution, to take all actions on their behalf in connection with the
indemnification provisions of the Merger Agreement and the Escrow Agreement.
Iron Mountain may only recover on a claim if all loss and expense for all claims
exceeds, in the aggregate, $150,000, and in no event will the aggregate amount
required to be paid to Iron Mountain exceed $3,000,000. See "Ancillary
Agreements--Escrow Agreement" for a description of the terms and conditions of
the Escrow Agreement.


Exchange Procedures

     As soon as reasonably practicable after the Effective Time, The First
National Bank of Boston, in its capacity as Exchange Agent (the "Exchange
Agent"), will mail to each holder of record of a certificate or certificates
which immediately prior to the Effective Time evidenced outstanding shares of
Safesite Common Stock (other than Dissenting Shares and other than shares owned
by Safesite as treasury stock and shares owned by Iron Mountain or by any
subsidiary or Iron Mountain) ("Safesite Certificates") (i) a letter of
transmittal and (ii) instructions to effect the surrender of the Safesite
Certificates in exchange for the total consideration to be received by such
holder as a result of multiplying (x) each of the Stock Conversion Number and
the Cash Conversion Number by (y) the number of shares represented by such
holder's Safesite Certificates (such total, the "Exchange Merger
Consideration").

     Upon surrender of a Safesite Certificate for cancellation to the Exchange
Agent, together with the letter of transmittal, duly executed, and such other
documents as Iron Mountain or the Exchange Agent reasonably requests, the holder
of such Safesite Certificate will be entitled to receive promptly in exchange
therefor the Exchange Merger Consideration, subject to the amounts to be placed
in escrow pursuant to the indemnification provisions of the Merger Agreement
(see "--Indemnification"), and the Safesite Certificate so surrendered shall
forthwith be canceled. Until surrendered, each Safesite Certificate will, at any
time after the Effective Time, represent only the right to receive, upon such
surrender, the Exchange Merger Consideration with respect to the shares of
Safesite Common Stock formerly represented thereby, without interest. Each
Safesite stockholder will receive separate stock certificates representing the
Subject Shares and shares of Iron Mountain Common Stock that are not subject to
the Transfer Restrictions.

                                       26

<PAGE>




     HOLDERS OF SAFESITE COMMON STOCK SHOULD NOT SEND SAFESITE CERTIFICATES WITH
THE ENCLOSED PROXY CARD. SAFESITE STOCKHOLDERS SHOULD SEND SAFESITE CERTIFICATES
TO THE EXCHANGE AGENT ONLY AFTER THEY RECEIVE, AND IN ACCORDANCE WITH THE
INSTRUCTIONS ACCOMPANYING, THE LETTER OF TRANSMITTAL.

     No fractional shares of Iron Mountain Common Stock will be issued upon the
surrender for exchange of Safesite Certificates, and such fractional shares will
not entitle the owner thereof to vote or to any rights of a stockholder of Iron
Mountain. In lieu of issuing fractional shares, the surrendering stockholder
shall receive the highest whole number of shares or Iron Mountain Common Stock
constituting the stock portion of the Exchange Merger Consideration plus cash
equal to the fraction of a share of Iron Mountain Common Stock to which the
holder would otherwise be entitled multiplied by the Determination Price.

     No dividends or other distributions declared after the Effective Time on
Iron Mountain Common Stock will be paid with respect to any shares of Iron
Mountain Common Stock represented by a Safesite Certificate until such Safesite
Certificate is surrendered for exchange in accordance with the procedures
described above.


Representations and Warranties

     The Merger Agreement contains certain customary representations and
warranties relating to, among other things: (a) each of Iron Mountain's and
Safesite's organization and similar corporate matters; (b) each of Iron
Mountain's and Safesite's capital structure; (c) the authorization, execution,
delivery, performance and enforceability of the Merger Agreement with respect to
Iron Mountain and Safesite; (d) documents filed by Iron Mountain with the
Commission and the accuracy of the information contained therein; (e) certain
financial matters with respect to Safesite; (f) Safesite's leases; (g)
governmental and private authorizations of Safesite; (g) the absence of
undisclosed material litigation and other undisclosed liabilities relating to
Safesite; (h) the absence of material changes with respect to the business of
Safesite; (i) certain tax and employee benefit matters with respect to Safesite;
(j) the records storage business of Safesite; and (k) certain environmental
matters with respect to Safesite. Safesite's representations and warranties
survive the Closing for a period of one year.


Certain Covenants

     The Merger Agreement contains certain customary covenants and agreements,
including, without limitation, the following:

     Conduct of Business. Safesite has agreed that, during the period from the
date of the most recent balance sheet forming a part of Safesite's financial
statements until the Closing Date, except as permitted by the Merger Agreement
or as otherwise consented to in writing by Iron Mountain, Safesite has operated
and will operate its business in the ordinary course of business, consistent
with prior practice. In addition, without limiting the generality of the
foregoing, Safesite has agreed that it will not, among other things, subject to
certain exceptions: (a) sell or otherwise dispose of or contract to sell or
otherwise dispose of, any of its properties or assets, other than in the
ordinary course of business; (b) incur any obligations or liabilities; (c) enter
into any commitments; (d) cancel any debts or claims; (e) make or commit to make
any additions to its property or any purchases of machinery or equipment, except
in the ordinary course of business, consistent with past practice; (f) discharge
or satisfy any lien or pay any obligation or liability other than current
liabilities or obligations under contracts then existing or thereafter entered
into in the ordinary course of business, consistent with prior practice, and
commitments under leases or repay or prepay long-term indebtedness or the
current portion thereof; (g) create or permit to be created any lien on any of
its assets; (h) except in the ordinary course of business, consistent with prior
practice, increase the compensation payable or to become payable to any of its
Directors, officers, employees, advisers, consultants, salesmen or agents or
otherwise alter, modify or change the terms of their employment or engagement;
(i) enter into, amend or terminate any lease, governmental authorization,
private authorization, material agreement or


                                       27
<PAGE>


employment arrangement or any contractual obligation or transaction with any
affiliate, except for terminations in the ordinary course of business,
consistent with prior practice, in accordance with the terms thereof; (j) amend
or terminate any insurance policies and coverage; (k) amend any provision of its
certificate of incorporation, by-laws or other agreements applicable to any of
its capital stock; (l) issue any additional shares of capital stock (other than
the issuance of shares in accordance with the terms of option securities
outstanding on the date of the Merger Agreement) or any option securities or
convertible securities or enter into any agreement to do the same; and (m) enter
into any other transaction or series of related transactions which individually
or in the aggregate is material to Safesite, except in the ordinary course of
business.

     Agreement to Cooperate. Each of the parties has agreed to use its best
efforts to take, or cause to be taken, all actions and to do, or cause to be
done, all things necessary, proper or advisable under applicable law to
consummate the Merger and make effective the transactions contemplated thereby,
including using its best efforts (i) to obtain any governmental authorizations
legally required for the consummation of the Merger and the transactions
contemplated thereby, (ii) to effect all necessary registrations, filings and
submissions (including without limitation filings under federal or state
securities laws or the Hart-Scott-Rodino Antitrust Improvements Act of 1976, and
the rules and regulations thereunder (the "HSR Act") and any other submissions
requested by the Commission, the Federal Trade Commission or the Department of
Justice) and (iii) to lift any injunction or other legal bar to the Merger and
the transactions contemplated thereby (and, in such case, to proceed with the
Merger and the transactions contemplated thereby as expeditiously as possible),
subject, however, to the requisite vote of the Safesite's stockholders. Each of
Safesite and Iron Mountain has filed requisite notification under the HSR Act
and is awaiting termination of the waiting period. Each of the parties has
further agreed to use its best efforts to achieve the prompt termination or
expiration of any waiting period or any extension thereof under the HSR Act. The
parties have agreed that Iron Mountain will not be required to divest, abandon,
license or take similar action with respect to any assets (tangible or
intangible) of it or any of its subsidiaries (including, without limitation, the
Surviving Corporation after consummation of the Merger) in connection with or as
a condition to receiving the consent or approval of any authority.

     Safesite has agreed to cause its independent accountants to cooperate with
Iron Mountain and has agreed to prepare Safesite's audited financial statements
for inclusion in the Registration Statement of which this Proxy Statement forms
a part. Safesite has also agreed that it will (i) consent to the use of such
audited financial statements in any registration statement or other document
filed by Iron Mountain (or any of its subsidiaries) under the Securities Act or
the Exchange Act, and (ii) execute and deliver, and cause its officers to
execute and deliver, such "representation" letters as are customarily delivered
in connection with audits and as Iron Mountain's independent accountants may
reasonably request under the circumstances.

     Registration Rights Agreement. Iron Mountain, Golisano and Wayman have
agreed that they will enter into a registration rights agreement (the
"Registration Rights Agreement") with respect to the shares of Iron Mountain
Common Stock to be issued to them in connection with the Merger, and have agreed
to the basic terms of such Registration Rights Agreement. See "Ancillary
Agreements--Registration Rights Agreement; Restrictions on Transfer under the
Federal Securities Laws."

     No Solicitation. Safesite has agreed that it will not, nor will it permit
any of its representatives (including, without limitation, any investment
banker, attorney or accountant retained by it) to initiate, solicit or
facilitate, directly or indirectly, any inquiries or the making of any proposal
with respect to a transaction or series of related transactions resulting in (a)
any change in control of Safesite, (b) any merger or consolidation of Safesite,
regardless of whether Safesite is the surviving entity, (c) any tender offer or
exchange offer for, or any acquisition of, any securities of Safesite, (d) any
sale or other disposition of assets of Safesite not otherwise permitted under
the Merger Agreement, or (e) so long as the Merger Agreement remains in effect,
any issuance or sale, or any agreement to issue or sell any capital stock,
convertible securities or option securities of Safesite (other than the issuance
of shares in accordance with the terms of outstanding option securities) (each,
an "Other Transaction"). Safesite has also agreed not to engage in any
discussions or negotiations concerning, or provide to any other person any
information or data relating to, it for the purposes of, or otherwise cooperate
in any way with or assist or participate in, or

                                       28

<PAGE>


facilitate any inquiries or the making of any proposal which constitutes, or may
reasonably be expected to lead to, a proposal to seek or effect an Other
Transaction, or agree to or endorse any Other Transaction. However, neither
Safesite nor the Safesite Board is prohibited from making any disclosure to
Safesite's stockholders that, in the reasonable judgment of the Safesite Board
in accordance with, and based upon the written advice of, outside counsel, is
required under applicable law. Safesite has agreed to promptly advise Iron
Mountain of, and communicate the material terms of, any proposal it may receive,
or any inquiries it receives which may reasonably be expected to lead to such a
proposal relating to an Other Transaction, and the identity of the person making
it. Safesite will further advise Iron Mountain of the status and changes in the
material terms of any such proposal or inquiry (or any amendment to any of
them). During the term of the Merger Agreement, Safesite has agreed not to enter
into any agreement oral or written, and whether or not legally binding, with any
person that provides for, or in any way facilitates, an Other Transaction, or
affects any other obligation of Safesite under the Merger Agreement.

     Directors' and Officers' Indemnification and Insurance. The parties have
agreed that the Surviving Corporation will indemnify, defend and hold harmless
the present and former officers and Directors of Safesite against all claims or
amounts that, with the approval of the Surviving Corporation as to settlements
only, are paid in settlement of or otherwise in connection with any claim based
in whole or in part on the fact that such person is or was a Director or officer
of Safesite and arising out of actions or omissions occurring at or prior to the
Effective Time (including, without limitation, the Merger and the transactions
contemplated thereby), in each case to the fullest extent currently provided
under Safesite's certificate of incorporation and by-laws (but only to the
extent permitted under the DGCL), and will pay any expenses in advance of the
final disposition of any such action or proceeding to each such person to the
fullest extent permitted under the DGCL, upon receipt from the person to whom
expenses are advanced of an undertaking to repay such advances to the extent
required under the DGCL. Iron Mountain has guaranteed the performance by the
Surviving Corporation of all of its obligations with respect to such
indemnification and any related payments.

     Employee Benefits; Severance Policy. The parties have agreed that the
Surviving Corporation may, in its sole discretion, substitute employee
compensation, benefit and severance programs for those of Safesite that are
comparable to the programs provided from time to time to Iron Mountain's
employees and the employees of Iron Mountain's subsidiaries.

     Certain Actions Concerning Business Combinations. Safesite has agreed that
it will not apply, and will not take any action resulting in the application of,
or otherwise elect to apply, the provisions of applicable state takeover laws,
if any, with respect to or as a result of the Merger or the transactions
contemplated thereby.

     Conversion of Options. Safesite has agreed to take all action necessary (a)
to provide timely written notice to all persons holding option securities of
Safesite to the effect that all option securities outstanding as of the
Effective Time will be exchanged for options to acquire Iron Mountain Common
Stock and cash (in the case of Exercisable Options), and (b) to obtain any
consent or waiver from the holder of an option security which may be necessary
to give effect to such exchange.

     Tax Treatment. Each of the parties has agreed to use its reasonable best
efforts to cause the Merger to qualify as a reorganization under the provisions
of Section 368(a) of the Code and to obtain opinions of counsel as to such
qualification. Iron Mountain has also agreed that it will not dispose of
Safesite for a period of one year after the Closing Date, except as permitted
under Section 368(a)(2)(C) of the Code and the administrative authorities under
Section 368 of the Code, or unless it first has received an opinion of counsel,
addressed to Iron Mountain and Safesite's stockholders, that the proposed
disposition will not affect the tax-free nature of the Merger.

    Meeting of Safesite Stockholders. Safesite has agreed, as promptly as
practicable, to duly call, give notice of, convene and hold the Safesite
Stockholders Meeting. Safesite has agreed, through the Safesite Board, to
include in this Proxy Statement the conclusion and recommendation of the
Safesite Board to the effect that the Safesite Board, having determined that the
Merger Agreement, the Merger and the transactions contemplated thereby are in
the best 
                                       29

<PAGE>


interests of Safesite and its stockholders, has approved the Merger Agreement,
the Merger and the transactions contemplated thereby and recommends that
Safesite's stockholders vote in favor of the approval and adoption of the Merger
Agreement, the Merger and the transactions contemplated thereby, and to use its
best efforts to obtain the necessary approval and adoption of the Merger
Agreement, the Merger and the transactions contemplated thereby.

     Certain Other Covenants. Safesite and Iron Mountain have also agreed, among
other things: (i) that Safesite will use its best efforts to cause to be
delivered to Iron Mountain, prior to the Closing Date, a letter from each
"affiliate" of Safesite; (ii) to consult with each other prior to issuing any
press release or public statement with respect to the Merger Agreement, the
Merger or any transaction contemplated thereby; (iii) that Safesite will not
elect to apply, and will not take any action resulting in the application of the
provisions of applicable state takeover laws, if any, with respect to or as a
result of the Merger or the transactions contemplated thereby; and (iv) that
each will use its reasonable best efforts to have the Registration Statement, of
which this Proxy Statement is a part, declared effective under the Securities
Act as promptly as practicable after such filing, and that Safesite will use its
reasonable best efforts to cause this Proxy Statement to be mailed to its
stockholders as promptly as practicable after the Registration Statement is
declared effective under the Securities Act.


Conditions to the Merger

     Conditions to Obligations of All Parties. The obligations of Iron Mountain,
Sub and Safesite to consummate the Merger are subject to the satisfaction of the
following conditions: (a) the Merger Agreement, the Merger and the transactions
contemplated thereby shall have been approved and adopted by Safesite's
stockholders; (b) no legal action shall be pending before or threatened in
writing by any authority seeking to restrain, prohibit, make illegal or delay
materially, or seeking material damages from the party seeking to invoke such
legal action and, in case Iron Mountain is seeking to invoke such legal action,
Safesite, or to impose any adverse conditions in connection with, the
consummation of the Merger and the transactions contemplated thereby, or which
might, in the reasonable business judgment of Iron Mountain, have an adverse
effect on Iron Mountain and its subsidiaries taken as a whole assuming
consummation of the Merger; (c) other than the filing of the Certificate of
Merger in accordance with the DGCL, all authorizations, consents, waivers,
orders or approvals required to be obtained, and all filings, submissions,
registrations, notices or declarations required to be made, by Iron Mountain,
Sub and Safesite prior to the consummation of the Merger and the transactions
contemplated thereby shall have been obtained from, and made with, all required
authorities, except for such authorizations, consents, waivers, orders,
approvals, filings, registrations, notices or declarations which the failure to
obtain or make would not, in the reasonable judgment of Iron Mountain, assuming
consummation of the Merger, have an adverse effect on Safesite; (d) the filing
and waiting period requirements under the HSR Act relating to the consummation
of the Merger shall have been complied with; and (e) Iron Mountain or its
nominee and certain affiliates of Safesite shall have entered into and closed
purchase and sale agreements with respect to three properties owned by such
affiliates, for an aggregate purchase price of $7,300,000, free and clear of all
liens, other than certain permitted liens (see "Ancillary Agreements--Real
Property Purchase Agreements").

     Conditions to Obligations of Iron Mountain. The obligations of Iron
Mountain and Sub to effect the Merger are also subject to the satisfaction at or
prior to the Effective Time of the following additional conditions: (a) all
agreements, certificates, opinions and other documents shall be reasonably
satisfactory in form, scope and substance to Iron Mountain and its counsel; (b)
there shall be no material breach of any representations, warranties, covenants
and agreements of Safesite contained in the Merger Agreement or otherwise made
in writing by it or on its behalf pursuant thereto, each and all of the
agreements and conditions to be performed or satisfied by Safesite or any of its
stockholders under the Merger Agreement or under the Stockholders' Agreement at
or prior to the Closing Date shall have been duly performed or satisfied in all
material respects, and Safesite shall have furnished Iron Mountain with such
certificates and other documents evidencing the truth of such representations,
warranties, covenants and agreements and the performance of such agreements or
conditions as Iron Mountain shall have reasonably requested; (c) Safesite shall
have furnished Iron Mountain and, at Iron Mountain's request, any bank or other
financial institution providing credit to Iron Mountain, with favorable opinions
dated the Closing Date of Woods, Oviatt, 


                                       30

<PAGE>


Gilman, Sturman & Clarke LLP, counsel for Safesite, as to certain corporate
matters; (d) no legal action or other claim shall be pending or threatened at
any time prior to or on the Closing Date before or by any authority or by any
other person seeking to restrain or prohibit, or damages or other relief in
connection with, the execution and delivery of the Merger Agreement or the
consummation of the Merger and the transactions contemplated thereby or which
might in the reasonable judgment of Iron Mountain have any adverse effect on
Safesite or, assuming consummation of the Merger, Iron Mountain and its
subsidiaries taken as a whole; (e) each affiliate of Safesite shall have
executed and delivered an affiliate agreement in an agreed upon form and Iron
Mountain and the Safesite Principal Stockholders shall have entered into the
Registration Rights Agreement; (f) Safesite shall have obtained consents to the
assignment and continuation of all material agreements which, in the reasonable
judgment of Iron Mountain require such consents; (g) as of the Closing Date,
there shall not have occurred and be continuing any adverse change affecting
Safesite from the condition thereof (financial and other) reflected in its most
recent financial statements; (h) each of the officers and Directors of Safesite
and each trustee under each benefit plan shall have submitted his or her
unqualified written resignation, dated as of the Closing Date, from all such
positions held with Safesite and as a trustee for each such plan; (i) Iron
Mountain shall have received a favorable opinion, dated the Closing Date, of
Sullivan & Worcester LLP, its special tax counsel, to the effect that the Merger
Agreement constitutes a tax-free plan or reorganization in accordance with the
provisions of Section 368(a) of the Code and as to the consequences thereof to
Iron Mountain; and (j) Iron Mountain, Safesite, Golisano, as agent for the
Safesite stockholders, and the Escrow Agent shall have delivered the Escrow
Agreement, and the Escrow Indemnity Funds described therein shall have been
delivered to the Escrow Agent.

     Conditions to Obligations of Safesite. The obligations of Safesite to
effect the Merger shall be subject to the satisfaction at or prior to the
Effective Time of the following additional conditions: (a) Iron Mountain shall
have furnished Safesite, Golisano and Wayman with the favorable opinion, dated
the Closing Date, of Sullivan & Worcester LLP, counsel to Iron Mountain, as to
certain corporate matters; (b) all agreements, certificates, opinions and other
documents shall be reasonably satisfactory in form, scope and substance to
Safesite and its counsel; (c) there shall be no material breach of any
representations, warranties, covenants and agreements of each of Iron Mountain
and Sub contained in the Merger Agreement or otherwise made in writing by it or
on its behalf pursuant thereto, each and all of the agreements and conditions to
be performed or satisfied by each of Iron Mountain and Sub thereunder at or
prior to the Closing Date shall have been duly performed or satisfied in all
material respects, and each of Iron Mountain and Sub shall have furnished
Safesite with such certificates and other documents evidencing the truth of such
representations, warranties, covenants and agreements and the performance of
such agreements or conditions as Safesite shall have requested; (d) Safesite
shall have received a favorable opinion, dated the Closing Date, of Woods,
Oviatt, Gilman, Sturman & Clarke LLP, its special tax counsel, to the effect
that the Merger Agreement constitutes a tax-free plan of reorganization in
accordance with the provisions of Section 368(a) of the Code and as to the
consequences thereof to Safesite's stockholders; (e) affiliates of Safesite who
are guarantors of any Safesite bank indebtedness, leases or other obligations
shall have been released from all liability under certain guarantees and all
collateral granted to them to secure those guarantees shall have been released
and returned to them; and (f) the Escrow Agreement shall have been executed and
delivered by Iron Mountain and the Escrow Agent and the Registration Rights
Agreement shall have been executed and delivered by Iron Mountain and any other
parties thereto.


Termination

     Termination Events. The Merger Agreement may be terminated at any time
prior to the Effective Time: (a) by mutual consent of Iron Mountain and
Safesite; (b) by either Safesite or Iron Mountain if any permanent injunction,
decree or judgment by any authority preventing the consummation of the Merger
shall have become final and nonappealable; or (c) by Safesite in the event (i)
Safesite is not in breach of the Merger Agreement and none of its
representations and warranties shall have become and continue to be untrue in
any material respect, unless such breach or untruth is capable of being cured by
and will not prevent or delay consummation of the Merger by or beyond the
Termination Date (as defined below) and (ii) either (A) Iron Mountain or Sub is
in breach of the Merger Agreement or any of its representations or warranties
shall have become and continue to be untrue in any 


                                       31

<PAGE>



material respect, unless, in either case such breach or untruth is capable of
being cured by and will not prevent or delay consummation of the Merger by or
beyond the Termination Date, or (B) the Merger and the transactions contemplated
thereby have not been consummated by the Termination Date. The "Termination
Date" shall mean September 30, 1997 (or, under certain circumstances, December
31, 1997) or such other date as Iron Mountain, Safesite and Sub agree.

     The Merger Agreement may also be terminated by Iron Mountain: (a) if the
Merger and the transactions contemplated thereby fail to receive the approval
required by law of Safesite's stockholders; (b) in the event (i) neither Iron
Mountain nor Sub is in breach of the Merger Agreement and none of their
representations or warranties shall have become and continue to be untrue in any
material respect, unless such breach or untruth is capable of being cured by and
will not prevent or delay consummation of the Merger by or beyond the
Termination Date, and (ii) either (A) Safesite is in breach of the Merger
Agreement or any of its representations or warranties shall have become and
continue to be untrue in any material respect, unless, in either case, such
breach or untruth is capable of being cured by and will not prevent or delay
consummation of the Merger by or beyond the Termination Date, (B) the Merger and
the transactions contemplated thereby have not been consummated prior to the
Termination Date or (C) any of Safesite's stockholders is in breach of the
Stockholders' Agreement or any of their representations or warranties shall have
become and continue to be untrue in any material respect, unless, in either
case, such breach or untruth is capable of being cured by and will not prevent
or delay consummation of the Merger by or beyond the Termination Date; (c) if
the Safesite Board shall (i) withdraw, modify or change its recommendation so
that it is not in favor of the Merger Agreement, the Merger or the transactions
contemplated thereby, or shall have resolved to do any of the foregoing, or (ii)
have recommended or resolved to recommend to Safesite's stockholders any Other
Transaction; or (d) Safesite shall have entered into or agreed to enter into any
Other Transaction.

     Effect of Termination. With certain exceptions, in the event of the
termination of the Merger Agreement, the Merger Agreement will become void,
there will be no liability on the part of any party thereto, or any of their
respective officers or Directors, to the other and all rights and obligations of
any party thereto will cease; provided, however, that such termination will not
relieve any party thereto from liability for the breach of any of its
representations, warranties, covenants or agreements set forth in the Merger
Agreement, or impair the right of Safesite, on the one hand, and Iron Mountain
and Sub, on the other hand, to compel specific performance of the other party of
its or their obligations under the Merger Agreement.


Fees and Expenses

     All costs and expenses incurred in connection with the Merger Agreement,
the Merger and the transactions contemplated thereby, and compliance with
applicable law and contractual obligations as a consequence thereof, including,
without limitation, fees and disbursements of counsel, financial advisors and
accountants, incurred by the parties thereto will be borne solely and entirely
by the party which has incurred such costs and expenses (with respect to such
party, its "Expenses").

     Safesite has agreed that if the Merger Agreement is terminated by Iron
Mountain under the circumstances described in the second paragraph under
"--Termination--Termination Events" (other than a termination by Iron Mountain
pursuant to the circumstances described in clause (b)(ii)(B) of the second
paragraph under "--Termination--Termination Events," unless the reason for the
failure to consummate the Merger prior to the Termination Date is due to any
breach by Safesite of its covenants under the Merger Agreement or the failure of
the representations and warranties of Safesite to be true and correct in all
material respects), then Safesite will pay to Iron Mountain an amount equal to
$5,000,000, which amount is in recognition of, among other things, the
out-of-pocket Expenses of Iron Mountain related to the Merger Agreement, the
reliance of Iron Mountain on Safesite's fulfillment of its obligations
thereunder, the costs in delayed opportunity to Iron Mountain, and the benefit
to Safesite, which had been a private closely-held business, in establishing a
market price for it, but which amount will not be considered to constitute
liquidated damages.


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<PAGE>

   Iron Mountain has agreed that if the Merger Agreement is terminated by
Safesite under the circumstances described in clause (c) of the first paragraph
under "--Termination--Termination Events" (other than a termination by Safesite
pursuant to clause (c)(ii)(B) of the first paragraph under
"--Termination--Termination Events" unless the reason for the failure to
consummate the Merger prior to the Termination Date is due to any breach by Iron
Mountain or Sub of any of their respective covenants under the Merger Agreement
or the failure of the representations and warranties of Iron Mountain and Sub to
be true and correct in all material respects), then Iron Mountain will pay to
Safesite an amount equal to $5,000,000, which amount is in recognition of, among
other things, the out-of-pocket Expenses of Safesite related to the Merger
Agreement, the reliance of Safesite on Iron Mountain's fulfillment of its
obligations thereunder, and the costs in delayed opportunity to Safesite, but
which amount will not be considered to constitute liquidated damages.


Amendment; Waiver

     The Merger Agreement may be amended by the parties thereto by action taken
by or on behalf of the respective Boards of Directors thereof at any time prior
to the Effective Time. After approval of the Merger Agreement and the Merger by
Safesite's stockholders, no amendment, which under applicable law may not be
made without the approval of Safesite's stockholders, may be made without such
approval. The Merger Agreement may not be amended except by an instrument in
writing signed by the parties thereto.

     At any time prior to the Effective Time, except to the extent applicable
law does not permit, either Iron Mountain and Sub or Safesite may extend the
time for the performance of any of the obligations or other acts of the other,
subject, however, to completion by the Termination Date waive any inaccuracies
in the representations and warranties of the other contained in the Merger
Agreement or in any document delivered pursuant thereto and waive compliance by
the other with any of the agreements, covenants or conditions contained therein.
Any such extension or waiver will be valid only if set forth in an agreement in
writing signed by the party or parties to be bound thereby.


                              ANCILLARY AGREEMENTS


Stockholders' Agreement

     Concurrently with the execution and delivery of the Merger Agreement, Iron
Mountain and certain stockholders of Safesite entered into the Stockholders'
Agreement. Certain other Safesite stockholders became and other Safesite
stockholders may become parties to the Stockholders' Agreement subsequent to
such time (collectively, the "Agreeing Stockholders"). Set forth below is a
summary of certain provisions of the Stockholders' Agreement, a copy of which is
attached hereto as Annex III. This summary is qualified in its entirety by
reference to the full and complete text of the Stockholders' Agreement.

     Each Agreeing Stockholder has agreed not to sell, transfer, pledge,
hypothecate, encumber or otherwise dispose of, or enter into any contract,
option or arrangement or understanding with respect to the sale, transfer,
pledge, hypothecation, encumbrance or other disposition of any of the shares of
Safesite Common Stock owned by him or her (other than to certain permitted
assignees) prior to the Closing Date. In addition, each Agreeing Stockholder has
agreed that he or she will not, and will not permit any of his or her
representatives, to initiate, solicit or facilitate, directly or indirectly, any
inquiries or the making of any proposal with respect to an Other Transaction,
engage in any discussions or negotiations concerning, or provide to any other
person any information or data relating to, Safesite for the purposes of, or
otherwise cooperate in any way with or assist or participate in, or facilitate
any inquiries or the making of any proposal which constitutes, or may reasonably
be expected to lead to, a proposal to seek or effect an Other Transaction,
unless required to do so by applicable law in his role as a member of the
Safesite Board.

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<PAGE>


     Each of Golisano and Wayman has agreed to vote all of the shares of
Safesite Common Stock then owned by him or which he has the right to vote, equal
to 66.1% of the outstanding Safesite Common Stock (and has granted to Iron
Mountain their proxies to vote all such shares), (i) in favor of the adoption of
the Merger Agreement and each of the transactions contemplated thereby and any
action required in furtherance thereof, (ii) against any action or agreement
that would result in a breach in any material respect of any covenant,
representation or warranty or any other obligation of Safesite under the Merger
Agreement, and (iii) against any Other Transaction or any other action or
agreement that, directly or indirectly, is inconsistent with or that would, or
is reasonably likely to, directly or indirectly, impede, interfere with or
attempt to discourage the Merger or any other transaction contemplated by the
Merger Agreement, including, but not limited to (1) any extraordinary corporate
transaction (other than the Merger on the terms set forth in the Merger
Agreement), such as a merger, consolidation, business combination,
reorganization, recapitalization or liquidation involving Safesite, (2) a sale
or transfer of a material amount of assets of Safesite, or (3) any material
change in Safesite's corporate structure or business.

     Each of Golisano and Wayman has also agreed, among other things, that he
will not grant any proxies, deposit any shares of Safesite Common Stock into a
voting trust or enter into any voting agreement with respect to his shares of
Safesite Common Stock, other than in accordance with the provisions of the
Stockholders' Agreement. Each of Golisano and Wayman has agreed that each will
assist and cooperate with the parties to the Merger Agreement in doing all
things necessary, proper or advisable to consummate the Merger and the
transactions contemplated thereby, and that each will waive his rights to
appraisal under the DGCL and will not influence other Safesite stockholders to
exercise their appraisal rights. Iron Mountain, Golisano and Wayman have agreed
to enter into or cause certain parties to enter into purchase and sale
agreements with respect to three properties owned by Safesite affiliates, and to
enter into the Registration Rights Agreement. Golisano has also agreed to
certain "standstill" and transfer restrictions with respect to Iron Mountain's
equity securities.

     Each of Golisano and Wayman has agreed that he will not, for a period of
five years from the Closing Date, disclose confidential information related to
Safesite or Iron Mountain and its subsidiaries, and will not, for a period of
five years from the Closing Date, engage in the records management business in
the jurisdictions where Iron Mountain and Safesite operate.

     Pursuant to the terms of the Stockholders' Agreement, if Iron Mountain
terminates the Merger Agreement under the circumstances described in the second
paragraph under "--Termination--Termination Events" (other than a termination by
Iron Mountain pursuant to the circumstances described in clause (b)(ii)(B) of
the second paragraph under "--Termination--Termination Events," unless the
reason for the failure to consummate the Merger prior to the Termination Date is
due to any breach by Safesite of its covenants under the Merger Agreement or the
failure of the representations and warranties of Safesite to be true and correct
in all material respects), it has the right within the six months following such
termination, with notice to Golisano within the thirty days following such
termination, to commence an offer to purchase all of the outstanding shares of
Safesite Common Stock at a per share purchase price equal to the Exchange Merger
Consideration that would have been paid in the Merger. Each of Golisano and
Wayman have agreed that they will irrevocably tender their shares of Safesite
Common Stock in the event of any such offer, free and clear of all liens.
Pursuant to the terms of the Merger Agreement, all of the representations,
warranties and covenants of Safesite contained therein will continue to be in
full force and effect for so long as Iron Mountain has the right to commence
such an offer. In addition, in the event of such an offer, the indemnification
provisions of the Merger Agreement will be applicable to such offer.

     The Stockholders' Agreement will terminate upon the earliest to occur of
(i) the mutual consent of Iron Mountain and the Agreeing Stockholders, (ii) one
year after the termination of the Merger Agreement prior to the consummation of
the Merger and (iii) the tenth anniversary of the Closing Date.


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<PAGE>


Escrow Agreement

     Upon consummation of the Merger, Iron Mountain, Safesite, Golisano, as
agent for Safesite's stockholders and holders of Exercisable Options (the
"Agent"), and the Escrow Agent, will enter into the Escrow Agreement. Set forth
below is a summary of certain provisions of the Escrow Agreement, the form of
which is attached hereto as Annex IV. This summary is qualified in its entirety
by reference to the full and complete text of the Escrow Agreement.

     Pursuant to the terms of the Escrow Agreement, upon consummation of the
Merger, Iron Mountain will deliver to the Escrow Agent the aggregate sum of
$3,000,000 in immediately available funds (the "Escrow Indemnity Funds"). The
purpose of the Escrow Indemnity Funds is to indemnify Iron Mountain under the
Merger Agreement. The Escrow Indemnity Funds shall be disbursed to Iron Mountain
from time to time or to Safesite's stockholders after a period of one year
following the Closing Date, only in accordance with the terms of the Escrow
Agreement. The Escrow Indemnity Funds will be subtracted on a ratable basis from
the cash consideration to be received by the Safesite stockholders (other than
holders of Dissenting Shares) and the holders of Exercisable Options promptly
following the consummation of the Merger and shall be invested by the Escrow
Agent in one of a number of designated financial alternatives.

     Upon written instructions to the Escrow Agent and notice to the Agent from
Iron Mountain, the Escrow Agent will make payments out of the Escrow Indemnity
Funds to Iron Mountain, in accordance with such instructions, unless the Agent
objects to such payment. If at any time when Iron Mountain gives instructions to
the Escrow Agent and notice to the Agent of a claim, the Escrow Agent receives a
notice from the Agent that a dispute exists relating to Iron Mountain's right to
that portion of the Escrow Indemnity Funds claimed in Iron Mountain's
instructions and notice, the Escrow Agent will retain custody of that portion of
the Escrow Indemnity Funds which relates to the unresolved claim until the first
to occur of the following events: (i) receipt by the Escrow Agent of a notice
signed by Iron Mountain and the Agent that the dispute has been resolved; or
(ii) receipt by Escrow Agent of a final order of a court of competent
jurisdiction resolving the dispute and directing the disposition of that portion
of the Escrow Indemnity Funds, after which the Escrow Agent shall promptly pay
that portion of the Escrow Indemnity Funds which relates to such unresolved
claim in accordance with such notice or order.

     On the date which is ten days after the expiration of one year from the
date of the closing of the Merger Agreement (the "Escrow Indemnity Period"), the
Escrow Agent will mail a check (or wire) to each Safesite stockholder the
respective amounts instructed by Iron Mountain, which will be each such
stockholder's ratable portion of the Escrow Indemnity Funds less all portions
paid to Iron Mountain during the Escrow Indemnity Period or to be paid to Iron
Mountain to cover certain reimbursements to Iron Mountain and less any amounts
which are the subject of unresolved claims. Upon the resolution of all such
unresolved claims and the payment of all such fees, expenses and costs out of
the Escrow Indemnity Funds, the balance of the Escrow Indemnity Funds and income
on such funds, if any, will be distributed to the persons entitled thereto.

     The Escrow Agent will receive a fee from Iron Mountain for its services and
will be held harmless and be indemnified in connection with any and all third
party claims, losses, judgments or costs, regardless of their nature, arising
out of or because of the Escrow Agreement, except such as may arise because of
the Escrow Agent's negligence or willful misconduct or breach of the Escrow
Agreement. To the extent that Iron Mountain owes any indemnification or other
obligation to the Escrow Agent (including, without limitation, the Escrow
Agent's fee), Iron Mountain will be reimbursed for one half of such
indemnification or obligation out of the interest and income on the Escrow
Indemnity Funds, and out of any Escrow Indemnity Funds remaining at the
expiration of the Escrow Indemnity Period.

     The Escrow Agreement will terminate upon the earliest to occur of (a)
disbursement or release of the Escrow Indemnity Funds by the Escrow Agent as
provided in the Escrow Agreement, or (b) the written mutual consent signed by
each of the parties thereto.

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<PAGE>


Registration Rights Agreement; Restrictions on Transfer under the Federal
Securities Laws

     Pursuant to the Merger Agreement, on or prior to the Closing Date, Iron
Mountain has agreed to enter into the Registration Rights Agreement with each of
the Safesite Principal Stockholders, pursuant to which, subject to certain
limitations, such stockholders will be entitled to two "demand" registration
rights requesting the registration of Iron Mountain Common Stock having a market
price of an aggregate of at least $10,000,000 and unlimited "piggy back"
registration rights to register any amount of Iron Mountain Common Stock
received by such stockholders from Iron Mountain in connection with the Merger.

     All shares of Iron Mountain Common Stock received by Safesite stockholders
in the Merger will be freely transferable (other than the Subject Shares as
described under "The Merger Agreement--Conversion of Safesite Common
Stock--Restrictions on Transfer of Iron Mountain Common Stock"), except that
shares of Iron Mountain Common Stock received by persons who are deemed to be
"affiliates" (as such term is defined under the Securities Act) of Safesite
prior to the Merger may be resold by them only in transactions permitted by the
resale provisions of Rule 145 promulgated under the Securities Act (or Rule 144
in the case of such persons who become affiliates of Iron Mountain) or as
otherwise permitted under the Securities Act. Persons who may be deemed to be
affiliates of Safesite are generally defined as individuals or entities that
control, are controlled by, or are under common control with, Safesite and
include certain executive officers and Directors, as well as principal
stockholders, of Safesite. Rule 145 currently provides, among other things, that
a person subject to it cannot sell in any rolling three-month period more than
the greater of the average weekly trading volume of Iron Mountain Common Stock
over a four week period or 1% of the outstanding Iron Mountain Common Stock for
a period of one year following the Merger. Golisano and Wayman are the only
affiliates of Safesite receiving enough shares of Iron Mountain Common Stock in
the Merger to exceed these volume limitations. For this reason Iron Mountain
agreed to give them registration rights.


Real Property Purchase Agreements

     It is a condition to closing the Merger that Iron Mountain or its nominee
acquire a parcel of real property in Rochester, New York from one of the
Safesite Principal Stockholders for a purchase price of $2,700,000 and acquire
two parcels of real property in Billerica, Massachusetts from affiliates of the
Safesite Principal Stockholders for an aggregate purchase price of $4,600,000.
Each such property is currently leased to Safesite and is used in Safesite's
business.

     In this regard, on March 12, 1997, Iron Mountain Records Management, Inc.,
a wholly owned subsidiary of Iron Mountain ("IMRM"), entered into a Purchase
Agreement and Escrow Instructions (each a "Purchase Agreement") to purchase each
property "as-is, where-is, with all faults" from Golisano, in the case of the
Rochester property, and from Golisano and Wayman, in their capacities as
trustees of the trusts owning such properties, with respect to each of the
Billerica properties. In accordance with the terms of each Purchase Agreement,
IMRM intends to assign its rights and obligations under each Purchase Agreement
and is in advanced negotiations with unaffiliated third parties regarding the
purchase of such properties.

     Each Purchase Agreement requires the seller to deliver to the buyer all
surveys related to the particular property, and the buyer will have 30 days to
object to such surveys. The seller may cure any such objections or, if the
seller elects not to so cure, either the seller or buyer may terminate the
Purchase Agreement. Each Purchase Agreement is required to close on or before
the Closing Date of the Merger. The closing of each Purchase Agreement is
conditioned upon certain deliveries by the seller of such property, including
the deed, certain title documents, a closing statement, a FIRPTA certificate,
mortgage releases (on the Billerica properties) and evidence of the seller's
good standing, authority and existence, and certain deliveries by the buyer,
including the purchase funds, evidence of the buyer's good standing, authority
and existence, a closing statement and an assumption of assigned obligations. 


                                       36

<PAGE>



All such deliveries will be made to an escrow agent who will deliver such
documents at the closings to the appropriate parties and record the appropriate
deed.

     Each Purchase Agreement contains representations and warranties by the
seller as to environmental compliance, the status and authority of the seller,
the lack of options with respect to the purchase of the property, the lack of
default by Safesite under its existing lease of the property and the lack of
litigation and condemnation proceedings with respect to such property. In
addition, each closing is subject to certain conditions precedent, including the
closing of the Merger Agreement, the performance by the seller of the
undertakings and the accuracy of the seller's representations and warranties in
all material respects contained in the Purchase Agreement, the seller not being
involved in bankruptcy or dissolution proceedings or the like, the lack of any
action, suit or other proceeding threatened against the seller or the property,
the disclosure of good and marketable title in the title insurance commitment,
the lack of any environmental notices with respect to the property and the
delivery of closing certificates as to the lack of default under the Purchase
Agreement and the accuracy of the seller's representations and warranties in all
material respects. Each Purchase Agreement contains certain indemnification
provisions with respect to each buyer and seller, most of which provisions
terminate with the closing of the Purchase Agreement. Each Purchase Agreement
automatically terminates if the Merger Agreement is terminated.


                    CERTAIN FEDERAL INCOME TAX CONSIDERATIONS


     The following discussion is a general summary of the material United States
federal income tax consequences of the Merger. This discussion is based upon the
Code, regulations proposed or promulgated thereunder, judicial precedent
relating thereto, and current rulings and administrative practice of the
Internal Revenue Service (the "Service"), in each case as in effect as of the
date hereof, all of which are subject to change at any time, possibly with
retroactive effect.

     HOLDERS OF SAFESITE COMMON STOCK SHOULD CONSULT THEIR TAX ADVISORS AS TO
THE PARTICULAR TAX CONSEQUENCES TO THEM OF THE MERGER, INCLUDING THE
APPLICABILITY AND EFFECT OF ANY FEDERAL, STATE, LOCAL AND FOREIGN INCOME AND
OTHER TAX LAWS.

     The Merger is intended to qualify as a reorganization under Section 368(a)
of the Code. It is a condition to the obligations of Iron Mountain and Safesite
to consummate the Merger that they shall have received opinions of counsel to
the effect that the Merger will be treated as a reorganization within the
meaning of Section 368(a) of the Code. In rendering such opinions, counsel may
rely upon certain representations made by Iron Mountain, Safesite, and certain
stockholders of Safesite. The following discussion assumes that the Merger will
be treated as such a reorganization.

     No gain or loss will be recognized for federal income tax purposes by Iron
Mountain, Safesite or Sub as a consequence of the Merger.

     A holder of Safesite Common Stock who receives a combination of Iron
Mountain Common Stock and cash in exchange for Safesite Common Stock pursuant to
the Merger will realize economic gain or loss equal to the difference between
(i) the sum of the cash and the fair market value of the Iron Mountain Common
Stock received and (ii) the aggregate tax basis in Safesite Common Stock
surrendered therefor. However, any such gain will only be recognized to the
extent of the cash received. Such recognized gain will generally be treated as
long term capital gain if (1) the Safesite Common Stock surrendered in the
Merger has been held as a capital asset for more than one year at the Effective
Time and (2) the cash received does not have the effect of a distribution of a
dividend (which is taxable as ordinary income). Any such loss will not be
recognized.

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<PAGE>



     The tax basis of the Iron Mountain Common Stock received by a holder of
Safesite Common Stock will be the same as the aggregate tax basis of the
Safesite Common Stock surrendered therefor, decreased by the cash received
(including cash received in lieu of a fractional share) and increased by any
gain recognized (whether capital gain or dividend income). The holding period of
the Iron Mountain Common Stock will include the holding period of the Safesite
Common Stock surrendered therefor, if the Safesite Common Stock was held as a
capital asset.

     For purposes of determining whether the cash received has the effect of a
distribution of a dividend, a holder of Safesite Common Stock should be treated
as if he first exchanged all of his Safesite Common Stock solely for Iron
Mountain Common Stock, and then Iron Mountain immediately redeemed a portion of
the Iron Mountain Common Stock in exchange for the cash the holder actually
received. Under this analysis, in general, if the receipt of cash in this deemed
redemption results in a "substantially disproportionate" reduction in the
holder's voting stock interest in Iron Mountain or is "not essentially
equivalent to a dividend," the receipt of the cash will have not have the effect
of the distribution of a dividend. For purposes of this determination, the
holder's deemed voting interest in Iron Mountain before the hypothetical
redemption is compared to the holder's interest after the redemption, taking
into account in each case any Iron Mountain Common Stock constructively owned by
the holder under the applicable attribution rules of the Code. Generally, if the
holder's share of the voting power of Iron Mountain has declined, as a result of
the deemed redemption, by more than 20%, then the receipt of cash will not be
taxed as a dividend. If such interest in the voting power of Iron Mountain has
declined by 20% or less, then generally, in the case of a minority shareholder
who is not an officer or Director of Iron Mountain and who exercises no control
over Iron Mountain's corporate affairs, the receipt of cash likely would not be
taxed as a dividend. Each holder of Safesite Common Stock should consult with
his own tax advisors as to whether the receipt of cash has the effect of a
distribution of a dividend, and if so, the consequences thereof.

     Cash received by a holder of Safesite Common Stock in lieu of a fractional
share interest in Iron Mountain Common Stock will be treated as received in
exchange for such fractional share interest, and gain or loss will be recognized
for federal income tax purposes, measured by the difference between the amount
of cash received and the portion of the basis of the Safesite Common Stock
allocable to such fractional share interest. Such gain or loss would be capital
gain or loss and will be long-term if such share of Safesite Common Stock had
been held for more than one year at the Effective Time.

     Under the Code, a holder of Safesite Common Stock may be subject, under
certain circumstances, to back-up withholding at a 31% rate with respect to the
amount of cash received pursuant to the Merger unless such holder provides proof
of an applicable exemption or a correct taxpayer identification number, and
otherwise complies with applicable requirements of the back-up withholding
rules. Amounts withheld under the back-up withholding rules are not an
additional tax and may be refunded or credited against the holder's federal
income tax liability, provided that the required information is furnished to the
Service.


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<PAGE>
 
                          DESCRIPTION OF IRON MOUNTAIN


Introduction

     Iron Mountain is America's largest records management company, as measured
by its revenues in the United States. Iron Mountain is a full-service provider
of records management and related services, enabling customers to outsource data
and records management functions. As of December 31, 1996, Iron Mountain managed
approximately 30.6 million Cartons in 109 records centers in 33 markets
nationwide. Iron Mountain has a diversified base of over 23,000 customer
accounts, which includes more than half of the Fortune 500 and numerous legal,
banking, healthcare, accounting, insurance, entertainment and government
organizations. Iron Mountain provides storage and related services for all major
media, including paper (which is the dominant form of records retention and
which has accounted for approximately 85% of Iron Mountain's revenues since
1992), computer disks and tapes, microfilm and microfiche, master audio and
video tapes, film and optical disks, X-rays and blueprints. Iron Mountain's
principal services include filing, retrieval and destruction of records, courier
pick-up and delivery, database management and customized reporting. Iron
Mountain also sells storage materials and provides consulting and other
records-related services.

     Iron Mountain's operations date to 1951, when a corporate predecessor
commenced storage operations. The current Iron Mountain was incorporated in
Delaware in 1990.


The Records Management Industry

Overview

     Based on publicly available information, organizations in the United States
generate an estimated four trillion documents each year. Many of these documents
must be retained and available for reference for many years. These records may
be generally divided into two categories: active and inactive. Active records
relate to ongoing and recently completed activities or contain information that
is frequently referenced. Active records are usually stored and managed on-site
by the organization which originated them to ensure ready availability.

     Inactive records are the principal focus of the records management
industry. Inactive records consist of those records which are not needed for
immediate access but which must be retained for legal reasons or regulatory
compliance or for occasional reference in support of ongoing business
operations. Based on industry studies, Iron Mountain believes that inactive
records make up approximately 80% of all records.

Growth of Market; Outsourcing

     Iron Mountain believes that the volume of inactive records is increasing
for a number of reasons, including: (i) the rapid growth of inexpensive
document-producing technologies such as facsimile, desktop printing and computer
networking; (ii) increased regulatory requirements; (iii) concerns over possible
future litigation and the resulting increases in volume and holding periods of
documentation; (iv) the high cost of reviewing records and deciding whether to
retain or destroy them; and (v) the failure of many entities to adopt or follow
policies on records destruction. Despite the growth of new "paperless"
technologies, such as the Internet and e-mail, management believes that stored
information remains predominantly paper-based and that such technologies have
promoted the creation of hard copies of such electronic information.

      Iron Mountain believes that the records management industry will gain a
growing share of this increased volume as more large organizations make the
strategic decision to outsource their records management as part of a growing
trend to outsource a wide variety of functions that can be performed more
cost-effectively by third parties, though there can be no assurance in this
regard. Records management companies can offer occupancy and labor cost
reductions while at the same time providing greater levels of service than are
typically available in-house.

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<PAGE>


Highly Fragmented Industry

     Most records management companies serve a single local market, and are
often either owner-operated or ancillary to another business, such as a moving
company. According to PRISM International, a trade group with approximately 525
members (formerly known as the Association of Commercial Records Centers), as of
January 1994 (the latest date for which such information is available),
approximately 2,600 firms offered records storage and management services in the
United States. Iron Mountain believes that there are only a few national
providers in the industry (including Iron Mountain and Safesite) and that the
rest are regional or, in most instances, single-city operators.

Increasing Industry Consolidation

     Iron Mountain believes that there is a trend towards consolidation in the
records management industry and that it will continue because of the industry's
capital requirements for growth, customer demands for more sophisticated
technology solutions, a trend for certain large customers to contract with one
vendor in multiple cities and opportunities to achieve economies of scale.

     The records management business requires significant up-front capital
investment for real estate, racking systems and management information
technology. Economies of scale available in these areas can reward larger
initial capital investments by reducing per unit storage costs. However, such
economies of scale are only realized once a facility begins storage operations
and fills available capacity. Thus, larger companies with both access to capital
and the ability to quickly fill a new facility enjoy a competitive cost
advantage, thereby putting pressures on smaller competitors.


Financial Characteristics of Iron Mountain's Business

     Iron Mountain's records management business has the following financial
characteristics:

     o    Recurring Revenues. Iron Mountain derives a majority of its revenues
          from fixed periodic (usually monthly) fees charged to customers for
          storage of records. Storage revenues have grown for 32 consecutive
          quarters and have represented approximately 60% of Iron Mountain's
          total revenues in each of the last five years. Once a customer places
          a record in storage with Iron Mountain and until that record is
          destroyed or permanently removed (for which Iron Mountain typically
          receives a service fee), Iron Mountain receives recurring payments of
          fixed periodic fees without incurring additional labor or marketing
          expenses or significant capital costs. The stable and growing storage
          base also provides the foundation for increases in revenues and EBITDA
          from service activities and sales of storage materials.

     o    Historically Non-Cyclical Business. Iron Mountain has not experienced
          a reduction of its business as a result of past general economic
          downturns, although there can be no assurances that this would be the
          case in the future. Management believes that the outsourcing of
          records management may accelerate during economic downturns as
          companies focus on reducing costs through outsourcing non-core
          operating functions. In addition, management believes that companies
          that have outsourced records management are less likely during
          economic downturns to incur the move-out costs and other expenses
          associated with switching vendors or moving records management
          in-house.

     o    Inherent Growth from Existing Customers. Iron Mountain's customers
          have on average generated additional Cartons at a faster rate than
          stored Cartons have been destroyed or permanently removed. From
          January 1, 1992 through December 31, 1996, net Cartons from existing
          customers grew at an average annual rate of 6.5%. Iron Mountain
          believes the consistent growth of its storage revenues is the result
          of a number of additional factors, including: (i) the trend toward
          increased records retention; (ii) customer satisfaction with Iron
          Mountain's services; and (iii) the costs and inconvenience of moving
          storage operations in-house or to another provider of records
          management services.

                                       40

<PAGE>


     o    Diversified and Stable Customer Base. Iron Mountain has over 23,000
          customer accounts in a variety of industries. Iron Mountain currently
          provides services to more than half of the Fortune 500 and numerous
          legal, banking, healthcare, accounting, insurance, entertainment and
          government organizations. Only one of Iron Mountain's customers
          accounted for more than 3% of revenues in each of the years from 1993
          through 1996. From January 1, 1992 through December 31, 1996, average
          annual permanent removals of Cartons represented only approximately 4%
          of total Cartons stored.

     o    Capital Expenditures Related Primarily to Growth. Iron Mountain's
          business requires limited annual maintenance capital expenditures.
          Maintenance capital expenditures were $1.2 million, $0.9 million and
          $1.1 million in 1994, 1995 and 1996, respectively. From 1992 to 1996,
          over 90% of Iron Mountain's aggregate capital expenditures were
          growth-related investments, primarily in racking systems, new
          buildings and leasehold improvements, equipment for new facilities,
          management information systems and facilities restructuring. These
          growth-related capital expenditures are primarily discretionary and
          create additional capacity for increases in revenues and EBITDA.


Recent and Pending Acquisitions

     As part of its growth strategy, since mid-1994, Iron Mountain has acquired
29 records management businesses, 22 of these acquisitions have been consummated
since January 1, 1996 (the "Recent Acquisitions"), and has entered the Merger
Agreement.

     The total purchase price of the Recent Acquisitions was approximately
$101.0 million (not including contingent payments of up to $4.8 million based
upon the achievement of certain revenue targets during 1997 and 1998), and the
purchase price for Safesite is approximately $62.0 million. The Recent
Acquisitions represent in the aggregate total annual revenues of approximately
$42.4 million, and Safesite has total annual revenues of approximately $19.0
million (calculated in each case by reference to the revenues of each such
acquired business during the year ended December 31, 1996, which calculation
includes an estimate of total revenues for the portion of 1996, if any, during
which any such acquired business was included in Iron Mountain's results of
operations).

     Giving effect to the Recent Acquisitions consummated after December 31,
1996 and the Merger, as of December 31, 1996, Iron Mountain operated 145 record
centers in 40 markets nationwide, servicing over 30,000 customer accounts.


                                       41

<PAGE>


     The following table presents certain information for each acquisition
completed since mid-1994.

<TABLE>
<CAPTION>

                                                                                  Principal
                                                                                 State(s) of            Completion
Acquisitions                                                                      Operation                Date
- ------------                                                                      ---------                ----
<S>                                                                             <C>                     <C>

1994 Acquisitions
Data protection service business of Media Management Group, Inc...............  Connecticut             June 1994
Data protection service business of Digital Equipment Corporation.............  Massachusetts           July 1994
Storage and Retrieval Concepts, Inc...........................................  Ohio                    October 1994

1995 Acquisitions
National Business Archives, Inc...............................................  Maryland                March 1995
DataFile Services, Inc........................................................  Texas                   October 1995
Brooks Records Center, Inc....................................................  Delaware                December 1995
Data Management Business Records Storage, Inc.................................  Georgia                 December 1995

1996 Acquisitions
Nashville Vault Company, Ltd..................................................  Tennessee               January 1996
Florida Data Bank, Inc........................................................  Florida                 January 1996
DataVault Corporation.........................................................  Massachusetts           February 1996
Data Storage Systems, Inc.....................................................  California              March 1996
Brambles CRC, Inc.............................................................  Ohio and                April 1996
                                                                                Kentucky
Records management business of Output Technologies
  Central Region, Inc.......................................................    Missouri                May 1996
Records management business of The Fortress Corporation.......................  Massachusetts           July 1996
                                                                                and Florida
Data Archive Services, Inc. and Data Archive Services of Miami, Inc...........  Florida                 August 1996
DKA Industries, Inc. (d/b/a/ Systems Record Storage)..........................  Florida                 August 1996
International Record Storage and Retrieval Service, Inc.......................  New Jersey              September 1996
Security Archives Corporation.................................................  California              September 1996
Data Storage Company, Inc. (d/b/a DataSafe)...................................  Tennessee               October 1996
Dial-A-File Storage, Inc......................................................  Florida                 October 1996
Mohawk Business Record Storage, Inc...........................................  Minnesota               November 1996
Magnetic Archives, Inc........................................................  Colorado                November 1996
Deliverex of Broward..........................................................  Florida                 November 1996

1997 Acquisitions
Security Archives II, Inc. and Security Archives of MSP, Inc..................  Minnesota               January 1997
Records management business of Wellington Financial Services, Inc.
  (d/b/a Michigan Data Storage)...............................................  Michigan                February 1997
Data Recovery Services, Inc...................................................  Florida                 February 1997
CBD Security Archives, Inc....................................................  Louisiana and           March 1997
                                                                                Texas
Chicago Data Destruction Corporation (d/b/a Chicago Data Storage
  Systems)....................................................................  Illinois                April 1997
Critical Files Security, Inc..................................................  Florida                 April 1997

</TABLE>

Growth Strategy

     Iron Mountain's growth strategy is to expand aggressively in existing and
new markets through increased business from existing customers, additions of new
customers and acquisitions. Iron Mountain's goal is to be one of the largest
records management companies in each of its markets. In addition, through its
growth strategy, Iron Mountain seeks to attain increasing economies of scale in
order to provide high-quality service at competitive prices.

                                       42

<PAGE>


     The following table sets forth Iron Mountain's approximate growth in
Cartons stored by existing customers, new customers and as a result of
acquisitions for the three years ended December 31, 1994, 1995 and 1996.

                          Cartons Added to Storage (1)
                                  (In millions)
<TABLE>
<CAPTION>

                                                                        Year Ended December 31,
                                                                         1994             1995             1996
                                                                       --------         --------         --------
<S>                                                                     <C>               <C>              <C>

Cartons at Beginning of Period.............................             15.5              17.7             23.3
                                                                        ====              ====             ====
Additions from Existing Customers
  Gross Cartons Added......................................              2.6               2.5              3.3
  Cartons Deleted:
      Destructions.........................................             (0.9)             (1.0)            (1.1)
      Permanent Removals...................................             (0.6)             (0.6)            (0.9)
                                                                        -----             -----            -----
Net Carton Growth from Existing Customers..................              1.1               0.9              1.3
Additions from New Customers...............................              1.0               1.4              1.4
Additions from Acquisitions................................              0.1               3.3              4.6
                                                                         ---               ---              ---
Total Carton Additions.....................................              2.2               5.6              7.3
                                                                         ===               ===              ===
Percentage Increase........................................              14%               32%              31%

</TABLE>

- ------------------
(1) Excludes storage volumes attributable to Iron Mountain's vital records
services and data protection services.

Growth from Existing Customers

     Existing Iron Mountain customers have contributed to storage and services
revenue growth because they have on average generated additional Cartons at a
faster rate than old Cartons are destroyed or permanently removed. In order to
maximize growth opportunities from existing customers, Iron Mountain seeks to
maintain high levels of customer retention by providing premium customer service
through its decentralized customer support staff.

         The local customer support staff, working in conjunction with the
corporate staff, is also responsible for marketing additional services to
existing customers, including records tracking, indexing, customized reporting,
vital records management and records management consulting services.

Additions of New Customers

     Iron Mountain's direct sales force is dedicated solely to establishing new
account relationships and draws on Iron Mountain's national marketing
organization and senior management. New customer sales efforts have resulted in
the addition of more than 900 new customer accounts in each of the years 1993
through 1995 and over 1,200 new customer accounts in 1996.

     Iron Mountain segments its market into large volume accounts (typically
over 10,000 Cartons) and standard accounts. As of December 31, 1996, large
volume accounts represented more than half of the total Cartons stored. The two
segments differ in complexity of service and technology needs, purchasing
behavior and purchasing leverage. Iron Mountain employs different database
marketing techniques, program design features and pricing structures to meet the
needs of each segment. In recent years Iron Mountain's large volume account
segment has grown rapidly, driven by strategic outsourcing initiatives and Iron
Mountain's marketing efforts. In 1994, 1995 and 1996, large volume accounts
represented 70%, 76% and 66% respectively, of the additions of Cartons from new
customers.

Growth through Acquisitions

     Iron Mountain has had a successful record of acquiring and integrating
smaller records management companies. From 1990 through 1994, Iron Mountain
completed five acquisitions. In order to capitalize on industry consolidation,
Iron Mountain in mid-1994 adopted a more active acquisition strategy and
implemented changes in

                                       43

<PAGE>


its management, systems and financial infrastructure, including the consummation
of a public offering of its Common Stock in January 1996 to execute such
strategy. Since June 1994, Iron Mountain has acquired 29 companies and has
entered into the Merger Agreement.

     Iron Mountain currently operates in 36 markets nationwide and intends to
continue to make fold-in acquisitions in existing markets and to make strategic
acquisitions in new geographic markets, with an emphasis on the 50 largest
markets in the United States. Iron Mountain's corporate development staff is
engaged in an ongoing review of acquisition candidates. Management believes that
Iron Mountain is well-positioned to participate in the further consolidation of
the records management industry.

     Iron Mountain seeks to expand its national presence, size and customer base
through new-market acquisitions. Management believes that the high start-up
costs of commencing operations make acquisitions an attractive means of entering
new markets. Iron Mountain seeks to acquire records management companies in
markets where management believes there is the potential for growth. Within such
markets, Iron Mountain uses a variety of criteria to evaluate acquisition
candidates, including the capacity and condition of existing storage facilities,
past and current operating performance and revenues and the experience and depth
of existing management.

     Iron Mountain believes that it can use its expertise and central
administrative organization to leverage the acquisition candidate's local market
presence, promoting the development of underperforming facilities and enhancing
the value of the local assets. Iron Mountain believes that its new-market
acquisition strategy could have a number of benefits, including: (i) continued
growth in revenues and EBITDA and diversification across a greater number of
markets; (ii) introduction of Iron Mountain's efficient storage, labor,
transportation and other operating efficiencies into new markets; (iii) the
increased utilization of efficiencies available through Iron Mountain's central
administrative and management information functions; (iv) increased market
awareness of Iron Mountain's national scope and presence; and (v) increased
overall scale, which should broaden the range of and facilitate Iron Mountain's
capital-raising activities.

     Iron Mountain also intends to continue to make fold-in acquisitions to
augment its operations in existing markets. Iron Mountain's goal in its existing
markets is to exploit economies of scale while maintaining high quality service.
Following a new-market acquisition, Iron Mountain seeks to increase its business
with the acquired customer base and to supplement that growth with new customers
and, potentially, with appropriate fold-in acquisitions so that Iron Mountain
may benefit from economies of scale.


Premium Service Strategy

     Organizations selecting a provider of records management services consider
a number of factors in addition to price. Management believes that Iron Mountain
is a "premium" brand in the marketplace based upon its reputation for
reliability, customer-oriented organization, investment in technology and
national operating presence. Iron Mountain seeks to exploit its strengths in
each of these areas to maintain customer relationships and to attract new
customers.

Reputation for Reliability

     Iron Mountain believes it has a reputation for reliability based on its
more than 45 years of operations, the continuity and depth of its management,
its successful historical growth, the quality and diversity of its customer base
which includes more than half the Fortune 500, its technological capabilities
and its size and financial resources.

Customer-Oriented Organization and Locally Responsive Management

     Iron Mountain has developed a decentralized, local management structure
that brings significant management experience and stability to local markets and
allows Iron Mountain to respond directly, effectively and flexibly to customers.
Broad operating authority is delegated to regional Vice Presidents and local
managers. In pursuing its acquisition strategy, Iron Mountain seeks to
capitalize upon the experience and strengths of existing management.

                                       44

<PAGE>


In addition, all full-time union and non-union employees participate in
incentive-based compensation programs that provide payments based on profits or
attainment of specified objectives for the unit in which they work. Iron
Mountain believes that the experience, stability and commitment of its regional
and local management is integral to its ability to provide superior customer
service and maximize growth potential.

Investment in Technology

     Iron Mountain has invested $16.3 million in technology since 1992 in order
to provide faster and more flexible solutions for its customers and to enhance
the quality and lower the costs of its own operations. Iron Mountain believes
that its technological capabilities, especially its Safekeeper system, are a
significant tool in attracting new customers. Iron Mountain plans to continue to
invest in its proprietary technologies in the future. See "Technology and
Development; Information Systems."

National Operating Presence

     Iron Mountain believes it is one of only a few records management companies
with a national operating presence (including Safesite). Traditionally, the
purchase decision for large multi-site customers has been made at the local
level. Recently, however, Iron Mountain has found that certain large
organizations have sought to obtain operating and economic efficiencies by
outsourcing a significant portion of their records management functions with a
single records management company. Iron Mountain seeks to use its national
operating presence to compete for such large multi-site customer accounts.


Low-Cost Operating Strategy

     Iron Mountain pursues a low-cost operating strategy based primarily on
achieving economies of scale in the areas of storage, labor and transportation,
general and administrative functions and management information systems. Iron
Mountain believes that it is one of the few records management companies with
the size and resources to realize significant economies of scale in these areas.

Storage Costs

     Because occupancy costs are a major component of Iron Mountain's cost of
sales, reducing per Carton storage costs is a primary strategic goal of Iron
Mountain and its real estate management staff. Iron Mountain seeks to minimize
per Carton storage costs by: (i) designing racking systems and operating space
to maximize facility storage efficiency; (ii) negotiating favorable facility
leases and having facilities built to its custom specifications; and (iii)
leasing larger facilities, which, when filled, are less expensive per Carton to
operate. Since 1991, Iron Mountain has acquired or leased 11 custom-designed
records management facilities. The average Carton density (the ratio of standard
Carton storage capacity to total square feet of floor space) of these facilities
is approximately twice that of Iron Mountain's overall average Carton density.

Labor and Transportation Efficiency

     Iron Mountain has made significant investments in computer technologies for
its service operations, resulting in greater efficiencies. In addition, by
increasing its operations and customer base in a local market area, Iron
Mountain seeks to maximize its courier delivery fleet usage and to increase
delivery and routing efficiencies.

     Iron Mountain's incentive structure has also contributed to labor
efficiency. Each of Iron Mountain's full-time employees participates in
incentive compensation programs based upon achievement of specific operating
targets designed to integrate the objectives and performance of records
management facility employees and managers. For the year ended December 31,
1996, Iron Mountain's employees earned incentive compensation in an amount equal
to approximately 12.0% of the base wages paid by Iron Mountain.


                                       45

<PAGE>


General & Administrative and Management Information Systems Efficiencies

     Iron Mountain's corporate staff provides support to local management in the
areas of acquisitions, marketing, facility acquisition and leasing, racking
system purchasing, finance and accounting and human resource management. In
addition, Iron Mountain's corporate staff is responsible for the design and
support of all records management technology. Iron Mountain believes that
central support in these areas provides local managers with competitive
advantages over smaller, local competitors and results in significant economies
of scale.


Technology and Development; Information Systems

     Iron Mountain pioneered the application of advanced information technology
to the records management industry. Iron Mountain's proprietary Safekeeper
system provides advanced inventory control and information access, enabling Iron
Mountain to provide faster, higher quality and more flexible solutions to its
customers and to lower the costs of its operations. Iron Mountain's Safekeeper
system exploits bar-code technology to provide inventory integrity and a
comprehensive, standardized approach to tracking, accessing and retrieving
records. Safekeeper offers state-of-the-art records management capabilities and
ease of access to customers while featuring security functions to protect
customer information from unauthorized access. The system coordinates inventory
control, order entry, billing, material sales, service activity, accounts
receivable and management reporting, and features system-driven quality
assurance and error-prevention. Since 1992, Iron Mountain has invested $16.3
million to develop and refine its management information systems, including
Safekeeper.

     Safekeeper is built on an open systems architecture which is fully portable
and can be implemented in small processing environments with several users and
in large processing environments with hundreds of users. This allows Iron
Mountain a substantial measure of flexibility and vendor independence, and
reduces the risk of technological obsolescence.

     Safekeeper has improved Iron Mountain's customer support and operating
efficiency in the following ways:

     o    Acquisition System Integration. Safekeeper has been designed to easily
          and effectively integrate newly acquired records management companies
          and offer improved levels of customer service and records management
          capabilities to customers acquired through acquisitions. The critical
          components of integrating acquisition systems are the abilities to
          match the acquired company's carton identifiers, location identifiers,
          records descriptive data, and billing data. Safekeeper is designed
          with flexible, comprehensive capabilities in each of these areas.
          Consequently, an acquired company's inventory can be converted to
          Safekeeper without having to relabel cartons or reset and relabel
          inventory locations. The customers of the acquired company retain
          their records data and receive similar billing rate structures. In
          addition, acquisition customers experience minimal disruption during
          integration and, after conversion, gain access to advanced records
          management and information access capabilities. Safekeeper utilizes a
          suite of conversion routines to automate the conversion process and
          effectively translate customer and inventory information.

     o    Storage Efficiency. Safekeeper enables Iron Mountain to maximize the
          efficient use of storage space at its facilities. When cartons are
          added or returned to storage, Safekeeper identifies available space
          and the location of the customer's other records at the facility.
          Because there is a continual flow of cartons into and out of Iron
          Mountain's facilities, Safekeeper also permits facility operators to
          utilize space that becomes available as soon as cartons are removed.
          Safekeeper can pinpoint the location of any carton, enabling facility
          operators to quickly determine the optimal location for new or
          returning cartons.

     o    Inventory Integrity. Bar-coding and scanning are used to track a
          carton or a record throughout its life cycle at Iron Mountain.
          Safekeeper identifies inventory discrepancies during the order
          processing cycle and forces their resolution before they affect the
          customer. This forced discrepancy resolution means that errors must be
          resolved before an order can be closed; until the order is closed,
          billing cannot be processed. Management believes that this
          system-driven quality assurance is a significant advantage over the
          "best efforts" approach used by most of its competitors.


                                       46

<PAGE>

     o    Customer Information Access. Customers can access their records
          management data through a variety of formats, including direct access
          via Safekeeper Online, access on their own PCs via Safekeeper Desktop,
          integration of their internal system with Safekeeper via automated
          file transfers and paper reports. Safekeeper Online enables a customer
          to place orders directly via online access, resulting in efficiencies
          for Iron Mountain order processing. It features robust querying and
          searching tools to enable customers to identify records with only
          partial information. Safekeeper Desktop is a PC application, run from
          customers' desktop or network PCs; it provides customers with an
          entire set of records management data along with user-friendly tools
          for querying, reporting, and editing. Safekeeper's suite of file
          transfers enable customers to automatically transfer records data and
          service requests from their internal system to Safekeeper. The paper
          reports include inventory detail and summary, service activity
          analysis, quality assurance, and management review.

     o    Records Management Flexibility. Safekeeper offers full life-cycle
          records management, from file creation to destruction, enabling each
          customer to establish schedules for records retention and destruction
          as dictated by the customer's specific needs. Safekeeper can flexibly
          accommodate large or small amounts of records management data in
          accordance with customer requirements. A series of customer-specific
          features and options allows Iron Mountain to tailor the records
          management functionality and reporting to the customer's needs.

     o    Security. Safekeeper incorporates strict security protocols and
          procedures for all customers to prevent unauthorized access to a
          client's records information. Advanced security features that can
          automatically restrict access by departmental identification and/or
          type of service request are available to customers that are internally
          set up to provide this information.

     In addition to Safekeeper, Iron Mountain's data protection services
facilities utilize Iron Mountain's Media Link(TM) software, a state-of-the-art
media management system which provides integrated bar-code tracking and
electronic data interface between customer and Iron Mountain facilities, as well
as audit trail and remote inventory query functionality. Iron Mountain plans to
continue to invest in its proprietary technologies in the future in order to
enhance its customer service as well as to increase its own operating
efficiency.

Description of Iron Mountain Records Management Services

     Iron Mountain's records management services consist primarily of the
storage operations for the management of hard copy documents. These and related
services and products sold have, since 1992, accounted for approximately 85% of
Iron Mountain's revenues. The balance of Iron Mountain's revenues come from the
storage and service of vital records and data protection, consulting and other
services.

Storage Operations

     Storage revenues accounted for approximately 60% of revenues in each of
Iron Mountain's last five fiscal years. Storage charges are generally billed
monthly on a per storage unit basis (usually either per unit or per cubic foot
of records) and include the provision of space, racking, computerized inventory
and activity tracking, physical security, environmental and climate control and
fire protection.

     The storage of a carton begins by issuing Safekeeper bar-coded labels to
the customer. The customer packs records in cartons and affixes the bar-coded
label to each carton. Customer personnel and the Iron Mountain driver conduct a
physical count of the cartons and the driver signs for the cartons, which are
then transported to the records management facility. Upon delivery to the
facility, the cartons are subjected to a second physical count. The cartons are
delivered to available space identified by Safekeeper and the bar-coded
information is scanned into the computer together with a bar-coded location
identifier. At the same time, a computer operator enters the customer's data
describing the stored material into the computer and the system confirms that
the cartons sent match the data entered in the computer. Under Iron Mountain's
computer control system, the order can only be closed out when all requisite
steps and checks have been completed and counts and locations have been
reconciled.

                                       47

<PAGE>

Service and Courier Operations

     Principal services include adding cartons to storage, temporary removal of
files or cartons from storage, refiling of removed records, permanent
withdrawals from storage and destruction of records. Service charges are
generally assessed for each procedure on a per unit basis. The Safekeeper system
controls the service processes from order entry through transportation and
invoicing.

     Courier operations consist primarily of the pickup and delivery of records
upon customer request. Courier delivery schedules can be tailored to fit
customers' needs, but generally customer orders received by 4:00 p.m. on a
business day are delivered the following business day. Iron Mountain also
provides same-day and immediate delivery during business hours and emergency
delivery at night and on weekends and holidays. Charges for courier services are
based on urgency of delivery, volume and location and are billed monthly as
incurred. Iron Mountain currently utilizes a fleet of approximately 300 owned or
leased delivery vehicles.

Vital Records Services

     Vital records contain critical or irreplaceable data such as master audio
and video recordings, film, software source code and other highly proprietary
information. Vital records may require special facilities or services, either
because of the data they contain or the media on which they are recorded. Iron
Mountain's charges for providing enhanced security and special
climate-controlled environments for vital records are higher than for typical
storage functions. Iron Mountain provides the same ancillary services for vital
records as it provides for its other storage operations.

Data Protection Services

     Data protection services consist of the storage, backup and archiving of
computer media as part of corporate disaster and business recovery plans.
Computer tapes, cartridges and disk packs are transported off-site by Iron
Mountain's courier operations on a scheduled basis to secure, climate-controlled
facilities, where they are available to customers 24 hours a day, 365 days a
year, to facilitate data recovery in the event of a disaster. This process is
managed by Iron Mountain's Media Link software, a state-of-the-art media
management system which provides integrated bar-code tracking, electronic data
interface between the customer and Iron Mountain's facilities as well as audit
trail and remote inventory query functionality. Iron Mountain also manages tape
library relocation and supports disaster recovery testing and execution.

Additional Services and Products

     Iron Mountain offers a variety of additional services, which customers may
request or contract for on an individual basis. These services include
performing records inventories, packing records into cartons or other
containers, computerized indexing of files and individual documents, developing
schedules for the retention and destruction of records and records management
consulting services. Iron Mountain also sells a full line of specially designed
corrugated cardboard, metal and plastic storage containers.

     Iron Mountain provides professional consulting services to large customers,
enabling them to develop and implement comprehensive records management
programs. Iron Mountain's consulting business draws on Iron Mountain's
experience in records management to analyze the practices of such companies and
assist them in creating more effective programs of records management. Iron
Mountain's consultants work with such customers to develop policies for document
review, analysis and evaluation and for scheduling of document retention and
destruction.

     In addition to its historical focus on the management of inactive records,
Iron Mountain has recently begun to provide services for the management of
active records. Iron Mountain can provide these services, which generally
include document and file processing and storage, both off-site at its own
facilities and by supplying its own personnel to perform management functions
on-site at the customer's premises. Iron Mountain sees active records management
as a potential source of future revenue growth for Iron Mountain, although there
can be no assurance in this regard.

                                       48

<PAGE>


Potential International Investments

     Iron Mountain may consider capitalizing upon its expertise in the records
management industry by making investments in records management businesses
outside the United States. From time to time, Iron Mountain has had discussions
concerning such investments. Such investments, if consummated, would be subject
to risks and uncertainties relating to the indigenous political, social,
regulatory, tax and economic structures of countries in those areas, as well as
fluctuations in currency valuation, exchange controls, expropriation and
governmental policies limiting returns to foreign investors. At this time, there
can be no assurance as to whether any such investment will be made or, if made,
will be successful in achieving its objectives.


Customers

     Iron Mountain's customer base is diversified in terms of revenue and
industry concentration. Iron Mountain currently has over 23,000 customer
accounts. Iron Mountain tracks customer accounts, which are based on invoices.
Accordingly, depending on how invoices have been arranged at the request of a
customer, one organization may represent multiple customer accounts. The chart
below shows, as of June 1994, the relative amounts of revenue attributable to
certain business sectors. 


[Graphic omitted: Graphic contains a pie chart showing the relative amounts of
revenue by percentage attributable to certain business sectors as of June 1994.
Such percentages are as follows:

Other                          19%
Legal Services                 16%
Depository Institutions        14%
Heath Care                     10%
Other Financial Institutions   10%
Professional Services          7%
Government                     6%
Insurance Companies            8%
Manufacturing                  4%
Retail                         4%
Entertainment                  2%]


     Iron Mountain services accounts of all sizes, from small businesses and
professional groups to over half of the Fortune 500. Other than the Resolution
Trust Corporation (the "RTC") or its successor, the Federal Deposit Insurance
Corporation (the "FDIC"), which accounted for 6.3%, 4.8% and 3.5% of Iron
Mountain's revenues for the years ended December 31, 1994, 1995 and 1996,
respectively, no account or related set of accounts generated more than 3% of
Iron Mountain's revenues during any such period.

     Iron Mountain's contract with the FDIC, as successor under the contract to
the RTC, was renewed effective July 27, 1996 for a one-year term, with three
further annual renewal options at the election of the FDIC. Although the
substantial costs of removing its records from Iron Mountain's facilities may
act as a disincentive to the FDIC to select another vendor, there can be no
assurance that the contract will be further renewed or that the terms of such
renewal will be as favorable to Iron Mountain as the terms of the current
contract. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations--Overview."


                                       49

<PAGE>


Marketing and Sales

     Iron Mountain uses database marketing and a dedicated sales force to focus
exclusively on new business development. A corporate marketing organization
provides sales support, training, marketing communications and product
management as support functions. The program has successfully produced over 900
new customer accounts in each of the years 1993 through 1995, and over 1,200 new
customer accounts in 1996. The selling effort is bolstered by regional and
senior managers focused on key account selling.


Properties

     As of December 31, 1996, Iron Mountain conducted operations through 94
leased and 15 owned facilities containing a total of approximately 7.3 million
square feet of space. The leased facilities typically have initial lease terms
of 10 years or longer with options to renew for an additional 10 years. The
weighted average remaining term of the leases on these facilities is
approximately 7.5 years. In addition, many of the leases contain either a
purchase option or a right of first refusal upon the sale of the property. The
leases include one property leased from affiliates of Iron Mountain. See Note 9
of Notes to Iron Mountain's Consolidated Financial Statements.

     As of December 31, 1996, Iron Mountain owned or leased (directly or through
its subsidiaries) the following records management facilities in the geographic
locations indicated below.

                                                     Records
                                                     Management
State                                                Facilities
- -----                                                ----------

Arizona                                                 2
California                                             25
Colorado                                                4
Connecticut                                             2
Delaware                                                1
Florida                                                13
Georgia                                                 8
Illinois                                                3
Kansas                                                  1
Kentucky                                                1
Maryland                                                3
Massachusetts                                           9
Minnesota                                               4
Missouri                                                2
New Hampshire                                           1
New Jersey                                              5
New York                                                5
Ohio                                                    4
Pennsylvania                                            2
Rhode Island                                            1
Tennessee                                               2
Texas                                                   8
Virginia                                                3
                                                     ----
     Total                                            109
                                                     ====

         Iron Mountain or its principal subsidiary is a guarantor of a
substantial portion of the leases to which other subsidiaries are party. See
Note 8 of Notes to Iron Mountain's Consolidated Financial Statements for
information regarding the minimum annual rental commitments of Iron Mountain.


                                       50

<PAGE>


Employees

     A key feature of Iron Mountain's operating strategy is its decentralized
management structure and reliance on local management operating in local
business environments. Iron Mountain's current operations are divided into four
areas, each headed by a senior executive, comprising twelve local management
regions to maximize marketing and operating effectiveness and to minimize
supervisory costs. The management regions, each of which is managed by a Vice
President, are currently further divided into a total of 36 markets, each
managed by a General Manager. The Vice Presidents and General Managers have
broad operating authority. Iron Mountain's headquarters staff performs a variety
of central administrative and support functions in order to maximize the time
and resources that local personnel can devote to customer service and client
development.

     Iron Mountain had approximately 1,456 full-time employees as of December
31, 1996, of whom approximately 90% are employed at the district level, 8% at
the corporate level and the balance at the area and regional levels.

     Approximately 11% of Iron Mountain's employees are represented by various
Teamsters Union locals under four different agreements. Two of these agreements,
representing approximately 150 employees, have expired and are currently under
negotiation. Based on its prior experience with the six union locals involved in
these negotiations, Iron Mountain expects that it will enter into new agreements
on satisfactory terms. The remaining two contracts expire in 1999. In addition,
in two of Iron Mountain's facilities, an election, subject to National Labor
Relations Board regulations, was held on June 20, 1996. A majority of the
approximately 40 employees voted for representation by a Teamsters Union local.
Iron Mountain is currently in negotiations with the union local.

     All non-union employees are eligible to participate in Iron Mountain's
benefit programs, which include medical, dental, life, short and long-term
disability and accidental death and dismemberment plans. Unionized employees
receive these types of benefits through their unions. In addition to base
compensation and other usual benefits, all full-time union and non-union
employees participate in some form of incentive-based compensation program that
provides payments based on profits, collections, or attainment of specified
objectives for the unit in which they work. Management believes that Iron
Mountain has good relationships with its employees and unions.


Competition

     Iron Mountain competes with a few other national companies, one of which is
Safesite, as well as a large number of local and regional concerns. Iron
Mountain believes that competition for customers is based on price, reputation
for reliability, quality of service and scope and scale of technology, and
believes that it generally competes effectively based on these factors.
Management believes that, except for Pierce Leahy Corp., all of these
competitors have records management revenues significantly lower than those of
Iron Mountain. To accommodate growth, a records management vendor must invest in
incremental storage capacity, which requires added warehouses, racking systems,
and related equipment including computer systems capable of tracking
increasingly large inventories. The amount of such investment is significant
relative to the immediate return that can be realized, and the faster a vendor
grows, the more capital is required. As a result, the industry trend toward
consolidation will, in management's opinion, continue. In addition, Iron
Mountain faces competition from the internal document handling capability of its
current and potential customers. There can be no assurance that these
organizations will outsource more of their document management needs or that
they will not bring in-house some or all of the functions they currently
outsource. Iron Mountain also faces competition for acquisition candidates.

     The substantial majority of Iron Mountain's revenues have been derived from
the storage of paper documents and from related services. Such storage requires
significant physical space. Alternative technologies for generating, capturing,
managing, transmitting and storing information have been developed, many of
which require significantly less space than paper. Such technologies include
computer media, microforms, audio/video tape, film, CD-ROM and optical disk.
None of these technologies has replaced paper as the principal means for storing
information. However, there can be no assurance that one or more non-paper-based
technologies (whether now existing or developed in the future) may not in the
future significantly reduce or supplant the use of paper as a preferred medium,
which could in turn adversely affect Iron Mountain's business.

                                       51

<PAGE>


Insurance

     Iron Mountain carries a comprehensive property insurance policy with
insurers that it believes to be reputable and in amounts that it believes to be
appropriate, covering replacement cost of real and personal property, including
improvements. Subject to sub-limits, the policy also covers extraordinary
expenses associated with business interruption and damage or loss from fire,
flood or earthquake, subject to certain deductibles. Separate policies for
California earthquake insurance carry other deductibles that may be significant.
Iron Mountain also maintains general liability and excess liability insurance
covering bodily injury, property damage and personal injury. See "Management's
Discussion and Analysis of Financial Condition and Results of
Operations--Overview" for disclosure concerning recent fires at two of Iron
Mountain's facilities.

     Iron Mountain's standard form of contract sets forth an agreed maximum
value (usually nominal) for each carton or other storage unit held by Iron
Mountain as a limitation on liability for loss or damage, as permitted under the
Uniform Commercial Code. Iron Mountain believes that in typical circumstances
its liability would be limited to the value set forth in such contracts in the
event of loss or damage relating to the value of information stored on media
held by Iron Mountain. However, certain of Iron Mountain's agreements with
certain large volume accounts contain no such limits or contain higher limits or
supplemental insurance arrangements.


Environmental Matters

     Under various Environmental Laws, an owner of real estate or a lessee
conducting operations thereon may become liable for the costs of investigation,
removal or remediation of soil and groundwater contaminated by certain hazardous
substances or wastes or petroleum products. Certain such laws impose cleanup
responsibility and liability without regard to whether the owner or operator of
the real estate or operations thereon knew of or was responsible for the
contamination, and whether or not operations at the property have been
discontinued or title to the property has been transferred. In addition, the
presence of such substances, or the failure to properly remediate such property
may adversely affect the current property owner's or operator's ability to sell
or rent such property or to borrow using such property as collateral. The owner
or operator of contaminated real estate also may be subject to common law claims
by third parties based on damages and costs resulting from off-site migration of
the contamination.

     Certain Environmental Laws govern the removal, encapsulation or disturbance
of ACMs. Such laws may impose liability for the release of ACMs and may enable
third parties to seek recovery from owners or operators of real estate for
personal injury associated with exposure to such substances. Iron Mountain is
aware of the presence of ACMs at some of Iron Mountain's facilities, but
believes that such materials are in acceptable condition at this time. Iron
Mountain believes that future costs related to any remediation of ACMs at these
facilities will not be material, either on an annual basis or in the aggregate,
although there can be no assurance with respect thereto.

     Certain of the properties formerly or currently owned or operated by Iron
Mountain were previously used for industrial or other purposes that involved the
manufacture, use or storage of hazardous substances or petroleum products or the
generation and disposal of hazardous wastes and, in some instances, included the
operation of USTs. In addition, certain of such properties are adjacent to or
near Superfund sites or other contaminated properties. In connection with its
former and current ownership or operation of certain properties, Iron Mountain
may be potentially liable for environmental costs such as those discussed above,
and as more specifically described below.

     At Iron Mountain's Hollywood, California facilities, certain USTs and
contaminated soils have been removed. Some additional contamination of soils and
groundwater remains and may be migrating. In 1990 and 1991, Iron Mountain filed
certain reports documenting its efforts and site conditions with the appropriate
environmental agencies pursuant to various Environmental Laws. Investigations
conducted on behalf of Iron Mountain in connection with its on-site remedial
activities disclosed that regional groundwater contamination, unrelated to Iron
Mountain's property, exists. At this time, Iron Mountain has not received any
notice from any regulatory agency or third party seeking further remediation of
soil or groundwater by Iron Mountain; however, there can be no

                                       52

<PAGE>


assurance that such further action will not be sought in the future. Iron
Mountain has accrued estimated costs of $0.8 million that it believes it may
reasonably be expected to incur in connection with this site if such additional
remediation were to become necessary; however, there can be no assurance as to
the adequacy of such accrual. Iron Mountain believes the ultimate outcome of the
foregoing will not have a material adverse effect on Iron Mountain's financial
condition or results of operations. See Note 8 of Notes to Iron Mountain's
Consolidated Financial Statements.

     Iron Mountain has also from time to time conducted certain environmental
investigations and remedial activities at certain of its other former and
current facilities, but an in-depth environmental review of the properties has
not been conducted by or on behalf of Iron Mountain. Iron Mountain believes that
it is in substantial compliance with all applicable material Environmental Laws.
Iron Mountain has not received any written notice from any governmental
authority or third party asserting, and is not otherwise aware of, any material
noncompliance, liability or claim relating to hazardous substances or wastes,
petroleum products or material Environmental Laws applicable to its operations
in connection with any of its present or former properties other than as
described above. However, no assurance can be given that there are no
environmental conditions for which Iron Mountain might be liable in the future
or that future regulatory action, as well as compliance with future
Environmental Laws, will not require Iron Mountain to incur costs for or at its
properties that could have a material adverse effect on Iron Mountain's
financial condition and results of operations.


Legal Proceedings

     Iron Mountain is involved in litigation from time to time in the ordinary
course of business. In the opinion of management, no material legal proceedings
are pending to which Iron Mountain, or any of its properties, is subject.


                                       53

<PAGE>


Iron Mountain's Selected Financial and Operating Information

     The following tables present selected consolidated financial and operating
information relating to the financial condition and results of operations of
Iron Mountain over the past five years, and should be read in conjunction with
"--Management's Discussion and Analysis of Financial Condition and Results of
Operations" and with Iron Mountain's Consolidated Financial Statements and the
Notes thereto included elsewhere in this Proxy Statement.

<TABLE>
<CAPTION>

                                                                                   Year Ended December 31,
                                                                                  ------------------------
                                                                   1992          1993         1994          1995          1996
                                                                   ----          ----         ----          ----          ----
<S>                                                                <C>           <C>          <C>           <C>           <C>

Consolidated Statements of Operations Data:                        (In thousands, except per share amounts and Carton data)
Revenues:
        Storage..............................................      $44,077       $48,892      $54,098       $64,165       $85,826
        Service and Storage Material Sales...................       26,596        32,781       33,520        40,271        52,892
                                                                  --------       -------      -------       -------      --------
              Total Revenues.................................       70,673        81,673       87,618       104,436       138,718
Operating Expenses:
        Cost of Sales (Excluding Depreciation)...............       35,169        43,054       45,880        52,277        70,747
        Selling, General and Administrative..................       17,630        19,971       20,853        26,035        34,342
        Depreciation and Amortization........................        5,780         6,789        8,690        12,341        16,936
                                                                    ------        ------       ------        ------       -------
              Total Operating Expenses.......................       58,579        69,814       75,423        90,653       122,025
                                                                    ------        ------       ------        ------       -------
Operating Income.............................................       12,094        11,859       12,195        13,783        16,693
Interest Expense.............................................        8,412         8,203        8,954        11,838        14,901
                                                                   -------       -------      -------        ------       -------
Income Before Provision for Income Taxes.....................        3,682         3,656        3,241         1,945         1,792
Provision for Income Taxes...................................        2,095         2,088        1,957         1,697         1,435
                                                                   -------       -------      -------       -------      --------
Income Before Extraordinary Charge...........................        1,587         1,568        1,284           248           357
Extraordinary Charge, Net of Tax Benefit(1)..................           --            --           --            --         2,126
                                                                   -------       -------      -------       -------      --------
Net Income (Loss)............................................        1,587         1,568        1,284           248       (1,769)
Accretion of Redeemable Put Warrant..........................          626           940        1,412         2,107           280
                                                                   -------      --------     --------      --------     ---------
Net Income (Loss) Applicable to
        Common Stockholders..................................         $961          $628        $(128)      $(1,859)      $(2,049)
                                                                   =======       =======      =======      ========      ========
Income (Loss) Before Extraordinary Item per
        Common and Common Equivalent Share...................        $0.12         $0.08       $(0.02)       $(0.24)        $0.01
Net Income (Loss) per Common and
Common Equivalent Share......................................        $0.12         $0.08       $(0.02)       $(0.24)       $(0.20)
Weighted Average Common and Common
Equivalent Shares Outstanding................................        8,052         8,067        7,984         7,784        10,137
Other Data:
EBITDA(2)....................................................      $17,874       $18,648      $20,885       $26,124       $33,629
EBITDA as a Percentage of Total Revenues.....................         25.3%         22.8%        23.8%         25.0%         24.2%


                                       54

<PAGE>

                                                                                   Year Ended December 31,
                                                                                  ------------------------
                                                                   1992          1993         1994          1995          1996
                                                                   ----          ----         ----          ----          ----
<S>                                                                <C>           <C>          <C>           <C>           <C>
Other Data (continued):
Capital Expenditures:
        Growth (3)(4)........................................      $11,226       $13,605      $15,829       $14,395       $23,334
        Maintenance..........................................          818         1,846        1,151           858         1,112
                                                                  --------       -------     --------      --------       -------
Total Capital Expenditures(4)................................      $12,044       $15,451      $16,980       $15,253       $24,446
Additions to Customer Acquisition Costs......................       $1,268          $922       $1,366        $1,379        $1,642
Approximate Cartons in Storage at end of
        Period (in millions) (5).............................         12.6          15.5         17.7          23.3          30.6

                                                                                      As of December 31,
                                                                                      ------------------
                                                                   1992          1993         1994          1995          1996
                                                                   ----          ----         ----          ----          ----
Balance Sheet Data:
Cash and Cash Equivalents....................................         $498          $591       $1,303        $1,585        $3,453
Total Assets.................................................      115,429       125,288      136,859       186,881       281,799
Total Debt...................................................       73,304        78,460       86,258       121,874       184,733
Stockholders' Equity.........................................       23,419        24,047       22,869        21,011        52,384

</TABLE>

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

(1)  The extraordinary charge for 1996 relates to a loss, net of the related tax
     benefit of $1,413, on the retirement of certain indebtedness which was
     repaid with a portion of the net proceeds from the Note Offering.

(2)  Earnings before interest, taxes, depreciation, amortization and
     extraordinary items ("EBITDA"). Based on its experience in the records
     management industry, Iron Mountain believes that EBITDA is an important
     tool for measuring the performance of records management companies
     (including potential acquisition targets) in several areas, such as
     liquidity, operating performance and leverage. In addition, lenders use
     EBITDA as a criterion in evaluating records management companies, and
     substantially all of the Iron Mountain's financing agreements contain
     covenants in which EBITDA is used as a measure of financial performance.
     However, EBITDA should not be considered an alternative to operating or net
     income (as determined in accordance with GAAP) as an indicator of Iron
     Mountain's performance or to cash flow from operations (as determined in
     accordance with GAAP) as a measure of liquidity. See "--Management's
     Discussion and Analysis of Financial Condition and Results of
     Operations--Overview" and "--Liquidity and Capital Resources" for
     discussions of other measures of performance determined in accordance with
     GAAP and the Iron Mountain's sources and applications of cash flow.

(3)  Growth capital expenditures include investments in racking systems, new
     buildings and leasehold improvements, equipment for new facilities,
     management information systems and facilities restructuring. See
     "--Management's Discussion and Analysis of Financial Condition and Results
     of Operations--Liquidity and Capital Resources--Capital Investments."

(4)  Includes $2,901 in 1994 related to the cost of constructing a records 
     management facility which was sold in a sale-leaseback transaction in the 
     fourth quarter of 1994.

(5)  The term "Carton" is defined as a measurement of volume equal to a single
     standard storage carton, approximately 1.2 cubic feet. The number of
     Cartons stored does not include storage volumes in the Iron Mountain's
     vital records services and data protection services which are described
     under "--Description of Iron Mountain's Records Management Business."

                                       55

<PAGE>


Management's Discussion and Analysis of Financial Condition and Results of 
Operations

     The following discussion should be read in conjunction with Iron Mountain's
Selected Consolidated Financial and Operating Information and Iron Mountain's
Consolidated Financial Statements and the Notes thereto and the other financial
and operating information included elsewhere in this filing.

Overview

     The primary financial objective of Iron Mountain is to increase its EBITDA,
which is a source of funds to service indebtedness and for investment in
continued internal growth and growth through acquisitions. Iron Mountain has
benefited from growth in EBITDA, which has increased from $17.9 million for 1992
to $33.6 million for 1996 (a compound annual growth rate of 17.1%), but other
measures of Iron Mountain's financial performance, such as net income and net
income applicable to common stockholders, have been negatively affected by this
objective. In 1994, 1995 and 1996, Iron Mountain experienced net losses
applicable to common stockholders. Such net losses are attributable in part to
significant increases in charges associated with Iron Mountain's pursuit of its
growth strategy, namely, (i) increases in depreciation and amortization expenses
associated with expansion of Iron Mountain's storage capacity and (ii) increases
in goodwill amortization associated with acquisitions accounted for under the
purchase method. In addition, net income applicable to common stockholders has
been negatively affected by a charge for accretion of a redeemable put warrant
and, in 1996, by an extraordinary charge related to the early retirement of
debt. The put warrant was redeemed in February 1996, upon completion of Iron
Mountain's initial public offering (the "Initial Public Offering"). See Note 5
of Notes to Iron Mountain's Consolidated Financial Statements.

     Iron Mountain's revenues consist of storage revenues and service and
storage material sales revenues. Storage revenues are derived from charges for
storing records (either on a per unit or a per cubic foot of records basis), and
have accounted for approximately 60% of total revenues in each of the last five
years. Service and storage material sales revenues are derived primarily from
Iron Mountain's courier operations (consisting primarily of the pickup and
delivery of records upon customer request), additions of new Cartons, temporary
removal of records from storage, refiling of removed records, destructions of
records, permanent withdrawals from storage and sales of specially designed
storage containers and related supplies. Customers are generally billed on a
monthly basis on contractually agreed-upon terms.

     While Iron Mountain's total revenues have increased from $70.7 million for
1992 to $104.4 million for 1995, average revenue on a per Carton basis declined
over such period. The year-over-year declines in average revenue per Carton for
1993, 1994 and 1995 were approximately 8%, 7% and 2%, respectively. For 1996,
total revenues increased to $138.7 million, and there was no decline in average
revenue per Carton. Such declines had been attributable to: (i) increases in
sales to large volume accounts, which typically generate lower revenue per
Carton (in particular the RTC account, which incorporated substantial volume
discounts, although such discounts were offset by revenues from special service
projects during 1994); (ii) a facilities management arrangement with a large
volume account under which, prior to July 1996, Iron Mountain managed the
customer's records management facility and, therefore, the charges to the
customer prior to July 1996 did not include a rent component; and (iii)
industry-wide pricing pressures. Despite the decline, Iron Mountain has been
able to maintain its EBITDA margins through increased overall operating
efficiencies and economies of scale as well as specific efficiencies realized in
the servicing of large volume accounts. For 1993, 1994, 1995 and 1996, EBITDA
margins were 22.8%, 23.8%, 25.0% and 24.2%, respectively.

     Cost of sales (excluding depreciation) consists primarily of wages and
benefits, facility occupancy costs, vehicle and other equipment costs and
supplies. Of these, the most significant are wages and benefits and facility
occupancy costs. Over the past several years, Iron Mountain has been able to
reduce per Carton storage costs by: (i) designing racking systems and operating
space to maximize facility storage efficiency; (ii) negotiating favorable
facility leases and having facilities built to its custom specifications; and
(iii) leasing larger facilities, which, when filled, are less expensive per
Carton to operate.


                                       56

<PAGE>


     Selling, general and administrative expenses consist primarily of
management, administrative, sales and marketing wages and benefits, as well as
travel, communications, professional fees, bad debts, training, office equipment
and supplies expenses.

     Iron Mountain's depreciation and amortization charges result primarily from
the capital-intensive nature of the records management industry and the
acquisitions Iron Mountain has completed. The principal components of
depreciation relate to racking systems and related equipment, new buildings and
leasehold improvements, equipment for new facilities and computer system
software and hardware. Amortization primarily relates to goodwill and
noncompetition agreements arising from acquisitions and customer acquisition
costs. Iron Mountain has accounted for all of its acquisitions under the
purchase method. Since the purchase price for records management companies is
usually substantially in excess of the fair value of their net assets, these
purchases have given rise to significant goodwill and, accordingly, significant
levels of amortization. Although amortization is a non-cash charge, it does
decrease reported net income.

     In October 1996, Iron Mountain completed the sale of $165.0 million of the
Senior Subordinated Notes. The net proceeds to Iron Mountain were $160.1 million
after underwriting discounts and commissions. The net proceeds of the sale of
the Senior Subordinated Notes, after payment of related expenses, were used to
repay outstanding bank debt under the existing credit agreement, its 13.42%
Senior Subordinated Notes due December 14, 2000 (the "Chrysler Notes") and
certain other indebtedness, to fund the purchase price of an acquisition and for
general corporate purposes. In connection with the prepayment of such
indebtedness, Iron Mountain incurred an extraordinary charge of $3.5 million,
not including the related tax benefit of $1.4 million, during the fourth quarter
of 1996. The charge consists of a prepayment penalty, the write-off of deferred
financing costs, an original issue discount and loss on termination of interest
rate protection agreements. This charge did not impact Iron Mountain's EBITDA.

     In February 1996, Iron Mountain received net proceeds of $33.3 million from
its Initial Public Offering. Iron Mountain used $6.6 million of such net
proceeds to repurchase a warrant to acquire 444,385 shares of Iron Mountain
Common Stock (the "Warrant"). For financial reporting purposes, Iron Mountain
recorded a charge (based on the estimated redemption value calculated using the
effective interest rate method), resulting in substantial charges to net income
applicable to common stockholders over the period the Warrant was outstanding.
See Note 5 of Notes to Iron Mountain's Consolidated Financial Statements. The
remaining net proceeds were used by Iron Mountain to fund acquisitions, to repay
indebtedness used to fund acquisitions and for working capital.

     In December 1995, Iron Mountain decided to consolidate its corporate
accounting activities by transferring to Boston, Massachusetts those accounting
activities previously performed in Los Angeles, California. As a result of such
transfer, Iron Mountain recorded a charge of $0.5 million in the fourth quarter
of 1995 and a charge of $0.5 million for the year ended December 31, 1996.

     In March 1997, Iron Mountain experienced three fires that resulted in
extensive damage to two of its record management facilities in South Brunswick,
New Jersey. Approximately 1.0 million of the 1.2 million Cartons stored at these
facilities were destroyed. The fires are believed to be caused by arson and are
under investigation by local, state and federal authorities. The affected
facilities account for only two of Iron Mountain's 117 facilities nationwide (as
of March 21, 1997), and represented less than three percent of revenues and less
than two percent of EBITDA for 1996. Management believes that insurance will
cover substantially all of Iron Mountain's property and business interruption
losses relating to the fires. However, Iron Mountain may incur costs as a result
of the fires which will not be covered by insurance. Management is unable to
estimate at this time the magnitude of such costs. The claims process is lengthy
and its outcome cannot be predicted with certainty. Based on its present
assessment of the situation, management does not believe that the fires will
have a material adverse effect on Iron Mountain's financial condition or results
of operations, although there can be no assurance in this regard.


                                       57

<PAGE>


Results of Operations

     The following table sets forth, for the periods indicated, information
derived from Iron Mountain's consolidated statements of operations, expressed as
a percentage of revenues.

<TABLE>
<CAPTION>

                                                                        Year Ended December 31,
                                                                        -----------------------
                                                                1994              1995               1996
                                                         ------------------------------------------------------
<S>                                                            <C>               <C>                <C>

Revenues:
   Storage                                                      61.7%             61.4%              61.9%
   Service and Storage Material Sales                           38.3              38.6               38.1
                                                             -------           -------            -------
     Total Revenues                                            100.0             100.0              100.0
                                                             -------           -------            -------
Operating Expenses:
   Cost of Sales (Excluding Depreciation)                       52.4              50.1               51.0
   Selling, General and Administrative                          23.8              24.9               24.8
   Depreciation and Amortization                                 9.9              11.8               12.2
                                                             -------          --------            -------
     Total Operating Expenses                                   86.1              86.8               88.0
                                                             -------           -------            -------
Operating Income                                                13.9              13.2               12.0
Interest Expense                                                10.2              11.3               10.7
                                                             -------           -------            -------
Income before Provision for Income Taxes                         3.7               1.9                1.3
Provision for Income Taxes                                       2.2               1.7                1.0
                                                             -------           -------            -------
Income Before Extraordinary Charge                               1.5               0.2                0.3
Extraordinary Charge, Net of Tax Benefit                          --                --                1.6
                                                             --------           -------           -------
Net Income (Loss)                                                1.5               0.2               (1.3)
Accretion of Redeemable Put Warrant                              1.6               2.0                0.2
                                                             -------            -------           -------
Net Loss Applicable to Common Stockholders                      (0.1)%            (1.8)%             (1.5)%
                                                             =======            =======           =======

EBITDA                                                          23.8%             25.0%              24.2%
                                                             =======            =======           =======

</TABLE>

Year Ended December 31, 1996 Compared to Year Ended December 31, 1995

     Storage revenues increased from $64.2 million for the year ended December
31, 1995 to $85.8 million for the year ended December 31, 1996, an increase of
$21.6 million or 33.8%. Twenty acquisitions completed by Iron Mountain in 1995
and 1996 accounted for $15.0 million or 69.1% of such increase. The balance of
the storage revenues growth resulted primarily from net increases in Cartons
stored by existing customers and from sales to new customers.

     Service and storage material sales revenues increased from $40.3 million
for the year ended December 31, 1995 to $52.9 million for the year ended
December 31, 1996, an increase of $12.6 million or 31.3%. Acquisitions accounted
for $9.2 million or 72.7% of the increase. The balance of the increase resulted
from increases in service and storage material sales to existing customers and
the addition of new customer accounts.

     For the reasons discussed above, total revenues increased from $104.4
million for the year ended December 31, 1995 to $138.7 million for the year
ended December 31, 1996, an increase of $34.3 million or 32.8%. Of this
increase, $24.1 million, or 70.4%, was attributable to acquisitions completed by
Iron Mountain in 1995 and 1996. The monthly average Cartons stored increased
approximately 33% for 1996 as compared to 1995, from approximately 20.4 million
Cartons to approximately 27.1 million Cartons.


                                       58

<PAGE>


     Cost of sales (excluding depreciation) increased from $52.3 million for the
year ended December 31, 1995 to $70.7 million for the year ended December 31,
1996, an increase of $18.4 million or 35.3%, and increased as a percentage of
revenues from 50.1% for the year ended December 31, 1995 to 51.0% for the year
ended December 31, 1996. The $18.4 million increase was primarily attributable
to the increase in Cartons stored, increased expenses related to the severe
winter weather on the Atlantic coast during the first quarter of 1996 and
expenses related to certain facility relocations. The increase as a percentage
of revenue was primarily attributable to recent acquisitions, which initially
have lower gross margins than Iron Mountain.

     Selling, general and administrative expenses increased from $26.0 million
for the year ended December 31, 1995 to $34.3 million for the year ended
December 31, 1996, an increase of $8.3 million or 31.9%, and decreased as a
percentage of revenues from 24.9% for the year ended December 31, 1995 to 24.8%
for the year ended December 31, 1996. The $8.3 million increase was primarily
attributable to the costs associated with accelerated acquisition activity,
including certain redundant transitional expenses as new acquisitions were
integrated into Iron Mountain, with the addition of personnel needed to support
Iron Mountain's growth and with becoming a public company. A charge of $0.5
million related to moving the corporate accounting function from Los Angeles to
Boston was recorded in 1996. Additionally, the selling, general and
administrative expenses of acquired companies tend to be higher than Iron
Mountain's, and cost reductions and other possible synergies are not realized
immediately.

         Depreciation and amortization expense increased from $12.3 million for
the year ended December 31, 1995 to $16.9 million for the year ended December
31, 1996, an increase of $4.6 million or 37.2%, and increased as a percentage of
revenues from 11.8% for the year ended December 31, 1995 to 12.2% for the year
ended December 31, 1996. The $4.6 million increase was primarily attributable to
the additional depreciation and amortization expense related to the
aforementioned acquisitions, capital expenditures, including racking systems,
information systems and improvements to existing facilities, and additions to
customer acquisition costs.

     As a result of the foregoing factors, operating income increased from $13.8
million for the year ended December 31, 1995 to $16.7 million for the year ended
December 31, 1996, an increase of $2.9 million or 21.1%. As a percentage of
revenues, operating income decreased from 13.2% for the year ended December 31,
1995 to 12.0% for the year ended December 31, 1996.

     Interest expense increased from $11.8 million for the year ended December
31, 1995 to $14.9 million for the year ended December 31, 1996, an increase of
$3.1 million or 25.9%. The $3.1 million increase was primarily attributable to
increased indebtedness to finance acquisitions and capital expenditures. This
increase was partially offset by a decrease in Iron Mountain's effective
borrowing rates.

     As a result of the foregoing factors, income before provision for income
taxes decreased from $1.9 million (1.9% of revenues) for the year ended December
31, 1995 to $1.8 million (1.3% of revenues) for the year ended December 31,
1996, a decrease of $0.1 million or 7.9%. Provision for income taxes decreased
from $1.7 million (1.7% of revenues) for the year ended December 31, 1995 to
$1.4 million (1.0% of revenues) for the year ended December 31, 1996. Iron
Mountain's effective tax rate is higher than statutory rates primarily due to
the amortization of the nondeductible portion of goodwill associated with
acquisitions made prior to the change in tax laws which now generally permit
deduction of such expenses for asset purchases. Since Iron Mountain will acquire
all of the outstanding capital stock of Safesite in the Merger, goodwill
associated with the Merger will be nondeductible.

     In October 1996, Iron Mountain recorded an extraordinary charge of $3.5
million, not including the related tax benefit of $1.4 million, related to the
early retirement of certain indebtedness. The charge consists of a prepayment
penalty, the write-off of deferred financing costs, an original issue discount
and loss on termination of interest rate protection agreements.

     Net income (loss) was income of $0.2 million (0.2% of revenues) for the
year ended December 31, 1995 compared to a loss of $1.8 million (1.3% of
revenues) for the year ended December 31, 1996. Net loss applicable to common
stockholders was $1.9 million (1.8% of revenues), after accretion of $2.1
million related to the Warrant, for the year ended December 31, 1995 compared to
$2.0 million (1.5% of revenues), after accretion of

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<PAGE>


$0.3 million related to the Warrant, for the year ended December 31, 1996. The
Warrant was redeemed in full in February 1996, with a portion of the proceeds
from the Initial Public Offering. As a result of such redemption, there will be
no future charges for such accretion.

     As a result of the foregoing factors, EBITDA increased from $26.1 million
for the year ended December 31, 1995 to $33.6 million for the year ended
December 31, 1996, an increase of $7.5 million, or 28.7%. As a percentage of
revenues, EBITDA decreased from 25.0% for the year ended December 31, 1995 to
24.2% for the year ended December 31, 1996.

     Iron Mountain acquired sixteen records management businesses in 1996
compared to four records management businesses in 1995. Primarily as a result of
Iron Mountain's acquisition activity, EBITDA margins were lower for the year
ended December 31, 1996 compared to the prior year. The decrease was primarily
attributable to the fact that the acquired businesses are initially less
operationally efficient than Iron Mountain and the anticipated margin increases
are generally not realized immediately.

Year Ended December 31, 1995 Compared to Year Ended December 31, 1994

     Storage revenues increased from $54.1 million for 1994 to $64.2 million for
1995, an increase of $10.1 million or 18.6%. Seven acquisitions completed
between June 1994 and December 1995 accounted for $5.7 million or 56.7% of such
increase. The balance of the storage revenues growth resulted primarily from net
increases in Cartons stored by existing customers and from sales to new
customers.

     Service and storage material sales revenues increased from $33.5 million
for 1994 to $40.3 million for 1995, an increase of $6.8 million or 20.1%. This
increase was accomplished despite a decrease of approximately $0.8 million in
such revenues received from the RTC, which decrease was primarily due to a
reduction in revenues from special service projects. Acquisitions accounted for
$4.3 million or approximately 63.5% of such increase. The balance of such
increase resulted from increases in service and storage material sales to
existing customers and the addition of new customer accounts.

     For the reasons discussed above, total revenues increased from $87.6
million for 1994 to $104.4 million for 1995, an increase of $16.8 million or
19.2%. Of such increase, $10.0 million or 59.4% was attributable to acquisitions
made by Iron Mountain between June 1994 and December 1995. The monthly average
Cartons stored increased approximately 22% in 1995 as compared to 1994, from
approximately 16.7 million Cartons to approximately 20.4 million Cartons. The
percentage increase was greater than that of total revenues primarily for the
reasons described in the third paragraph under "Overview" above.

     Cost of sales (excluding depreciation) increased from $45.9 million for
1994 to $52.3 million for 1995, an increase of $6.4 million or 13.9%, and
decreased as a percentage of revenues from 52.4% for 1994 to 50.1% for 1995. The
$6.4 million increase resulted primarily from an increase in Cartons stored. The
decrease as a percentage of revenues was due primarily to increased storage
efficiencies resulting from relocations to, or additions of, newer, higher
density facilities as well as increased utilization of storage capacity.

     Selling, general and administrative expenses increased from $20.9 million
for 1994 to $26.0 million for 1995, an increase of $5.1 million or 24.9%, and
increased as a percentage of revenues from 23.8% for 1994 to 24.9% for 1995. The
$5.1 million increase was due primarily to increases in field management and
administrative staffing, including increases due to acquisitions. Of the 1.1%
increase as a percentage of revenues, $0.6 million (0.6% of revenues) resulted
from a provision for a judgment in a lawsuit relating to a 1992 incident and a
$0.5 million (0.5% of revenues) charge for the relocation of the corporate
accounting function from Los Angeles to Boston.

     Depreciation and amortization expenses increased from $8.7 million for 1994
to $12.3 million for 1995, an increase of $3.6 million or 42.0%, and increased
as a percentage of revenues from 9.9% for 1994 to 11.8% for 1995. Depreciation
and amortization expenses, both in absolute dollars and as a percentage of
revenues, continued to increase, primarily as a result of Iron Mountain's
acquisitions and growth-related capital investments for racking systems,
improvements to records management facilities, information systems and customer
acquisition costs. Amortization during 1995 included a one-time charge of $0.9
million (0.9% of revenues) in connection with the

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<PAGE>


write-down of the goodwill of a subsidiary due to Iron Mountain's decision to
sell such subsidiary at an estimated price which is $0.9 million less than such
subsidiary's book value and related goodwill. Iron Mountain subsequently decided
not to sell such subsidiary.

     As a result of the foregoing factors, operating income increased from $12.2
million for 1994 to $13.8 million for 1995, an increase of $1.6 million or
13.0%, and decreased as a percentage of revenues from 13.9% to 13.2%.

     Interest expense increased from $9.0 million for 1994 to $11.8 million for
1995. This increase was due primarily to increased levels of indebtedness
primarily to finance acquisitions, as well as higher interest rates and higher
deferred financing charges.

     As a result of the foregoing factors, income before provision for income
taxes decreased from $3.2 million (3.7% of revenues) for 1994 to $1.9 million
(1.9% of revenues) for 1995, a decrease of $1.3 million or 40.0%. Provision for
income taxes decreased from $2.0 million (2.2% of revenues) to $1.7 million
(1.7% of revenues). Iron Mountain's effective tax rates for 1994 and 1995 were
higher than statutory rates primarily due to $1.5 million and $2.5 million,
respectively, of amortization of nondeductible goodwill.

     Net income decreased $1.1 million from $1.3 million (1.5% of revenues) for
1994 to $0.2 million (0.2% of revenues) for 1995 as a result of the factors
outlined above.

     As a result of the foregoing factors, EBITDA increased from $20.9 million
for 1994 to $26.1 million for 1995, an increase of $5.2 million or 25.1%, and
increased as a percentage of revenues from 23.8% to 25.0%. These increases
reflect continuing economies of scale and increased operating efficiencies,
which were partially offset by the $0.6 million (0.6% of revenues) reserve
relating to the judgment in the lawsuit referred to above and by the $0.5
million (0.5% of revenues) charge for the relocation of the corporate accounting
function from Los Angeles to Boston.

Liquidity and Capital Resources

     In February 1996, Iron Mountain raised $33.3 million, net of underwriters'
discounts and commissions and associated costs, in the Initial Public Offering.
The net proceeds from the Initial Public Offering were used to retire the
Warrant, to fund acquisitions, to repay debt that had been incurred to make
acquisitions and for working capital.

     On October 1, 1996, Iron Mountain completed the sale of $165.0 million of
the Senior Subordinated Notes. The net proceeds to Iron Mountain were $160.1
million after underwriting discounts and commissions. The net proceeds of the
sale of the Senior Subordinated Notes, after payment of related expenses, were
used to repay outstanding bank debt under the existing credit agreement, the
Chrysler Notes and certain other indebtedness, to fund the purchase price of an
acquisition and for general corporate purposes. In connection with the
prepayment of the outstanding bank debt, the Chrysler Notes and certain other
indebtedness, Iron Mountain incurred an extraordinary charge of $3.5 million,
not including the related tax benefit of $1.4 million, during the fourth quarter
of 1996. The charge consists of a prepayment penalty, the write-off of deferred
financing costs an original issue discount and loss on termination of interest
rate protection agreements. This charge did not impact Iron Mountain's EBITDA.

     In connection with the sale of the Senior Subordinated Notes, Iron Mountain
entered into the Credit Agreement, which provided for $100 million of revolving
credit availability. On March 3, 1997 the Company entered into an Amendment and
Restatement of the Credit Agreement, which increased credit availability under
the facility to $150 million.

     As Iron Mountain has sought to increase its EBITDA, it has made significant
capital investments, consisting primarily of acquisitions; growth-related
capital expenditures, including racking systems, information systems and
improvements to existing facilities; and customer acquisition costs. These
investments have been primarily funded through a portion of the net proceeds of
the Initial Public Offering and the sale of the Senior Subordinated Notes, cash
flows from operations and borrowings under Iron Mountain's credit agreements.


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<PAGE>


Capital Investments

     For 1994, 1995 and 1996, Iron Mountain's growth-related capital
expenditures were $15.8 million, $14.4 million and $23.3 million, respectively.
Included in capital expenditures for 1994 is $2.9 million for the construction
of a records management facility which was sold in a sale and leaseback
transaction. Growth-related capital expenditures consist primarily of investment
in racking systems, new building and leasehold improvements, equipment for new
facilities, management information systems and facilities restructuring. For
1994, 1995 and 1996, Iron Mountain's maintenance capital expenditures were $1.2
million, $0.9 million and $1.1 million, respectively.

     In addition, Iron Mountain incurs costs (net of revenues received for the
initial transfer of records) related to the acquisition of large volume accounts
(typically over 10,000 Cartons). For 1994, 1995 and 1996, Iron Mountain's
additions to customer acquisition costs were $1.4 million, $1.4 million and $1.6
million, respectively.

Recent and Pending Acquisitions

     Iron Mountain's liquidity and capital resources have been significantly
impacted by acquisitions and, given Iron Mountain's acquisition strategy, may be
significantly impacted for the foreseeable future. In order to capitalize on
industry consolidation, Iron Mountain, in mid-1994, adopted a more active
acquisition strategy. Since mid-1994, Iron Mountain has acquired or entered into
agreements to acquire 30 records management businesses (including the Merger
Agreement), 29 of these acquisitions have been completed, for a total purchase
price of approximately $198.8 million (not including contingent payments of up
to $4.8 million based upon the achievement of certain revenue targets during
1997 and 1998). Iron Mountain has historically financed its acquisitions with
borrowings under its credit agreements in conjunction with cash flows provided
by operations and, more recently, from a portion of the proceeds of the Initial
Public Offering and the sale of the Senior Subordinated Notes. Under the terms
of the Merger Agreement, however, approximately $50 million of the $62 million
purchase price for Safesite will be in the form of shares of Iron Mountain
Common Stock or immediately exercisable options to acquire shares of Iron
Mountain Common Stock. Iron Mountain's future interest expense may increase
significantly as a result of the additional indebtedness Iron Mountain may incur
to finance possible future acquisitions. To the extent that future acquisitions
are financed by additional borrowings under the Credit Agreement or other credit
facilities, the resulting increase in debt and interest expense could have a
negative effect on such measures of liquidity, debt to equity, EBITDA to debt
and EBITDA to interest expense.

Sources of Funds

     During 1996, Iron Mountain generated $15.9 million in net cash from
operations compared to $15.7 million for the same period in 1995. The slight
increase in net cash provided by operations resulted from an increase in EBITDA,
which was partially offset by an increase in accounts receivable related to
increased revenues and decreases in accounts payable, accrued expenses and other
asset and liability accounts. During the year ended December 31, 1994, Iron
Mountain generated net cash from operations of $11.6 million.

     At December 31, 1996, Iron Mountain had estimated net operating loss
carryforwards of approximately $11.5 million for federal income tax purposes. As
a result of such loss carryforwards, cash paid for income taxes has historically
been substantially lower than the provision for income taxes.

     Net cash provided by financing activities was $6.7 million and $34.1
million for 1994 and 1995, respectively, substantially all of which was provided
under a then existing credit agreement, and $80.6 million for the year ended
December 31, 1996, consisting primarily of the net proceeds of $160.1 million
from the sale of the Senior Subordinated Notes and of $33.3 million from the
Initial Public Offering, offset by $102.1 million of increased indebtedness and
by $6.6 million due to the retirement of the Warrant.

Credit Arrangements of Iron Mountain

     The Credit Agreement, as amended, is a $150 million revolving credit
facility. The Credit Agreement will terminate on September 30, 2001, at which
time all outstanding revolving credit loans and other amounts payable

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<PAGE>


thereunder will become due. Borrowings under the Credit Agreement may be used to
finance possible future acquisitions, as well as for working capital and general
corporate purposes. Iron Mountain's obligations under the Credit Agreement are
guaranteed by substantially all of Iron Mountain's subsidiaries and are secured
by the pledge of the stock of such subsidiaries. Prepayments of outstanding
borrowings under the Credit Agreement are required in certain circumstances out
of the proceeds of certain insurance payments, condemnations, issuances of
indebtedness and asset dispositions.

     The Credit Agreement permits Iron Mountain to elect interest rates from
time to time, as to all or a portion of the borrowings made thereunder, at
interest rates based upon the applicable reference rate and a margin or spread
over such reference rate (which spread varies based upon the ratio of Iron
Mountain's indebtedness to EBITDA). The reference rate, at Iron Mountain's
option, may be based upon (i) the agent's prime rate, (ii) a certificates of
deposit rate, (iii) an overnight federal funds rate or (iv) for periods of up to
12 months, the interest rates prevailing on the date of determination in the
London interbank markets.

     The Credit Agreement and the Note Indenture contain covenants restricting
the ability of Iron Mountain and its subsidiaries to, among other things: (i)
declare dividends or redeem or repurchase capital stock; (ii) make optional
payments and modifications of subordinated and other debt instruments; (iii)
incur liens and engage in sale and leaseback transactions; (iv) make loans and
investments; (v) incur indebtedness and contingent obligations; (vi) make
capital expenditures; (vii) engage in mergers, acquisitions and asset sales;
(viii) enter into transactions with affiliates; and (ix) make changes in their
lines of business. Iron Mountain will also be required to comply with financial
covenants with respect to: (i) a maximum leverage ratio; (ii) a minimum interest
coverage ratio; and (iii) a minimum fixed charge coverage ratio. Iron Mountain
has also made certain customary affirmative covenants. The Credit Agreement and
the Note Indenture also contain customary events of default.

     The annual maturities of Iron Mountain's indebtedness for 1997, 1998, 1999,
2000 and 2001 are $0.4 million, $0.4 million, $0.4 million, $7.8 million and
$9.3 million respectively. Subsequent to December 31, 1996, Iron Mountain
borrowed $29.3 million under the Credit Agreement to finance acquisitions. As of
April 4, 1997, Iron Mountain had $222.9 million in total indebtedness and $102.8
million available under the Credit Agreement.

     Under the Credit Agreement, Iron Mountain is required to use interest rate
protection products to reduce its exposure to increases in interest rates. As of
December 31, 1996, Iron Mountain had $184.7 million of total debt, of which
$175.7 million had fixed interest rates and $9.0 million had variable interest
rates. Consistent with the Credit Agreement, the Company has in place interest
rate cap agreements covering a notional amount of $30.0 million. See Note 3 of
Notes to Iron Mountain's Consolidated Financial Statements.

Future Capital Needs

     Iron Mountain's ability to generate cash adequate to fund its needs depends
generally on the results of its operations and the availability of financing.
Management believes that cash flow from operations in conjunction with
borrowings from existing and possible future credit facilities will be
sufficient for the foreseeable future to meet debt service requirements and to
make possible future acquisitions and capital expenditures. However, there can
be no assurance in this regard or that the terms available for any future
financing, if required, would be favorable to Iron Mountain.

     At the 1997 Annual Meeting of Stockholders, the stockholders of Iron
Mountain will be asked to approve an amendment to the Iron Mountain Restated
Certificate to increase the number of shares of Iron Mountain Common Stock that
Iron Mountain is authorized to issue from 13,000,000 to 20,000,000 shares. Such
additional shares would provide Iron Mountain with additional flexibility to
issue shares in connection with business acquisitions or for cash through sales
of stock to public and private investors. There can be no assurance that such
approval will be received.

Seasonality

     Historically, Iron Mountain's business has not been subject to seasonality
in any material respect.


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Inflation

     Certain of Iron Mountain's expenses, such as wages and benefits, occupancy
costs and equipment repair and replacement, are subject to normal inflationary
pressures. Although Iron Mountain to date has been able to offset inflationary
cost increases through increased operating efficiencies, there can be no
assurance that Iron Mountain will be able to offset any future inflationary cost
increases through similar efficiencies or increased storage or service charges.


                           MANAGEMENT OF IRON MOUNTAIN


 Directors, Executive Officers and Certain Other Officers

     The Directors, executive officers and certain other officers of Iron
Mountain are as follows:

<TABLE>
<CAPTION>


Names of Directors and Executive Officers              Age              Position
- -----------------------------------------              ---              --------
<S>                                                    <C>              <C>

C. Richard Reese(1)                                    51               Chairman of the Board of Directors and Chief
                                                                        Executive Officer
David S. Wendell                                       43               President and Chief Operating Officer,
                                                                        Director
Eugene B. Doggett(1)(2)                                60               Executive Vice President and Chief Financial
                                                                        Officer, Director
Robert G. Miller                                       40               Executive Vice President
Kenneth F. Radtke, Jr.                                 51               Executive Vice President
Robert P. Swift                                        55               Executive Vice President
Constantin R. Boden(3)(4)                              60               Director
Arthur D. Little(3)(4)                                 53               Director
Vincent J. Ryan(1)(4)                                  61               Director
B. Thomas Golisano(5)                                  55               Director

Names of Certain Other Officers                        Age              Position
- -------------------------------                        ---              --------
Jean A. Bua                                            38               Vice President and Corporate Controller
James R.  Jandl                                        42               Vice President of Human Resources
John F. Kenny, Jr.(2)                                  39               Vice President of Corporate Development
Joseph J. Larizza                                      55               Vice President and Chief Information Officer
John P. Lawrence                                       45               Vice President and Treasurer
Kenneth A. Rubin                                       35               Vice President of Marketing
T. Anthony Ryan                                        56               Vice President of Real Estate
- -------------
</TABLE>


(1)  Member of the Executive Committee; Mr. Ryan is the Chairman of the
     Executive Committee.

(2)  Mr. Doggett has announced his intention to retire as Chief Financial
     Officer effective as of May 29, 1997. Mr. Kenny will be Mr. Doggett's
     successor in such capacity.

(3)  Member of the Audit Committee; Mr. Boden is the Chairman of the Audit
     Committee.

(4)  Member of the Compensation Committee; Mr. Little is the Chairman of the
     Compensation Committee.

(5)  In accordance with the terms of the Merger Agreement, upon the consummation
     of the Merger, Mr. Golisano will be appointed to serve as a Class A
     Director.

     The Iron Mountain Board currently consists of six directors. There are
three classes of directors who serve for three-year terms and are elected on a
staggered basis, one class of two directors standing for election each year. The
term of the Class B Directors, C. Richard Reese and Arthur D. Little, will
expire at the 1997 Annual Meeting of Stockholders, the term of the Class C
Directors, Eugene B. Doggett and Constantin R. Boden, will expire at the 1998
Annual Meeting of Stockholders and the term of the Class A Directors, David S.
Wendell and Vincent J. Ryan, will expire at the 1999 Annual Meeting. In
accordance with the terms of the Merger Agreement, upon the

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<PAGE>


consummation of the Merger, Mr. Golisano will be appointed to serve as a Class A
Director. Directors of each class will thereafter hold office until the third
annual meeting of the stockholders of Iron Mountain following their election or
until their successors are elected and qualified.

     The executive officers and other officers were elected by the Iron Mountain
Board on June 14, 1996, with the exception of Mr. Radtke, who was elected in
late June 1996, and Mr. Miller, who was elected in December 1996. All executive
officers and other officers hold office at the discretion of the Iron Mountain
Board until the first meeting of the Iron Mountain Board following the next
annual meeting of stockholders and until their successors are chosen and
qualified.

Directors and Executive Officers

     C. Richard Reese is the Chairman of the Iron Mountain Board, a position he
has held since November 1995, and the Chief Executive Officer, a position he has
held since December 1981. Prior to November 1995, Mr. Reese was the President of
Iron Mountain, a position he had held since 1981. Mr. Reese is also a Director
of Schooner. Prior to joining Iron Mountain, he lectured at Harvard Business
School in "Entrepreneurship" and provided consulting services to small and
medium-sized emerging enterprises. Mr. Reese has also served as president and a
Director of PRISM International. He holds a Master of Business Administration
degree from Harvard Business School.

     David S. Wendell is the President and Chief Operating Officer of Iron
Mountain, a position he has held since November 1995. After practicing law with
Brown & Wood, Mr. Wendell joined Iron Mountain in 1984, where he has served in a
variety of positions. Prior to November 1995, he was Executive Vice President,
Atlantic Area and prior to 1991, he was Vice President, New England Region. He
holds a Master of Business Administration degree from Harvard Business School
and a Juris Doctor degree from the University of Virginia.

     Eugene B. Doggett is the Executive Vice President and Chief Financial
Officer of Iron Mountain, a position he has held since 1987. Mr. Doggett is also
a Director of Schooner. Prior to joining Iron Mountain, he had extensive
experience in commercial and investment banking, as well as financial and
general management experience at senior levels. He holds a Master of Business
Administration degree from Harvard Business School. Mr. Doggett has announced
his intention to retire as Chief Financial Officer effective as of May 29, 1997.
Mr. Doggett will continue with Iron Mountain as an Executive Vice President,
focusing on strategic issues and special projects, and as a Director. Mr. Kenny
will succeed Mr. Doggett as Chief Financial Officer.

     Robert G. Miller is an Executive Vice President of Iron Mountain, a
position that he has held since December 1996. Mr. Miller joined Iron Mountain
in 1988 and held the positions of district manager from 1988 through 1991 and
regional vice president from 1991 through 1996. Prior to 1988, Mr. Miller was
employed as a district manager at Bell & Howell Records Management Company.

     Kenneth F. Radtke, Jr. is an Executive Vice President of Iron Mountain, a
position that he has held since June 1996. Prior to June 1996, Mr. Radtke was
Northeast Regional Vice President and prior to 1995 was Sales Manager, New York
Region. Mr. Radtke has worked in the records and information industry since 1988
as President and Chief Executive Officer, Dataport Company, Inc. and Senior Vice
President, Arcus, Inc. He holds a graduate degree from the University of
Wisconsin, Graduate School of Banking.

     Robert P. Swift is an Executive Vice President of Iron Mountain, a position
he has held since November 1995. Prior to November 1995, Mr. Swift was the
Executive Vice President, Western Area of Iron Mountain and prior to 1988, Mr.
Swift was employed in various positions at Bell & Howell Records Management
Company.

     Constantin R. Boden is a Director of Iron Mountain, a position he has held
since December 1990. Mr. Boden is on the advisory board of Boston Capital
Ventures, a risk capital concern. For 33 years, until January 1995, Mr. Boden
was employed by Bank of Boston, most recently as Executive Vice President,
International Banking. He holds a Master of Business Administration degree from
Harvard Business School.


                                       65

<PAGE>



     Arthur D. Little is a Director of Iron Mountain, a position he has held
since November 1995. Mr. Little is a principal of The Little Investment Company,
which he founded in 1992. Prior to that, he was Managing Director of and also a
partner in Narragansett Capital, Inc., a private investment firm. He holds a
Bachelor of Arts degree in history from Stanford University.

     Vincent J. Ryan is a Director of Iron Mountain. Mr. Ryan is the founder of
Schooner and has served as Chairman and Chief Executive Officer of Schooner
since 1971. Prior to November 1995, Mr. Ryan served as Chairman of the Board of
Directors of Iron Mountain. He holds a Bachelors of Arts degree in English from
Boston University.

     B. Thomas Golisano will be appointed to serve as a Director of Iron
Mountain following the Closing Date. He founded Paychex, Inc., a publicly held,
national payroll service company, in 1971 and has served for more than five
years as its Chairman, President and Chief Executive Officer. Mr. Golisano
serves on the Board of Trustees of Rochester Institute of Technology and on the
boards of several privately held companies. He has also served on the boards of
numerous non-profit organizations and is founder of the B. Thomas Golisano
Foundation.

Certain Other Officers

     Jean A. Bua is Vice President and Corporate Controller. Ms. Bua joined Iron
Mountain in such capacity in March 1996. From 1993 to 1996, Ms. Bua was the
Corporate Controller for Duracraft Corp., a consumer products manufacturer.
Prior to that, Ms. Bua was the accounting manager for a high-tech manufacturer
and was a management consultant for Ernst & Young. She holds a Master of
Business Administration degree from the University of Rhode Island. Ms. Bua is a
certified public accountant.

     James R. Jandl is Vice President of Human Resources. Mr. Jandl joined Iron
Mountain in 1989. For the preceding nine years he was involved in human
resources management in the hospitality industry with focus on operational
start-up and turn-around situations. He holds a masters degree in psychology
from West Georgia College.

     John F. Kenny, Jr. is Vice President of Corporate Development, with primary
responsibility for implementing Iron Mountain's acquisition strategy. He will
become the Chief Financial Officer of Iron Mountain upon the retirement of Mr.
Doggett from such position on May 29, 1997. Mr. Kenny joined Iron Mountain in
1991, and held operating responsibility as Regional Vice President of New
England and later Northeast operations before assuming the position of Vice
President of Corporate Development in 1995. Prior to 1991, he was a Vice
President of CS First Boston Merchant Bank, New York, with responsibility for
risk capital investments. He holds a Master of Business Administration degree
from Harvard Business School.

     Joseph J. Larizza is Vice President and Chief Information Officer, with
responsibility for management information systems, including oversight of the
development of Iron Mountain's Safekeeper system. Prior to joining Iron Mountain
in 1996, Mr. Larizza was the chief information officer at Service America, a
large food service corporation and, prior to that, chief information officer at
the Advertising Checking Bureau, with responsibility for information systems and
development of client-server products. He holds a Bachelors degree in management
from Post College.

     John P. Lawrence is Vice President and Treasurer, with responsibility for
acquisition integration, internal audit, risk management and purchasing and
contracting. Mr. Lawrence has been associated with Iron Mountain since 1988.
Prior to 1988, he worked for Hewlett Packard for nine years in various
management positions in finance, control, marketing and manufacturing. He holds
a Master of Business Administration degree from Harvard Business School.

     Kenneth A. Rubin is Vice President of Marketing. Mr. Rubin joined Iron
Mountain in 1989. Prior to 1989, he was Director of both Sales and Marketing for
Leahy/Instar, a records management company. He was also a founding director of
Software Escrow Security. He holds a Bachelors degree in political science from
Drew University.


                                       66

<PAGE>



     T. Anthony Ryan is Vice President of Real Estate. Mr. Ryan manages the real
estate department of Iron Mountain and is responsible for identifying and
evaluating new facility opportunities and negotiating long-term leases. He has
been involved in real estate development for 22 years. His work experience
includes positions as Director of Development for Gilbane Property, Vice
President of CRJ Investments and, more recently, Vice President and Partner at
the Linpro Company. He holds a Bachelors degree in history from The George
Washington University.

     Biographical information of the Directors, executive officers and other
officers is as of March 28, 1997.


Executive Compensation

     The following table provides certain information concerning compensation
earned by the Chief Executive Officer and the four highest paid executive
officers serving in such capacity at December 31, 1996 who received compensation
in excess of $100,000 (collectively, the "Named Executive Officers") for the
years ended December 31, 1994, December 31, 1995 and December 31, 1996.

                           Summary Compensation Table

<TABLE>
<CAPTION>

                                                         Annual Compensation                  Long-Term Compensation
                                                         -------------------                  ----------------------
                                                                                      Number of Shares
                 Name and                                                                Underlying              All Other
            Principal Position               Year      Salary         Bonus                Options            Compensation (1)
            ------------------               ----      ------         -----                -------            ----------------
<S>                                          <C>       <C>            <C>                <C>                      <C>

C.  Richard Reese..........................  1996      $268,958       $165,000               0                    $2,250
  Chairman of the Board and Chief            1995      $261,765       $200,000               0                    $1,790
  Executive Officer                          1994      $255,400       $125,000               0                    $1,623
David S.  Wendell..........................  1996      $203,550       $125,000             40,000                 $2,250
  President and Chief Operating Officer      1995      $136,627       $ 62,731           35,469 (2)               $1,573
                                             1994      $129,800       $ 50,000               0                    $1,352
Eugene B.  Doggett.........................  1996      $194,639       $100,000               0                    $2,250
  Executive Vice President and Chief         1995      $192,274       $165,000               0                    $1,790
     Financial Officer                       1994      $187,500       $ 93,750               0                    $1,623
Robert P.  Swift...........................  1996      $133,600        $50,800             15,000                 $1,905
  Executive Vice President                   1995      $131,119        $24,397            8,096 (2)               $1,243
                                             1994      $126,600        $16,740               0                     $865
Kenneth F. Radtke, Jr......................  1996      $119,800        $33,759             20,000                 $1,350
  Executive Vice President
- -------------
</TABLE>

(1)  Reflects Iron Mountain's matching contribution to the Iron Mountain Profit
     Sharing Retirement Plan for each individual. The amounts shown for 1996 are
     estimated maximum contributions; the actual contributions have not yet been
     calculated.

(2)  These options were granted in 1995 contingent upon Iron Mountain's
     completion of its Initial Public Offering, which was consummated in 1996.


Compensation Committee Interlocks and Insider Participation

     The Compensation Committee consists of Mr. Little, who is the Chairman of
the Committee, and Messrs. Boden and Ryan. Messrs. Reese and Doggett are
executive officers of Iron Mountain and are directors of Schooner. Mr. Ryan is
the Chairman of the Board and principal stockholder of Schooner.

     In each of 1994 and 1995, Iron Mountain paid fees of $111,048 to Schooner
for consulting services rendered by Mr. Ryan. These services and fees terminated
as of December 31, 1995.

                                       67

<PAGE>


     IMRM is the tenant under a lease dated January 1, 1991 for a 31,500
square-foot building in Houston, Texas. The owner of the building is IM Houston
(CR) Limited Partnership, a Texas limited partnership, of which Mountain Realty,
Inc., a Massachusetts corporation whose sole stockholder is Vincent J. Ryan, is
the sole general partner, and the limited partners of which are C. Richard Reese
and Eugene B. Doggett. The term of the lease expires December 31, 2000, with two
five-year extension options exercisable by IMRM. IMRM currently pays annual rent
in the amount of approximately $99,000, subject to adjustment in 1999 (and in
the option periods if the term is extended) based upon percentage changes in the
consumer price index, with a floor of 3% and a ceiling of 5%, compounded
annually. As tenant, IMRM is responsible for taxes, insurance and maintenance.
The space is used by IMRM as a records management facility. During 1994, 1995
and 1996, IMRM paid rent in the annual amount of $88,000, $93,000 and $93,625
respectively, under the lease. The lease is, in the opinion of management, on
commercially reasonable terms, no less favorable to IMRM than could have been
obtained from an unaffiliated party at the time of the transaction.

     Iron Mountain paid compensation of $144,000, $154,000 and $155,720 for
1994, 1995 and 1996, respectively, to Mr. T. Anthony Ryan. Mr. Ryan is Vice
President, Real Estate, of Iron Mountain and is the brother of Mr. Vincent J.
Ryan, a Director and the former Chairman of the Board of Iron Mountain. Iron
Mountain believes that the terms of Mr. Ryan's employment are no less favorable
to it than would be negotiable with an unrelated third party.

     Iron Mountain was indebted to Schooner in the principal amount of $382,500
under a junior subordinated note, which was incurred by Iron Mountain in 1990 in
connection with an acquisition. Schooner subsequently acquired the note from the
holder as an investment. Iron Mountain prepaid such indebtedness in its entirety
with a portion of the net proceeds from the Note Offering.

     Schooner leases space from Iron Mountain at Iron Mountain's corporate
headquarters. Such lease is a tenancy- at-will and may be terminated by either
Iron Mountain or Schooner at any time. As consideration for such lease, Schooner
pays rent to Iron Mountain based on its pro rata share of all expenses related
to the use and occupancy of the premises. The rent paid by Schooner to Iron
Mountain under such lease was approximately $58,000, $49,000 and $68,000 in
1994, 1995 and 1996, respectively.

     Employees of Schooner were eligible to participate in the Iron Mountain
Profit Sharing Retirement Plan, a Section 401(k) plan, as well as Iron
Mountain's group medical, dental, life, disability and accidental death and
dismemberment arrangements (the "Company Benefit Plans"). Schooner reimbursed
Iron Mountain for costs incurred as a result of the participation of Schooner
employees in Company Benefit Plans. Participation by Schooner employees in Iron
Mountain Benefit Plans terminated shortly after the consummation of the Initial
Public Offering.


Director Compensation

     Directors who are employees of Iron Mountain do not receive additional
compensation for serving as directors. Each director who is not an employee of
Iron Mountain (each an "Eligible Director") receives an annual retainer fee of
$10,000 as compensation for his or her services as a member of the Iron Mountain
Board and is also paid $2,500 per quarter (to a maximum of $10,000 per year) for
attendance at meetings (the "Director's Compensation"). All directors of Iron
Mountain are reimbursed for out-of-pocket expenses incurred in attending
meetings of the Iron Mountain Board or committees thereof, and for other
expenses incurred in their capacities as directors of Iron Mountain. Pursuant to
the Iron Mountain Incorporated 1995 Stock Plan for Non-Employee Directors (the
"Directors Plan"), Eligible Directors may elect to receive all or a portion of
their Director Compensation in the form of Iron Mountain Common Stock. An
Eligible Director electing to receive Iron Mountain Common Stock under the
Directors Plan will, as an incentive, receive in lieu of cash an amount of Iron
Mountain Common Stock equivalent to 110% of the Director Compensation otherwise
due to be paid in cash. Iron Mountain has reserved 15,000 shares of Iron
Mountain Common Stock for issuance under the Directors Plan. The Iron Mountain
Board has approved the termination of the Directors Plan, effective June 30,
1997. Thereafter, Directors may be granted options, either in lieu of or in
addition to the Director's Compensation, under the Iron Mountain Stock Option
Plan.

                                       68

<PAGE>


Stock Option Information

     Effective November 30, 1995, Iron Mountain instituted the Iron Mountain
Stock Option Plan, which is administered by the Stock Incentive Plan
Subcommittee of the Compensation Committee, as a restatement of Iron Mountain's
then-existing stock option plan. The Iron Mountain Stock Option Plan was amended
by the Iron Mountain Board on March 3, 1997. The purpose of the Iron Mountain
Stock Option Plan is to encourage key employees, directors, and consultants of
Iron Mountain and its subsidiaries who render services of special importance to,
and who have contributed or may be expected to contribute materially to the
success of, Iron Mountain or a subsidiary to continue their association with
Iron Mountain and its subsidiaries by providing favorable opportunities for them
to participate in the ownership of Iron Mountain and in its future growth
through the granting of restricted shares, options to acquire Iron Mountain
Common Stock ("Options"), stock appreciation rights and other rights to
compensation in amounts determined by the value of the Iron Mountain Common
Stock. Restricted shares, stock appreciation rights and other rights are
referred to collectively as "Other Rights."

     The total number of shares of Iron Mountain Common Stock that may be
subject to Options and Other Rights under the Iron Mountain Stock Option Plan
may not exceed 1,000,000 and grants to any single employee may not exceed in the
aggregate 250,000 shares. The Iron Mountain Board has approved an increase in
the number of shares of Iron Mountain Common Stock reserved under the Iron
Mountain Stock Option Plan to 1,400,000; such increase is subject to Iron
Mountain stockholder approval. As of January 1, 1997, Options to acquire 762,861
shares of Iron Mountain Common Stock were outstanding under the Iron Mountain
Stock Option Plan and 185,355 shares of Iron Mountain Common Stock were
available for grants of Options and/or Other Rights under the Iron Mountain
Stock Option Plan. In no event will any Option intended to qualify as an
incentive stock option (an "ISO") within the meaning of Section 422 of the Code,
be exercisable after the expiration of ten years after the date of grant or have
an exercise price that is less than the fair market value of Iron Mountain
Common Stock on the date the ISO is granted.

     Awards of Options and Other Rights under the Iron Mountain Stock Option
Plan are made by the Stock Incentive Plan Subcommittee of the Compensation
Committee, consisting of Messrs. Little and Boden, which selects the persons to
whom Options and Other Rights are to be granted and determines the number or
value and the terms and conditions of Options or Other Rights granted, including
the exercise price, the term and the vesting of such Option or Other Right. Each
Option is evidenced by an option agreement setting forth the terms of such
Option. In the case of any employee who owns (or is considered under Section
424(d) of the Code as owning) stock possessing more than 10% of the total
combined voting power of all classes of stock of Iron Mountain or any of its
subsidiaries, no ISO shall be exercisable after the expiration of five years
from its date of grant and the exercise price of such ISO shall be at least 110%
of the fair market value of Iron Mountain Common Stock on the date such ISO is
granted.

     The exercise price in respect of any Option may be paid in cash, in shares
of Iron Mountain Common Stock owned by the optionee, by delivery of a recourse
promissory note secured by the Iron Mountain Common Stock acquired upon exercise
of the Option or by means of a "cashless exercise" procedure in which a broker
transmits to Iron Mountain the exercise price in cash, either as a margin loan
or against the optionee's notice of exercise and confirmation by Iron Mountain
that it will issue and deliver to the broker stock certificates for that number
of shares of Iron Mountain Common Stock having an aggregate fair market value
equal to the exercise price or agrees to pay the Option price to Iron Mountain
in cash upon its receipt of stock certificates. In its discretion, the Stock
Incentive Plan Subcommittee of the Compensation Committee may grant a new option
to purchase the number of shares of Iron Mountain Common Stock delivered to Iron
Mountain in full or partial payment of the option price, upon the exercise of
any Option, or in full or partial payment of the tax withholding obligations
resulting from the exercise of any Option.

     The following table sets forth certain information concerning the grant of
Options to purchase Iron Mountain Common Stock to the Named Executive Officers
in the year ended December 31, 1996.


                                       69

<PAGE>


                        Option Grants in Last Fiscal Year

<TABLE>
<CAPTION>


                                                Percent of                                        Potential Realizable
                                                  Total                                             Value at Assumed
                               Number of         Options                                          Annual Rates of Stock
                               Securities      Granted to                                           Appreciation for
                               Underlying       Employees       Exercise                            Option Terms (1)
                                Options         in Fiscal       Price Per      Expiration
Name                            Granted         Year 1996        (Share)          Date          5%($)          10%($)
- ----                            -------         ---------        -------          ----          -----          ------
<S>                              <C>              <C>            <C>            <C>             <C>            <C>

David S.  Wendell                40,000           10.3%          $15.375        4/8/2006        $386,600       $980,200
  President and Chief
  Operating Officer
Robert P.  Swift                 15,000            3.9%          $15.375        4/8/2006        $144,925       $367,575
  Executive Vice
  President
Kenneth F. Radtke, Jr.           20,000            5.1%          $15.375        4/8/2006        $193,300       $490,100
  Executive Vice
  President
- --------------
</TABLE>

(1)  Potential Realizable Value is based on the assumed growth rates for an
     assumed ten-year option term. 5% annual growth results in an Iron Mountain
     Common Stock price per share of $25.04 and 10% results in an Iron Mountain
     Common Stock price per share of $39.88 respectively, for such term. The
     actual value, if any, an executive officer may realize will depend on the
     excess of the market price of the Iron Mountain Common Stock over the
     exercise price on the date the option is exercised, so that there is no
     assurance the value realized by an executive will be at or near the amounts
     reflected in this table.

         The following table sets forth certain information with respect to the
unexercised Options to purchase Iron Mountain Common Stock to the Named
Executive Officers. None of such individuals exercised any Options during the
year ended December 31, 1996.

                          Fiscal Year End Option Values

<TABLE>
<CAPTION>
                                                                                             Value of Unexercised
                                                       Number of Unexercised               In-the-Money-Options at
                                                    Options at December 31, 1996            December 31, 1996 (1)
                                                    ----------------------------            -----------------
Name                                               Exercisable       Unexercisable        Exercisable         Unexercisable
                                                   -----------       -------------        -----------         -------------
<S>                                                  <C>                 <C>               <C>                <C>

David S.  Wendell .........................          79,960              84,280            $1,900,329         $1,307,850
  President and Chief Operating Officer
Robert P.  Swift...........................          15,420              26,952            $  366,472         $  429,122
  Executive Vice President
Kenneth F. Radtke, Jr......................             795              25,110            $   14,048         $  380,966
  Executive Vice President
- ----------
</TABLE>

(1)  Based on a year end value of $30.25 per share, less the exercise price.


Certain Transactions

     In 1993, in connection with the employment of David S. Wendell, Iron
Mountain made demand loans to Mr. Wendell in an aggregate principal amount of
$70,000 in connection with Mr. Wendell's purchase of a home. The loans bore
interest at a rate equal to Iron Mountain's cost to borrow such funds and were
secured by a second mortgage on the home. The final payments on these loans were
made in March 1997.


                                       70

<PAGE>


     See "--Executive Compensation--Compensation Committee Interlocks and
Insider Participation" for a discussion of: (i) certain payments to Vincent J.
Ryan and Schooner for consulting services; (ii) a lease between a partnership
affiliated with Messrs. Doggett, Reese and Ryan and a subsidiary of Iron
Mountain; (iii) the familial relationship between Vincent J. Ryan, an Iron
Mountain Director, and T. Anthony Ryan, an Iron Mountain officer; (iv) a lease
between Schooner and Iron Mountain; (v) certain indebtedness of Iron Mountain to
Schooner which was repaid with a portion of the proceeds of the Note Offering;
and (vi) Schooner's prior participation in Iron Mountain's 401(k) plan and
certain other employee benefit plans.


                     PRINCIPAL STOCKHOLDERS OF IRON MOUNTAIN


     The following table sets forth certain information known to Iron Mountain
with respect to beneficial ownership of the Iron Mountain Common Stock by (i)
each stockholder known by Iron Mountain to be the beneficial owner of more than
five percent of the Iron Mountain Common Stock, (ii) each Director, including
each nominee for director, (iii) each Named Executive Officer and (iv) all
executive officers and Directors of Iron Mountain as a group. Such information
is presented as of March 28, 1997. The number of shares assumed to be issued in
the Merger is 1,751,228, based on a Determination Price of $28.50 (the mid-point
of the range between the floor price of $26.00 and the ceiling price of $31.00)
and assuming all Exercisable Options are exercised prior to the Effective Time.

<TABLE>
<CAPTION>

                                                                                          Amount of Beneficial
                                              Amount of Beneficial Ownership                    Ownership
                                                    Before the Merger                       After the Merger
                                         ------------------------------------------------------------------------------
                                                                          Percent                               Percent
Name(1)                                          Shares                    Owned          Shares                 Owned
- ----                                             ------                    -----          ------                -------
<S>                                              <C>                       <C>            <C>                   <C>

Directors and Executive Officers
C. Richard Reese(2).....................          1,127,503                 11.6%         1,127,503              9.9%
David S.  Wendell(3)....................             99,822                  1.0%            99,822                 *
Eugene B.  Doggett(4)...................            169,745                  1.8%           169,745              1.5%
Kenneth F. Radtke, Jr.(5)...............              1,180                     *             1,180                 *
Robert P.  Swift(6).....................             20,895                     *            20,895                 *
Constantin R.  Boden(7).................             20,510                     *            20,510                 *
Arthur D.  Little(8)....................             50,260                     *            50,260                 *
Vincent J.  Ryan(9).....................          3,445,750                 35.6%         3,445,750             30.4%
B. Thomas Golisano(10)..................                  0                     *           976,291              8.5%
All Directors and executive
 officers as a group (9 persons) (11)...          4,243,909                 43.3%         5,220,200             45.2%

Five Percent Stockholders:
Schooner Capital Corporation(12)........          1,909,384                 19.7%         1,909,384             16.8%
William Blair & Company, L.L.C..........            811,499                  8.4%           811,499              7.2%
John Hancock Advisers, Inc..............            500,000                  5.2%           500,000              4.4%
- ----------------------
</TABLE>

*    Less than 1% (1) Except as otherwise indicated, the persons named in the
     table above have sole voting and investment power with respect to all
     shares of Iron Mountain Common Stock shown as beneficially owned by them.

(2)  Mr. Reese is a director and Chairman of the Board and Chief Executive
     Officer of Iron Mountain. Includes 13,450 shares of Iron Mountain Common
     Stock held by trusts for the benefit of Mr. Reese's children, as to which
     Mr. Reese disclaims beneficial ownership. Also includes 668,166 shares of
     Iron Mountain Common Stock as to which Mr. Reese shares beneficial
     ownership with Schooner as a result of a 1988 deferred compensation
     arrangement, as amended, between Schooner and Mr. Reese relating to Mr.
     Reese's former services as President of Schooner. Pursuant to such
     arrangement, upon the earlier to occur of (i) Schooner's sale or exchange
     of substantially all of the shares of Iron Mountain Common Stock held by
     Schooner or (ii) the cessation of Mr. Reese's employment with Iron
     Mountain, Schooner is required

                                       71

<PAGE>



     to transfer such shares of Iron Mountain Common Stock to Mr. Reese or remit
     to Mr. Reese cash in an amount equal to the then current fair market value
     of such shares of Iron Mountain Common Stock. Schooner has agreed to vote
     the shares of Iron Mountain Common Stock subject to such arrangement at the
     direction of Mr. Reese. Mr. Reese's address is c/o Iron Mountain
     Incorporated, 745 Atlantic Avenue, Boston, Massachusetts 02111.

(3)  Mr. Wendell is a director and President and Chief Operating Officer of Iron
     Mountain. Includes 95,967 shares that Mr. Wendell has the right to acquire
     pursuant to currently exercisable options. See "Management of Iron
     Mountain--Executive Compensation." Mr. Wendell's address is c/o Iron
     Mountain Incorporated, 745 Atlantic Avenue, Boston, Massachusetts 02111.

(4)  Mr. Doggett is a director and Executive Vice President and Chief Financial
     Officer of Iron Mountain. Mr. Doggett has announced his intention to retire
     as Chief Financial Officer as of May 29, 1997. See "Management of Iron
     Mountain--Directors, Executive Officers and Certain Other
     Officers--Directors and Executive Officers." Includes 29,550 shares of Iron
     Mountain Common Stock as to which Mr. Doggett shares beneficial ownership
     with Schooner as a result of a 1988 deferred compensation arrangement, as
     amended, between Schooner and Mr. Doggett relating to Mr. Doggett's former
     services as Chief Financial Officer of Schooner. Pursuant to such
     arrangement, upon the earlier to occur of (i) Schooner's sale or exchange
     of substantially all of the shares of Iron Mountain Common Stock held by
     Schooner or (ii) the cessation of Mr. Doggett's employment with Iron
     Mountain, Schooner is required to transfer such shares of Iron Mountain
     Common Stock to Mr. Doggett or remit to Mr. Doggett cash in an amount equal
     to the then current fair market value of such shares of Iron Mountain
     Common Stock. Schooner has agreed to vote the shares of Iron Mountain
     Common Stock subject to such arrangement at the direction of Mr. Doggett.
     Mr. Doggett's address is c/o Iron Mountain Incorporated, 745 Atlantic
     Avenue, Boston, Massachusetts 02111.

(5)  Mr. Radtke is an Executive Vice President of Iron Mountain. Consists of
     shares that Mr. Radtke has the right to acquire pursuant to currently
     exercisable options. See "Management of Iron Mountain--Executive
     Compensation." Mr. Radtke's address is c/o Iron Mountain Incorporated, 745
     Atlantic Avenue, Boston, Massachusetts 02111.

(6)  Mr. Swift is an Executive Vice President of Iron Mountain. Consists of
     shares that Mr. Swift has the right to acquire pursuant to currently
     exercisable options. See "Management of Iron Mountain--Executive
     Compensation." Mr. Swift's address is c/o Iron Mountain Incorporated, 1340
     East 6th Street, Los Angeles, California 90021.

(7)  Mr. Boden is a director of Iron Mountain. Mr. Boden's address is c/o Boston
     Capital Ventures, 45 School Street, Boston, Massachusetts 02110.

(8)  Mr. Little is a director of Iron Mountain. Includes 49,365 shares held by
     The Little Family Trust, as to which Mr. Little disclaims beneficial
     ownership. Mr. Little's address is c/o The Little Investment Company, 33
     Broad Street, Boston, Massachusetts 02109.

(9)  Mr. Ryan is a director of Iron Mountain. Mr. Ryan holds 1,536,366 shares of
     Iron Mountain Common Stock. The remaining shares of Iron Mountain Common
     Stock listed as being beneficially owned by Mr. Ryan are held by Schooner,
     as to which Mr. Ryan has sole voting power and investment power as the
     Chairman of the Board and principal stockholder of Schooner. Mr. Ryan's
     address is c/o Schooner Capital Corporation, 745 Atlantic Avenue, Boston,
     Massachusetts 02111. See footnote (12) regarding shares held by Schooner.

(10) Mr. Golisano is the Chairman of the Board and a principal stockholder of
     Safesite. In accordance with the terms of the Merger Agreement, upon the
     consummation of the Merger, Mr. Golisano will be appointed to serve as a
     Class A Director of Iron Mountain. Assumes that Mr. Golisano exercised all
     of his Exercisable Options prior to the Closing Date (and received 2,768
     shares of Iron Mountain Common Stock therefor upon the consummation of the
     Merger).

(11) Includes 124,002 shares that directors and executive officers have the
     right to acquire pursuant to currently exercisable options and, with
     respect to the amount of beneficial ownership after the Merger, assumes Mr.
     Golisano, who will be appointed to serve as a Class A Director of Iron
     Mountain following the Merger, exercised all of his Exercisable Options
     prior to the Closing Date.

(12) Mr. Ryan is the Chairman of the Board and the principal stockholder of
     Schooner and, accordingly has sole voting and investment power with respect
     to the shares of Iron Mountain Common Stock held by Schooner. Includes
     668,166 shares of Iron Mountain Common Stock as to which Schooner shares
     beneficial ownership with Mr. Reese as described in footnote (2). Also
     includes 29,550 shares of Iron Mountain Common Stock as to which Schooner
     shares beneficial ownership with Mr. Doggett as described in footnote (4).
     Schooner has agreed to vote the shares of Iron Mountain Common Stock
     subject to such arrangements at the direction of Mr. Reese or Mr. Doggett,
     as the case may be.

                                       72

<PAGE>

             PRO FORMA CONDENSED CONSOLIDATED FINANCIAL INFORMATION

         The accompanying unaudited Pro Forma Condensed Consolidated Balance
Sheet has been prepared based upon the historical consolidated balance sheet of
Iron Mountain as of December 31, 1996 and the balance sheets as of December 31,
1996 of the Recent Acquisitions consummated in 1997 (the "1997 Acquisitions")
and Safesite, and gives effect to the 1997 Acquisitions and the Merger, as if
each had occurred as of December 31, 1996. The accompanying unaudited Pro Forma
Condensed Consolidated Statement of Operations for the year ended December 31,
1996 gives effect to each of the above transactions and to (i) the Recent
Acquisitions consummated in 1996 (the "1996 Acquisitions"), (ii) the February
1996 Initial Public Offering, (iii) the October 1996 Note Offering and (iv) the
closing of the Credit Agreement, as if each had occurred as of January 1, 1996.
Pro forma adjustments are described in the accompanying notes.

         The following unaudited Pro Forma Condensed Consolidated Statement of
Operations is not necessarily indicative of the actual results of operations
that would have been reported if the events described above had occurred as of
January 1, 1996, nor do they purport to indicate the results of Iron Mountain's
future operations. Furthermore, the pro forma results do not give effect to all
cost savings or incremental costs that may occur as a result of the integration
and consolidation of the Recent Acquisitions and the Merger. In the opinion of
management, all adjustments necessary to present fairly such pro forma financial
statements have been made.

         The pro forma condensed consolidated financial information should be
read in conjunction with "Description of Iron Mountain - Management's Discussion
and Analysis of Financial Condition and Results of Operations" and with Iron
Mountain's Consolidated Financial Statements and the Notes thereto included
elsewhere in this Prospectus.





                                       73
<PAGE>

                           IRON MOUNTAIN INCORPORATED

            UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                            AS OF DECEMBER 31, 1996

                                 (In thousands)

<TABLE>
<CAPTION>

                                                                                                                     Pro Forma
                                                           Pro Forma (1)       Safesite                              As Adjusted
                                                          Iron Mountain       Historical         Adjustments        Iron Mountain
                                                          -------------       ----------         -----------        -------------
<S>                                                          <C>                 <C>              <C>               <C>
Assets
Current Assets  . . . . . . . . . . . . . . . . . . .        $ 35,850            $2,828          $      -           $   38,678
Property, Plant and Equipment, net  . . . . . . . . .         129,426             3,971             2,400  (A)         135,797
Goodwill, net   . . . . . . . . . . . . . . . . . . .         126,279                 -            55,962  (A)         182,241
Other Long-term Assets  . . . . . . . . . . . . . . .          21,774               265               (61) (A)          21,978
                                                           ----------         ---------         ---------           ----------
   Total Assets   . . . . . . . . . . . . . . . . . .        $313,329            $7,064           $58,301           $  378,694
                                                           ==========         =========         =========           ==========

Liabilities and Stockholders' Equity
Current Liabilities  . . . . . . . . . . . . . . . . .       $ 27,145            $2,034           $ 1,150  (B)       $  30,329
Long-term Debt, net of current portion   . . . . . . .        215,552                 -            13,231  (B)         228,783
Other Long-term Liabilities  . . . . . . . . . . . . .          6,576                 -                 -                6,576
Deferred Rent  . . . . . . . . . . . . . . . . . . . .          7,651               463              (463) (B)           7,651
Deferred Income Taxes  . . . . . . . . . . . . . . . .          4,021                 -                 -                4,021
Stockholders' Equity   . . . . . . . . . . . . . . . .         52,384             4,567            44,383  (B)         101,334
                                                           ----------         ---------          ---------          ----------
   Total Liabilities and Stockholders' Equity  . . . .       $313,329            $7,064           $58,301             $378,694
                                                           ==========         =========          =========          ==========

</TABLE>


(1) See Schedule A for detail of the pro forma effect of the 1997 Acquisitions.











         The accompanying notes are an integral part of these pro forma
                             financial statements.




                                       74

<PAGE>

                           IRON MOUNTAIN INCORPORATED

       UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1996

                     (In thousands, except per share data)


<TABLE>
<CAPTION>

                                                                                                                   Pro Forma
                                                  Pro Forma (1)           Safesite                                As Adjusted
                                                  Iron Mountain          Historical           Adjustments        Iron Mountain
                                                  -------------          ----------           -----------        -------------
<S>                                                 <C>                   <C>                   <C>                   <C>
Revenues:
  Storage  . . . . . . . . . . . . . . . . .        $ 102,202             $ 8,300              $   -                 $ 110,502
  Service and Storage Material Sales   . . .           63,899              10,709                  -                    74,608
                                                  -----------           ---------           -----------           ------------
      Total Revenues   . . . . . . . . . . .          166,101              19,009                  -                   185,110
                                                  -----------           ---------           -----------           ------------
Operating Expenses:
  Cost of Sales (Excluding Depreciation) . .           82,980               9,464               (760) (C)               91,684
  Selling, General and Administrative                  39,284               7,587               (899) (D)               45,972
  Depreciation and Amortization    . . . . .           22,577                 799              1,890  (E)               25,266
                                                  -----------           ---------           -----------           ------------
      Total Operating Expenses   . . . . . .          144,841              17,850                231                   162,922
                                                  -----------           ---------           -----------           ------------
Operating Income   . . . . . . . . . . . . .           21,260               1,159               (231)                   22,188
Interest Expense   . . . . . . . . . . . . .           23,359                  34              1,089 (F)                24,482
                                                  -----------           ---------           -----------           ------------
Income (Loss) Before Provision for
  Income Taxes   . . . . . . . . . . . . . .           (2,099)              1,125             (1,320)                   (2,294)
Provision for Income Taxes   . . . . . . . .              291                 125                693 (G)                 1,109
                                                  -----------           ---------           -----------           ------------
Income (Loss) Before Extraordinary Charge            $ (2,390)            $ 1,000           $ (2,013)                 $ (3,403)
                                                  ===========           =========           ===========           ============
Loss Before Extraordinary Charge per
  Common Share   . . . . . . . . . . . . . .          $ (0.24)                                                         $ (0.29)
Weighted Average Common and Common
  Equivalent Shares    . . . . . . . . . . .           10,129                                  1,680 (H)                11,809

Other Data:
  EBITDA   . . . . . . . . . . . . . . . . .         $ 43,837             $ 1,958            $ 1,659                  $ 47,454

</TABLE>



(1) See Schedule B for detail of the pro forma effect of the Recent
Acquisitions, the Initial Public Offering, the Note Offering and closing of the
Credit Agreement.








         The accompanying notes are an integral part of these pro forma
                             financial statements.




                                       75


<PAGE>

                                                                      SCHEDULE A


                           IRON MOUNTAIN INCORPORATED

            UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                            AS OF DECEMBER 31, 1996

                                 (In thousands)

<TABLE>
<CAPTION>
                                                            Iron
                                                          Mountain               1997                                   Pro Forma
                                                         Historical          Acquisitions            Adjustments       Iron Mountain
                                                         ----------          ------------            -----------       -------------
<S>                                                     <C>                    <C>                    <C>                <C>
Assets
Current Assets   . . . . . . . . . . . . . . . .        $  34,788              $ 2,236               $ (1,174) (A)      $  35,850
Property, Plant and Equipment, net   . . . . . .          118,349                6,427                  4,650  (A)        129,426
Goodwill, net    . . . . . . . . . . . . . . . .          109,363                  328                 16,588  (A)        126,279
Other Long-term Assets . . . . . . . . . . . . .           19,299                  111                  2,364  (A)         21,774
                                                     ------------           ----------            -----------          ----------
  Total Assets   . . . . . . . . . . . . . . . .        $ 281,799              $ 9,102               $ 22,428           $ 313,329
                                                     ============           ==========            ===========          ==========

Liabilities and Stockholders' Equity
Current Liabilities  . . . . . . . . . . . . . .        $  26,830              $ 1,621               $ (1,306) (B)      $ 27,145
Long-term Debt, net of current portion   . . . .          184,337                3,895                 27,320  (B)       215,552
Other Long-term Liabilities  . . . . . . . . . .            6,576                  -                       -               6,576
Deferred Rent  . . . . . . . . . . . . . . . . .            7,651                  -                       -               7,651
Deferred Income Taxes  . . . . . . . . . . . . .            4,021                  -                       -               4,021
Stockholders' Equity   . . . . . . . . . . . . .           52,384                3,586                 (3,586) (B)        52,384
                                                     ------------           ----------            -----------          ----------
  Total Liabilities and Stockholders' Equity . .        $ 281,799              $ 9,102               $ 22,428           $313,329
                                                     ============           ==========            ===========          ==========

</TABLE>


















         The accompanying notes are an integral part of these pro forma
                             financial statements.



                                       76

<PAGE>

                                                                      SCHEDULE B

                           IRON MOUNTAIN INCORPORATED

       UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1996

                     (In thousands, except per share data)


<TABLE>
<CAPTION>

                                                        Iron
                                                      Mountain               Recent                                Pro Forma
                                                     Historical           Acquisitions      Adjustments          Iron Mountain
                                                     ----------           ------------      -----------          -------------
<S>                                                  <C>                   <C>                 <C>                 <C> 
Revenues:
  Storage  . . . . . . . . . . . . . . . . .         $ 85,826              $ 16,376            $   -               $ 102,202
  Service and Storage Material Sales . . . .           52,892                11,007                -                  63,899
                                                  -----------          ------------         -----------        -------------
      Total Revenues   . . . . . . . . . . .          138,718                27,383                -                 166,101
                                                  -----------          ------------         -----------        -------------
 Operating Expenses:
  Cost of Sales (Excluding Depreciation) . .           70,747                13,033               (800) (C)           82,980
  Selling, General and Administrative  . . .           34,342                 9,555             (4,613) (D)           39,284
  Depreciation and Amortization  . . . . . .           16,936                 1,953              3,688  (E)           22,577
                                                  -----------          ------------         -----------        -------------
      Total Operating Expenses . . . . . . .          122,025                24,541             (1,725)              144,841
                                                  -----------          ------------         -----------        -------------
Operating Income   . . . . . . . . . . . . .           16,693                 2,842              1,725                21,260
Interest Expense   . . . . . . . . . . . . .           14,901                   889              7,569  (F)           23,359
                                                  -----------          ------------         -----------        -------------
Income (Loss) Before Provision (Benefit)
   for Income Taxes  . . . . . . . . . . . .            1,792                 1,953             (5,844)               (2,099)
Provision for Income Taxes   . . . . . . . .            1,435                   162             (1,306) (G)              291
                                                  -----------          ------------         -----------        -------------
Income (Loss) Before Extraordinary Charge. .            $ 357               $ 1,791           $ (4,538)             $ (2,390)
                                                  ===========          ============         ===========        =============
Income (Loss) Before Extraordinary Charge per
  Common and Common Equivalent Share  . . .            $ 0.01 (1)                                                   $  (0.24)
Weighted Average Common and Common
  Equivalent Shares Outstanding  . . . . . .           10,137                                      (8) (H)            10,129

Other Data:
  EBITDA  . . . . . . . . . . . . . . . . .          $ 33,629               $ 4,795           $ 5,413               $ 43,837

</TABLE>


  (1)  After accretion related to the Warrant of $0.03 per share.







         The accompanying notes are an integral part of these pro forma
                             financial statements.



                                       77

<PAGE>



                           IRON MOUNTAIN INCORPORATED

    NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Overview

          In January 1996, Iron Mountain acquired Nashville Vault Company, Ltd.
("Nashville Vault") and Florida Data Bank, Inc. ("FDB"). In February 1996, Iron
Mountain acquired DataVault Corporation. In March 1996, Iron Mountain acquired
Data Storage Systems, Inc. In April 1996, Iron Mountain acquired Brambles CRC,
Inc. ("CRC"). In May 1996, Iron Mountain acquired the records management
business of Output Technologies Central Region, Inc. In July 1996, Iron Mountain
acquired the records management business of The Fortress Corporation. In August
1996, Iron Mountain acquired Data Archive Services, Inc. and Data Archive
Services of Miami, Inc. (collectively, "DAS") and DKA Industries, Inc. (d/b/a
Systems Record Storage). In September 1996, Iron Mountain acquired International
Record Storage and Retrieval Service, Inc. and Security Archives Corporation. In
October 1996, Iron Mountain acquired Data Storage Company, Inc. and Dial-A-File
Storage, Inc. In November 1996, Iron Mountain acquired Mohawk Business Record
Storage, Inc., Magnetic Archives, Inc. and Deliverex of Broward. The aggregate
purchase price of the 1996 Acquisitions was $68.5 million (not including
contingent payments of up to $4.0 million based upon the achievement of certain
revenue targets during 1997 and 1998).

         In January 1997, Iron Mountain acquired Security Archives II, Inc. and
Security Archives of MSP, Inc. In February 1997, Iron Mountain acquired the
records management business of Wellington Financial Services, Inc. (d/b/a
Michigan Data Storage) and Data Recovery Services, Inc. In March 1997, Iron
Mountain acquired CBD Security Archives, Inc. In April 1997, Iron Mountain
acquired Chicago Data Destruction Corporation and Critical Files Security, Inc.
The aggregate purchase price of the 1997 Acquisitions was $32.5 million (not
including contingent payments of up to $0.8 million based upon the achievement
of certain revenue targets during 1997 and 1998).

         The pro forma financial statements do not include adjustments related
to the acquisitions of Data Storage Company, Inc., Dial-A-File Storage, Inc.,
Magnetic Archives, Inc., Deliverex of Broward, Data Recovery Services Inc., and
Critical Files Security, Inc. (the "Excluded Acquisitions") as the impact of
such acquisitions would not be material to the accompanying pro forma financial
statements. The Excluded Acquisitions, in the aggregate, represent annual
revenues of approximately $3 million.

         In February 1997, Iron Mountain entered into an agreement to purchase
the stock of Safesite for approximately $62 million. The purchase price consists
of Iron Mountain Common Stock and options to acquire shares of Common Stock
valued at approximately $50 million, and approximately $12 million in cash. The
number of shares of Common Stock will be based on the average market price for
the 20 trading days ending three trading days before the closing, subject to a
floor of $26.00 and a ceiling of $31.00. If such average price is less than
$26.00 or greater than $31.00, the number of shares of Common Stock and options
to acquire Common Stock will be based on a price of $26.00 or $31.00, as the
case may be. In such case, the number of shares of Iron Mountain Common Stock
and exercisable stock options issued as a result of the Merger would equal
1,919,615 or 1,610,000. The impact of a $0.25 change, above or below the collar,
will result in a $0.5 million increase and a $0.4 million decrease,
respectively, in the purchase price. The goodwill associated with the Merger
will be nondeductible for income tax purposes.



                                       78

<PAGE>

         The consummation of the Merger is subject to various conditions, and no
assurance can be given that the Merger will be completed. All of the Recent
Acquisitions have been, and the Merger, if consummated, will be, accounted for
as purchases.

         The accompanying unaudited pro forma condensed consolidated financial
statements reflects the following as though each had occurred on January 1,
1996: (i) the Initial Public Offering; (ii) the Note Offering; (iii) the closing
of the Credit Agreement; (iv) the Recent Acquisitions; and (v) the Merger
(collectively, "the Transactions").

Balance Sheet

         The aggregate consideration paid or to be paid for the Recent
Acquisitions and the Merger is approximately $113 million in cash and $50
million in stock (not including up to $4.8 million of contingent payments based
upon the achievement of certain revenue targets during 1997 and 1998). The
excess of the purchase price over the book value of the net assets acquired for
each of the acquisitions has been allocated to tangible and intangible assets,
based on Iron Mountain's estimate of the fair value of the net assets acquired.
The allocations of the purchase price as illustrated below may change upon final
appraisal of the fair value of the net assets acquired. 

<TABLE>
<CAPTION>

1996 Acquisitions:                                                              (In millions)
<S>                                                                               <C>                <C>
     Book value of net assets acquired  ........................................  $  4.9
     Allocation of purchase price in excess of acquired assets:
       Property, Plant and Equipment (Fair Value Adjustment)  ..................    12.0
       Other Long-term Assets (Covenants not to Compete)  ......................     1.5
       Current Liabilities (Relocation and Other Reserves)  ....................    (5.5)
       Deferred Rent (Unfavorable Lease Liability)  ............................    (0.2)
       Goodwill  ...............................................................    55.8
                                                                                  ------
     Purchase Price of 1996 Acquisitions                                                             $    68.5
1997 Acquisitions and the Merger:
   Book value of net assets acquired  ..........................................  $   8.3
     Allocation of purchase price in excess of acquired assets:
       Property, Plant and Equipment (Fair Value Adjustment)  ..................      7.1
       Other Long-term Assets (Covenants not to Compete)  ......................      2.5
       Current Liabilities (Relocation and Other Reserves)  ....................     (1.2)
       Goodwill  ...............................................................     77.8
                                                                                  ------
     Purchase Price of 1997 Acquisitions and the Merger ........................                          94.5
                                                                                                      --------
     Total Purchase Price of the Recent Acquisitions and the Merger ..........                        $  163.0
                                                                                                      ========
</TABLE>


         The 1996 Acquisitions were financed with long-term debt and proceeds
from the Initial Public Offering and the Note Offering. The 1997 Acquisitions
were financed under the Credit Agreement. The Merger will be funded with Iron
Mountain Common Stock and options to purchase Common Stock and borrowings under
the Credit Agreement. See "Description of Iron Mountain - Recent and Pending
Acquisitions" and "--Management's Discussion and Analysis of Financial 
Condition and Results of Operations."



                                       79

<PAGE>

         The accompanying pro forma condensed consolidated balance sheet as of
December 31, 1996 has been prepared as if the Transactions (except for the
Excluded Acquisitions) had all been completed as of December 31, 1996 and
reflects the following adjustments:

   (A) The pro forma adjustments to Assets consist of the following (in
millions):
<TABLE>
<CAPTION>
                                                                                  Property                         Other
                                                                    Current      Plant and                       Long-term
                                                                    Assets       Equipment        Goodwill         Assets
<S>                                                               <C>            <C>             <C>             <C>
1997 Acquisition Entries:
Reverse assets of acquired companies not purchased  ...........   $   (1.3)      $    -          $   (0.3)       $    -
Record estimated fair value of assets of acquired companies  ..        0.1           4.7              -               -
Record increase in intangible assets equal to the excess of
   purchase price over fair value of net assets acquired  .....         -             -              16.9            2.4
                                                                  ----------     ----------      ----------      -------
       Total Acquisition Entries  .............................   $   (1.2)      $   4.7         $   16.6        $   2.4
                                                                  ==========     ==========      ==========      =======

Safesite Entries:
Record estimated fair value of assets  ........................   $    -        $   2.4        $     -         $   (0.1)
Record increase in intangible assets equal to the excess of
   purchase price over fair value of net assets acquired  .....        -             -               56.0            -
                                                                   ---------     ----------      ----------      -------
       Total Safesite Entries  ................................   $    -        $   2.4         $    56.0        $  (0.1)
                                                                   =========     ==========      ==========      ========
</TABLE>

(B) The pro forma adjustments to Liabilities and Stockholders' Equity consist of
the following (in millions):

<TABLE>
<CAPTION>

                                                                  Current      Long-term     Deferred     Stockholders'
                                                                Liabilities       Debt         Rent          Equity
<S>                                                             <C>            <C>           <C>             <C>
1997 Acquisition Entries:
Reverse liabilities and equity not assumed  ..................  $   (1.3)      $   (3.6)     $   -           $   (3.6)
Record debt to finance 1997 Acquisitions  ....................       -             30.9          -                -
                                                                ----------     ---------     ---------       --------
       Total Acquisition Entries  ............................  $   (1.3)      $   27.3      $   -           $   (3.6)
                                                                ==========     =========     =========       =========

Safesite Entries:
Record estimated fair value of liabilities  ..................  $    -         $    -        $  (0.5)        $    -
Reverse Safesite equity  .....................................       -              -            -               (4.6)
Record retirement of short-term debt  ........................      (0.2)           -            -                -
Record restructuring reserves  ...............................       1.4            -            -                -
Record debt to finance the Merger  ...........................       -             13.2          -                -
Record equity to finance the Merger, net of  expenses  .......       -              -            -               49.0
                                                                ----------     ---------     ---------       --------
       Total Safesite Merger Entries  ........................  $    1.2       $   13.2      $  (0.5)         $  44.4
                                                                ==========     =========     =========       ========
</TABLE>



                                       80

<PAGE>


   Statements of Operations

         Safesite and all of the Recent Acquisitions, except FDB, CRC, DAS and
CBD, have a December 31 fiscal year end. CRC's and CBD's fiscal year end is June
30, DAS's fiscal year end is May 31 and FDB's fiscal year end is August 31.
Accordingly, CRC's, DAS's, FDB's and CBD's results of operations were
calendarized to the twelve months ended December 31, 1996.

         The accompanying pro forma condensed consolidated statement of
operations for the year ended December 31, 1996 has been prepared as if the
Transactions had occurred on January 1, 1996 and reflect the following
adjustments:

          (C) Pro forma adjustments have been made to reduce cost of sales to
eliminate specific expenses that would not have been incurred had such
acquisitions occurred as of January 1, 1996. Such cost savings relate to (i) the
termination of certain employees due to the integration and consolidation of
certain acquisitions, (ii) a reduction in warehouse rent expense related to
facilities Iron Mountain will vacate upon completion of certain acquisitions,
and (iii) to adjust rent expense to reflect new or amended leases for certain
facilities of acquisitions.

          (D) Pro forma adjustments have been made to reduce selling, general
and administrative expenses to eliminate specific expenses that would not have
been incurred had such acquisitions occurred as of January 1, 1996. Such cost
savings relate to (i) the termination of certain employees due to the
integration and consolidation of certain acquisitions and (ii) the elimination
of related party expenses and management fees in excess of amounts that would
have been incurred by Iron Mountain for the services rendered. Additional cost
savings that Iron Mountain expects to realize through integration of the
acquisitions into Iron Mountain's operations have not been reflected herein.

          (E) Pro forma adjustments have been made to reflect additional
depreciation and amortization expense on the fair value of the assets acquired
and goodwill. Property and equipment are depreciated over three to 50 years,
goodwill is amortized over 25 years and covenants not-to-compete are amortized
over two to five years on a straight-line basis. Such depreciation and
amortization may change upon final appraisal of the fair market value of the net
assets acquired.



                                       81

<PAGE>


  (F) The pro forma adjustments to Interest Expense consist of the following:

<TABLE>
<CAPTION>

                                                                                   December 31,
                                                                                       1996
                                                                                  (In millions)
<S>                                                                                   <C>
Recent Acquisition Entries:
Reverse interest expense on debt not assumed  ................................       $ (0.9)
Record interest expense due to assumption of unfavorable lease liability in
   connection with the certain acquisitions  .................................          0.1

Use of Proceeds Entries:
Reverse interest expense on debt of Iron Mountain retired with proceeds of
   the Initial Public Offering, Note Offering and the closing of the Credit
   Agreement  ................................................................        (13.5)
Record interest expense related to the Senior Subordinated Notes,
   including amortization of deferred financing costs  .......................         17.3
Record interest expense related to borrowings under the Credit Agreement,
   including amortization of deferred financing cost  ........................          4.6
                                                                                     ------
       Total Acquisition and Proceeds Adjustments  ...........................       $  7.6
                                                                                     ======

Safesite Entries:
Reverse interest expense on debt retired  ....................................       $ (0.0)
Record interest expense on additional debt incurred to finance the Merger               1.1
                                                                                     ------
      Total Safesite Adjustments                                                     $  1.1
                                                                                     ======
</TABLE>

          The impact of a one-eighth of one percentage point change in the
interest rate on pro forma borrowings under the Credit Agreement for 1996 is
$0.1 million.

         (G) Pro forma adjustments have been made to adjust the provision for
income taxes to a 40% rate on pro forma income before nondeductible goodwill
amortization and other nondeductible expenses.

         (H) Pro forma adjustments have been made to adjust the pro forma
weighted average common and common equivalent shares outstanding as if the
Initial Public Offering and the Merger had occurred on January 1, 1996. For pro
forma purposes, the calculation of the number of shares and options to be issued
in the Merger is based on a Determination Price of $28.50 (the mid-point of the
collar).


                                       82

<PAGE>


                         MARKET PRICES AND DIVIDEND DATA

         Iron Mountain first issued its Common Stock to the public in February
1996. The following table sets forth the high and low sales prices on the Nasdaq
National Market.


                                                      High           Low
                                                      ----           ---
                                                          Sale Prices
                                                          -----------
1996
      First Quarter (from February 1, 1996).........  $16.25         $13.75
      Second Quarter................................   21.00          14.50
      Third Quarter.................................   30.50          20.50
      Fourth Quarter................................   32.00          28.50
   1997
      First Quarter (through March 27, 1997)........  $31.00         $21.50


     On February 19, 1997, the trading day prior to the announcement of the
Merger, the closing sales price of the Iron Mountain Common Stock, as reported
on the Nasdaq National Market was $27.125. On March 28, 1997 the closing sales
price of the Iron Mountain Common Stock, as reported on the Nasdaq National
Market, was $25.00. As of March 27, 1997, there were 9,686,732 shares of Iron
Mountain Common Stock outstanding held by 66 holders of record and 454,590
shares of Nonvoting Common Stock outstanding held by 3 holders of record. Iron
Mountain believes there are more than 1,750 beneficial owners of Iron Mountain
Common Stock.

     Iron Mountain does not currently pay dividends on the Iron Mountain Common
Stock. The Iron Mountain Board currently intends to retain future earnings, if
any, for the development of Iron Mountain's businesses and does not anticipate
paying cash dividends on the Iron Mountain Common Stock in the foreseeable
future. Future determinations by the Iron Mountain Board to pay dividends on the
Iron Mountain Common Stock would be based primarily upon the financial
condition, results of operations and business requirements of Iron Mountain.
Dividends, if any, would be payable in the sole discretion of the Iron Mountain
Board out of the funds legally available therefor. In addition, Iron Mountain is
currently restricted under the terms of the Credit Agreement and the Note
Indenture from declaring or paying cash dividends on its Common Stock. See
"Description of Iron Mountain Capital Stock."

     No established public trading market exists for the Safesite Common Stock
and, accordingly, no market price information is available with respect thereto.
Safesite has never paid cash dividends on the Safesite Common Stock. As of March
28, 1997, there were 9,111,447 shares of Safesite Common Stock outstanding and
80 holders of record.


                                       83

<PAGE>


                   DESCRIPTION OF IRON MOUNTAIN CAPITAL STOCK

     The following description of the capital stock of Iron Mountain and certain
provisions of the Iron Mountain Restated Certificate and Iron Mountain By-Laws
is a summary and is qualified in its entirety by reference to the Iron Mountain
Restated Certificate and the Iron Mountain By-Laws.

     Iron Mountain's authorized capital stock consists of 13,000,000 shares of
Iron Mountain Common Stock, 1,000,000 shares of Nonvoting Common Stock, $.01 par
value per share (the "Nonvoting Common Stock"), and 2,000,000 shares of
Preferred Stock. No shares of Preferred Stock have been issued. There were
9,686,732 shares of Iron Mountain Common Stock and 454,590 shares of Nonvoting
Common Stock issued and outstanding, held by 66 and 3 holders of record,
respectively, as of March 28, 1997. The Iron Mountain Board has voted to
recommend that the Iron Mountain stockholders approve an amendment to the Iron
Mountain Restated Certificate to increase the number of authorized shares of
Iron Mountain Common Stock from 13,000,000 to 20,000,000.


Common Stock

     The rights of holders of the Iron Mountain Common Stock and the Nonvoting
Common Stock are identical in all respects except voting and convertibility.

     Dividends. Holders of record of shares of Iron Mountain Common and
Nonvoting Common Stock on the record date fixed by the Iron Mountain Board are
entitled to receive such dividends as may be declared by the Iron Mountain Board
out of funds legally available for such purpose. No dividends may be declared or
paid in cash or property on any share of either class, however, unless
simultaneously the same dividend is declared or paid on each share of the other
class. In the case of any stock dividend, holders of each class are entitled to
receive the same percentage dividend (payable in shares of that class) as the
holders of the other class.

     Iron Mountain is currently restricted under the terms of the Credit
Agreement from paying cash dividends on the Iron Mountain Common and Nonvoting
Common Stock. Even if funds were to be available, Iron Mountain does not intend
to pay dividends in the foreseeable future.

     Voting Rights. Except as otherwise required by law, on each matter
submitted for a vote of stockholders, holders of shares of Iron Mountain Common
Stock are entitled to one vote per share and holders of Nonvoting Common Stock
are not entitled to vote.

     Under the Iron Mountain Restated Certificate, the vote of holders of at
least 80% of the voting power of all outstanding shares of capital stock
entitled to vote generally in the election of Directors, voting together as a
single class (the "Voting Power"), is required for the amendment or repeal of,
or the adoption of any provision inconsistent with, provisions of the Iron
Mountain Restated Certificate establishing a classified Board of Directors. The
vote of holders of at least 662/3% of the Voting Power is required for the
amendment or repeal of, or the adoption of any provision inconsistent with,
provisions of the Iron Mountain Restated Certificate authorizing the Preferred
Stock, Iron Mountain Common Stock and Nonvoting Common Stock or specifying the
terms of the Iron Mountain Common Stock and the Nonvoting Common Stock
(including any amendment to increase any shares of authorized capital stock).
Certain other provisions also require such a 662/3% vote. See "--DGCL and
Certain Provisions of the Iron Mountain Restated Certificate and the Iron
Mountain By-Laws." There are no cumulative voting rights in the election of the
Iron Mountain Board.

     Conversion Provisions. Shares of Nonvoting Common Stock are convertible, at
any time at the option of the holder, on a share-for-share basis into shares of
Iron Mountain Common Stock without the payment of any additional consideration;
provided that the conversion of any shares of Nonvoting Common Stock by a "bank
holding company" under the Bank Holding Company Act of 1956, as amended, or an
affiliate thereof is prohibited if the conversion of the total number of shares
of Nonvoting Common Stock held by such holder would cause it to be in violation
of such Act.


                                       84

<PAGE>


     Liquidation Rights. Upon liquidation, dissolution or winding-up of Iron
Mountain, the holders of Iron Mountain Common Stock and Nonvoting Common Stock
are entitled to share ratably (based on the number of shares held) in all assets
available for distribution after payment in full of creditors and payment in
full to any holders of Preferred Stock then outstanding of any amount required
to be paid under the terms of such Preferred Stock.

     Other Provisions. The outstanding shares of Iron Mountain Common Stock and
Nonvoting Common Stock are, and the shares of Iron Mountain Common Stock to be
issued in connection with the Merger will be, upon issuance, validly issued,
fully paid and nonassessable. In any merger, consolidation or business
combination, holders of each class will receive identical consideration, except
that in any such transaction in which shares of stock are distributed, such
shares may differ as to voting rights to the extent that voting rights now
differ between the two classes. Neither class may be subdivided, consolidated,
reclassified or otherwise changed unless, concurrently, the other class is
subdivided, consolidated, reclassified or otherwise changed in the same
proportion and in the same manner.

     The Iron Mountain Board has the power to issue shares of authorized but
unissued Iron Mountain Common Stock, Nonvoting Common Stock and Preferred Stock
without further stockholder action. The holders of Iron Mountain Common Stock
and Nonvoting Common Stock are not entitled to preemptive or subscription
rights.


Preferred Stock

     The 2,000,000 authorized and unissued shares of Preferred Stock may be
issued with such designations, preferences, limitations and relative rights as
the Iron Mountain Board may authorize including, but not limited to: (i) the
distinctive designation of each series and the number of shares that will
constitute such series; (ii) the voting rights, if any, of shares of such
series; (iii) the dividend rate on the shares of such series, any restriction,
limitation or condition upon the payment of such dividends, whether dividends
shall be cumulative, and the dates on which dividends are payable; (iv) the
prices at which, and the terms and conditions on which, the shares of such
series may be redeemed, if such shares are redeemable; (v) the purchase or
sinking fund provisions, if any, for the purchase or redemption of shares of
such series; (vi) any preferential amount payable upon shares of such series in
the event of the liquidation, dissolution or winding-up of Iron Mountain or the
distribution of its assets; and (vii) the price or rates of conversion at which,
and the terms and conditions on which the shares of such series may be converted
into other securities, if such shares are convertible. Although Iron Mountain
has no present intention to issue shares of Preferred Stock, the issuance of
Preferred Stock, or the issuance of rights to purchase such shares, could
discourage an unsolicited acquisition proposal and the rights of holders of Iron
Mountain Common Stock will be subject to, and may be adversely affected by, the
rights of holders of any Preferred Stock that may be issued in the future.


DGCL and Certain Provisions of the Iron Mountain Restated Certificate and the
Iron Mountain By-Laws

     The Iron Mountain Restated Certificate and the Iron Mountain By-Laws
contain certain provisions that could delay or make more difficult the
acquisition of Iron Mountain by means of a tender offer, a proxy contest or
otherwise. These provisions, are described below, are expected to discourage
certain types of coercive takeover practices and inadequate takeover bids and to
encourage persons seeking to acquire control of Iron Mountain first to negotiate
with Iron Mountain. Iron Mountain believes that the benefits of increased
protection of its ability to negotiate with the proponent of an unfriendly or
unsolicited proposal to acquire or restructure Iron Mountain outweigh the
disadvantages of discouraging such proposals because, among other things,
negotiations with respect to such proposals could result in an improvement of
their terms.


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     Classified Board of Directors. The Iron Mountain Restated Certificate and
the Iron Mountain By-Laws provide for a Board of Directors that is divided into
three classes of Directors, as nearly equal in number as possible, with the term
of each class expiring in a different year. See "Management of Iron
Mountain--Directors, Executive Officers and Certain Other Officers." The Iron
Mountain By-Laws provide that the number of Directors will be fixed from time to
time exclusively by the Iron Mountain Board, but shall consist of not more than
15 nor less than 3 Directors. The classified Iron Mountain Board is intended to
promote continuity and stability of Iron Mountain's management and policies
since a majority of the Directors at any given time will have prior experience
as Directors of Iron Mountain. Such continuity and stability facilitates
long-range planning of Iron Mountain's business and ensures the quality of its
business operations. The classification of Directors has the effect of making it
more difficult to change the composition of the Iron Mountain Board. At least
two annual stockholder meetings, instead of one, would be required to effect a
change in the majority control of the Iron Mountain Board, except in the event
of vacancies resulting from removal (in which case the remaining Directors will
fill the vacancies so created). See "--Removal of Directors; Filling Vacancies
on the Iron Mountain Board."

     Removal of Directors; Filling Vacancies on the Iron Mountain Board. The
Iron Mountain Restated Certificate and Iron Mountain By-Laws provide that an
Iron Mountain Director may be removed by the stockholders only for cause at any
time during such director's term of office by affirmative vote of the holders of
at least 80% of the Voting Power.

     The Iron Mountain By-Laws and the Iron Mountain Restated Certificate both
provide that a vacancy on the Iron Mountain Board, including a vacancy created
by an increase in the size of the Iron Mountain Board by the Directors, may be
filled by a majority of the remaining Directors or by a sole remaining Director,
or if no Directors remain, then by the stockholders. The Iron Mountain Restated
Certificate also provides that any Director elected by the Iron Mountain Board
to replace another Director of a given class of Directors will hold office until
the next election of such class of Directors. These provisions are to ensure
that a third party would be precluded from removing incumbent Directors and
simultaneously gaining control of the Iron Mountain Board by filling the
vacancies created by such removal with its own nominees. Moreover, even if the
holders of the outstanding Iron Mountain Common Stock were to vote to remove
Directors for cause, only the remaining Directors would have the power to fill
the vacancies created by such removal, unless such vote provided for the removal
of the entire Iron Mountain Board for cause.

     Amendment of Certain Provisions of the Iron Mountain Restated Certificate
and the Iron Mountain By-Laws. The Iron Mountain Restated Certificate and the
Iron Mountain By-Laws contain provisions requiring the affirmative vote of the
holders of at least 662/3% of the Voting Power to amend certain provisions of
the Iron Mountain Restated Certificate and the Iron Mountain By-Laws. This
supermajority voting provision also applies to (i) the provisions of the Iron
Mountain Restated Certificate authorizing Iron Mountain to release its Directors
from any liability for monetary damages as a result of any breach of their
fiduciary duties, with certain exceptions mandated by the DGCL, and (ii) the
provisions allowing for the indemnification of officers and Directors of Iron
Mountain. The Iron Mountain Restated Certificate provides that the Iron Mountain
By-Laws may be amended only by a majority of the full Iron Mountain Board or by
the stockholders holding at least 662/3% of the Voting Power. The DGCL provides
that by-laws may not be amended by a corporation's Board of Directors unless the
corporation's certificate of incorporation expressly authorizes such amendments
by the Board of Directors; the Iron Mountain Restated Certificate includes such
a provision. Under the Iron Mountain Restated Certificate, at least 80% of the
Voting Power is required to approve amendments to those provisions of the Iron
Mountain Restated Certificate or Iron Mountain By-Laws establishing a classified
Board, specifying notice requirements for stockholder nominations of Directors
or business to be brought by a stockholder before an annual meeting and limiting
the rights of stockholders to remove Directors or fill vacancies on the Iron
Mountain Board, to call special meetings or to effect actions by written
consent.

     Stockholder Actions and Meetings. Iron Mountain's Restated Certificate
provides that stockholder action may be taken only at an annual or special
meeting of stockholders and prohibits stockholders action by written consent in
lieu of a meeting. The Iron Mountain Restated Certificate and Iron Mountain
By-Laws provide that special meetings of stockholders can be called by the
Chairman of the Board of Directors, if any, or the Iron Mountain Board pursuant
to a resolution approved by a majority of the members of the Iron Mountain
Board. The business permitted to be conducted at any special meeting of
stockholders is limited to the business brought before the

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<PAGE>


meeting by the Iron Mountain Board. The Iron Mountain By-Laws set forth an
advance notice procedure with regard to the nomination, other than by or at the
direction of the Iron Mountain Board, of candidates for election as directors
and with regard to business brought before an annual meeting of stockholders of
Iron Mountain.

     Delaware Anti-Takeover Statute. Subject to certain exceptions set forth
therein, Section 203 of the DGCL provides that a corporation shall not engage in
any business combination with any "interested stockholder" for a three-year
period following the date that such stockholder becomes an interested
stockholder unless (i) prior to such date, the board of directors of the
corporation approved either the business combination or the transaction that
resulted in the stockholder becoming an interested stockholder, (ii) upon
consummation of the transaction that resulted in the stockholder becoming an
interested stockholder, the interested stockholder owned at least 85% of the
voting stock of the corporation outstanding at the time the transaction
commenced (excluding certain shares) or (iii) on or subsequent to such date, the
business combination is approved by the board of directors of the corporation
and by the affirmative vote of at least 662/3% of the outstanding voting stock
which is not owned by the interested stockholder. Except as specified therein,
an interested stockholder is defined to mean any person that (a) is the owner of
15% or more of the outstanding voting stock of the corporation or (b) is an
affiliate or associate of the corporation and was the owner of 15% or more of
the outstanding voting stock of the corporation at any time within three years
immediately prior to the relevant date, or any affiliate or associate of such
person referred to in (a) or (b) of this sentence. Under certain circumstances,
Section 203 of the DGCL makes it more difficult for an interested stockholder to
effect various business combinations with a corporation for a three-year period,
although the stockholders may, by adopting an amendment to the corporation's
certificate of incorporation or by-laws, elect not to be governed by this
section, effective twelve months after adoption. The Iron Mountain Restated
Certificate and the Iron Mountain By-Laws do not exclude Iron Mountain from the
restrictions imposed under Section 203 of the DGCL. It is anticipated that the
provisions of Section 203 of the DGCL may encourage companies interested in
acquiring Iron Mountain to negotiate in advance with the Iron Mountain Board.


Transfer Agent and Registrar

     The Transfer Agent and Registrar for the Iron Mountain Common Stock is The
First National Bank of Boston, 150 Royall Street, Canton, Massachusetts 02021
(telephone number (617) 575-2000).


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<PAGE>


                             DESCRIPTION OF SAFESITE

History

     Safesite was founded by Golisano in June 1986 when he purchased a small
records retention business in Rochester, New York. Several months later he
joined with Wayman to establish a Boston-area branch and pursue expansion.
During the following thirty months, branches were established in seven
additional markets. In most cases, a separate corporation was formed in which
the local manager became a stockholder along with Wayman or Golisano. In 1989,
fourteen stockholders of eight corporations determined that consolidation into a
single company would enhance opportunities for growth and, on December 18, 1989,
Safesite was incorporated and all eight constituent corporations were merged
into it.

     Safesite currently conducts a records management business in 14 cities.
Each branch is self-contained, with its own sales staff, data processing and
storage facilities. A branch manager directs operations. Ten of these markets
overlap with Iron Mountain operations, while four represent new markets.
Safesite has a diversified base of over 7,000 customer accounts. Safesite's
principal services include hard copy storage, medical records storage, inter-
filing of medical records, computer, media storage, pickup, delivery and
destruction services and customized reporting. Safesite also sells storage
materials and provides consulting and other records-related services.

     Corporate headquarters, located in Billerica, Massachusetts, provides
central purchasing, financial controls, training and coordination to the
branches.


The Safesite Approach to the Records Storage Market; Safesite Customers

     Safesite approaches the market for records management and storage with a
full range of services. Safesite offers a free in-depth analysis of a company's
records management costs and practices. This analysis frequently results in
sales by revealing hidden costs involved in traditional records management and
highlighting economies and efficiencies in the Safesite approach.

     Safesite's customer base is diversified in terms of revenue and industry
concentration. Safesite has over 7,000 customer accounts. Safesite tracks
customer accounts, which are based on invoices. Accordingly, depending on how
invoices had been arranged at the request of a customer, one organization may
represent multiple customer accounts. Safesite targets smaller volume accounts
(typically less than 2,500 Cartons). Safesite also has a concentration in
medical records storage customers.

     Safesite services accounts of all sizes, from small businesses and
professional groups to Fortune 500 companies. No account or related set of
accounts currently generates more than seven percent of Safesite's revenues. In
certain branches one or a few customers may account for a substantial portion of
the revenue. These generally tend to be hospital or hospital related accounts,
the loss of which could adversely impact Safesite's financial condition and
results of operations.


Storage Revenues

     Safesite derives a substantial portion of its revenues from fixed periodic
(usually monthly) fees charged to customers for storage of hard copy records.
Storage revenues have grown every quarter since inception and have represented
approximately 44% of Safesite's total revenues in each of the last three years.
Once a customer places a record in storage with Safesite and until that record
is destroyed or permanently removed (for which Safesite typically receives a
service fee), Safesite receives recurring payments of fixed periodic fees
without incurring additional labor or marketing expenses or significant capital
costs. The stable and growing storage base also provides the foundation for
increases in EBITDA from service activities and sales of storage materials.

     Safesite has not experienced a reduction of its business as a result of
past general economic downturns, although there can be no assurance that this
would be the case in the future.

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<PAGE>


     Safesite's customers have on average generated additional Cartons at a
faster rate than stored Cartons have been destroyed or permanently removed.
Safesite believes the consistent growth of its storage revenues is the result of
a number of additional factors, including: (i) the trend toward increased
records retention; (ii) customer satisfaction with Safesite's services; and
(iii) the costs and inconvenience of moving storage operations in-house or to
another provider of records management services.


Safesite Services

     Safesite's records management business is composed of many services, each
of which is designed to meet a customer's requirement and is marketed and priced
as a distinct product or enhancement. The more active the storage for a customer
(i.e., the more services used), the higher the revenue from such customer.
Prices vary by location, based on competitive factors.

     "Hard Copy Storage" is the storage of paper business records. In order to
have efficient handling and storage on shelving in Safesite's facility,
customers generally use standard-sized, corrugated cardboard cartons. Hard copy
paper records are picked up, indexed and stored on shelving within Safesite's
facilities. Records can be retrieved and delivered to the customer within two
hours and are available around the clock every day.

     "Medical Records Storage" is the storage of hospital patient records in
open shelving in color-coded, terminal digit order, the same indexing system
used at the hospital. It reflects a more active records management and hence is
not required to be boxed. Because state regulations require hospitals to retain
patient records for periods ranging from 7 to 30 years, such storage imposes
large physical space requirements and concomitant labor expenses upon hospitals.
Many hospitals find it easier and more cost effective to store such records (at
least those more than two or three years old) off-site. Safesite, in essence,
becomes the hospital's remote records room, providing, in addition to storage
and retrieval, Inter-filing and Integrity Checking Service (described below),
each for an additional fee.

     "Inter-filing" is the service whereby additions to patients' records are
placed in the appropriate file by Safesite. "Integrity Checking Service" assures
the customer that the documents which are supposed to be in a particular file
are in fact there.

     "Computer Media Storage" is the storage and management of electronic media
storage devices in all forms in a specially designed vault within the Safesite
storage area. Typically of concrete and steel construction, these rooms are
humidity and temperature controlled and protected against fire by a Halon 1001
System. Access is controlled and monitored by special locks, infrared and motion
detection sensors, video cameras and alarms. Electronic media come in many forms
which are constantly changing with changes in technology. Standard containers
are required of customers in order to handle their media devices efficiently and
safely. The most common containers protect 10-1/2 inch reel tape, removable hard
disks, 3480 cartridges, floppy diskettes, optical disks, video and audio tape,
microfilm and microfiche.

     The stored computer media range from very active to totally inactive, and
most customers have some of both. The active media are those for which a
customer requests daily, weekly or monthly rotation for back-up purposes. Thus,
Safesite will retrieve a particular disk, deliver it to a customer anywhere in
the country, pickup a new back-up disk and return it to the vault for indexing
and storage until the next rotation back to such customer. Customers may also
subscribe to Safesite's "Electronic TeleVaulting Service" which performs backup
of a customer's PC network over the telephone at night after the customer's
business is closed. The vault is also used for storage of valuable or historical
documents.

     "Pickup and Delivery Services" are provided to customers with Safesite's
unmarked vans. The charges for these services vary, based on regular or special
service delivery options.

     "Destruction Services" are provided when a customer's paper documents
exceed the customer's requirement for retention (the legal or personal standards
which are determined solely by the customer). Utilizing its computerized
inventory control system, Safesite notifies each customer sixty days prior to
destruction of the identity of stored files which are eligible for destruction
in accordance with such customer's standards. The customer can

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<PAGE>


then advise Safesite whether any of the files are to be retained for a further
period. Actual removal, shredding and destruction are provided through a third
party contractor. If requested by the customer, a Safesite employee will view
the destruction and certify the fact to the customer for an additional charge.

     "Labor, Packing, Indexing and Other Services" relieve a customer of various
aspects of the record maintenance and storage tasks and are performed by
experienced, trained records specialists. Proper filing and indexing assures the
customer that its records are packed correctly and are easily accessed through
Safesite's computer system.

     Safesite will also provide customers with microfilm or microfiche service
and tape or disk restoration through third party contractors at competitive
prices. Document restoration (through freeze drying soaked records) is also
provided.

     In addition to offering its customers records management consulting,
Safesite offers contingency planning assistance and disaster recovery services.

     A special service offered by Safesite is relocation of media libraries
where, on a test or permanent basis, a customers's entire media library is moved
by secure, temperature controlled vans to a new site. When distance and time are
important, Safesite's "Silver Bullet Service" provides jet aircraft for the
relocation of media libraries.

     Safesite also offers escrow services for customers who need a secure third
party location for source codes and similar information related to acquired
software licenses.

     Safesite offers its customers a variety of supplies related to their
storage needs. Archival supplies are principally boxes of various dimensions to
hold customer paper records. Vault supplies consist principally of containers
for the various computer media devices stored. Safesite also offers customers
shelving for on-site storage.


Inventory Control/Security

     Safesite uses a comprehensive computerized inventory, activity and invoice
reporting system, all based on a PC computer at each branch. Each carton or
media container is indexed and, if requested by the customer, each file within
the carton or tape within the container is also indexed. The customer is
provided monthly a complete computer report (customized to the customer's
requirements) of all activity or services concerning each file. The customer's
monthly invoice is generated from this report.

     The software system developed by Safesite, SafeFax, is proprietary to it.
Customers can have on-line access to Safesite's data concerning a customer's
stored records or media.

     All Safesite branches use bar coding. Thus, in addition to numeric
indexing, a carton or media container is labeled with a bar code which can be
read by a portable scanner. The scanner is used to record each time a carton is
removed from storage, put on a van, delivered to the customer, picked up and
return to storage. Use of the bar code and scanner eliminates the need to write
down the information at each step and avoids errors.

     Security is a deliberately planned and continuing part of Safesite's
operations. In addition to 24 hour fire and electronic security monitoring
systems, it includes training each employee in Safesite's security procedures as
well as using unmarked vans for transportation of files and leaving the Safesite
name off all buildings or storage facilities.


Employees

     As of December 31, 1996, Safesite had a total of 371 employees, 264
full-time, 12 part-time and 95 temporary. The corporate headquarters was staffed
by 18 persons and the branches were staffed by the remaining employees.


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<PAGE>


     Safesite branch managers are responsible for additional sales to existing
accounts. Salespersons pursue other potential accounts under the supervision of
district sales managers. Both the branch managers and the district sales
managers report to regional managers. As of December 31, 1996, Safesite had 14
branch managers, 3 district sales managers and 3 regional managers.

     Safesite has never had a work stoppage and none of its employees is
represented by a labor organization. Safesite believes that it provides working
conditions, wages and benefits that are competitive with other employers of
persons with similar skills and considers its employee relations to be good.

     Safesite has adopted a compensation plan for its regional managers,
district managers, branch managers and salespersons which provides substantial
incentives to increase sales while maintaining service.


Competition

     Safesite competes with a few other national companies, one of which is Iron
Mountain, as well as a large number of local and regional concerns. Absent
national considerations, Safesite's management believes that the most
significant limiting factor on the market for any branch is the distance from
the branch to the customer's office and that the maximum feasible distance is
approximately fifty miles or a two-hour drive. Within that area, Safesite's
management believes that the most significant factor in competition is price.

     The largest number of potential competitors for off-site storage are
storage lockers and mini-storage facilities in each area in which Safesite
branches are located. Such facilities usually lack the features and services
available at Safesite. Competition also comes from the numerous local moving and
storage companies that offer some degree of records storage. Located in each of
the markets where Safesite does business, these companies have ample storage
facilities but frequently fail to offer the full range of services such as
management reporting, 24-hour accessability and special vaults for media
protection.

     Offering somewhat higher levels of services (and higher prices) are
regional records management companies. Several of such companies have offices in
the cities in which Safesite branches are located. Within regional groups are
some firms that specialize in media storage only or in medical records storage
only. Further, Safesite faces competition from the internal document handling
capability of its current and potential customers.

     The substantial portion of Safesite's revenues have been derived from the
storage of paper documents and from related services. Such storage requires
significant physical space. Alternative technologies for generating, capturing,
managing, transmitting and storing information have been developed, many of
which require significantly less space than paper. Such technologies include
computer media, microforms, audio/video tape, film, CD-ROM and optical disk.
None of these technologies has replaced paper as the principal means for storing
information. However, there can be no assurance that one or more non-paper-based
technologies (whether now existing or developed in the future) may not in the
future significantly reduce or supplant the use of paper as a preferred medium,
which could in turn adversely affect Safesite's business.


Properties

     As of December 31, 1996, Safesite leased 26 records management facilities,
for a total of 760,000 square feet of space, of which 10,000 square feet were
used for the corporate office. Leases expire at various times through 2008. The
leased facilities generally have initial lease terms of 10 years, some with
options to renew for one or two additional 5-year periods. The weighted average
remaining term of the leases on these facilities is approximately 6.7 years. In
addition, some of the leases contain either a purchase option or a right of
first refusal upon the sale of the property. The leases include three properties
leased from affiliates of Safesite. See Note 5 of Notes to Safesite's Financial
Statements.


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<PAGE>


     As of December 31, 1996, Safesite leased the following records management
facilities in the geographic locations indicated below.

                                                     Records
                                                     Management
State                                                Facilities
- -----                                                ----------
Arizona                                                2
California                                             2
Colorado                                               1
Georgia                                                3
Illinois                                               2
Massachusetts                                          2
Michigan                                               3
New York                                               4
North Carolina                                         1
Ohio                                                   3
Virginia                                               2
Washington                                             1
                                                      --
        Total                                         26


     When hard copy storage at a facility reaches 80% of capacity, Safesite will
seek additional space, generally from 30,000 to 40,000 square feet. If such
space is not readily available in the same building, Safesite will seek it
within the market area. Some archival type (non-active) records stored at the
first site will be relocated to the second, as will new records of that type.
The second site will generally have no office or vault.


Insurance

     Safesite carries comprehensive property insurance with insurers that it
believes to be reputable and in amounts that it believes to be appropriate,
covering replacement cost of real and personal property, including improvements.
Subject to sub-limits, the policy also covers extraordinary expenses associated
with business interruption, subject to certain deductibles. Safesite also
maintains general liability and excess liability insurance covering bodily
injury, property damage and personal injury.

     Safesite's standard form of contract sets forth an agreed maximum value for
each carton or other storage unit held by Safesite as a limitation on liability
for loss or damage, as permitted under the Uniform Commercial Code. In contracts
containing such limits, such values are nominal, and Safesite believes that in
typical circumstances its liability would be so limited in the event of loss or
damage relating to the value of information stored on media held by Safesite.


Environmental Matters

     Under various Environmental Laws, an owner of real estate or a lessee
conducting operations thereon may become liable for the costs of investigation,
removal or remediation of soil and groundwater contaminated by certain hazardous
substances or wastes or petroleum products. Certain such laws impose cleanup
responsibility and liability without regard to whether the owner or operator of
the real estate or operations thereon knew of or was responsible for the
contamination, and whether or not operations at the property have been
discontinued or title to the property has been transferred. In addition, the
presence of such substances, or the failure to properly remediate such property
may adversely affect the current property owner's or operator's ability to sell
or rent such property or to borrow using such property as collateral. The owner
or operator of contaminated real estate also may be subject to common law claims
by third parties based on damages and costs resulting from off-site migration of
the contamination.


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<PAGE>


     Certain Environmental Laws govern the removal, encapsulation or disturbance
of ACMs. Such laws may impose liability for the release of ACMs and may enable
third parties to seek recovery from owners or operators of real estate for
personal injury associated with exposure to such substances. Safesite is aware
of the presence of ACMs at some of Safesite's facilities, but believes that such
materials are in acceptable condition at this time. Safesite believes that
future costs related to any remediation of ACMs at these facilities will not be
material, either on an annual basis or in the aggregate, although there can be
no assurance with respect thereto.

     In addition, certain of the properties formerly or currently owned or
operated by Safesite were previously used for industrial or other purposes that
involved the use or storage of hazardous substances or petroleum products or the
generation and disposal of hazardous wastes and, in some instances, included the
operation of USTs. In addition, certain of such properties are adjacent to or
near Superfund sites or other contaminated properties. In connection with its
former and current ownership or operation of certain properties, Safesite may be
potentially liable for environmental costs such as those discussed above.

     Safesite believes that it is in substantial compliance with all applicable
material Environmental Laws. Safesite has not received any written notice from
any governmental authority or third party asserting, and is not otherwise aware
of, any material noncompliance, liability or claim relating to hazardous
substances or wastes, petroleum products or material Environmental Laws
applicable to its operations in connection with any of its present or former
properties. However, no assurance can be given that there are no environmental
conditions for which Safesite might be liable in the future or that future
regulatory action, as well as compliance with future Environmental Laws, will
not require Safesite to incur costs for or at its properties that could have a
material adverse effect on Safesite's financial condition and results of
operations.


Certain Transactions

     Golisano will be appointed a Class A Director of Iron Mountain following
the Closing Date. Golisano is founder and Chairman of Safesite. Golisano has
received no compensation from Safesite. However, he (and the other non-employee
Directors of Safesite) received options under Safesite's 1990 Non-Qualified
Stock Option Plan for Non-Employee Directors to purchase an aggregate of 15,000
shares of Safesite Common Stock at exercise prices of $2.40, $3.00 and $3.29 per
share.

      Between May and December, 1993, Golisano loaned Safesite $3,000,000 at an
interest rate equal to prime plus 2%. Golisano also joined with Wayman in May
1993 to guaranty a bank loan of $425,000 to Safesite. The bank loan and
approximately $493,220 of Golisano's loan were repaid in July 1995 from a
portion of the net proceeds of a sale of Safesite Common Stock. All Safesite
stockholders were offered an opportunity to participate in such offering. The
remaining principal amount of such loans was converted in July 1995 into shares
of Safesite Common Stock as part of such offering at a price equal to $2.00 per
share (the same price paid by Safesite stockholders in the offering).

     Safesite leases three facilities from Golisano or affiliates of Golisano
and Wayman, one in Rochester, New York and two in Billerica, Massachusetts.
During 1994, 1995 and 1996, Safesite paid rent in the amount of approximately
$567,000, $597,000 and $633,000, respectively, under such leases. Each such
lease is, in the opinion of Safesite's management, on commercially reasonable
terms, no less favorable to Safesite than could have been obtained from an
unaffiliated party at the time of the transaction. In connection with the
Merger, Golisano and such affiliates have agreed to sell the properties for an
aggregate of $7.3 million. Closing the sales of such properties is a condition
to closing the Merger.


Legal Proceedings

     Safesite is involved in litigation from time to time in the ordinary course
of business. In the opinion of management, no material legal proceedings are
pending to which Safesite, or any of its properties, is subject.



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Safesite's Selected Financial and Operating Information

     The following tables present selected financial and operating information
relating to the financial condition and results of operations of Safesite over
the past five years, and should be read in conjunction with "--Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
with Safesite's Financial Statements and the Notes thereto included elsewhere in
this Proxy Statement.

<TABLE>
<CAPTION>

                                                                       Year Ended December 31,
                                                                      ------------------------
                                                      1992         1993           1994           1995         1996
                                                      ----         ----           ----           ----         ----
<S>                                                   <C>          <C>            <C>            <C>          <C>

Statements of Operations Data:                                (In thousands, except per share and Carton data)
Revenues:
        Storage...................................      $3,580      $4,780        $5,886         $7,059       $8,300
        Service and Storage Material Sales........       5,474       6,107         7,350          8,955       10,709
                                                       -------     -------      --------        -------     --------
              Total Revenues......................       9,054      10,887        13,236         16,014       19,009
Operating Expenses:
        Cost of Sales (Excluding
            Depreciation).........................       4,663       6,486         6,665          8,054        9,463
        Selling, General and Administrative.......       5,818       4,642         4,975          6,444        7,587
        Depreciation and Amortization.............         582         804           622            657          800
                                                      --------    --------      --------       --------       ------
              Total Operating Expenses............      11,063      11,932        12,262         15,155       17,850
                                                       -------      ------      --------       --------       ------
Operating Income (Loss)                                 (2,009)     (1,045)          974            859        1,159
Interest Expense..................................          20         183           311            209           34
                                                      --------    --------      --------       --------      -------
Income (Loss) before Provision for Income
   Taxes..........................................      (2,029)     (1,228)          663            650        1,125
                                                     ---------   ---------      --------       --------       ------
Provision for Income Taxes........................      -               15            49             64          125
                                                     ---------    --------      --------       --------       ------
Net Income (Loss) before Extraordinary Item.......      (2,029)     (1,243)          614            586        1,000
Extraordinary Gain on Retirement of Debt..........      -              335           -              -            -
                                                     ---------     -------      --------       --------       ------
Net Income (Loss).................................    $ (2,029)      $(908)         $614           $586       $1,000
                                                     =========     =======      ========       ========       ======
Net Income (Loss) Before Extraordinary Item
   per Common and Common Equivalent
   Share..........................................     $(0.28)     $(0.17)         $0.08          $0.07        $0.11
Net Income (Loss) per Common and Common
   Equivalent Share...............................     $(0.28)     $(0.12)         $0.08          $0.07        $0.11
Weighted Average Common and Common
   Equivalent Shares Outstanding..................       7,332       7,332         7,382          8,292        9,171


                                       94

<PAGE>


                                                                       Year Ended December 31,
                                                                      ------------------------
                                                      1992         1993           1994           1995         1996
                                                      ----         ----           ----           ----         ----
<S>                                                   <C>          <C>            <C>            <C>          <C>
Other Data:
EBITDA(1)     ....................................    $(1,427)      $(241)        $1,596         $1,516       $1,959
EBITDA as a Percentage of Total Revenues..........      (15.8)%      (2.2)%         12.0%           9.5%        10.3%
Capital Expenditures..............................     $1,038       $ 762         $  733         $1,718       $1,984
Approximate Cartons in Storage at end of
     Period (in millions)(2)......................         --          --            1.6            2.0          2.4

                                                                       Year Ended December 31,
                                                                      ------------------------
                                                      1992         1993           1994           1995         1996
                                                      ----         ----           ----           ----         ----
<S>                                                   <C>          <C>            <C>            <C>          <C>
Balance Sheet Data:
Cash and Cash Equivalents.........................    $  -         $  299         $  545         $  297       $  221
Total Assets......................................     3,500        3,639          4,552          5,467        7,064
Total Debt........................................       350        3,550          3,550            200          225
Stockholders' Equity (Deficit)....................      (257)      (1,165)          (551)         3,566        4,567
- -------------------
</TABLE>


(1)  Earnings before interest, taxes, depreciation, amortization and
     extraordinary items ("EBITDA"). See "--Management's Discussion and Analysis
     of Financial Condition and Results of Operations--Overview" and
     "--Liquidity and Capital Resources" for discussions of other measures of
     performance determined in accordance with GAAP and Safesite's sources and
     applications of cash flow.

(2)  Carton information is not available for 1992 and 1993.


Management's Discussion and Analysis of Financial Condition and Results of
Operations

     The following discussion should be read in conjunction with the Safesite's
Selected Financial and Operating Information and Safesite's Financial Statements
and the Notes thereto and the other financial and operating information included
elsewhere in this Proxy Statement. All dollar amounts are expressed in
thousands.

Overview

     Safesite's primary financial objective is to increase its net income.
Safesite has benefited from growth in net income, which has increased from a net
loss of $908 for 1993 to net income of $1,000 for 1996. Net income for 1996
increased 70.8% over 1995 net income, which was $586.

     Safesite's revenues consist of storage revenues and service and storage
material sales revenues. Storage revenues are derived from charges for storing
records (either on a per unit or a per cubic foot of records basis), and have
accounted for approximately 44% of total revenues in each of the last three
years. Service and storage material sales revenues are derived primarily from
Safesite's courier operations (consisting primarily of the pickup and delivery
of records upon customer request), additions of new records, temporary removal
of records from storage, refiling of removed records, destruction of records,
permanent withdrawals from storage and sales of specially designed storage
containers and related supplies. Customers are generally billed on a monthly
basis on contractually agreed-upon terms.

     Safesite's total revenues have increased from $10,887 for 1993 to $19,009
for 1996. The compound annual growth rate of 20% in revenues was generated from
increased sales to existing customers as well as sales to new customers, as
Safesite has never acquired a records management company. While the larger
companies in the industry have focused on large volume accounts, Safesite has
continued to focus on the smaller customer accounts

                                       95

<PAGE>


where pricing and margins tend to be more attractive. Safesite has however,
experienced the pricing pressures felt throughout the industry.

     Cost of sales (excluding depreciation) consists primarily of wages,
facility occupancy costs, vehicle and other equipment costs and supplies. Of
these, the most significant are wages and facility occupancy costs. Over the
past several years, Safesite has been able to reduce per Carton storage costs
by: (i) designing racking systems and operating space to maximize facility
storage efficiency; (ii) negotiating favorable facility leases; and (iii)
leasing larger facilities, which, when filled, are less expensive per Carton to
operate.

     Selling, general and administrative expenses consist primarily of
management, administrative, sales and marketing wages and benefits, and also
include travel, communications, professional fees, bad debts, training, office
equipment and supplies expenses.

     Safesite's depreciation and amortization charges result primarily from the
capital-intensive nature of the records management industry. The principal
components of depreciation relate to racking systems and related equipment,
leasehold improvements, equipment for new facilities and computer systems.

Results of Operations

     The following table sets forth, for the periods indicated, information
derived from Safesite's statements of operations, expressed as a percentage of
revenues.

<TABLE>
<CAPTION>

                                                                         Year Ended December 31,
                                                                         -----------------------

                                                                1994              1995               1996
                                                         -----------------------------------------------------
<S>                                                            <C>               <C>                <C>

Revenues:
   Storage                                                      44.5%             44.1%              43.7%
   Service and Storage Material Sales                           55.5              55.9               56.3
                                                             --------          --------            -------
     Total Revenues                                            100.0             100.0              100.0
                                                             --------          --------            -------
Operating Expenses:
   Cost of Sales (Excluding Depreciation)                       50.4              50.3               49.8
   Selling, General and Administrative                          37.6              40.2               39.9
   Depreciation and Amortization                                 4.6               4.1                4.2
                                                             --------          --------           -------
     Total Operating Expenses                                   92.6              94.6               93.9
                                                             --------          --------           -------
Operating Income                                                 7.4               5.4                6.1
Interest Expense                                                 2.4               1.3                0.2
                                                             --------          --------           --------
Income before Provision for Income Taxes                         5.0               4.1                5.9
Provision for Income Taxes                                       0.4               0.4                0.6
                                                             --------          --------           --------
Net Income                                                       4.6%              3.7%               5.3%
                                                             ========          ========           ========

EBITDA                                                          12.0%              9.5%              10.3%
                                                             ========          ========           ========

</TABLE>


Year Ended December 31, 1996 Compared to Year Ended December 31, 1995

     Storage revenues increased from $7,059 for 1995 to $8,300 for 1996, an
increase of $1,241 million or 17.6%. The storage revenues growth resulted
primarily from net increases in Cartons stored by existing customers and from
sales to new customers.

     Service and storage material sales revenues increased from $8,955 for 1995
to $10,709 for 1996, an increase of $1,754 or 19.6%. The increase resulted from
increases in service and storage material sales to existing customers and the
addition of new customer accounts.


                                       96

<PAGE>


     For the reasons discussed above, total revenues increased from $16,014 for
1995 to $19,009 for 1996, an increase of $2,995 or 18.7%.

     Cost of sales (excluding depreciation) increased from $8,054 for 1995 to
$9,463 for 1996, an increase of $1,409 million or 17.5%, and decreased as a
percentage of revenues from 50.3% for 1995 to 49.8% for 1996. The $1,409
increase resulted primarily from an increase in Cartons stored and labor related
to services provided. The decrease as a percentage of revenues was due primarily
to increased storage efficiencies resulting from relocations to, or additions
of, newer, higher density facilities as well as increased utilization of storage
capacity.

     Selling, general and administrative expenses increased from $6,444 for 1995
to $7,587 for 1996, an increase of $1,143 or 17.7%, and decreased as a
percentage of revenues from 40.2% for 1995 to 39.9% for 1996. The $1,143
increase was due primarily to increases in the sales force, administrative
staffing, and the start up of three new branches during 1996.

     Depreciation and amortization expenses increased from $657 for 1995 to $800
for 1996, an increase of $143 or 21.6%, and increased as a percentage of
revenues from 4.1% for 1995 to 4.2% for 1996. Depreciation and amortization
expenses, both in absolute dollars and as a percentage of revenues, continued to
increase, primarily as a result of Safesite's growth-related capital investments
for racking systems and improvements to records management facilities.

     As a result of the foregoing factors, operating income increased from $859
for 1995 to $1,159 for 1996, an increase of $300 or 35.0%, and increased as a
percentage of revenues from 5.4% to 6.1%.

     Interest expense decreased from $209 for 1995 to $34 for 1996. This
decrease was due to the repayment in July 1995 of $3,550 in debt owed to three
stockholders.

     As a result of the foregoing factors, income before provision for income
taxes increased from $650 (4.1% of revenues) for 1995 to $1,125 (5.9% of
revenues) for 1996, an increase of $475 or 73.2%. Provision for income taxes
increased from $64 (0.4% of revenues) to $125 (0.6% of revenues). Safesite's
effective tax rates for 1995 and 1996 were lower than statutory rates due to
substantial tax loss carryforwards from prior years.

     Net income increased $414 from $586 (3.7% of revenues) for 1995 to $1,000
(5.3% of revenues) for 1996 as a result of the factors outlined above.

     As a result of the foregoing factors, EBITDA increased from $1,516 in 1995
to $1,959 in 1996, an increase of $443 or 29.2%, and increased as a percentage
of revenues from 9.5% to 10.3%. These increases reflect continuing economies of
scale and increased operating efficiencies.

Year Ended December 31, 1995 Compared to Year Ended December 31, 1994

     Storage revenues increased from $5,886 for 1994 to $7,059 million for 1995,
an increase of $1,173 or 19.9%. Storage revenues growth resulted from sales to
new customers and increases in Cartons stored from existing customers.

     Service and storage material sales revenues increased from $7,350 for 1994
to $8,955 for 1995, an increase of $1,605 or 21.8%. This increase was due to an
increase in services provided to existing and new customers.

     For the reasons discussed above, total revenues increased from $13,236 in
1994 to $16,014 for 1995, an increase of $2,778 or 21.0%.

     Cost of sales (excluding depreciation) increased from $6,665 for 1994 to
$8,054 for 1995, an increase of $1,389 or 20.8%, and decreased as a percentage
of revenues from 50.4% for 1994 to 50.3% for 1995. The $1,389 increase was due
primarily to increases in storage capacity and labor. The decrease as a
percentage of revenues was due primarily to increased storage efficiencies.


                                       97

<PAGE>


     Selling, general and administrative expenses increased from $4,975 for 1994
to $6,444 for 1995, an increase of $1,469 or 29.5%, and increased as a
percentage of revenues from 37.6% for 1994 to 40.2% for 1995. The increase in
such expenses, both in absolute amounts and as a percentage of revenues, was due
primarily to a significant increase in the sales force as well as the
establishment of a sales management group.

     Depreciation and amortization expenses increased from $622 for 1994 to $657
for 1995, an increase of $35 or 5.6%, and decreased as a percentage of revenues
from 4.6% for 1994 to 4.1% for 1995. This increase in dollar amounts was due
primarily to an increase in depreciation charges resulting from capital
expenditures for racking systems and improvements to records management
facilities and information systems.

     As a result of the foregoing factors, operating income decreased from $974
for 1994 to $859 for 1995, a decrease of $115, and decreased from 7.4% of
revenues to 5.4% of revenues.

     Interest expense decreased from $311 for 1994 to $209 for 1995, a decrease
of $102, due to the repayment in July 1995 of $3,550 of indebtedness owed to
three stockholders.

     As a result of the foregoing factors, income before provision for income
taxes decreased from $663 for 1994 (5.0% of revenues) to $650 for 1995 (4.1% of
revenues), a decrease of $13. Provision for income taxes increased from $49 for
1994 (0.4% of revenues) to $64 for 1995 (0.4% of revenues). Safesite's effective
tax rates for 1994 and 1995 were lower than statutory rates due to substantial
tax loss carryforwards from prior years.

     Net income decreased from $614 (4.6% of revenues) for 1994 to $586 (3.7% of
revenues) for 1995 as a result of the factors outlined above.

     As a result of the foregoing factors, EBITDA decreased from $1,596 for 1994
to $1,516 for 1995, a decrease of $80, and decreased as a percentage of revenues
from 12.0% to 9.5%. The decrease in both dollars and percentage of revenue is a
result of the increases in selling, general and administrative expenses as
outlined above.

Liquidity and Capital Resources

     Safesite's primary sources of capital have been cash flows from operations
and borrowings under a revolving line of credit. Historically, Safesite's uses
of capital have been capital expenditures and costs associated with starting
branches in new cities.

Capital Investments

     For 1994, 1995 and 1996, capital expenditures were $733, $1,718 and $1,984,
respectively, and represented 5.5%, 10.7% and 10.4% of revenues, respectively.
Safesite currently expects that its capital expenditures for 1997 will be
approximately $2,000.

Sources of Funds

     During the years ended December 31, 1994, 1995 and 1996, Safesite generated
cash flows from operations of $1,002, $1,380 and $1,872, respectively. At
December 31, 1996, Safesite had estimated net operating loss carryforwards of
approximately $800 for federal tax purposes. As a result of such loss
carryforwards, cash paid for income taxes has historically been substantially
lower than statutory rates.

Credit Arrangements of Safesite

     Safesite currently has a line of credit which provides for total borrowings
not to exceed $2,000. The interest rate on the line of credit is calculated at
0.5% over the bank's prime rate. The line of credit is secured by substantially
all of the assets of Safesite and requires Safesite to meet certain financial
covenants and ratios. Safesite was in compliance with all such covenants at
December 31, 1996.


                                       98

<PAGE>


       COMPARISON OF RIGHTS OF STOCKHOLDERS OF IRON MOUNTAIN AND SAFESITE

     At the Effective Time, stockholders of Safesite will become stockholders of
Iron Mountain. Set forth below is a comparison of the terms of the Safesite
Common Stock and the terms of the Iron Mountain Common Stock, as well as a
summary of other material differences between the rights of holders of Safesite
Common Stock and the rights of holders of Iron Mountain Common Stock. This
summary does not purport to be complete and is qualified in its entirety by
reference to the Certificate of Incorporation of Safesite ("Safesite Certificate
of Incorporation"), Safesite's Bylaws (the "Safesite By-Laws"), the Iron
Mountain Restated Certificate, the Iron Mountain By-Laws and the more detailed
description of the Iron Mountain Common Stock contained herein. See "Description
of Iron Mountain Capital Stock." Both Iron Mountain and Safesite are
incorporated in the State of Delaware.


Charter Amendments

     General Law. To authorize an amendment to the corporate charter, the DGCL
generally requires the affirmative vote of the holders of a majority of the
outstanding shares entitled to vote thereon. The DGCL provides for any class or
series of stock to vote as a class for the proposed amendment if the amendment
would increase or decrease the number of authorized shares or change the number
or par value of the aggregate authorized shares of a class or series, unless the
charter provides otherwise. The DGCL also provides for class voting if the
amendment would alter or modify the powers, preferences or special rights of the
shares of such class to affect such class adversely.

     Safesite. The Safesite Certificate of Incorporation provides that the
affirmative vote of holders of 662/3% of the shares of each class or series
thereof of the issued and outstanding stock entitled to vote is required to
amend the provisions in the Safesite Certificate of Incorporation pertaining to
notice of nomination of Directors and meeting requirements for stockholder
action. All other amendments to the Safesite Certificate of Incorporation
require the vote of a majority of the stock present or represented at any
meeting.

     Iron Mountain. The vote of holders of at least 662/3 or 80% of the Voting
Power is required for the amendment of certain provisions of the Iron Mountain
Restated Certificate. See "Description of Iron Mountain Capital Stock--Common
Stock--Voting Rights" and "--DGCL and Certain Provisions of the Iron Mountain
Restated Certificate and the Iron Mountain By-Laws--Amendment of Certain
Provisions of the Iron Mountain Restated Certificate and the Iron Mountain
By-Laws."


By-Law Amendments

     General Law. The DGCL provides that the by-laws of a corporation may be
amended by the vote of a majority of the Board of Directors, if so provided in
the charter. The DGCL similarly permits the Board of Directors of a corporation
to amend a corporation's by-laws if so provided. The Board of Directors'
authority to adopt, amend or repeal the by-laws of a corporation does not divest
or limit the power of stockholders to adopt, amend or repeal by-laws. Any
amendment by the Board of Directors to the by-laws may be subsequently changed
by the affirmative vote of holders of a majority of the shares entitled to vote
thereon.

     Safesite. The Safesite By-Laws generally provide that a vote of a majority
of the stockholders or the Safesite Board may alter, amend, or repeal the
Safesite By-Laws, or adopt new by-laws, at any regular meeting of the
stockholders or of the Safesite Board or at any special meeting of the
stockholders or of the Safesite Board if notice of such alteration, amendment,
repeal or adoption of new by-laws is contained in the notice of such special
meeting. However, any Safesite By-Law adopted by the Safesite Board may be
amended or repealed by vote of the holders of shares entitled at the time to
vote for the election of Directors.

     Iron Mountain. The requisite vote of Iron Mountain stockholders to amend
the Iron Mountain By-Laws varies depending upon the provision in question. In
addition, the Iron Mountain By-Laws may be amended by a majority of the full
Iron Mountain Board. See "Description of Iron Mountain Capital Stock--DGCL and
Certain Provisions

                                       99

<PAGE>


of the Iron Mountain Restated Certificate and the Iron Mountain
By-Laws--Amendment of Certain Provisions of the Iron Mountain Restated
Certificate and the Iron Mountain By-Laws."


Voting Rights

     Holders of Iron Mountain Common Stock and Safesite Common Stock are
entitled to one vote per share.


Conversion Rights

     Safesite. Neither the Safesite Certificate of Incorporation nor the
Safesite By-Laws contains a provision relating to conversion rights.

     Iron Mountain. The Nonvoting Common Stock is convertible into Iron Mountain
Common Stock. See "Description of Iron Mountain Capital Stock--Common
Stock--Conversion Provisions."


Preemptive Rights

     None of the Safesite Certificate of Incorporation, the Safesite By-Laws,
the Iron Mountain Restated Certificate or the Iron Mountain By-Laws contains a
provision relating to preemptive rights.


Special Meetings

     General Law. Under the DGCL, a special meeting of stockholders may be
called by the Board of Directors or such other persons as are authorized by the
certificate of incorporation or the by-laws.

     Safesite. The Safesite By-Laws provide that special meetings of the
stockholders may be called for any purpose, unless otherwise prohibited by law,
by the President or the Board of Directors and shall be called by the President
or the Secretary at the request of a majority of the Directors.

     Iron Mountain. There are certain restrictions on special meetings of the
Iron Mountain stockholders. See "Description of Iron Mountain Capital
Stock--DGCL and Certain Provisions of the Iron Mountain Restated Certificate and
the Iron Mountain By-Laws--Stockholder Actions and Meetings."


Corporate Action Without a Meeting

     General Law. The DGCL permits corporate action without a stockholders'
meeting, without prior notice and without a vote of stockholders upon receipt of
the written consent of that number of shares that would be necessary to
authorize the proposed corporate action at a meeting at which all shares
entitled to vote thereon were present and voting, unless the charter expressly
provides otherwise. Prompt notice of the taking of action without a meeting by
less than a unanimous written consent must be given to all stockholders who have
not consented in writing.

     Safesite. The Safesite Certificate of Incorporation provides that whenever
the number of stockholders of Safesite exceeds 100, any action of the
stockholders may be taken only at a meeting duly called. Otherwise, corporate
action may be taken without a meeting, without prior notice and without a vote,
if a consent in writing, setting forth the action so taken, is signed by the
holders of outstanding stock having not less than the minimum number of votes
that would be necessary to authorize or take such action at a meeting at which
all shares entitled to vote thereon were present and voted.


                                       100

<PAGE>


     Iron Mountain. The Iron Mountain Restated Certificate prohibits stockholder
action by written consent. See "Description of Iron Mountain Capital Stock--DGCL
and Certain Provisions of the Iron Mountain Restated Certificate and the Iron
Mountain By-Laws--Stockholder Actions and Meetings."


Dividends

     General Law. Under the DGCL, the Directors of a corporation are generally
permitted to declare and pay dividends out of surplus or out of net profits for
the current and/or preceding fiscal year, provided that such dividends will not
reduce capital below the amount of capital represented by all classes of issued
and outstanding stock having a preference upon the distribution of assets. Also
under the DGCL, a corporation may generally redeem or purchase shares of its
stock if such redemption or purchase will not impair the capital of the
corporation.

     Safesite. The Safesite By-Laws provide that dividends upon the outstanding
capital stock may be declared by the Safesite Board at any regular or special
meeting, pursuant to law and may be paid in cash, in property, or in shares of
capital stock.

     Iron Mountain. For a description of Iron Mountain's dividend policy and the
terms of the Iron Mountain Restated Certificate pertaining to dividends, see
"Market Prices and Dividend Data" and "Description of Iron Mountain Capital
Stock--Common Stock--Dividends."


Liquidation

     General Law. Pursuant to the DGCL, upon the winding up, dissolution or
liquidation of a corporation, the stockholders of such corporation are entitled
to share in any of the assets distributable to the holders of the respective
corporation's stock upon such liquidation, dissolution or winding up in
accordance with their respective rights and interests.

     Safesite. Neither the Safesite Certificate of Incorporation nor the
Safesite By-Laws provide for any procedure for distribution of assets upon
liquidation.

     Iron Mountain. The Iron Mountain Common Stock and Nonvoting Common Stock
share ratably upon liquidation. See "Description of Iron Mountain Capital
Stock--Common Stock--Liquidation Rights."


Provisions Relating To Directors and Officers

     General Law. Under the DGCL, a corporation must have a Board of Directors
consisting of at least one Director. Under the DGCL, a corporation's charter may
(i) confer upon holders of any class or series of stock the right to elect one
or more Directors to serve for such term and to have such voting powers as may
be specified therein, (ii) permit classification of the Board of Directors, and
(iii) permit cumulative voting for the election of Directors.

     Safesite. The Safesite By-Laws provide that the Safesite Board may fix the
number of Directors. Currently, the Safesite Board consists of five members. Any
vacancies on the Safesite Board, however caused, may be filled solely by a
majority vote of the Directors then in office, even if less than a quorum. The
Safesite Certificate of Incorporation does not provide for cumulative voting or
class voting for election of Directors. All executive officers are elected by
the Safesite Board and hold office for such term as may be prescribed by the
Safesite Board. Any such officer elected or appointed by the Safesite Board may
be removed with or without cause at any time by the Safesite Board.

     Iron Mountain. For a description of Iron Mountain's classified Board of
Directors and provisions regarding vacancies and removal, see "Description of
Iron Mountain Capital Stock--DGCL and Certain Provisions of the Iron

                                       101

<PAGE>


Mountain Restated Certificate and the Iron Mountain By-Laws--Classified Board of
Directors" and "--Removal of Directors; Filling Vacancies on the Iron Mountain
Board."


Stockholder Nominations to Elect Directors

     Safesite. The Safesite By-Laws provide that written notice of any
nomination for election of Directors must be provided to the chief executive
officer at least 30 days prior to the scheduled date of the annual meeting.

     Iron Mountain. The Iron Mountain By-Laws provide that nominations of
persons for election to the Iron Mountain Board may be made at a meeting of
stockholders, by or at the direction of the Iron Mountain Board or by any
stockholder of the corporation entitled to vote for the election of Directors at
such meeting, provided there is compliance with such notice procedures as are
outlined in the Iron Mountain By-Laws. See "Description of Iron Mountain Capital
Stock--DGCL and Certain Provisions of the Iron Mountain Restated Certificate and
the Iron Mountain By-Laws."


Removal

     General Law. Under the DGCL, any Director or the entire Board of Directors
of a corporation may be removed, with or without cause, by the holders of a
majority of the shares then entitled to elect Directors. In the case of a
corporation whose Board of Directors is classified, stockholders may effect such
removal only for cause unless the charter provides otherwise.

     Safesite. Neither the Safesite Certificate of Incorporation nor the
Safesite By-Laws contains any provision setting forth an alternative standard
for removal of Directors.

     Iron Mountain. Iron Mountain's Directors may be removed by stockholders
only for cause. See "Description of Iron Mountain Capital Stock--DGCL and
Certain Provisions of the Iron Mountain Restated Certificate and the Iron
Mountain By-Laws--Classified Board of Directors" and "--Removal of Directors;
Filling Vacancies on the Iron Mountain Board."


                        RIGHTS OF DISSENTING STOCKHOLDERS

     Each holder of Safesite Common Stock has the right to dissent from the
Merger and demand and perfect appraisal rights in accordance with the conditions
established by Section 262. The Safesite Principal Stockholders have waived
their appraisal rights with respect to their shares of Safesite Common Stock.

     SECTION 262 IS REPRINTED IN ITS ENTIRETY AS ANNEX V TO THIS PROXY
STATEMENT. THE FOLLOWING DISCUSSION IS NOT A COMPLETE STATEMENT OF THE LAW
RELATING TO APPRAISAL RIGHTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
ANNEX V. THIS DISCUSSION AND ANNEX V SHOULD BE REVIEWED CAREFULLY BY ANY HOLDER
WHO WISHES TO EXERCISE STATUTORY APPRAISAL RIGHTS OR WHO WISHES TO PRESERVE THE
RIGHT TO DO SO, AS FAILURE TO COMPLY WITH THE PROCEDURES SET FORTH HEREIN OR
THEREIN WILL RESULT IN THE LOSS OF APPRAISAL RIGHTS.

     A holder of record of Safesite Common Stock as of the Record Date who makes
the demand described below with respect to such shares, who continuously is the
record holder of such shares through the Effective Time, who otherwise complies
with the statutory requirements of Section 262 and who neither votes in favor of
the Merger Agreement nor consents thereto in writing may be entitled to an
appraisal by the Delaware Court of Chancery (the "Delaware Court") of the fair
value of his or her shares of stock. All references in this summary of appraisal
rights to a "stockholder" is to the record holder or holders of shares of
Safesite Common Stock.


                                       102

<PAGE>


     Under Section 262, where a merger is to be submitted for approval at a
meeting of stockholders, as in the Safesite Stockholders Meeting, not less than
20 days prior to the meeting, each constituent corporation must notify each of
the holders of its stock for which appraisal rights are available that such
appraisal rights are available and include in each such notice a copy of Section
262. This Proxy Statement shall constitute such notice to the record holders of
Safesite Common Stock.

     Holders of Safesite Common Stock who desire to exercise their appraisal
rights must not vote in favor of the Merger Agreement or the Merger and must
deliver a separate written demand for appraisal to Safesite prior to the vote by
the stockholders of Safesite on the Merger Agreement and the Merger. A
stockholder who signs and returns a proxy without expressly directing by
checking the applicable boxes on the reverse side of the proxy card enclosed
herewith that his or her shares of Safesite Common Stock be voted against the
Merger Agreement, or that an abstention be registered with respect to his or her
shares of Safesite Common Stock in connection with the proposal, will
effectively have thereby waived his or her appraisal rights as to those shares
of Safesite Common Stock because, in the absence of express contrary
instructions, such shares of Safesite Common Stock will be voted in favor of the
Merger Agreement. See "The Safesite Stockholders Meeting--Solicitation and
Voting of Proxies." Accordingly, a stockholder who desires to perfect appraisal
rights with respect to any of his or her shares of Safesite Common Stock must,
as one of the procedural steps involved in such perfection, either (i) refrain
from executing and returning the enclosed proxy card and from voting in person
in favor of such proposal to approve the Merger Agreement or (ii) check either
the "Against" or the "Abstain" box next to such proposal on such card or
affirmatively vote in person against the proposal or register in person an
abstention with respect thereto. A demand for appraisal must be executed by or
on behalf of the stockholder of record and must reasonably inform Safesite of
the identity of the stockholder of record and that such record stockholder
intends thereby to demand appraisal of the Safesite Common Stock. A person
having a beneficial interest in shares of Safesite Common Stock that are held of
record in the name of another person, such as a broker, fiduciary or other
nominee, must act promptly to cause the record holder to follow the steps
summarized herein properly and in a timely manner to perfect whatever appraisal
rights are available. If the shares of Safesite Common Stock are owned of record
by a person other than the beneficial owner, including a broker, fiduciary (such
as a trustee, guardian or custodian) or other nominee, such demand must be
executed by or for the record owner. If the shares of Safesite Common Stock are
owned of record by more than one person, as in a joint tenancy or tenancy in
common, such demand must be executed by or for all joint owners. An authorized
agent, including an agent for two or more joint owners, may execute the demand
for appraisal for a stockholder of record; however, the agent must identify the
record owner and expressly disclose the fact that, in exercising the demand,
such person is acting as agent for the record owner.

     A record owner, such as a broker, fiduciary or other nominee, who holds
shares of Safesite Common Stock as a nominee for others, may exercise appraisal
rights with respect to the shares held for all or less than all beneficial
owners of shares as to which such person is the record owner. In such case, the
written demand must set forth the number of shares covered by such demand. Where
the number of shares is not expressly stated, the demand will be presumed to
cover all shares of Safesite Common Stock outstanding in the name of such record
owner.

     A stockholder who elects to exercise appraisal rights, if available, should
mail or deliver his or her written demand to: Safesite Records Management
Corporation, 96 High Street, North Billerica, Massachusetts 01863, Attention:
President.

     The written demand for appraisal should specify the stockholder's name and
mailing address, the number of shares of Safesite Common Stock owned, and that
the stockholder is thereby demanding appraisal of his or her shares. A proxy or
vote against the Merger Agreement will not by itself constitute such a demand.
Within ten days after the Effective Time, the Surviving Corporation must provide
notice of the Effective Time to all stockholders who have complied with Section
262.

     Within 120 days after the Effective Time, either the Surviving Corporation
or any stockholder who has complied with the required conditions of Section 262
may file a petition in the Delaware Court, with a copy served on the Surviving
Corporation in the case of a petition filed by a stockholder, demanding a
determination of the fair value of the shares of all dissenting stockholders.
Accordingly, Safesite stockholders who desire to have their shares appraised
should initiate any petitions necessary for the perfection of their appraisal
rights within the time periods

                                       103

<PAGE>


and in the manner prescribed in Section 262. Within 120 days after the Effective
Time, any stockholder who has theretofore complied with the applicable
provisions of Section 262 will be entitled, upon written request, to receive
from the Surviving Corporation a statement setting forth the aggregate number of
shares of Safesite Common Stock not voting in favor of the Merger Agreement and
with respect to which demands for appraisal were received by Safesite and the
number of holders of such shares. Such statement must be mailed within 10 days
after the written request therefor has been received by the Surviving
Corporation.

     If a petition for an appraisal is timely filed and assuming appraisal
rights are available, at the hearing on such petition, the Delaware Court will
determine which stockholders, if any, are entitled to appraisal rights. The
Delaware Court may require the stockholders who have demanded an appraisal for
their shares and who hold stock represented by certificates to submit their
certificates of stock to the Register in Chancery for notation thereon of the
pendency of the appraisal proceedings; and if any stockholder fails to comply
with such direction, the Delaware Court may dismiss the proceedings as to such
stockholder. Where proceedings are not dismissed, the Delaware Court will
appraise the shares of Safesite Common Stock owned by such stockholders,
determining the fair value of such shares exclusive of any element of value
arising from the accomplishment or expectation of the Merger, together with a
fair rate of interest, if any, to be paid upon the amount determined to be the
fair value. In determining fair value, the Delaware Court is to take into
account all relevant factors. In Weinberger v. UOP Inc., the Delaware Supreme
Court discussed the factors that could be considered in determining fair value
in an appraisal proceeding, stating that "proof of value by any techniques or
methods which are generally considered acceptable in the financial community and
otherwise admissible in court" should be considered, and that "fair price
obviously requires consideration of all relevant factors involving the value of
a company." The Delaware Supreme Court stated that in making this determination
of fair value the court must consider market value, asset value, dividends,
earnings prospects, the nature of the enterprise and any other facts
ascertainable as of the date of the merger that throw light on future prospects
of the merged corporation. In Weinberger, the Delaware Supreme Court stated that
"elements of future value, including the nature of the enterprise, which are
known or susceptible of proof as of the date of the merger and not the product
of speculation, may be considered." Section 262, however, provides that fair
value is to be "exclusive of any element of value arising from the
accomplishment or expectation of the merger."

     The cost of the appraisal proceeding may be determined by the Delaware
Court and taxed against the parties as the Delaware Court deems equitable in the
circumstances. Upon application of a dissenting stockholder of Safesite, the
Delaware Court may order that all or a portion of the expenses incurred by any
dissenting stockholder in connection with the appraisal proceeding, including,
without limitation, reasonable attorney's fees and the fees and expenses of
experts, be charged pro rata against the value of all shares of stock entitled
to appraisal.

     Any holder of shares of Safesite Common Stock who has duly demanded
appraisal in compliance with Section 262 will not, after the Effective Time, be
entitled to vote for any purpose any shares subject to such demand or to receive
payment of dividends or other distributions on such shares, except for dividends
or distributions payable to stockholders of record at a date prior to the
Effective Time.

     If no petition for appraisal is filed with the Delaware Court within 120
days after the Effective Time, stockholders' rights to appraisal shall cease.
Any stockholder may withdraw such stockholder's demand for appraisal by
delivering to the Surviving Corporation a written withdrawal of his or her
demand for appraisal and acceptance of the Merger, except that (i) any such
attempt to withdraw made more than 60 days after the Effective Time will require
written approval of the Surviving Corporation and (ii) no appraisal proceeding
in the Delaware Court will be dismissed as to any stockholder without the
approval of the Delaware Court, which may be conditioned upon such terms as the
Delaware Court deems just.


                                       104

<PAGE>


                                  LEGAL MATTERS


     The validity of the Iron Mountain Common Stock to be issued in connection
with the Merger and certain other legal matters relating to the Merger will be
passed upon by Sullivan & Worcester LLP. Jas. Murray Howe, Secretary of Iron
Mountain, is of counsel to Sullivan & Worcester LLP and beneficially owns 3,855
shares of Iron Mountain Common Stock.

     Certain legal matters relating to the Merger will be passed upon by Woods,
Oviatt, Gilman, Sturman & Clarke LLP.


                                     EXPERTS


     The consolidated financial statements and schedule of Iron Mountain
Incorporated and its subsidiaries for each of the three years ended December 31,
1996, included in this Prospectus and elsewhere in the Registration Statement,
have been audited by Arthur Andersen LLP, independent public accountants, as
indicated in their reports with respect thereto, and are included herein in
reliance upon the authority of said firm as experts in giving said reports.

     The financial statements of Nashville Vault Company, Ltd. for the year
ended December 31, 1995, included in this Prospectus and in the Registration
Statement, have been audited by Geo. S. Olive & Co. LLC, independent public
accountants, as indicated in their report with respect thereto, and are included
herein in reliance upon the authority of said firm as experts in giving said
report.

     The financial statements of International Record Storage and Retrieval
Service, Inc. for the year ended December 31, 1995, included in this Prospectus
and in the Registration Statement, have been audited by Rothstein, Kass &
Company, P.C., independent public accountants, as indicated in their report with
respect thereto, and are included herein in reliance upon the authority of said
firm as experts in giving said report.

     The financial statements of Mohawk Business Record Storage, Inc. for the
year ended December 31, 1995, included in this Prospectus and in the
Registration Statement, have been audited by Arthur Andersen LLP, independent
public accountants, as indicated in their report with respect thereto, and are
included herein in reliance upon the authority of said firm as experts in giving
said report.

     The financial statements and schedule of Safesite Records Management
Corporation, for each of the three years ended December 31, 1996, included in
this Prospectus and elsewhere in the Registration Statement, have been audited
by Arthur Andersen LLP, independent public accountants, as indicated in their
reports with respect thereto, and are included herein in reliance upon the
authority of said firm as experts in giving said reports.


                                       105

<PAGE>


                         INDEX TO FINANCIAL STATEMENTS 

                                                                           Page 
                                                                          ------
Financial Statements of Iron Mountain Incorporated   ..................    F-2  
Financial Statements of Recent Acquisitions:                                    
  Nashville Vault Company, Ltd.    ....................................    F-22 
  International Record Storage and Retrieval Service, Inc.    .........    F-28 
  Mohawk Business Record Storage, Inc.   ..............................    F-36 
Financial Statements of Safesite Records Management Corporation  ......    F-44 





                                      F-1

<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Board of Directors of
   Iron Mountain Incorporated:

     We have audited the accompanying consolidated balance sheets of Iron
Mountain Incorporated (a Delaware corporation) and its subsidiaries, as of
December 31, 1995 and 1996 and the related consolidated statements of
operations, stockholders' equity and cash flows for each of the three years in
the period ended December 31, 1996. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Iron Mountain Incorporated
and its subsidiaries as of December 31, 1995 and 1996, and the results of its
operations and its cash flows for each of the three years in the period ended
December 31, 1996, in conformity with generally accepted accounting principles.



                                         ARTHUR ANDERSEN LLP

Boston, Massachusetts
March 4, 1997 (except for
  Note 11.a. and e. for which
  the date is March 19, 1997)








                                       F-2



<PAGE>


                           IRON MOUNTAIN INCORPORATED
            CONSOLIDATED BALANCE SHEETS -- DECEMBER 31, 1995 AND 1996
                             (Amounts in thousands)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                             December 31,
                                                                                     ---------------------------
                                                                                          1995           1996
                                                                                     ------------   ------------
<S>                                                                                  <C>            <C>
Current Assets:
  Cash and Cash Equivalents.....................................................     $      1,585   $      3,453
  Accounts Receivable (Less Allowances of $651 and $1,061
     as of 1995 and 1996, Respectively).........................................           16,936         24,136
  Inventories...................................................................              682            767
  Deferred Income Taxes.........................................................            1,943          3,378
  Prepaid Expenses and Other....................................................            1,862          3,054
                                                                                     ------------   ------------
          Total Current Assets..................................................           23,008         34,788

Property, Plant and Equipment:
  Property, Plant and Equipment.................................................          125,240        163,495
  Less -- Accumulated Depreciation..............................................          (32,564)       (45,146)
                                                                                     ------------   ------------
          Net Property, Plant and Equipment.....................................           92,676        118,349

Other Assets:
  Goodwill, net.................................................................           59,253        109,363
  Customer Acquisition Costs, net...............................................            5,210          6,334
  Deferred Financing Costs, net.................................................            2,638          7,358
  Other.........................................................................            4,096          5,607
                                                                                     ------------   ------------
          Total Other Assets....................................................           71,197        128,662
                                                                                     ------------   ------------
Total Assets....................................................................     $    186,881   $    281,799
                                                                                     ============   ============

                      LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities:
  Current Portion of Long-term Debt.............................................     $      2,578   $        396
  Accounts Payable..............................................................            4,797          3,750
  Accrued Expenses..............................................................           10,917         17,275
  Deferred Income...............................................................            3,108          4,995
  Other Current Liabilities.....................................................              469            414
                                                                                     ------------   ------------
          Total Current Liabilities.............................................           21,869         26,830

Long-term Debt, Net of Current Portion..........................................          119,296        184,337
Other Long-term Liabilities.....................................................            6,769          6,576
Deferred Rent...................................................................            7,983          7,651
Deferred Income Taxes...........................................................            3,621          4,021

Commitments and Contingencies (see Note 8)

Redeemable Put Warrant..........................................................            6,332             --

Stockholders' Equity:
  Preferred Stock...............................................................                5             --
  Common Stock..................................................................                0            101
  Additional Paid-in Capital....................................................           28,809         62,135
  Accumulated Deficit...........................................................           (7,803)        (9,852)
                                                                                     ------------   ------------
          Total Stockholders' Equity............................................           21,011         52,384
                                                                                     ------------   ------------
Total Liabilities and Stockholders' Equity......................................     $    186,881   $    281,799
                                                                                     ============   ============
</TABLE>


              The accompanying notes are an integral part of these
                       consolidated financial statements.


                                       F-3
<PAGE>


                           IRON MOUNTAIN INCORPORATED
                      CONSOLIDATED STATEMENTS OF OPERATIONS
              FOR THE YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996
                  (Amounts in thousands except per share data)

<TABLE>
<CAPTION>
                                                                                1994               1995             1996
                                                                            ------------      -------------     -------------
<S>                                                                         <C>               <C>               <C>
 Revenues:
   Storage...............................................................   $     54,098      $      64,165     $      85,826
   Service and Storage Material Sales....................................         33,520             40,271            52,892
                                                                            ------------      -------------     -------------
          Total Revenues.................................................         87,618            104,436           138,718

 Operating Expenses:
   Cost of Sales (Excluding Depreciation)................................         45,880             52,277            70,747
   Selling, General and Administrative...................................         20,853             26,035            34,342
   Depreciation and Amortization.........................................          8,690             12,341            16,936
                                                                            ------------      -------------     -------------
          Total Operating Expenses.......................................         75,423             90,653           122,025
                                                                            ------------      -------------     -------------

 Operating Income........................................................         12,195             13,783            16,693
 Interest Expense........................................................          8,954             11,838            14,901
                                                                            ------------      -------------     -------------

          Income Before Provision for Income Taxes.......................          3,241              1,945             1,792

 Provision for Income Taxes..............................................          1,957              1,697             1,435
                                                                            ------------      -------------     -------------

          Income Before Extraordinary Charge.............................          1,284                248               357

 Extraordinary Charge from Early Retirement of
          Debt (Net of  Tax Benefit of $1,413)...........................             --                 --             2,126
                                                                            ------------      -------------     -------------

          Net Income (Loss) .............................................          1,284                248            (1,769)

 Accretion of Redeemable Put Warrant.....................................          1,412              2,107               280
                                                                            ------------      -------------     -------------

          Net Loss Applicable to Common Stockholders.....................   $       (128)     $      (1,859)    $      (2,049)
                                                                            ============      =============     =============

 Net Income (Loss) per Common and Common Equivalent Share:

          Income Before Extraordinary Charge and
               Accretion of Put Warrant..................................   $       0.16      $        0.03     $        0.04
          Accretion of Put Warrant.......................................          (0.18)             (0.27)            (0.03)
                                                                            ------------      -------------     -------------
          Income (Loss) Before Extraordinary Charge .....................          (0.02)             (0.24)             0.01
          Extraordinary Charge (Net of Tax Benefit) .....................             --                 --             (0.21)
                                                                            ------------      -------------     -------------

 Net Loss Per Common and Common Equivalent Share.........................   $      (0.02)     $       (0.24)    $       (0.20)
                                                                            ============      =============     =============

 Weighted Average Common and Common
          Equivalent Shares Outstanding..................................          7,984              7,784            10,137
</TABLE>









              The accompanying notes are an integral part of these
                       consolidated financial statements.


                                       F-4
<PAGE>


                           IRON MOUNTAIN INCORPORATED
                 CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                     AS OF DECEMBER 31, 1994, 1995 AND 1996
                             (Dollars in thousands)

<TABLE>
<CAPTION>
                                                                                                December 31,
                                                                              ---------------------------------------------
                                                                                  1994             1995            1996
                                                                              ------------     -----------     ------------
<S>                                                                           <C>              <C>             <C>
 Series A1 Preferred Stock:

   Balance, Beginning of Period........................................       $          2     $         1     $          0
   Conversion of 100,000 Shares of Series A1
      Preferred Stock to Series A2 Preferred Stock.....................                 (1)             --               --
   Conversion of 43,500 Shares of Series A1
     Preferred Stock to Series A3 Preferred Stock......................                 --              (1)              --
   Conversion of 6,500 Shares of Series A1
      Preferred Stock to Common Stock - Voting.........................                 --              --               (0)
                                                                              ------------     -----------     ------------
    Balance, End of Period; (50,000, 6,500 and
      0 Shares Outstanding as of December 31,
      1994, 1995 and 1996, Respectively)...............................                  1               0               --
                                                                              ------------     -----------     ------------

 Series A2 Preferred Stock:

   Balance, Beginning of Period........................................                 --               1                1
   Conversion of 100,000 Shares of Series A1
      Preferred Stock to Series A2 Preferred Stock.....................                  1              --               --
   Repurchase of 2,000 Shares of Series A2 Preferred Stock.............                 --               0               --
   Conversion of 25,321 Shares of Series A2
      Preferred Stock to Common Stock - Non-Voting.....................                 --              --               (0)
   Conversion of 72,679 Shares of Series A2
      Preferred Stock to Common Stock - Voting.........................                 --              --               (1)
                                                                              ------------     -----------     ------------
   Balance, End of Period; (100,000, 98,000 and
      0 Shares Outstanding as of December 31,
      1994, 1995 and 1996, Respectively)...............................                  1               1               --
                                                                              ------------     -----------     ------------

 Series A3 Preferred Stock:

   Balance, Beginning of Period........................................                 --              --               1
   Conversion of 43,500 Shares of Series A1
      Preferred Stock to Series A3 Preferred Stock.....................                 --               1              --
   Conversion of 43,500 Shares of Series A3
      Preferred Stock to Common Stock - Voting.........................                 --              --              (1)
                                                                              ------------     -----------     -----------
   Balance, End of Period (None Outstanding as of December
     31, 1994; 43,500 and 0 Shares Outstanding as of
     December 31, 1995 and 1996, Respectively).........................                 --               1              --
                                                                              ------------     -----------     -----------
</TABLE>



              The accompanying notes are an integral part of these
                       consolidated financial statements.


                                       F-5
<PAGE>


                           IRON MOUNTAIN INCORPORATED
         CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY -- (Continued)
                             (Dollars in thousands)

<TABLE>
<CAPTION>
                                                                                                December 31,
                                                                             ---------------------------------------------
                                                                                  1994            1995            1996
                                                                             ------------     ------------    ------------
<S>                                                                                    <C>              <C>             <C>
Series C Preferred Stock:

  Balance, Beginning of Period........................................                  3               3               3
  Conversion of 351,395 Shares of Series C
     Preferred Stock to Common Stock - Voting.........................                 --              --              (3)
                                                                             ------------     -----------     -----------
  Balance, End of Period; (351,395, 351,395 and
     0 Shares Outstanding as of December 31, 1994,
     1995 and 1996, Respectively).....................................                  3               3              --
                                                                             ------------     -----------     -----------

     Total Preferred Stock............................................                  5               5              --
                                                                             ------------     -----------     -----------
Class A Common Stock:

  Balance, Beginning of Period........................................                  0                0               0
  Exercise of 15,976 Stock Options in 1995............................                 --                0              --
  Conversion of 44,888 Shares of Class A
     Common Stock to Common Stock - Voting............................                 --               --              (0)
                                                                             ------------     ------------    ------------
   Balance, End of Period; (28,912, 44,888 and 0 Shares
     Outstanding as of December 31, 1994, 1995 and
     1996, Respectively)..............................................                  0                0              --
                                                                             ------------     ------------    ------------

Class C Common Stock:

  Balance, Beginning of Period........................................                  0               --              --
  Repurchase of 17,289 Shares of Class C Common Stock.................                 (0)              --              --
                                                                             ------------     ------------    ------------
  Balance, End of Period; (None Outstanding as of
     December 31, 1994, 1995 and 1996, Respectively)..................                 --               --              --
                                                                             ------------     ------------    ------------

Common Stock - Voting:

  Balance, Beginning of Period........................................                 --               --              --
  Conversion of 474,074 Shares of Preferred Stock
     and 44,888 Shares of Class A Common Stock to
     Common Stock - Voting............................................                 --               --              73
  Issuance of 2,350,000 Shares in Initial Public Offering ............                 --               --              23
  Exercise of 6,896 Stock Options ....................................                 --               --               0
  Issuance of 915 Shares for Services ................................                 --               --               0
  Conversion of 22,705 Shares of Common
     Stock - Non-Voting to Common Stock - Voting......................                 --               --               0
                                                                             ------------     ------------    ------------
  Balance, End of Period; (None Outstanding as of
     December 31, 1994 and 1995; 9,657,657 Outstanding
     as of December 31, 1996).........................................                 --               --              96
                                                                             ------------     ------------    ------------
</TABLE>






              The accompanying notes are an integral part of these
                       consolidated financial statements.


                                       F-6
<PAGE>


                           IRON MOUNTAIN INCORPORATED
         CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY -- (Continued)
                             (Dollars in thousands)
<TABLE>
<CAPTION>
                                                                                               December 31,
                                                                              -------------------------------------------
                                                                                  1994             1995           1996
                                                                              -----------       ----------      ---------
<S>                                                                           <C>               <C>             <C>
Common Stock - Non-Voting:

  Balance, Beginning of Period..........................................               --               --             --
  Conversion of 25,321 Shares of Series A2 Preferred Stock
     to 500,000 Shares of Common Stock - Non-Voting ....................               --               --              5
  Conversion of 22,705 Shares of Common
     Stock - Non-Voting to Common Stock - Voting........................               --               --             (0)
                                                                              -----------       ----------      ---------
  Balance, End of Period; (None Outstanding as of
     December 31, 1994 and 1995;  477,295 Outstanding
     as of December 31, 1996)...........................................               --               --              5
                                                                              -----------       ----------      ---------

     Total Common Stock.................................................               --               --            101
                                                                              -----------       ----------      ---------

Additional Paid-in Capital:

  Balance, Beginning of Period..........................................      $    29,858       $   28,808      $   28,809
  Repurchase of 17,289 Shares of Class C Common Stock...................           (1,050)              --              --
  Repurchase of 2,000 Shares of Series A2 Preferred Stock...............               --             (199)             --
  Issuance of 15,976 Shares of Class A Common
     Stock Pursuant to Option Exercises ................................               --              200              --
  Conversion of Preferred Stock and Class A Common
    Stock to Common Stock - Voting and Common
      Stock - Non-Voting................................................               --               --             (73)
  Issuance of 2,350,000 Shares of Common Stock - Voting
     Pursuant to the Company's Initial Public Offering of
     Common Stock.......................................................               --               --          33,262
  Issuance of 6,896 Shares of Common
     Stock - Voting Pursuant to Option Exercises .......................               --               --              66
  Issuance of 915 Shares of Common
     Stock - Voting for Services .......................................               --               --              19
  Tax Benefit of Option Exercises.......................................               --               --              52
                                                                              -----------       ----------      ----------
  Balance, End of Period................................................           28,808           28,809          62,135
                                                                              -----------       ----------      ----------

Accumulated Deficit:

  Balance, Beginning of Period..........................................           (5,816)          (5,944)         (7,803)
  Net Income (Loss).....................................................            1,284              248          (1,769)
  Accretion of Redeemable Put Warrant...................................           (1,412)          (2,107)           (280)
                                                                              -----------       ----------      ----------
  Balance, End of Period................................................           (5,944)          (7,803)         (9,852)
                                                                              -----------       ----------      ----------

Total Stockholders' Equity..............................................      $    22,869       $   21,011      $   52,384
                                                                              ===========       ==========      ==========
</TABLE>











              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       F-7

<PAGE>


                           IRON MOUNTAIN INCORPORATED
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                     AS OF DECEMBER 31, 1994, 1995 AND 1996
                             (Amounts in thousands)

<TABLE>
<CAPTION>
                                                                                 1994           1995           1996
                                                                              ---------      ---------      ----------
<S>                                                                           <C>            <C>            <C>
Cash Flows from Operating Activities:
  Net Income (Loss)...................................................        $   1,284      $     248      $  (1,769)
  Adjustments to Reconcile Net Income (Loss) to Cash
     Flows Provided by Operations:
     Depreciation and Amortization....................................            8,690         12,341         16,936
     Amortization of Financing Costs..................................            1,046          1,135            857
     Provision For Doubtful Accounts..................................              356            630            639
     Extraordinary Loss on Early Retirement of Debt...................               --             --          3,539
     Loss on Sale of Fixed Assets.....................................              278            400             --
     Other Long-term Liabilities......................................             (394)          (527)          (193)
  Changes in Assets and Liabilities (Exclusive of
     Acquisitions):
     Accounts Receivable..............................................           (2,163)        (3,171)        (4,395)
     Inventory, Prepaid Expenses and Other Assets.....................             (556)          (739)          (878)
     Deferred Income Taxes............................................            1,714          1,179           (973)
     Accounts Payable.................................................               83            265         (1,278)
     Accrued Expenses.................................................            1,191          4,252          3,642
     Deferred Rent....................................................              441           (110)          (332)
     Deferred Income..................................................              (26)          (301)           161
     Other Liabilities................................................             (369)           125            (56)
                                                                              ---------      ---------      ---------
     Cash Flows Provided by Operations................................           11,575         15,727         15,900
                                                                              ---------      ---------      ---------
Cash Flows from Investing Activities:
  Capital Expenditures................................................          (16,980)       (15,253)       (24,446)
  Additions to Customer Acquisition Costs.............................           (1,366)        (1,379)        (1,642)
  Cash Paid for Acquisitions..........................................           (2,846)       (33,048)       (68,496)
  Proceeds from Sale of Assets........................................            2,973             73             --
  Other, Net..........................................................              705             71            (25)
                                                                              ---------      ---------      ---------
     Cash Flows Used in Investing Activities..........................          (17,514)       (49,536)       (94,609)
                                                                              ---------      ---------      ---------
Cash Flows From Financing Activities:
  Repayment of Debt...................................................          (13,642)          (812)      (171,730)
  Net Proceeds from Borrowings........................................           21,350         36,350         69,570
  Net Proceeds from Sale of Senior Subordinated Notes.................               --             --        160,050
  Net Proceeds from Initial Public Offering...........................               --             --         33,285
  Retirement of Redeemable Put Warrant................................               --             --         (6,612)
  Prepayment Penalties on Early Retirement of Debt....................               --             --         (1,785)
  Cash From Exercise of Stock Options.................................               --            200             66
  Repurchase of Stock.................................................           (1,050)          (199)            --
  Financing Costs.....................................................               (7)        (1,448)        (2,267)
                                                                              ---------      ---------      ---------
     Cash Flows Provided by Financing Activities......................            6,651         34,091         80,577
                                                                              ---------      ---------      ---------
Increase in Cash......................................................              712            282          1,868
Cash and Cash Equivalents, Beginning of Year..........................              591          1,303          1,585
                                                                              ---------      ---------      ---------
Cash and Cash Equivalents, End of Year................................        $   1,303      $   1,585      $   3,453
                                                                              =========      =========      =========

Supplemental Information:

Cash Paid for Interest................................................        $   7,741      $   9,111      $  11,590
                                                                              =========      =========      =========

Cash Paid for Income Taxes............................................        $     339      $   1,177      $     197
                                                                              =========      =========      =========
</TABLE>


              The accompanying notes are an integral part of these
                       consolidated financial statements.


                                       F-8
<PAGE>



                           IRON MOUNTAIN INCORPORATED
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                DECEMBER 31, 1996
                    (Amounts in thousands except share data)

1. Nature of Business

     The accompanying financial statements represent the consolidated accounts
of Iron Mountain Incorporated and its subsidiaries (collectively "Iron Mountain"
or the "Company"). Iron Mountain is a full service records management company
providing storage and related services for all media in various locations
throughout the United States to Fortune 500 Companies and numerous legal,
banking, health care, accounting, insurance, entertainment and government
organizations.

2. Summary of Significant Accounting Policies

    a. Principles of Consolidation

     The financial statements reflect the financial position and results of
operations of Iron Mountain on a consolidated basis. All significant
intercompany account balances have been eliminated.

    b. Property, Plant and Equipment

     Property, plant and equipment are stated at cost and depreciated using the
straight-line method with the following useful lives:

<TABLE>
             <S>                                                 <C>
             Buildings........................................   40 to 50 years
             Leasehold improvements...........................   8 to 10 years or the life of the lease,
                                                                   whichever is shorter
             Racking..........................................   10 to 20 years
             Warehouse equipment/vehicles.....................   5 to 10 years
             Office equipment.................................   3 to 5 years
             Computer hardware and software...................   3 to 5 years
</TABLE>

     Property, plant and equipment consist of the following:

                                                           December 31,
                                                    --------------------------
                                                      1995              1996
                                                    --------          --------
     Real property.............................     $ 34,162          $ 38,552
     Leasehold improvements....................       11,206            14,918
     Racking...................................       53,348            72,854
     Warehouse equipment/vehicles..............        5,810             7,730
     Furniture and fixtures....................        2,754             3,839
     Computer hardware and software............       13,729            19,786
     Construction in progress..................        4,231             5,816
                                                    --------          --------
                                                    $125,240          $163,495
                                                    ========          ========

     The Company develops various software applications for internal use.
Payroll and related costs for employees who are directly associated with and who
devote time to the internal-use computer software project (to the extent of the
time spent directly on the project) are capitalized and amortized over the
useful life of the software. Capitalization begins when the design stage of the
application has been completed, it is probable that the project will be
completed and the application will be used to perform the function intended.
Amortization begins when the software is placed in service.

     Minor maintenance costs are expensed as incurred. Major improvements to the
leased buildings are capitalized as leasehold improvements and depreciated as
described above.


                                       F-9
<PAGE>



                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

    c. Revenue Recognition

     Storage and service revenues are recognized in the month the respective
service is provided. Storage material sales are recognized when shipped to the
customer. Amounts related to future storage for customers where storage fees are
billed in advance are accounted for as deferred income and amortized over the
applicable period.

    d. Goodwill

     Goodwill reflects the cost in excess of fair value of the net assets of
companies acquired in purchase transactions. Goodwill is amortized using the
straight-line method from the date of acquisition over the expected period to be
benefited, currently estimated at 25 years. The Company assesses the
recoverability of goodwill, as well as other long lived assets based upon
expectations of future undiscounted cash flows in accordance with Statement of
Financial Accounting Standards ("SFAS") No. 121, "Accounting for the Impairment
of Long Lived Assets and for Long Lived Assets to be Disposed Of." Accumulated
amortization of goodwill was $15,074 and $18,858 as of December 31, 1995 and
1996, respectively. In 1995, the Company recorded a $900 impairment of goodwill
related to one of its subsidiaries.

    e. Deferred Financing Costs

     Deferred financing costs are amortized over the life of the related debt
using the effective interest rate method. If debt is retired early, unamortized
deferred financing costs are written off as an extraordinary charge in the
period the debt is retired. As of December 31, 1995 and 1996, deferred financing
costs were $4,688, and $7,998, respectively, and accumulated amortization of
those costs were $2,050, and $640, respectively.

    f. Customer Acquisition Costs

     Costs, net of revenues received for the initial transfer of the records,
related to the acquisition of large volume accounts (accounts consisting of
10,000 or more cartons) are capitalized and amortized for an appropriate period
not exceeding 12 years, unless the customer terminates its relationship with the
Company, at which time the unamortized cost is charged to expense. However, in
the event of such termination, the Company collects and records as income
permanent removal fees that generally equal or exceed the amount of unamortized
customer acquisition costs. As of December 31, 1995 and 1996 those costs were
$6,492 and $8,134, respectively, and accumulated amortization of those costs
were $1,282 and $1,800, respectively.

    g. Deferred Rent

     The Company has entered into various leases for buildings used in the
storage of records. Certain leases have fixed escalation clauses or other
features which require normalization of the rental expense over the life of the
lease resulting in deferred rent being reflected in the accompanying balance
sheets. In addition, the Company has assumed various unfavorable leases in
connection with certain of its acquisitions. The discounted present value of
these lease obligations in excess of market rate at the date of the acquisition
was recorded as a deferred rent liability and is being amortized over the
remaining lives of the respective leases.

    h. Inventories

     Inventories are carried at the lower of cost using the first-in, first-out
basis or market and are comprised primarily of cartons.


                                       F-10

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

    i. Accrued Expenses

     Accrued expenses consist of the following:

                                                December 31,
                                       ----------------------------------
                                             1995                1996
                                       ----------------- ----------------
     Incentive compensation...........       $ 1,701          $ 2,287
     Interest.........................         1,737            4,247
     Workers' compensation............         2,415            2,949
     Payroll .........................           920            1,448
     Other............................         4,144            6,344
                                             -------          -------
                                             $10,917          $17,275
                                             =======          =======

    j.  Net Income (Loss) Per Common Share

     Net income (loss) per common share is computed based on the weighted
average number of common and common stock equivalent shares outstanding during
each period. Common stock equivalents consist of preferred stock that is
convertible into common stock and employee options to purchase common stock.
Pursuant to certain SEC regulations, the calculation of weighted average shares
outstanding assumes the conversion of preferred stock for all periods presented.
The stock options have not been included in the calculation of common stock
equivalents for 1994 and 1995 because their dilutive effect was immaterial.

     On March 3, 1997, the Financial Accounting Standards Board issued SFAS No.
128, "Earnings Per Share". The new standard must be applied beginning in 1998
and at that time will require restatement of previously reported earnings per
share. The new statement cannot be applied early. The Company believes that the
effect of applying the new standard will not be material.

    k.  Use of Estimates

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that effect the reported amounts of assets and liabilities and the
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

    l.  Cash and Cash Equivalents

     The Company defines cash and cash equivalents to include cash on hand and
cash invested in short-term securities which have original maturities of less
than 90 days. Cash and cash equivalents are carried at cost which approximates
fair market value.

   m.  Stock-Based Compensation

     Effective January 1, 1996, the Company adopted the provisions of SFAS No.
123, "Accounting for Stock-Based Compensation." The Company has elected to
continue to account for stock options at intrinsic value with disclosure of the
effects of fair value accounting on net income and earnings per share on a pro
forma basis.

    n.  Interest Rate Caps

     Premiums paid for interest rate cap agreements are amortized to interest
expense over the terms of the cap. Unamortized premiums are included in other
assets in the Consolidated Balance Sheets. Amounts receivable, if any, under cap
agreements are accounted for as a reduction of interest expense.


                                       F-11

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

3. Debt

     Debt consists of the following:

<TABLE>
<CAPTION>
                                                                  December 31,
                                                           ------------------------------
                                                                1995           1996
                                                           -------------- ---------------
     <S>                                                      <C>             <C>
     10-1/8% Senior Subordinated Notes Due 2006 ...........   $     --        $165,000
     $100,000 New Credit Facility .........................         --           9,000
     Old Credit Agreement..................................     95,725              --
     Chrysler Notes........................................     14,772              --
     Real estate mortgages.................................     10,797          10,733
     Other.................................................        580              --
                                                              --------        --------
         Long-term debt....................................    121,874         184,733
         Less -- current portion...........................     (2,578)           (396)
                                                              --------        --------
         Long-term debt, net of current portion............   $119,296        $184,337
                                                              ========        ========
</TABLE>

     At December 31, 1995, the Company had two term loans, an acquisition credit
facility and a working capital facility (collectively, the "Old Credit
Agreement") of $125,000. The outstanding indebtedness under the Old Credit
Agreement was paid in full on October 1, 1996 with a portion of the net proceeds
from the sale of $165,000 of 10-1/8% Senior Subordinated Notes due 2006 (the
"Notes"). Interest on the facility was based, at the Company's option, on a
choice of base rates plus a margin. The margin varied depending on the base rate
selected.

     The Chrysler Notes were issued in 1990 with an original maturity date of
2000. A warrant was issued in connection with the Chrysler Notes to which
management assigned an initial value of $750 for financial reporting purposes
(see Note 5). The value of the warrant was being accounted for as an original
issue discount of the Chrysler Notes and was amortized as interest expense over
the life of the loan using the effective interest rate method. The Chrysler
Notes were paid in full with a portion of the net proceeds from the Notes.

     On September 30, 1996, Iron Mountain entered into a new $100 million
revolving credit facility (the "New Credit Facility"). The New Credit Facility
is a five year revolving credit facility maturing on September 30, 2001. At
December 31, 1996, the weighted average interest rate on outstanding borrowings
under the New Credit Facility was 8.0%.

     The New Credit Facility specifies certain minimum or maximum relationships
between operating cash flows (earnings before interest, taxes, depreciation,
amortization and extraordinary charges) and interest, total debt and fixed
charges. There are restrictions on dividends declared by the Company, sales or
pledging of assets, capital expenditures and changes in business and ownership;
cash dividends are effectively prohibited. As of December 31, 1996, the Company
was in compliance with all of its debt covenants. Loans under the New Credit
Facility are secured by the capital stock of all of the Company's subsidiaries.

     The interest rate on loans under the New Credit Facility varies, at the
Company's option, on a choice of base rates plus an applicable margin. The
applicable margin varies depending on the base rate selected and certain debt
ratios. The timing of interest payments also varies with the base rate selected.

     Under the New Credit Facility, the Company is required to maintain an
interest rate protection program. Pursuant to this requirement, the Company has
only limited involvement with derivative financial instruments and does not use
them for trading purposes. 

      Interest rate cap agreements are used to reduce the potential impact of
increases in interest rates on floating rate long-term debt. At December 31,
1995 and 1996, the Company was a party to three interest rate cap agreements,
each covering a notional amount of $10,000. One agreement expires on August 12,
1997 and the other two agreements expire on March 24, 1998. The agreements
entitle the Company to receive from counterparties, on a quarterly basis,
certain payments, if the three month LIBOR rate exceeds 7.5%.


                                       F-12

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

     The Company is exposed to credit losses in the event of nonperformance by
the counterparties to its interest rate cap agreements but has no off balance
sheet risk of accounting loss.

      On October 1, 1996, the Company issued $165 million of 10-1/8% Senior
Subordinated Notes due 2006. Interest on the Notes is payable semi-annually on
April 1 and October 1 commencing on April 1, 1997. The net proceeds were $160.1
million after underwriting discounts and commissions. The proceeds were used to
repay outstanding bank debt under the Old Credit Agreement, the Chrysler Notes
and certain other indebtedness, to fund the purchase price of an acquisition and
for general corporate purposes. In connection with the prepayment of such
indebtedness, the Company incurred an extraordinary charge of $3,539 not
including related tax benefit of $1,413, during the fourth quarter of 1996. The
charge consists of a prepayment penalty, the write-off of deferred financing
costs, original issue discount and loss on termination of interest rate
protection agreements.

     The Notes contain covenants and restrictions similar to, or less
restrictive than, the New Credit Facility. After September 30, 2001, and subject
to certain restrictions, the Company may, at its option, redeem any or all of
the Notes at face value, plus a premium ranging from approximately 2% to 9%
through September 30, 2004. Thereafter, the Notes may be redeemed at face value.
Additionally, under certain circumstances, including a change of control or
following certain asset sales, the holders of the Notes may require the Company
to repurchase the Notes.

     The Notes are fully and unconditionally guaranteed, on a joint and several
basis, on a senior subordinated basis, by all of the Company's direct and
indirect subsidiaries (the "Subsidiary Guarantors"). The Company is a holding
company, substantially all of the assets of which are the stock of the
Subsidiary Guarantors, and substantially all of the operations of which are
conducted by the Subsidiary Guarantors. Accordingly, the aggregate assets,
liabilities, earnings and equity of the Subsidiary Guarantors are substantially
equivalent to the assets, liabilities, earnings and equity of the Company on a
consolidated basis. Management of the Company believes that separate financial
statements of, and other disclosures with respect to, the Subsidiary Guarantors
are not meaningful or material to investors.

     The real estate mortgages consist of an $8,037, 10 year, 11% mortgage based
on 30 year amortization with a $7,495 balloon payment due October, 2000 and a
$3,000, 8% note that is payable in various installments commencing in 1997 and
maturing in November, 2006.

     Maturities of long-term debt are as follows:

                    Year                        Amount
              ----------------------------- ------------
              1997.........................     $    396
              1998.........................          379
              1999.........................          389
              2000.........................        7,794
              2001.........................        9,300
              Thereafter...................      166,475
                                               ---------
                                                $184,733
                                               =========

      Based on the borrowing rates currently available to the Company for loans
with similar terms and average maturities, the Company has estimated the
following fair values for its long-term debt as of December 31, 1996:

                                                   Carrying       Fair
                                                    Amount        Value
                                                  ---------     ---------
      New Credit Facility.....................    $  (9,000)    $  (9,000)
      Real estate mortgages...................      (10,733)      (10,137)
      10-1/8% Senior Subordinated Notes ......     (165,000)     (156,398)


                                       F-13
<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

4. Acquisitions

     During 1994, the Company purchased substantially all of the assets, and
assumed certain liabilities, of three separate records management businesses.
During 1995, the Company purchased substantially all of the assets, and assumed
certain liabilities, of four additional records management businesses and during
1996, the Company purchased substantially all of the assets, and assumed certain
liabilities, of another sixteen records management businesses. Each of these
acquisitions was accounted for using the purchase method of accounting and
accordingly, the results of operations for each acquisition have been included
in the consolidated results of the Company from the respective acquisition
dates. The excess of the purchase price over the underlying fair value of the
assets and liabilities of each acquisition has been assigned to goodwill
($2,484, $26,054 and $53,894 in 1994, 1995 and 1996, respectively) and is being
amortized over the estimated benefit period of 25 years. Funds used to make the
various acquisitions were provided through the Company's credit facilities and a
portion of the net proceeds from the Offering and the sale of the Notes. A
summary of the cash consideration (not including contingent payments of
approximately $4,000 based on the achievement of certain revenue targets in 1997
and 1998) and allocation of the purchase price as of the acquisition dates are
as follows:

<TABLE>
<CAPTION>
                                                             1994              1995            1996
                                                           --------         --------         ---------
<S>                                                        <C>              <C>              <C>      
      Fair value of assets acquired..............          $  3,223         $ 41,286         $  73,370
      Liabilities assumed........................              (377)          (8,238)           (4,874)
                                                           --------         --------         ---------
      Cash paid..................................          $  2,846         $ 33,048         $  68,496
                                                           ========         ========         =========
</TABLE>

     The following unaudited pro forma combined information shows the results of
the Company's operations for the years ended December 31, 1995 and 1996 as
though each of the completed acquisitions had occurred as of the beginning of
the period reported:

<TABLE>
<CAPTION>
                                                                                     1995                 1996
                                                                                 -------------        -------------
       <S>                                                                       <C>                  <C>
       Revenues .........................................................        $     140,900        $     154,076
       Loss before extraordinary charge .................................               (1,989)                (243)
       Net loss applicable to common stockholders .......................               (4,096)              (2,649)
       Loss per common and common equivalent share before
           extraordinary charge and accretion of put warrant ............                (0.26)               (0.02)
       Net loss per common and common equivalent share ..................                (0.53)               (0.27)
</TABLE>

     The pro forma results have been prepared for comparative purposes only and
are not necessarily indicative of the actual results of operations had the
acquisitions taken place as of the beginning of the period reported or the
results that may occur in the future. Furthermore, the pro forma results do not
give effect to all cost savings or incremental costs which may occur as a result
of the integration and consolidation of the companies. Certain acquisitions
completed in the fourth quarter of 1996 are not included in the pro forma
results as their effect was immaterial.

     In connection with the acquisitions completed in 1996, the Company has
undertaken certain restructurings of the acquired businesses. The restructuring
activities include certain reductions in staffing levels, elimination of
duplicate facilities and other costs associated with exiting certain activities
of the acquired businesses. In connection with these restructuring activities,
the Company established reserves of $1,883. These amounts were recorded as costs
of the acquisitions and were provided in accordance with Emerging Issues Task
Force Issue No. 95-3, "Recognition of Liabilities in Connection with a Purchase
Business Combination". During 1996, the Company expended $602 for restructuring
costs. These expenditures consisted primarily of severance costs, move costs and
costs relating to exited facilities. As of December 31, 1996, the Company had a
total of $1,340 accrued for restructuring costs on all of its acquisitions.


                                       F-14

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

5. Capital Stock, Redeemable Put Warrant and Stock Options

    a.  Capital Stock

     On February 6, 1996, the Company completed an initial public offering of
its Common Stock (the "Offering"). Pursuant to the Offering, the Company issued
2,350,000 shares of Common Stock - Voting.

     In connection with the Offering, the Board of Directors approved, and the
shareholders ratified, a recapitalization and the designation of three new
classes of stock as follows:

                                                            Authorized
   Class                                                      Shares
   ------------------------------------------------ --------------------
   Preferred stock, $.01 par value.................         2,000,000
   Common stock - voting, $.01 par value...........        13,000,000
   Common stock - non-voting, $.01 par value.......         1,000,000

     Upon consummation of the Offering, all shares of capital stock were
automatically converted into shares of Common Stock - Voting and, in the case of
one stockholder, Common Stock - Non-Voting. The number of common shares received
upon conversion were as follows:

<TABLE>
<CAPTION>
                                                                               Common
                                                                  ------------------------------------
                                                     Preferred         Voting            Non-Voting
                                                ----------------- ------------------ -----------------
  <S>                                                 <C>                <C>               <C>
  Series A1 and Series A3...................           50,000              987,314              --
  Series A2.................................           98,000            1,435,146         500,000
  Series C..................................          351,395            4,809,793              --
</TABLE>

     The following table summarizes the number of shares authorized, issued and
outstanding for each issue of the Company's capital stock as of December 31:

<TABLE>
<CAPTION>
                                                                              Number of Shares
                                                       ----------------------------------------------------------------
                                                                 Authorized                 Issued and Outstanding
                                                       -------------------------------- -------------------------------
Equity Type                              Par Value          1995            1996             1995            1996
- -------------------------------------- --------------- --------------- ---------------- --------------- ---------------
<S>                                         <C>            <C>              <C>                <C>           <C>
Series A1 preferred stock ...........       $.01                6,500               --           6,500              --
Series A2 preferred stock ...........       $.01               98,000               --          98,000              --
Series A3 preferred stock ...........       $.01               43,500               --          43,500              --
Series B preferred stock ............       $.01              148,000               --              --              --
Series C preferred stock ............       $.01              351,395               --         351,395              --
Preferred stock .....................       $.01                   --        2,000,000              --              --
Class A common stock ................       $.01           13,000,000               --          44,888              --
Class B common stock ................       $.01           10,300,000               --              --              --
Class C common stock ................       $.01                    1               --              --              --
Common stock-voting .................       $.01                   --       13,000,000              --       9,657,657
Common stock-non-voting..............       $.01                   --        1,000,000              --         477,295
</TABLE>

     In 1995, the Company declared a 15.4215-for-1 stock split of the Class A
and Class B Common Stock in the form of a stock dividend. All weighted average
common share and stock related data in the consolidated financial statements
have been retroactively restated to reflect the stock split.

    b.  Redeemable Put Warrant

     In connection with the issuance of the Chrysler Notes, the Company also
issued a put warrant, dated December 14, 1990 (the "Warrant"), exercisable for
444,385 shares of common stock for nominal consideration upon the occurrence of
certain specified events. On February 7, 1996, in connection with the Offering,
the Warrant was 

                                       F-15

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)


redeemed for $6,612. This Warrant has been accreted each year using the
effective interest rate method based on the Warrant's estimated redemption value
at its estimated redemption date of February 15, 1996 and is reflected as a
redeemable put warrant in the accompanying balance sheets.

    c.  Stock Options

     In September, 1991 the Company created a non-qualified stock option plan
pursuant to which up to 444,385 shares of Class A common stock of the Company
could be issued at the discretion of the Stock Option Committee to key
employees, consultants and directors.

     Effective November 30, 1995, the Board of Directors approved the adoption
of the 1995 Stock Incentive Plan (the "Stock Option Plan"), which replaced the
previous stock option plan. A total of 1,000,000 shares of Common Stock are
available for grant as options and other rights under the Stock Option Plan,
including the options issued under the 1991 plan.

     Effective December 21, 1995, the Board of Directors approved the 1995 Stock
Option Plan for Non-Employee Directors that permits non-employee Directors to
elect to receive all or a portion of their compensation in the form of Common
Stock. Directors electing to receive Common Stock will, as an incentive, receive
an amount of stock equivalent to 110% of the directors compensation otherwise
due to be paid in cash. During 1996, the Company issued 915 shares under the
plan. At December 31, 1996, there were 14,085 shares reserved for issuance under
the plan.


     The following is a summary of stock option transactions during the
applicable periods:

<TABLE>
<CAPTION>
                                                                   Weighted Average
                                                   Options          Exercise Price
                                             ----------------- ------------------------
<S>                                                <C>                   <C>
Options outstanding, December 31, 1993.....        286,618               $  6.85
  Canceled.................................        (25,134)                 6.48
                                                   -------
Options outstanding, December 31, 1994.....        261,484                  6.89
  Granted..................................         97,018                 12.58
  Exercised................................        (15,976)                12.58
  Canceled.................................         (8,219)                11.21
                                                   -------
Options outstanding, December 31, 1995.....        334,307                  8.16
  Granted..................................        453,854                 16.49
  Exercised................................         (6,896)                 9.58
  Canceled.................................        (18,404)                11.76
                                                    ------
Options outstanding, December 31, 1996.....        762,861                 13.02
                                                   =======
</TABLE>

     The stock options were granted with exercise prices equal to or greater
than the fair market value at the date of grant. The majority of options become
exercisable ratably over a period of five years unless the holder terminates
employment. As of December 31, 1996, 220,129 of the options outstanding were
exercisable at a weighted average exercise price of $7.06 per share. The number
of options available for grant at December 31, 1996 was 185,355.

     Effective January 1, 1996, the Company adopted the provisions of SFAS No.
123, "Accounting for Stock-Based Compensation." The Company has elected to
continue to account for stock options at intrinsic value with disclosure of fair
value accounting on net income (loss) and earnings (loss) per share on a pro
forma basis. Had the Company elected to recognize compensation cost based on the
fair value of the options granted at grant date as prescribed by SFAS No. 123,
net income (loss) and earnings (loss) per common and common equivalent share
would have been reduced to the pro forma amounts indicated in the table below:


                                       F-16

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

<TABLE>
<CAPTION>
                                                                                     Year Ended December 31,
                                                                               ---------------------------------
                                                                                   1995                 1996
                                                                               ------------         ------------
       <S>                                                                     <C>                  <C>
       Net loss applicable to common stockholders -- as reported ...           $  (1,859)           $  (2,049)
       Net loss applicable to common stockholders -- pro forma .....              (2,058)              (2,991)
       Net loss per common and common equivalent
           share -- as reported ....................................               (0.24)               (0.20)
        Net loss per common and common equivalent
           share -- pro forma ......................................               (0.26)               (0.30)
</TABLE>

    Consistent with SFAS No. 123, pro forma net income (loss) and earnings
(loss) per share have not been calculated for options granted prior to January
1, 1995. Accordingly, pro forma compensation cost may not be representative of
that to be expected in future years.

    The weighted average fair value of options granted in 1995 and 1996 was
$5.22 and $7.38 per share, respectively. The values were estimated on the date
of grant using the Black-Scholes option pricing model. The following table
summarizes the weighted average assumptions used for grants in the year ended
December 31:

   Assumption                                1995           1996
   ------------------------------------ --------------- --------------
   Expected volatility ................     24.2%           24.2%
   Risk free interest rate ............     7.51            6.34
   Expected dividend yield ............      N/A             N/A
   Expected life of the option  .......     6.3 yrs         7.5 yrs

     At December 31, 1996, the options outstanding were exercisable at prices
ranging from $6.48 to $30.38 per share and had a weighted average remaining
contractual life of 7.8 years.

6. Income Taxes

     The Company accounts for income taxes in accordance with SFAS No. 109 which
requires the recognition of deferred tax assets and liabilities for the expected
tax consequences of temporary differences between the tax and financial
reporting bases of assets and liabilities.

     The tax effects of temporary differences that give rise to significant
portions of the deferred tax assets and deferred tax liabilities are presented
below:

<TABLE>
<CAPTION>
                                                                               December 31,
                                                                      ----------------------------
                                                                         1995              1996
                                                                      ----------       -----------
     <S>                                                              <C>              <C>
     Accrued liabilities........................................      $    1,585       $     1,757
     Accrued rent...............................................           3,462             3,056
     Net operating loss carryforwards...........................           2,522             4,751
     AMT credit.................................................             628               587
     Deferred income............................................             360                --
     Other......................................................           1,150             1,719
                                                                      ----------       -----------
           Gross deferred tax assets............................           9,707            11,870
                                                                      ----------       -----------
     Other assets principally due to differences in
        amortization............................................          (2,051)           (2,150)
     Plant and equipment, principally due to
        differences in depreciation.............................          (7,201)           (7,039)
     Customer acquisition costs.................................          (1,716)           (2,337)
     Other......................................................            (417)               --
                                                                      -----------      -----------
           Gross deferred tax liabilities.......................         (11,385)          (11,526)
                                                                      ----------       -----------
                   Net deferred tax asset (liability)...........      $   (1,678)      $       344
                                                                      ==========       ===========
</TABLE>

    At December 31, 1996, a non-current deferred tax asset of $987 is included
in Other Assets in the accompanying Balance Sheets.

                                       F-17


<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)


     The Company and its subsidiaries file a consolidated Federal income tax
return. The provision for income taxes consists of the following components:

<TABLE>
<CAPTION>
                                                     Years ended December 31,
                                             ----------------------------------------
                                                1994            1995           1996
                                             ---------       ---------      ---------
    <S>                                      <C>             <C>            <C>      
    Federal -- current..................     $      68       $     422      $     958
    Federal -- deferred.................         1,416             837             57
    State -- current....................           175              96          1,450
    State -- deferred...................           298             342         (1,030)
                                             ---------       ---------      ---------
                                             $   1,957       $   1,697      $   1,435
                                             =========       =========      =========
</TABLE>

     A reconciliation of total income tax expense and the amount computed by
applying the US Federal income tax rate of 34% to income before income taxes is
as follows:

<TABLE>
<CAPTION>
                                                                     1994           1995            1996
                                                                   --------       --------        --------
       <S>                                                         <C>            <C>             <C>      
       Computed "expected" tax provision...................        $  1,102       $    661        $    609
       Increase in income taxes resulting from:
         State taxes (net of federal tax benefit)..........             312            289             278
         Non-deductible goodwill
            amortization...................................             521            843             602
         Other.............................................              22            (96)            (54)
                                                                   --------       --------        --------
                                                                   $  1,957       $  1,697        $  1,435
                                                                   ========       ========        ========
</TABLE>

     The Company has estimated Federal net operating loss carryforwards of
$11,510 at December 31, 1996 to reduce future Federal income taxes, if any,
which begin to expire in 2005. The Company also has estimated state net
operating loss carryforwards of approximately $3,610 to reduce future state
income taxes, if any. Additionally, the Company has alternative minimum tax
credit carryforwards of $587 which have no expiration date and are available to
reduce future income taxes, if any.

                                      F-18
<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)


7. Quarterly Results of Operations (Unaudited)

<TABLE>
<CAPTION>
Quarter Ended                                          Mar. 31             June 30             Sept. 30            Dec. 31
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>                <C>                 <C>                 <C>
1995
Revenues .......................................        $  24,338          $   25,886          $    26,570         $   27,642
Gross profit ...................................           12,114              12,998               13,682             13,365
Net loss applicable to common
    stockholders - (1) .........................             (274)               (259) (4)            (822)  (5)         (504) (6)
Net loss per share applicable to
    common stockholders ........................            (0.04)              (0.03)               (0.11)             (0.06)
- -------------------------------------------------------------------------------------------------------------------------------
1996
Revenues........................................        $  31,028          $   32,922          $    36,019         $   38,749
Gross profit ...................................           15,360              16,207               17,311             19,093
Income (loss) before extraordinary
    charge .....................................              286                 411                   --               (340)
Net income (loss) applicable to
    common stockholders ........................                6 (2)             411 (7)               --             (2,466) (3)
Income (loss) per share before
    extraordinary charge applicable to
    common stockholders ........................             0.00                0.04                 0.00              (0.03)
Net income (loss) per share applicable
    to common stockholders .....................             0.00                0.04                 0.00              (0.23)
</TABLE>

- ----------------------------
(1)  Includes charges of $452, $501, $554 and $600 respectively, related to the
     accretion of the put warrant.
(2)  Includes a charge of $280, related to the accretion of the put warrant.
(3)  Includes an extraordinary charge of $2,126, net of tax benefit, related to
     the prepayment of certain indebtedness.
(4)  Includes a $360 after tax charge for litigation.
(5)  Includes a $900 write-down of the goodwill of a subsidiary.
(6)  Includes a $300 after tax charge related to the relocation of the corporate
     accounting function from Los Angeles to Boston.
(7)  Includes a $193 after tax charge related to the relocation of the corporate
     accounting function from Los Angeles to Boston.

8. Commitments and Contingencies

    a. Leases

     Iron Mountain leases most of its facilities under various operating leases.
A majority of these leases have renewal options of five to ten years and have
either fixed or Consumer Price Index escalation clauses. The Company also leases
equipment under operating leases, primarily computers which have an average
lease life of three years. Trucks and office equipment are also leased and have
remaining lease lives ranging from one to seven years. Rent expense was $13,555,
$15,661, and $21,114 for the years ended December 31, 1994, 1995 and 1996,
respectively.

                                       F-19

<PAGE>

                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)



     Minimum future lease payments are as follows:

                    Year                                   Operating
                  -------------------------------------    ---------
                  1997.................................    $  20,210
                  1998.................................       17,397
                  1999.................................       17,106
                  2000.................................       16,896
                  2001.................................       16,242
                  Thereafter...........................       80,332
                                                           ---------
                  Total minimum lease payments.........    $ 168,183
                                                           =========

    b. Litigation

     Iron Mountain is presently involved as a defendant in various litigation
which has occurred in the normal course of business. Management believes it has
meritorious defenses in all such actions, and in any event, the amount of
damages, if such matters were decided adversely, would not have a material
adverse effect on Iron Mountain's financial condition or results of operations.

    c. Other

     The Company may be responsible for environmental clean-up costs at certain
of its facilities. Estimated costs of approximately $800 to perform the
necessary remediation work are included in other liabilities in the accompanying
balance sheets. Management believes the ultimate outcome of the above issue will
not have a material adverse effect on Iron Mountain's financial condition or
results of operations.

9. Related Party Transactions

     Iron Mountain leases space to an affiliated company, Schooner Capital
Corporation (Schooner) for its corporate headquarters located in Boston,
Massachusetts. For the years ended December 31, 1994, 1995 and 1996, Schooner
paid Iron Mountain rent totaling $58, $49 and $68, respectively. Iron Mountain
leases one facility from a landlord which is a related party. Total rental
payments for the years ended December 31, 1994, 1995 and 1996 for this facility
totaled $88, $93 and $94, respectively. In the opinion of management, both of
these leases were entered into at market prices and terms.

10. Profit Sharing Retirement Plan

     The Company has a defined contribution plan which covers all non-union
employees meeting certain service requirements. Eligible employees may elect to
defer from 1 to 15% of compensation per pay period up to the amount allowed by
the Internal Revenue Code. The Company makes matching contributions based on the
amount of the employee contribution and years of credited service, according to
a schedule as described in the Plan documents. The Company has expensed $168,
$276 and $419 for the years ended December 31, 1994, 1995 and 1996,
respectively.

11. Subsequent Events

    a.  Acquisitions

      Subsequent to December 31, 1996, the Company agreed to acquire
substantially all of the assets and assume certain liabilities of five records
management businesses for approximately $31,600 (not including contingent
payments of up to approximately $800 based on the achievement of certain revenue
targets in 1997 and 1998), in transactions accounted for under the purchase
method. As of March 12, 1997, four of these transactions had been consummated.
The fifth acquisition is expected to close during the second quarter of 1997.


                                       F-20

<PAGE>


                           IRON MOUNTAIN INCORPORATED
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (Continued)

    b.  Agreement to Merge with Safesite Records Management Corporation

     In addition to the acquisitions described above, in February 1997, the
Company announced that it had reached a definitive agreement to merge with
Safesite Records Management Corporation ("Safesite"), a privately held company
based in the Boston, Massachusetts area.

     Safesite stockholders and holders of exercisable options will receive Iron
Mountain common stock valued at approximately $50 million, plus approximately
$12 million in cash. The number of shares of Iron Mountain common stock will be
determined based on its market price, using a "collar" with a floor of $26.00
and a ceiling of $31.00. The transaction is subject to regulatory approval and
the approval of Safesite's stockholders. The merger is expected to be completed
during the second quarter of 1997.

    c.  Amendment and Restatement of the New Credit Facility

     On March 3, 1997, the Company amended the New Credit Facility, increasing
the facility from $100 million to $150 million. In addition, certain other terms
of the New Credit Facility, including interest rates, commitment fees and
financial covenants were amended and restated.

    d.  Actions of the Board of Directors

     On March 3, 1997, the Board of Directors:

     (1) Voted, subject to stockholder approval, to increase the number of
         authorized shares of Common Stock-Voting from 13,000,000 shares to
         20,000,000 shares.

     (2) Increased, subject to stockholder approval, the number of shares
         available for grant as options under the 1995 Stock Incentive Plan by
         400,000.

     (3) Amended the 1995 Stock Incentive Plan to, among other things,
         incorporate the provisions of the 1995 Non-Employee Directors' Plan.

     (4) Granted 22,900 options to various employees to purchase common stock at
         fair market value at the date of grant.

     (5) Voted to terminate the 1995 Non-Employee Directors' Plan as of June 30,
         1997.

    e.  Facility Fire


      In March 1997, Iron Mountain experienced three fires that resulted in
extensive damage to two of its records management facilities in South Brunswick,
New Jersey. The affected facilities represented less than three percent of
revenues and less than two percent of EBITDA for 1996. Management believes that
insurance will cover substantially all of Iron Mountain's property and business
interruption losses relating to the fires. However, Iron Mountain may incur
costs as a result of the fires which will not be covered by insurance.
Management is unable to estimate at this time the magnitude of such costs. The
claims process is lengthy and its outcome cannot be predicted with certainty.
Based on its present assessment of the situation, management does not believe
that the fires will have a material adverse effect on Iron Mountain's financial
condition or results of operations, although there can be no assurance in this
regard.



                                       F-21
<PAGE>

                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Partners Nashville Vault Company, Ltd.:

We have audited the accompanying balance sheet of Nashville Vault Company,
Ltd. (a Tennessee limited partnership) as of December 31, 1995, and the
related statements of income, partners' capital and cash flows for the year
then ended. These financial statements are the responsibility of the
Partnership's management. Our responsibility is to express an opinion on
these financial statements based on our audit.

We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.
An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audit provides a
reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Nashville Vault Company,
Ltd. at December 31, 1995, and the results of its operations and its cash
flows for the year then ended, in conformity with generally accepted
accounting principles.

                                                       Geo. S. Olive & Co. LLC

Indianapolis, Indiana
January 16, 1996

                                     F-22
<PAGE>

                         NASHVILLE VAULT COMPANY, LTD.
                      (A TENNESSEE LIMITED PARTNERSHIP)
                                BALANCE SHEET

                                             December 31,
                                                 1995
                                             ------------
                  ASSETS
Current assets:
Cash and cash equivalents ...............     $  275,806
Accounts receivable--trade ..............        180,609
Prepaid expenses ........................             60
                                               ----------
  Total current assets ..................        456,475
Property and equipment:
Building and improvements ...............      1,148,652
Furniture and equipment .................        269,798
Vehicles ................................         88,386
                                               ----------
                                               1,506,836
Accumulated depreciation and amortization       (833,520)
                                               ----------
                                                 673,316
                                               ----------
                                              $1,129,791
                                               ==========
               LIABILITIES
Current liabilities:
Accounts payable and accrued expenses ...     $  104,662
Deferred revenue ........................         43,253
Convertible notes payable ...............        325,000
                                               ----------
  Total current liabilities .............        472,915
PARTNERS' CAPITAL .......................        656,876
                                               ----------
                                              $1,129,791
                                               ==========

  The accompanying notes are an integral part of these financial statements.

                                     F-23
<PAGE>

                         NASHVILLE VAULT COMPANY, LTD.
                        (A TENNESSEE LIMITED PARTNERSHIP)
                               STATEMENT OF INCOME

                                                            Year Ended
                                                           December 31,
                                                               1995
                                                         ----------------
Revenue:
  Storage  ...........................................      $  636,302
  Service and storage material sales  ................         738,338
                                                            --------------
     Total revenue  ..................................       1,374,640
Operating expenses:
  Cost of sales (excluding depreciation)  ............         499,389
  Selling, general and administrative expenses  ......         326,674
  Depreciation and amortization  .....................         122,021
                                                            --------------
     Total operating expenses  .......................         948,084
                                                            --------------
Operating income  ....................................         426,556
Other income (expense):
  Interest income  ...................................          18,994
  Interest expense  ..................................         (80,022)
                                                            --------------
                                                               (61,028)
                                                            --------------
Net income  ..........................................      $  365,528
                                                            ==============
            STATEMENT OF PARTNERS' CAPITAL

Balance, Beginning of Year  ..........................      $  306,499
  Net income  ........................................         365,528
  Cash distributions  ................................         (15,151)
                                                            --------------
Balance, End of Year  ................................      $  656,876
                                                            ==============

  The accompanying notes are an integral part of these financial statements.

                                     F-24
<PAGE>

                         NASHVILLE VAULT COMPANY, LTD.

                      (A TENNESSEE LIMITED PARTNERSHIP)

                           STATEMENT OF CASH FLOWS

                                                                   Year Ended
                                                                  December 31,
                                                                      1995
                                                                ----------------
Operating Activities:
  Net income ...............................................       $ 365,528
  Items not affecting net cash provided by operating
    activities:
     Depreciation and amortization .........................         122,021
     Gain on disposal of property and equipment ............            (141)
     Changes in other items:
        Accounts receivable--trade .........................            (333)
        Prepaid expenses ...................................          16,761
        Accounts payable and accrued expenses ..............          41,230
        Deferred revenue ...................................          (2,012)
                                                                  --------------
        Net cash provided by operating activities ..........         543,054
Investing Activities:
  Purchase of property and equipment .......................         (30,908)
  Proceeds from sale of property and equipment .............           2,300
  Proceeds from sale of investments ........................         310,000
  Purchase of investments ..................................        (210,000)
                                                                  --------------
        Net cash provided by investing activities ..........          71,392
Financing Activities:
  Payments on debt .........................................        (489,969)
  Cash distribution to partners ............................         (15,151)
                                                                  --------------
        Net cash used by financing activities ..............        (505,120)
                                                                  --------------
Net increase in Cash and Cash Equivalents ..................         109,326
Cash and Cash Equivalents, Beginning of Year ...............         166,480
                                                                  --------------
Cash and Cash Equivalents, End of Year .....................       $ 275,806
                                                                  ==============
Supplemental Cash Flows Information:
  Cash paid during the year for interest ...................       $  80,022
  Equipment acquired with installment note .................          48,854

  The accompanying notes are an integral part of these financial statements.

                                     F-25
<PAGE>

                         NASHVILLE VAULT COMPANY, LTD.
                        (A TENNESSEE LIMITED PARTNERSHIP)
                          NOTES TO FINANCIAL STATEMENTS

1. Nature of Operations

   Nashville Vault Company, Ltd. (the "Partnership") is a limited partnership
formed pursuant to the Uniform Limited Partnership Act of Tennessee on
February 21, 1985 to renovate, own and operate a maximum security facility
containing safe deposit boxes and secured storage vaults in Nashville.

   The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statement and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

2. Summary of Significant Accounting Policies

Cash Equivalents

   The Partnership considers all liquid investments with original maturities
of three months or less to be cash equivalents. At December 31, 1995, cash
equivalents consisted of savings accounts. From time to time during the year,
the Partnership's cash accounts exceeded federally insured limits.

Property and Equipment

   Property and equipment are carried at cost, and such cost is being
recovered using straight-line and accelerated methods of depreciation, with
useful lives of 15 to 31.5 years for building and improvements, 5 to 7 years
for furniture and equipment, and 5 years for vehicles.

Revenue Recognition

   Revenue is recognized when earned. Revenue billed in advance is shown as
deferred revenue.

Advertising Costs

   The Partnership expenses advertising costs as incurred. Advertising costs
were $6,787 in 1995.

Income Tax Status

   Since the entity is a partnership, it is not subject to federal and state
income taxes and, accordingly, no provision for federal and state taxes on
income is required. The partners include their allocable share of the net
income or loss in their respective income tax returns.

3. Convertible Notes Payable

   The 12% convertible notes, payable to certain limited partners, are
convertible into limited partnership units at a conversion price of $12,500
for one limited partnership unit. On January 1, 1996, all convertible notes
were converted into 26 limited partnership units.

4. Employee Benefits

   On January 1, 1994, the Partnership established a 401(k) defined
contribution plan for the benefit of substantially all of its employees,
which allows for both employee and Partnership contributions. The Partnership
contribution consists of a matching contribution of 25 percent of employee
contributions, up to 3.75 percent of eligible employee compensation. The
Partnership contribution to the plan was $3,924 for 1995. This plan was
terminated on December 31, 1995.

                                     F-26
<PAGE>

                         NASHVILLE VAULT COMPANY, LTD.
                        (A TENNESSEE LIMITED PARTNERSHIP)

                 Notes to the Financial Statements--(continued)

5. Partnership Agreement

   The Agreement of Limited Partnership (as amended) specifies the allocation
of profits, losses, and distributions to be allocated 1% to the General
Partner and 99% to the Investor Limited Partners.

   Under the agreement, the limited partners are not liable for any debts of
the Partnership nor are they required to make any additional capital
contributions.

6. Related Party Transactions

   The Partnership leases the ground on which its building is located from
family members of stockholders of the General Partner and pays real estate
taxes and other related expenses under the lease which expires November 30,
2000. On January 1, 1996, the Partnership exercised an option to purchase the
land for $250,000. Rent expense in 1995 was $29,000.

   The General Partner, USA Vault Corporation, is guaranteed a monthly
management fee for the operation of the Partnership. The fee begins at $1,000
per month increasing to $2,000 and $3,000 monthly when annual gross revenue
exceeds $200,000 and $300,000, respectively. The Partnership incurred
management fees to the General Partner of $32,000 in 1995.

   The Partnership pays fees to a company owned by the president of USA Vault
Corporation for accounting and bookkeeping services. Fees paid totaled
$12,000 for 1995.

7. Major Customer

   Sales from a major customer approximated 10% of sales and 19% of accounts
receivable at December 31, 1995.

8. Subsequent Event

   On January 4, 1996, the Partnership sold, effective January 1, 1996,
substantially all of its operating assets for approximately $3,450,000 to
Iron Mountain Record Management, Inc.

                                     F-27
<PAGE>

                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Directors
 Iron Mountain Incorporated:


We have audited the accompanying balance sheet of International Record
Storage and Retrieval Service, Inc. as of December 31, 1995 and the related
statements of operations, stockholders' deficit, and cash flows for the year
then ended. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audit.

We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.
An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audit provides a
reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of International Record Storage
and Retrieval Service, Inc. as of December 31, 1995, and the results of its
operations and its cash flows for the year then ended in conformity with
generally accepted accounting principles.

                                               Rothstein, Kass & Company, P.C.

Roseland, New Jersey
July 19, 1996

                                     F-28
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                                 BALANCE SHEETS


<TABLE>
<CAPTION>
                                                               December
                                                                  31,         June 30,
                                                                 1995           1996
                                                               ----------   ------------
                                                                            (Unaudited)
<S>                                                          <C>            <C>
                                     ASSETS
Current assets:
  Cash ...................................................   $   134,340    $    66,151
  Accounts receivable, less allowance for doubtful
  accounts   of $16,000 in 1995 and 1996  .................      255,276        264,020
  Inventories ............................................        13,505         12,997
  Prepaid expenses and other .............................        24,690         33,576
                                                                --------      ----------
    Total current assets .................................       427,811        376,744
Equipment and improvements, less accumulated depreciation
  of $244,831 in 1995 and $277,428 in 1996  ...............      437,522        452,340
Deferred income taxes ....................................       171,000        160,000
Other assets .............................................        21,667         21,667
                                                                --------      ----------
                                                             $ 1,058,000    $ 1,010,751
                                                                ========      ==========
                    LIABILITIES AND STOCKHOLDERS' DEFICIENCY
Current liabilities:
  Current portion of long-term debt ......................   $    13,474    $    14,459
  Accounts payable .......................................         5,449         31,757
  Accrued expenses .......................................        62,558         69,714
  Due affiliates .........................................       617,173        513,261
  Deferred income ........................................        86,096         89,529
  Deferred compensation, current portion .................        40,401         41,940
                                                                --------      ----------
    Total current liabilities ............................       825,151        760,660
                                                                --------      ----------
Notes payable, net of current portion ....................         7,572             --
Deferred compensation, net of current portion ............       772,518        751,156
Deferred rent ............................................       236,035        233,254
Commitments and contingency
Stockholders' deficiency:
  Common stock, no par value, authorized, issued and
    outstanding 100 shares  ...............................          100            100
  Additional paid-in capital .............................       970,792        970,792
  Accumulated deficit ....................................    (1,754,168)    (1,705,211)
                                                                --------      ----------
    Total stockholders' deficiency .......................      (783,276)      (734,319)
                                                                --------      ----------
                                                             $ 1,058,000    $ 1,010,751
                                                                ========      ==========
</TABLE>

See independent public accountants' report and notes to financial statements.


                                     F-29
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                STATEMENTS OF OPERATIONS AND ACCUMULATED DEFICIT
<TABLE>
<CAPTION>
                                                Year
                                               Ended           Six Months Ended
                                              December              June 30,
                                                31,        ---------------------------
                                                1995           1995           1996
                                             -----------    -----------   ------------
                                                           (Unaudited)    (Unaudited)
<S>                                         <C>            <C>            <C>
Revenues:
 Storage ...............................    $   962,463    $   462,275    $   528,604
 Service and storage material sales ....        620,428        322,215        312,739
                                              ---------      ---------      ----------
   Total revenues ......................      1,582,891        784,490        841,343
                                              ---------      ---------      ----------
Operating expenses:
 Costs of sales (excluding depreciation)        790,127        380,347        430,969
 Selling, general and administrative ...        427,748        212,704        247,085
 Depreciation and amortization .........         72,723         36,065         34,741
                                              ---------      ---------      ----------
   Total operating expenses ............      1,290,598        629,116        712,795
                                              ---------      ---------      ----------
Operating income .......................        292,293        155,374        128,548
Interest expense .......................         66,681         34,536         32,591
                                              ---------      ---------      ----------
Income before provision for income taxes        225,612        120,838         95,957
Provision for income taxes .............         21,000         13,000         11,000
                                              ---------      ---------      ----------
Net income .............................        204,612        107,838         84,957
Accumulated deficit:
Beginning of period ....................     (1,908,780)    (1,908,780)    (1,754,168)
Dividends ..............................        (50,000)            --        (36,000)
                                              ---------      ---------      ----------
End of period ..........................    $(1,754,168)   $(1,800,942)   $(1,705,211)
                                              =========      =========      ==========
</TABLE>

See independent public accountants' report and notes to financial statements.

                                     F-30
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                            STATEMENTS OF CASH FLOWS
<TABLE>
<CAPTION>
                                                             Year
                                                             Ended         Six Months Ended
                                                           December            June 30,
                                                              31,       ----------------------
                                                             1995         1995         1996
                                                           ----------    --------   ----------
                                                                     (Unaudited)   (Unaudited)
<S>                                                        <C>          <C>         <C>
Cash Flows from Operating Activities:
 Net income ..........................................     $ 204,612    $107,838    $  84,957
 Adjustments to reconcile net income to net cash
   provided by operating activities:
  Provision for doubtful accounts ....................         8,000       8,000           --
  Depreciation .......................................        72,723      36,065       34,741
  Provision for deferred income taxes ................        21,000      13,000       11,000
  Gain on disposal of property and equipment .........        (7,468)     (7,468)          --
  Increase (decrease) in cash attributable to changes
   in assets and liabilities:
   Accounts receivable ...............................      (102,421)    (82,045)      (8,744)
   Inventories .......................................         1,825      (4,824)         508
   Prepaid expenses and other ........................       (22,921)    (33,881)      (8,886)
   Accounts payable ..................................        (8,110)     40,228       26,308
   Accrued expenses ..................................        42,810      27,031        7,156
   Deferred income ...................................        13,016       8,074        3,433
   Deferred compensation and other liabilities .......       (50,195)    (31,099)     (19,823)
   Deferred rent .....................................        20,452       5,281       (2,781)
                                                            --------      ------      --------
Net Cash Provided by Operating Activities ............       193,323      86,200      127,869
                                                            --------      ------      --------
Cash Flows from Investing Activities:
 Proceeds from the sale of property and equipment ....        17,565      17,565           --
 Acquisitions of property and equipment ..............       (67,810)    (67,027)     (49,559)
                                                            --------      ------      --------
Net Cash used in Investing Activities ................       (50,245)    (49,462)     (49,559)
                                                            --------      ------      --------
Cash Flow from Financing Activities:
 Repayment of notes payable ..........................       (59,089)    (42,814)      (6,587)
 Advances from (repayments to) affiliates ............        81,310      61,673     (103,912)
 Dividends paid ......................................       (50,000)         --      (36,000)
                                                            --------      ------      --------
Net Cash Provided by (used in) Financing Activities ..       (27,779)     18,859     (146,499)
                                                            --------      ------      --------
Increase (Decrease) in Cash ..........................       115,299      55,597      (68,189)
Cash, beginning of period ............................        19,041      19,041      134,340
                                                            --------      ------      --------
Cash, end of period ..................................     $ 134,340    $ 74,638    $  66,151
                                                            ========      ======      ========
Supplemental Disclosure of Cash Flow Information, cash                  $
  paid during the period for interest ................     $  66,681      34,536    $  32,591
                                                            ========      ======      ========
</TABLE>

See independent public accountants' report and notes to financial statements.

                                     F-31
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                          NOTES TO FINANCIAL STATEMENTS

NOTE 1--NATURE OF BUSINESS:

   The Company is engaged principally in the storage of records for customers
in the New Jersey-New York area and providing ancillary services in
conjunction with such records.

NOTE 2--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

   Use of Estimates

   The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

   Revenue Recognition

   Storage and service revenues are recognized in the month the respective
service is provided. Storage material sales are recognized when shipped to
the customer. The Company invoices storage charges to its customers in
advance and these advanced billings are recorded as accounts receivable and
the related revenues are included as deferred income in the accompanying
financial statements.

   Inventories

   Inventories are carried at the lower of cost or market using the first-in
first-out basis and are comprised primarily of cartons.

   Income Taxes

   The Company has elected to be treated as an "S" Corporation under the
applicable sections of the Internal Revenue Code. Under these sections,
corporate income or loss is allocated to the stockholders for inclusion in
their personal income tax returns. Accordingly, there is no provision for
federal income tax in the accompanying financial statements. State income
taxes are recorded in accordance with Statement of Financial Accounting
Standards
No. 109.

   Equipment and Improvements

   Equipment and improvements are stated at cost and depreciated using the
straight-line method with the following useful lives:

   Office Equipment  ....................................     5 years
   Transportation equipment  ............................     5 to 10 years
   Shelving and warehouse improvements  .................     10 to 15 years

   Impairment of Long-Lived Assets

   The Company periodically assesses the recoverability of the carrying
amounts of long-lived assets, including intangible assets. A loss is
recognized when expected undiscounted future cash flows are less than the
carrying amount of the asset. The impairment loss is the difference by which
the carrying amount of the asset exceeds its fair value.

   Deferred Rent

   The Company's lease for its building used in the storage of records has
fixed escalation clauses which require the normalization of rental expense
over the life of the lease, resulting in deferred rent being reflected in the
accompanying balance sheets.

                                     F-32
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)

NOTE 2--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED):

   Fair Value of Financial Instruments

   The fair value of the Company's assets and liabilities which qualify as
financial instruments under Statement of Financial Accounting Standards (SFAS)
No. 107, "Disclosures about Fair Value of Financial Instruments", approximates
the carrying amounts presented in the balance sheets.

   Unaudited Financial Statements

   The unaudited financial statements included herein have been prepared in
accordance with generally accepted accounting principles. In the opinion of
management, the unaudited financial statements include all adjustments of a
normal and recurring nature which are necessary for a fair presentation. The
results of operations for the six months ended June 30, 1995 and 1996 are not
necessarily indicative of the results expected for the full year.

NOTE 3--EQUIPMENT AND IMPROVEMENTS:

   Equipment and improvements consist of the following:

                                                    December
                                                       31,        June 30,
                                                      1995          1996
                                                    ----------   ----------
                                                                (Unaudited)
   Office equipment  ...........................    $  97,919     $ 106,427
   Transportation equipment  ...................      108,217       108,217
   Shelving and warehouse improvements  ........      476,217       515,124
                                                      --------      --------
                                                      682,353       729,768
   Less accumulated depreciation  ..............     (244,831)     (277,428)
                                                      --------      --------
                                                    $ 437,522     $ 452,340
                                                      ========      ========

NOTE 4--NOTES PAYABLE:

   Long-term debt consists of various loans payable in monthly installments
of approximately $1,200 including interest at rates ranging between 8.4% and
10.2% with the final payment June 1997. The loans are collateralized by
certain equipment.

   Aggregate principal payment requirements in each of the years subsequent
to December 31, 1995 are as follows:

   1996  ................................................    $13,474
   1997  ................................................      7,572

NOTE 5--RELATED PARTY TRANSACTIONS:

   The Company is affiliated, through common ownership, with a real estate
management company, International Management Services, Inc. (IMS). IMS
provides certain administrative services to the Company under agreements
designed to reimburse IMS for the approximate cost of providing such
services. Amounts due affiliates are non-interest bearing and have no
specific repayment terms.

   The Company incurred charges for management fees to IMS of approximately
$90,000 for the year ended December 31, 1995 and $44,000 and $50,000 for the
six months ended June 30, 1995 (unaudited) and 1996 (unaudited),
respectively.

                                     F-33
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                 NOTES TO FINANCIAL STATEMENTS -- (Continued)

NOTE 6--DEFERRED COMPENSATION:

   The Company is obligated under an Income Continuation agreement dated
October 1, 1994 with a former employee providing for a payment of $100,000
annually for the life of the employee. In 1994, the Company recorded an
expense of $864,297 representing the present value of the benefits for the
employee's life expectancy discounted at the rate of 7.5% per annum. Payments
commenced in September 1994 and amounted to $100,000 for the year ended
December 31, 1995 and $50,000 for each of the six month periods ended June
30, 1995 (unaudited) and 1996 (unaudited).

NOTE 7--INCOME TAXES:

   The provision for income taxes in the accompanying statements of
operations consists of the following:

                                         Year
                                         Ended          Six Months Ended
                                       December             June 30,
                                          31,        ----------------------
                                         1995         1995         1996
                                       ----------    --------   ----------
                                                  (Unaudited)  (Unaudited)
    State income taxes deferred  ...     $21,000      $13,000      $11,000
                                         ========      ======      ========

   A reconciliation of total income tax expense and the amount computed by
applying the state income tax rate of 9% to income before income taxes is as
follows:

                                       Year
                                       Ended         Six Months Ended
                                     December            June 30,
                                        31,       ----------------------
                                       1995         1995         1996
                                     ----------    --------   ----------
                                                (Unaudited)  (Unaudited)
   Computed "expected" tax
     provision ..................     $20,000      $11,000      $ 9,000
   Other  .......................       1,000        2,000        2,000
                                       --------      ------      --------
                                      $21,000      $13,000      $11,000
                                       ========      ======      ========

   The Company has approximately $1,000,000 of net operating loss
carryforwards for state income tax purposes at December 31, 1995. These
carryforwards, which management expects will be fully utilized, expire
through the year 2000.

   The components of the Company's deferred tax assets and liabilities are as
follows:

                                                      Year           Six
                                                      Ended        Months
                                                    December        Ended
                                                       31,        June 30,
                                                      1995          1996
                                                    ----------   ----------
                                                                (Unaudited)
   Deferred Tax Assets:
    Tax benefit attributable to:
     Net operating loss carryforwards  .........    $ 89,000      $ 80,000
     Deferred rent  ............................      21,000        21,000
     Deferred compensation  ....................      73,000        71,000
     Other  ....................................       2,000         2,000
    Deferred tax liability, tax depreciation in
     excess of book depreciation  ..............     (14,000)      (14,000)
                                                      --------      --------
    Net Deferred Tax Asset  ....................    $171,000      $160,000
                                                      ========      ========

                                     F-34
<PAGE>

            INTERNATIONAL RECORD STORAGE AND RETRIEVAL SERVICE, INC.
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)

NOTE 8--RETIREMENT PLANS:

   The Company maintains a 401(k) plan for the benefit of its employees. The
Company contributes to the plan annually, at their discretion, up to 4% of
each participant's compensation. The expense amounted to $4,311 for the year
ended December 31, 1995 and $1,960 and $1,839 for the six months ended June
30, 1995 (unaudited) and 1996 (unaudited), respectively.

NOTE 9--LEASE COMMITMENTS:

   The Company occupies general office and warehouse facilities under an
operating lease expiring December 31, 2002, providing for minimum annual
rentals as follows:

 Year ending
 December 31,
   1996  ................................................   $  318,000
   1997  ................................................      318,000
   1998  ................................................      318,000
   1999  ................................................      318,000
   2000  ................................................      350,000
   Thereafter  ..........................................      700,000
                                                               --------
                                                            $2,322,000
                                                               ========

   Rent expense for facilities charged to operations was $273,791 for the
year ended December 31, 1995 and $113,556 and $158,506 for the six months
ended June 30, 1995 (unaudited) and 1996 (unaudited), respectively.

NOTE 10--CONTINGENCY:

   The Company is a defendant in a legal proceeding with the lessor of its
office and warehouse facilities relating to alleged damages suffered in
connection with the cancellation of a proposed sale of the property to a
third party. The claim does not specify an amount of damages and the Company
has responded to the complaint and made a counter claim. It is management's
opinion that the outcome of this litigation will not have a material effect
on the Company's financial position or results of operations.


                                     F-35
<PAGE>


                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS 

To the Board of Directors of
 Iron Mountain Incorporated: 

We have audited the accompanying balance sheet of Mohawk Business Record
Storage, Inc. (a Minnesota corporation) as of December 31, 1995, and the related
statements of operations and retained earnings and cash flows for the year then
ended. These financial statements are the responsibility of the Company's
management. Our responsibility is to express an opinion on these financial
statements based on our audit. 


We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion. 


In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Mohawk Business Record Storage,
Inc. as of December 31, 1995, and the results of its operations and its cash
flows for the year then ended in conformity with generally accepted accounting
principles. 


                                      /s/ ARTHUR ANDERSEN LLP 

Minneapolis, Minnesota
September 6, 1996


                                        

                                      F-36

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 

                                 BALANCE SHEETS

                                    ASSETS 

<TABLE>
<CAPTION>
                                                                        December 31,      September 30, 
                                                                            1995              1996      
                                                                        ---------------   --------------
                                                                                          (Unaudited)   
<S>                                                                        <C>               <C>            
Current Assets:                                                                                         
 Cash and cash equivalents ..........................................      $ 223,478         $  95,947  
 Accounts receivable (less allowance for doubtful accounts of $5,000                                    
 and $13,500 in 1995 and 1996, respectively) ........................      1,186,858         1,163,478  
 Notes receivable, stockholder   ....................................        100,000                --  
 Inventories   ......................................................         31,548            26,586  
 Prepaid expenses and other   .......................................         51,110            65,590  
 Current portion of note receivable, related company  ...............         15,996            12,996  
                                                                           ----------        ---------- 
    Total current assets   ..........................................      1,608,990         1,364,597  
                                                                           ----------        ---------- 
Property and Equipment  .............................................      9,049,148         9,318,493  
 Less -- Accumulated depreciation   .................................      5,013,510         5,536,537  
                                                                           ----------        ---------- 
    Net property and equipment   ....................................      4,035,638         3,781,956  
                                                                           ----------        ---------- 
Other Assets:                                                                                           
 Other   ............................................................         15,000            15,000  
 Long-term note receivable, related company  ........................        222,004           216,004  
                                                                           ----------        ---------- 
                                                                             237,004           231,004  
                                                                           ----------        ---------- 
                                                                           $5,881,632        $5,377,557 
                                                                           ==========        ========== 
                                   LIABILITIES AND STOCKHOLDERS' EQUITY                                 
Current Liabilities:                                                                                    
 Accounts payable ...................................................      $  47,887         $  38,990  
 Notes payable--                                                                                        
   Bank  ............................................................      1,625,000           900,000  
   Related parties   ................................................        333,200         1,899,100  
 Accrued expenses ...................................................        507,450           407,925  
 Deferred revenue ...................................................        551,947           441,815  
                                                                           ----------        ---------- 
    Total current liabilities .......................................      3,065,484         3,687,830  
                                                                           ----------        ---------- 
Long-term Notes Payable, stockholders  ..............................      1,400,000                --  
Commitments and Contingencies (Note 4)                                                                  
Stockholders' Equity:                                                                                   
 Common stock, 25,000 shares, $1 par, 4,000 shares issued and                                           
 outstanding   ......................................................          4,000             4,000  
 Paid-in capital  ...................................................         46,000            46,000  
 Retained earnings   ................................................      1,366,148         1,639,727  
                                                                           ----------        ---------- 
    Total stockholders' equity   ....................................      1,416,148         1,689,727  
                                                                           ----------        ---------- 
                                                                           $5,881,632        $5,377,557 
                                                                           ==========        ========== 
</TABLE>


      

   The accompanying notes are an integral part of these financial statements.

                                      F-37

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 

                STATEMENTS OF OPERATIONS AND RETAINED EARNINGS 

<TABLE>
<CAPTION>
                                                   Year Ended       Nine Months Ended September 30, 
                                                  December 31,      ------------------------------- 
                                                      1995             1995           1996          
                                                  ---------------   -------------   ------------    
                                                                            (Unaudited)             
<S>                                                 <C>              <C>            <C>             
Revenues:                                                                                           
 Storage   ....................................     $4,705,253       $3,476,550     $3,985,686      
 Service and storage material sales   .........      4,094,977        3,047,750      3,092,347      
                                                    -----------      -----------    -----------     
    Total revenues  ...........................      8,800,230        6,524,300      7,078,033      
                                                    -----------      -----------    -----------     
Operating Expenses:                                                                                 
 Cost of sales (excluding depreciation)  ......      4,644,836        3,527,125      3,550,591      
 Selling, general and administrative  .........      2,833,687        2,146,345      2,381,855      
 Depreciation and amortization  ...............        657,586          456,178        546,756      
                                                    -----------      -----------    -----------     
    Total operating expenses ..................      8,136,109        6,129,648      6,479,202      
                                                    -----------      -----------    -----------     
Operating Income ..............................        664,121          394,652        598,831      
Interest Expense ..............................        297,868          218,956        195,590      
Interest Income  ..............................         28,382           25,163         14,834      
                                                    -----------      -----------    -----------     
Net Income ....................................        394,635          200,859        418,075      
Retained Earnings, beginning of period   ......      1,262,433        1,262,433      1,366,148      
Dividend Distributions ........................        290,920          290,920        144,496      
                                                    -----------      -----------    -----------     
Retained Earnings, end of period   ............     $1,366,148       $1,172,372     $1,639,727      
                                                    ===========      ===========    ===========     
</TABLE>


      

   The accompanying notes are an integral part of these financial statements.

                                      F-38

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 

                           STATEMENTS OF CASH FLOWS 

<TABLE>
<CAPTION>
                                                   Year Ended    Nine Months Ended September 30,
                                                  December 31,  --------------------------------
                                                      1995            1995          1996     
                                                 --------------- --------------- ---------------
                                                                         (Unaudited)         
<S>                                                <C>             <C>             <C>         
Operating Activities:                                                                        
 Net income ....................................   $   394,635     $   200,859     $ 418,075 
 Adjustments to reconcile net income to                                                      
  net cash provided by operating activities--                                                
   Depreciation and amortization    ............       657,586         456,178       546,756 
   Gain (Loss) on sale of assets    ............        (6,662)         10,838        (4,710)
 Changes in assets and liabilities:                                                          
   Accounts receivable  ........................       (38,848)        149,604        23,380 
   Inventories .................................        (2,299)         (7,936)        4,962 
   Prepaid expenses and other ..................       (29,817)        (46,324)      (14,480)
   Deferred revenue  ...........................        69,238         (82,484)     (110,132)
   Accounts payable and accrued expenses  ......       233,202         242,069      (108,422)
                                                   -----------     -----------     --------- 
    Net cash provided by operating activities        1,277,035         922,804       755,429 
                                                   -----------     -----------     --------- 
Investing Activities:                                                                        
 Purchases of property and equipment   .........    (1,869,325)     (1,745,084)     (288,364)
 Notes receivable ..............................        12,000             250       109,000 
 Proceeds from sale of assets ..................        31,143          29,000            -- 
 Other   .......................................       (15,000)        (15,000)           -- 
                                                   -----------     -----------     --------- 
    Net cash used for investing activities   ...    (1,841,182)     (1,730,834)     (179,364)
                                                   -----------     -----------     --------- 
Financing Activities:                                                                        
 Proceeds from notes payable  ..................     1,659,482       1,558,200       343,880 
 Principal payments on notes payable   .........      (744,582)       (316,100)     (902,980)
 Dividend distributions ........................      (290,920)       (290,920)     (144,496)
                                                   -----------     -----------     --------- 
    Net cash provided by (used for) financing                                                
    activities .................................       623,980         951,180      (703,596)
                                                   -----------     -----------     --------- 
Net Increase (Decrease) in Cash  ...............        59,833         143,150      (127,531)
Cash and Cash Equivalents, beginning of period         163,645         163,645       223,478 
                                                   -----------     -----------     --------- 
Cash and Cash Equivalents, end of period  ......   $   223,478     $   306,795     $  95,947 
                                                   ===========     ===========     ========= 
Supplemental Disclosure:                                                                     
 Interest paid .................................   $   301,018     $   224,614     $ 181,435 
                                                   ===========     ===========     ========= 
</TABLE>

   The accompanying notes are an integral part of these financial statements.

                                      F-39

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1995


1. Organization of Business and Significant Accounting Policies 

     Mohawk Business Record Storage, Inc. (the Company), a Minnesota
corporation, is a full-service records management company providing storage and
related services for all media. The Company serves numerous legal, banking,
healthcare, accounting, insurance, entertainment and retail organizations in the
Minneapolis and Saint Paul, Minnesota metropolitan areas. 

Property and Equipment 

     Depreciation and amortization of property and equipment are recorded using
the straight-line and accelerated methods. Property and equipment consist of the
following: 

<TABLE>
<CAPTION>
                                                                      December 31,
                                                   Useful Lives          1995     
                                                  -----------------   ------------
<S>                                               <C>                  <C>       
Warehouse and disintegration equipment  ......    7 to 10 years        $5,585,597
Leasehold improvements   .....................    10 to 39 years        1,441,291
Transportation equipment .....................    5 to 10 years           723,603
Office equipment   ...........................    5 to 10 years         1,298,657
                                                                       ----------
                                                                       $9,049,148
                                                                       ==========
</TABLE>


     Minor maintenance costs are expensed as incurred. Major improvements to the
leased buildings are capitalized as leasehold improvements and depreciated as
described above. 

Revenue Recognition 

     Storage and service revenues are recognized in the month the respective
service is provided. Storage material sales are recognized when shipped to the
customer. Amounts related to future storage for customers where storage fees are
billed in advance are accounted for as deferred revenue and amortized over the
applicable period. These amounts are included in deferred revenue in the
accompanying balance sheet. The Company has one customer which accounted for 13%
of revenues for the year ended December 31, 1995. 

Cash and Cash Equivalents 

     The Company considers all highly liquid debt instruments purchased with a
maturity of three months or less to be cash equivalents. 

Inventories 

     Inventories are carried at the lower of cost (first-in, first-out basis) or
market and are comprised primarily of cartons. 

Accrued Expenses 

     Accrued expenses consisted of the following: 

                                           December 31,  
                                               1995      
                                          --------------
 Accrued incentive compensation  ......      $307,621   
 Accrued profit sharing ...............       160,000   
 Other   ..............................        39,829   
                                             ---------  
   Accrued expenses  ..................      $507,450   
                                             =========  



                                      F-40

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


Income Taxes 

     The Company has elected to be taxed as an S corporation under the
applicable Internal Revenue Code sections. The net income of the Company is
included in the individual income tax returns of the stockholders. Accordingly,
there is no provision for federal income taxes in the accompanying financial
statements. 

Financial Instruments 

     Unless otherwise noted, financial instruments are stated at cost, which
approximates fair value. 

Use of Estimates 

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. These estimates relate primarily to the realizability of
accounts receivable and the adequacy of certain accrued expenses. Actual results
could differ from those estimates. 

Concentrations of Credit Risk 

     Credit risk with respect to accounts receivable is generally spread across
a large number of customers with dispersion across different businesses. As of
December 31, 1995, one customer accounted for 17% of outstanding accounts
receivable. 

Unaudited Financial Information 

     The financial information as of September 30, 1996 and for the nine-month
periods ended September 30, 1995 and 1996 is unaudited and has been prepared
pursuant to the rules and regulations of the Securities and Exchange Commission.
In the opinion of management, such information reflects all normal recurring
adjustments necessary for a fair presentation. Operating results for the nine
months ended September 30, 1996 are not necessarily indicative of the results
that may be expected for the year ending December 31, 1996. 

2. Debt 

Notes Payable 

Notes payable consisted of the following: 

<TABLE>
<CAPTION>
                                                                                             December 31, 
                                                                                                 1995     
                                                                                             -------------
<S>                                                                                            <C>           
Unsecured notes payable to stockholders, principal due February 1997, interest payable                    
 monthly at the prime rate (8.5% at December 31, 1995)   .................................     $1,400,000 
Unsecured notes payable to related parties, due on demand, interest payable monthly at the                
 prime rate (8.5% at December 31, 1995)   ................................................        333,200 
                                                                                               ---------- 
  Total notes payable   ..................................................................      1,733,200 
Less -- Current maturities ...............................................................       (333,200)
                                                                                               ---------- 
Notes payable, net of current maturities  ................................................     $1,400,000 
                                                                                               ========== 
</TABLE>

                                      F-41

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


Line of Credit 

     The Company has a $2,000,000 revolving credit agreement with a bank which
is payable on demand. Borrowings bear interest at the prime rate and are
collateralized by property and equipment, certain intangible assets and the
personal guarantees of the Company's stockholders. 


     The line-of-credit agreement contains various covenants which require the
Company to maintain certain specified financial ratios. The Company was in
compliance with these covenants as of December 31, 1995. 


     Additional information relating to the line of credit is as follows: 

                                                                 1995    
                                                              -----------
     Borrowings outstanding at year-end  ..................   $1,625,000 
     Available borrowings at year-end .....................      375,000 
     Average borrowings outstanding during the year  ......    1,436,000 
     Range of interest rates during the year   ............     8.5%-9.0%

3. Notes Receivable 

Stockholder 

     The Company loaned $452,300 to one of its stockholders on May 12, 1992.
Interest is being paid monthly to the Company at the prime rate. Principal is
payable upon demand. The balance due to the Company under this agreement as of
December 31, 1995 was $100,000 and was repaid during the six-month period ended
June 30, 1996. 

Related Company 

     The Company loaned $400,000 to a related partnership certain of whose
partners are also stockholders of the Company. The proceeds of this loan were
used to purchase a building that the Company is renting from this partnership
(see Note 4). Interest is payable monthly by the partnership at the prime rate.
Monthly principal payments are $1,333. Principal outstanding at December 31,
1995 was $238,000. 

4. Commitments and Contingencies 

Operating Leases -- Related Parties 

     The Company has lease agreements for warehouse and office space with a
partnership whose partners are also stockholders of the Company. The leases are
operating leases with varying terms expiring between May 1998 and November 2009.
The Company pays all maintenance, insurance and utilities. Rent expense under
these leases was $509,000 for 1995. 


     The Company has another lease agreement for additional warehouse space with
a partnership, certain of whose partners are also stockholders of the Company.
The lease is an operating lease with a term of 10 years through July 2000. The
Company pays all taxes, maintenance, insurance and utilities. Rent expense under
this lease was $472,000 for 1995. 

                                      F-42

<PAGE>


                     MOHAWK BUSINESS RECORD STORAGE, INC. 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


     Future minimum lease payments on these operating leases for each of the
next five years and thereafter are as follows: 

 1996  .....................   $  980,000
 1997  .....................      980,000
 1998  .....................      857,000
 1999  .....................      769,000
 2000 and thereafter  ......    3,226,000
                                ---------
                               $6,812,000
                                =========

Purchase Order Commitment 

     In June 1996, the Company committed to purchase approximately $450,000 in
additional warehouse storage racking. 

5. Employee Benefits 

Profit-Sharing Plan 

     The Company has a profit-sharing plan covering substantially all of its
full-time employees. Contributions are determined annually by the board of
directors. Benefits are provided upon retirement, disability or death on the
basis of funds added to the trust accounts and earnings during periods of
participation. The total contribution to this plan was $160,000 for the year
ended December 31, 1995. 

Employee Benefit Plan 

     The Company has adopted a salary deduction benefit plan which provides
child care, medical and dental premiums, and other unreimbursed medical
expenses. All regular employees who complete more than 25 hours per week of
service are eligible to participate on a voluntary basis. The Company does not
match employee contributions. 

Bonus Plans 

     The Company has agreed to pay bonuses to each of two of its stockholders
equal to 20% of the net profits of the Company, as defined. Two other
stockholders and a member of senior management each are entitled to receive
bonuses equal to 5% of the net profits of the Company. In addition, the vice
president of one of the Company's divisions receives a bonus equal to 10% of
that division's net profits, as defined. Bonus expense for the year ended
December 31, 1995 was $703,000. 

6. Sale of Operating Assets 

     On September 6, 1996, the Company entered into an agreement to sell
substantially all of its operating assets to Iron Mountain Records Management,
Inc. 

                                      F-43

<PAGE>


                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS 

To the Stockholders and Board of Directors of 
 Safesite Records Management Corporation: 


We have audited the accompanying balance sheets of Safesite Records Management
Corporation (a Delaware corporation) as of December 31, 1995 and 1996, and the
related statements of operations, stockholders' equity (deficit) and cash flows
for each of the three years in the period ended December 31, 1996. These
financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits. 


We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion. 


In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Safesite Records Management
Corporation as of December 31, 1995 and 1996, and the results of its operations
and its cash flows for each of the three years in the period ended December 31,
1996, in conformity with generally accepted accounting principles. 


                                      /s/ ARTHUR ANDERSEN LLP 

Boston, Massachusetts 
March 14, 1997 





                                      F-44

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                                BALANCE SHEETS 
                          DECEMBER 31, 1995 AND 1996 

<TABLE>
<CAPTION>
                                                                       1995              1996      
                                                                 ---------------   --------------
<S>                                                                <C>               <C>            
                                              ASSETS                                             
 Current Assets:                                                                                 
   Cash ......................................................     $   297,076       $   221,207 
   Accounts receivable (less reserve for doubtful accounts of                                    
     $95,000 in 1995 and $95,200 in 1996)  ...................       1,922,241         2,414,417 
   Inventories   .............................................          56,860            60,521 
   Prepaid expenses and other   ..............................         138,920           132,255 
                                                                   -----------       ----------- 
     Total current assets ....................................       2,415,097         2,828,400 
                                                                   -----------       ----------- 
 Property and Equipment:  ....................................                                   
   Property and equipment ....................................       5,975,726         7,942,630 
   Less--Accumulated depreciation and amortization   .........      (3,223,333)       (3,971,394)
                                                                   -----------       ----------- 
     Net property and equipment ..............................       2,752,393         3,971,236 
                                                                   -----------       ----------- 
 Deposits and Other ..........................................         299,176           264,784 
                                                                   -----------       ----------- 
     Total assets   ..........................................     $ 5,466,666       $ 7,064,420 
                                                                   ===========       =========== 
                               LIABILITIES AND STOCKHOLDERS' EQUITY                              
 Current Liabilities:  .......................................                                   
   Revolving line of credit  .................................     $   200,000       $   225,000 
   Accounts payable ..........................................         743,309           856,571 
   Accrued payroll and related taxes  ........................         237,391           393,289 
   Other accrued expenses ....................................         310,263           558,853 
                                                                   -----------       ----------- 
     Total current liabilities  ..............................       1,490,963         2,033,713 
                                                                   -----------       ----------- 
 Deferred Rent   .............................................         409,806           463,328 
                                                                   -----------       ----------- 
 Commitments and Contingencies (Note 5)
 Stockholders' Equity:
   Preferred stock, $.01 par value-                                                              
   Authorized--5,000,000 shares                                                                  
   Issued and outstanding--none .............................              --                -- 
 Common stock, $.01 par value-                                                                   
   Authorized--15,000,000 shares                                                                 
   Issued and outstanding--9,107,347 shares in 1995 and                                          
    9,107,847 shares in 1996 .................................          91,073            91,078 
   Additional paid-in capital   ..............................      12,940,041        12,941,236 
   Accumulated deficit .......................................      (9,465,217)       (8,464,935)
                                                                   -----------       ----------- 
     Total stockholders' equity ..............................       3,565,897         4,567,379 
                                                                   -----------       ----------- 
     Total liabilities and stockholders' equity   ............     $ 5,466,666       $ 7,064,420 
                                                                   ===========       =========== 
</TABLE>

 

   The accompanying notes are an integral part of these financial statements.


                                      F-45

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                           STATEMENTS OF OPERATIONS 
             FOR THE YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996 

<TABLE>
<CAPTION>
                                                               1994            1995           1996       
                                                           -------------   -------------   ------------ 
<S>                                                         <C>             <C>             <C>           
 Revenues:                                                                                              
   Storage .............................................    $5,885,609      $7,059,068      $8,300,236  
   Service and storage material sales ..................     7,349,753       8,955,461      10,708,748  
                                                            -----------     -----------     ----------- 
     Total revenues ....................................    13,235,362      16,014,529      19,008,984  
 Operating Expenses:   .................................                                                
   Cost of sales (excluding depreciation and                                                            
     amortization) .....................................     6,664,958       8,054,043       9,463,585  
   Selling, general and administrative   ...............     4,974,358       6,444,171       7,586,602  
   Depreciation and amortization   .....................       622,470         657,514         799,549  
                                                            -----------     -----------     ----------- 
     Total operating expenses   ........................    12,261,786      15,155,728      17,849,736  
                                                            -----------     -----------     ----------- 
     Operating income  .................................       973,576         858,801       1,159,248  
 Interest Expense, net .................................       310,569         209,101          33,966  
                                                            -----------     -----------     ----------- 
     Income before provision for income taxes  .........       663,007         649,700       1,125,282  
 Provision for Income Taxes  ...........................        49,011          64,000         125,000  
                                                            -----------     -----------     ----------- 
     Net income  .......................................    $  613,996      $  585,700      $1,000,282  
                                                            ===========     ===========     =========== 
 Earnings per Common and Common Equivalent Share  ......    $     0.08      $     0.07      $     0.11  
                                                            ===========     ===========     =========== 
 Weighted Average Common and Common Stock                                                               
 Equivalent Shares Outstanding  ........................     7,382,487       8,291,969       9,170,648  
                                                            ===========     ===========     =========== 
</TABLE>

 

   The accompanying notes are an integral part of these financial statements.


                                      F-46

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                 STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) 
             FOR THE YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996 

<TABLE>
<CAPTION>
                                                                                                                 Total            
                                                   Common Stock           Additional                          Stockholders'       
                                             Number          $.01           Paid-in         Accumulated          Equity           
                                            of Shares      Par Value        Capital           Deficit           (Deficit)          
                                            ------------   ------------   --------------   ----------------   ---------------     
<S>                                           <C>            <C>            <C>              <C>                <C>               
Balance, December 31, 1993   ............     7,332,347      $73,323        $9,426,580       $ (10,664,913)     $ (1,165,010)     
 Net income   ...........................            --           --                --             613,996           613,996      
                                             -----------     --------       -----------      -------------      ------------      
Balance, December 31, 1994   ............     7,332,347       73,323         9,426,580         (10,050,917)         (551,014)     
 Net income   ...........................            --           --                --             585,700           585,700      
Issuance of common stock (Note 6)  ......     1,775,000       17,750         3,513,461                  --         3,531,211      
                                             -----------     --------       -----------      -------------      ------------      
Balance, December 31, 1995   ............     9,107,347       91,073        12,940,041          (9,465,217)        3,565,897      
 Net income   ...........................            --           --                --           1,000,282         1,000,282      
 Exercise of stock options   ............           500            5             1,195                  --             1,200      
                                             -----------     --------       -----------      -------------      ------------      
Balance, December 31, 1996   ............     9,107,847      $91,078        $12,941,236      $  (8,464,935)     $  4,567,379      
                                             ===========     ========       ===========      =============      ============      
</TABLE>

 

   The accompanying notes are an integral part of these financial statements.


                                      F-47

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                           STATEMENTS OF CASH FLOWS 
             FOR THE YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996 

<TABLE>
<CAPTION>
                                                               1994             1995             1996     
                                                             ------------   ---------------   ------------
<S>                                                           <C>             <C>             <C>          
 Cash Flows from Operating Activities:                                                                    
   Net income   ..........................................    $ 613,996       $   585,700     $ 1,000,282 
   Adjustments to reconcile net income to net cash                                                        
   provided by operating activities--                                                                     
     Depreciation and amortization   .....................      622,470           657,514         799,549 
     Loss (gain) on disposition of fixed assets  .........       (1,909)            3,105          (9,929)
     Changes in deferred rent  ...........................       41,351            50,218          53,522 
     Changes in assets and liabilities--   ...............                                                
      Accounts receivable   ..............................     (427,082)          (50,794)       (492,176)
      Inventories  .......................................      (27,177)            9,024          (3,661)
      Prepaid expenses and other  ........................      (77,114)           27,528           6,665 
      Accounts payable   .................................      205,462           131,898         113,262 
      Accrued expenses   .................................       51,665           (34,118)        404,488 
                                                              ---------       -----------     ----------- 
       Net cash provided by operating activities .........    1,001,662         1,380,075       1,872,002 
                                                              ---------       -----------     ----------- 
 Cash Flows from Investing Activities:  ..................                                                
   Purchase of fixed assets ..............................     (733,100)       (1,718,005)     (1,984,226)
   Proceeds from the sale of fixed assets  ...............        8,000             1,000          18,829 
   Increase in other assets ..............................      (30,394)          (92,068)         (8,674)
                                                              ---------       -----------     ----------- 
       Net cash used in investing activities  ............     (755,494)       (1,809,073)     (1,974,071)
                                                              ---------       -----------     ----------- 
 Cash Flows from Financing Activities:                                                                    
   Net proceeds from revolving line of credit ............           --           200,000          25,000 
   Net proceeds from issuance of common stock ............           --         1,024,429              -- 
   Proceeds from the exercise of stock options   .........           --                --           1,200 
   Repayment of notes payable to stockholders ............           --        (1,043,218)             -- 
                                                              ---------       -----------     ----------- 
       Net cash provided by financing activities .........           --           181,211          26,200 
                                                              ---------       -----------     ----------- 
 Net Increase (Decrease) in Cash  ........................      246,168          (247,787)        (75,869)
 Cash, beginning of year .................................      298,695           544,863         297,076 
                                                              ---------       -----------     ----------- 
 Cash, end of year .......................................    $ 544,863       $   297,076     $   221,207 
                                                              =========       ===========     =========== 
 Supplemental Disclosure of Cash Flow Information:                                                        
   Interest paid during the year  ........................    $ 336,500       $   242,532     $    28,700 
                                                              =========       ===========     =========== 
   Income taxes paid during the year .....................    $  21,011       $    64,700     $    89,630 
                                                              =========       ===========     =========== 
 Supplemental Disclosure of Noncash Financing Activities:                                                 
   Conversion of notes payable to stockholders into                                                       
   common stock    .......................................    $      --       $ 2,506,782     $        -- 
                                                              =========       ===========     =========== 
</TABLE>

 

   The accompanying notes are an integral part of these financial statements.


                                      F-48

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                         NOTES TO FINANCIAL STATEMENTS 
                               DECEMBER 31, 1996


1. Operations 

     Safesite Records Management Corporation (the Company) provides off-site
records management services for storing and retrieving paper, records and data
processing media. 

2. Summary of Significant Accounting Policies 

     The accompanying financial statements reflect the application of certain
accounting policies as described in this note and elsewhere in the accompanying
financial statements and notes. 


     a. Use of Estimates in the Preparation of Financial Statements 

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates. 


     b. Revenue Recognition 

     Revenue is recognized under storage and service agreements as the related
services are performed. 

     c. Inventories 

     Inventories are carried at the lower of cost using the first-in, first-out
basis or market and are comprised primarily of cartons. 


     d. Depreciation and Amortization 

     The Company provides for depreciation using the straight-line method by
charges to operations in amounts that allocate the cost of the assets over their
estimated useful lives as follows:
      

                                                      Estimated                
              Asset Classification                   Useful Life               
- -------------------------------------------------  ---------------             
 Warehouse fixtures and equipment ...............   7 Years                    
 Office furniture, fixtures and equipment  ......   5-7 Years                  
 Automobiles ....................................   2-3 Years                  
 Leasehold improvements  ........................   Life of Lease              
 Equipment under capital leases   ...............   Life of Lease              


     Property and equipment consist of the following: 

                                                            December 31,       
                                                    ---------------------------
                                                        1995           1996    
                                                      --------      ---------
 Warehouse fixtures and equipment ...............    $4,422,840     $5,890,185 
 Office furniture, fixtures and equipment  ......       734,929        921,410 
 Automobiles ....................................        83,123         88,509 
 Leasehold improvements  ........................       696,985      1,004,677 
 Equipment under capital leases   ...............        37,849         37,849 
                                                     -----------    -----------
                                                     $5,975,726     $7,942,630 
                                                     ===========    ===========

 

                                      F-49

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


     e. Income Taxes 

     The Company accounts for income taxes under the liability method of
accounting for income taxes. Under this method, the Company recognizes a current
tax liability or asset for current taxes payable or refundable and a deferred
tax liability or asset for the estimated future tax effects of temporary
differences between the tax and financial reporting bases of assets and
liabilities and tax loss carryforwards to the extent they are realizable. 

     Deferred tax assets and liabilities are reflected at currently enacted
income tax rates applicable to the period in which the deferred tax assets or
liabilities are expected to be realized or settled. As changes in tax laws or
rates are enacted, assets and liabilities are adjusted through the provision for
income taxes. 

     f. Deferred Rent 

     The Company has entered into various leases for buildings used in the
storage of records. Certain leases have fixed escalation clauses or other
features that require normalization of the rental expense over the life of the
lease resulting in deferred rent being reflected in the accompanying balance
sheets. 

     g. Disclosure About Fair Value of Financial Instruments 

     Effective December 31, 1995, the Company adopted Statement of Financial
Accounting Standards (SFAS) No. 107, Disclosures About Fair Value of Financial
Instruments, which requires that the Company disclose estimated fair values for
certain of its financial instruments. Financial instruments include such items
as cash, lines of credit and other instruments as defined in the standard. The
carrying amounts of these financial instruments approximate their estimated fair
values. 

     h. Earnings Per Common and Common Equivalent Share 

     Earnings per common and common equivalent share is computed based on the
weighted average number of common and common stock equivalent shares outstanding
during each period. Common stock equivalents consist of employee and nonemployee
directors options to purchase common stock. 

     On March 3, 1997, the Financial Accounting Standards Board issued SFAS No.
128, Earnings per Share. The new standard must be applied beginning in 1998 and
at that time will require restatement of previously reported earnings per share.
The new statement cannot be applied early. The Company believes that the effect
of applying the new standard will not be material. 

3. Revolving Line of Credit 

     In December 1996, the Company amended its revolving line of credit
agreement (the Agreement) with Fleet Bank of Massachusetts, N.A. by increasing
the line from $1 million to $2 million. Loans under the Agreement are limited to
the lesser of $2 million or the borrowing base (approximately $1,750,000 at
December 31, 1996), as defined in the agreement, are due on June 30, 1998 and
bear interest at prime plus 0.5% per annum (8.75% at December 31, 1996). Under
the terms of the Agreement, the Company is required to pay an unused line fee
equal to one-quarter of one percent per annum on the unused portion of the line,
as defined in the Agreement. In addition, the Company is required to, among
other things, comply with certain financial covenants, as defined in the
Agreement. At December 31, 1996, the Company was in compliance with the various
covenants of the Agreement. Loans under the revolving line of credit are secured
by all assets and property of the Company. 

4. Income Taxes 

     At December 31, 1996, the Company had approximately $781,000 of federal net
operating loss carryforwards that expire in the years 2007 and 2008. These net
operating loss carryforwards are available to reduce future taxable income and
are subject to review and possible adjustment by the Internal Revenue Service.
In addition, the Internal Revenue Code contains provisions that may limit the
net operating loss carryforwards available in any given year in the event of
significant changes in ownership interest. 

                                      F-50

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


     The provision for income taxes consists of the following components: 

                       1994         1995          1996     
                     -----------   ----------   -----------
 Federal-                                                  
  Current   ......     $ 11,500      $ 7,400      $ 79,300 
  Deferred  ......      (11,500)      (7,400)      (43,156)
 State  ..........       49,011       64,000        88,856 
                       --------      -------      -------- 
                       $ 49,011      $64,000      $125,000 
                       ========      =======      ======== 


     The Company has recorded a 100% valuation allowance against the deferred
tax asset related to the net operating loss carryforwards, as the realization of
the asset is uncertain. The components of the deferred tax asset at December 31,
1995 and 1996 are as follows: 

                                                          1995          1996    
                                                       ------------ ------------
Tax effect of net operating loss carryforwards  ......   $ 560,176    $ 265,573 
                                                         ---------    --------- 
Tax effect of temporary differences-                                            
  Deferred rent   ....................................     137,484      157,532 
  Accrued medical ....................................      16,064       57,126 
  Reserve for bad debts ..............................      32,300       32,368 
  Deferred start-up costs  ...........................          --        8,786 
  Depreciation .......................................      13,825     (135,598)
                                                         ---------    --------- 
                                                           199,673      120,214 
                                                         ---------    --------- 
                                                           759,849      385,787 
Valuation allowance  .................................    (759,849)    (385,787)
                                                         ---------    --------- 
    Deferred tax asset  ..............................   $      --    $      -- 
                                                         =========    ========= 


     A reconciliation of total income tax expense and the amount computed by
applying the U.S. Federal income tax rate of 34% to income before income taxes
is as follows: 

<TABLE>
<CAPTION>
                                                                1994           1995            1996     
                                                              ------------   ------------   ------------
<S>                                                             <C>            <C>            <C>          
 Computed "expected" tax provision    .....................     $ 225,422      $ 220,898      $ 382,596 
 Increase (decrease) in income taxes resulting from--                                                   
  Utilization of net operating loss carryforwards    ......      (216,049)      (210,945)      (336,094)
  Disallowance for meals and entertainment expense   ......         7,291         11,807         17,101 
  Other    ................................................            --             --          2,752 
  Effect of certain state income taxes   ..................        32,347         42,240         58,645 
                                                                ---------      ---------      --------- 
                                                                $  49,011      $  64,000      $ 125,000 
                                                                =========      =========      ========= 
</TABLE>

5. Commitments and Contingencies 

     a. Lease Commitments 

     The Company rents certain equipment, offices and warehouse space under
operating leases. Future minimum payments under these leases at December 31,
1996 are as follows: 

                                      F-51

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


                                                 Operating Leases     
                                          ----------------------------
                                                           Vehicle and
 Year                                       Real Estate      Equipment  
- -----
 1997 .................................     $3,120,000       $330,000 
 1998 .................................      3,215,000        274,000 
 1999 .................................      3,026,000        166,000 
 2000 .................................      3,050,000         35,000 
 2001 .................................      2,887,000         28,000 
 Thereafter ...........................      8,235,000          2,000 
                                            -----------      ---------
  Total minimum lease payments   ......     $23,533,000      $835,000 
                                            ===========      =========


     Certain of the above office and warehouse leases are with two stockholders.
Total rental expense charged to operations in 1994, 1995 and 1996 was
approximately $2,229,000, $2,475,000 and $2,815,000, respectively, of which
approximately $567,000, $597,000 and $633,000, respectively, was related to
operating leases with these stockholders. The Company believes that the rent
paid to the stockholders approximates fair value. 


     b. Legal Matters 

     The Company has been named as a defendant in certain lawsuits relating to
personnel matters. In the opinion of management, based on discussions with legal
counsel, the ultimate liability to the Company as a result of these matters will
not have a material impact on the results of operations or financial position of
the Company. 

6. Issuance of Common Stock 

     In July 1995, the Company sold 521,609 shares of common stock to existing
stockholders at a price of $2.00 per share in order to repay a portion of the
notes payable to certain stockholders. After issuance costs of $18,789, the net
proceeds from the offering were $1,024,429. The remaining $2,506,782 of the
notes payable to certain stockholders was converted directly into 1,253,391
shares of common stock. 

7. Preferred Stock 

     The Company has 5,000,000 shares of authorized, unissued and undesignated
$.01 par value preferred stock. The Board of Directors is authorized to issue
the shares for such consideration and on such terms as the directors may deem.
The powers, designation, preferences and other rights or restrictions of the
preferred shares will be determined by the Board of Directors. 

8. Stock Incentive Plan 

     The Company has established the Safesite Records Management Corporation
1990 Long-Term Incentive Plan (Incentive Plan) and the Safesite Records
Management Corporation 1990 Nonstatutory Stock Option Plan (collectively, the
Plans). Under the Plans, the Board of Directors may grant options to purchase up
to an aggregate of 900,049 shares of common stock to officers, other key
employees and nonemployee directors. The Plans allow the Company to grant both
incentive stock options (Incentive Plan only) and nonqualified stock options;
currently, all options granted under the Plans are nonqualified. The exercise
price of options granted will not be less than the fair market value of the
shares, as determined by the Board of Directors, on the date of grant. The
options vest over five years with accelerated vesting in the event of a change
in control or sale of the Company. Option activity under the Plans in 1994, 1995
and 1996 is as follows: 

                                      F-52

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


                                                            Weighted     
                                           Number of         Average     
                                            Options       Exercise Price 
                                           ------------   ---------------
 Outstanding, December 31, 1993   ......      175,750          $2.04     
  Granted    ...........................       65,500           2.40     
  Terminated ...........................       (2,000)          2.40     
                                             --------          ------    
 Outstanding, December 31, 1994   ......      239,250           2.14     
  Granted    ...........................       90,000           3.00     
  Terminated    ........................       (8,500)          2.57     
                                             --------          ------    
 Outstanding, December 31, 1995   ......      320,750           2.37     
  Granted    ...........................      150,500           3.29     
  Terminated    ........................       (3,500)          3.29     
  Exercised  ...........................         (500)          2.40     
                                             --------          ------    
 Outstanding, December 31, 1996   ......      467,250          $2.66     
                                             ========          ======    
 Exercisable, December 31, 1996   ......      187,450          $2.20     
                                             ========          ======    


     At December 31, 1996, the weighted average remaining contractual life of
outstanding options was approximately 6.6 years. Additionally, at December 31,
1996, the range of exercise prices for outstanding options was $1.60 to $3.29
and the range of exercise prices for shares currently exercisable was $1.60 to
$3.00. 

     Effective January 1, 1996, the Company adopted the provisions of SFAS No.
123, Accounting for Stock-Based Compensation. The Company has elected to
continue to account for stock options at intrinsic value with disclosure of fair
value accounting on net income and earnings per share on a pro forma basis. Had
the Company elected to recognize compensation cost based on the fair value of
the options granted at grant date as prescribed by SFAS No. 123, net income and
earnings per common and common equivalent share would have been reduced to the
pro forma amounts indicated in the table below: 

<TABLE>
<CAPTION>
                                                                       Years Ended December 31, 
                                                                      --------------------------
                                                                         1995          1996      
                                                                      -----------   ------------
<S>                                                                    <C>          <C>          
Net income applicable to common stockholders--as reported   ......     $585,700     $1,000,282  
Net income applicable to common stockholders--pro forma  .........      467,432        829,342  
Net income per common and common equivalent share--as                                          
 reported    ......................................................        0.07           0.11  
Net income per common and common equivalent share--pro                                         
 forma    .........................................................        0.06           0.09  
</TABLE>


     Consistent with SFAS No. 123, pro forma net income has not been calculated
for options granted prior to January 1, 1995. Accordingly, pro forma
compensation cost may not be representative of that to be expected in future
years. 

     The weighted average fair value of options granted in 1995 and 1996 was
$1.55 and $1.33 per share, respectively. The values were estimated on the date
of grant using the Black-Scholes option pricing model. The following table
summarizes the weighted average assumptions used for grants in the year ended
December 31: 

 Assumption                               1995        1996    
- -------------------------------------   ----------   ---------
 Expected volatility  ...............     N/A          N/A    
 Risk-free interest rate    .........    7.76%        5.38%   
 Expected dividend yield    .........     N/A          N/A    
 Expected life of the option   ......    9.2 yrs      9.5 yrs 

                                        

                                      F-53

<PAGE>


                    SAFESITE RECORDS MANAGEMENT CORPORATION 
                  NOTES TO FINANCIAL STATEMENTS -- (Continued)


9. Profit Sharing Plan and Trust 

     Effective January 1, 1995, the Company adopted the Safesite 401(k) Profit
Sharing Plan and Trust (the Plan), which covers substantially all employees.
Under the Plan, employees may contribute a portion of their earnings to the Plan
to be invested in various savings alternatives. The Company makes matching
contributions to the Plan at a rate of 20% of an employee's contribution, not to
exceed 2% of such employee's salary. The matching contributions vest ratably
over five years. The Company contributed $39,786 and $53,640 to the Plan for the
years ended December 31, 1995 and 1996, respectively. 

10. Subsequent Event 

     In February 1997, the Company signed a definitive agreement to merge with
Iron Mountain Incorporated (Iron Mountain), a publicly held company based in
Boston, Massachusetts. 

     The Company's stockholders and holders of exercisable options will receive
Iron Mountain common stock valued at approximately $50 million, plus
approximately $12 million in cash. The number of shares of Iron Mountain common
stock will be determined based on its market price, using a "collar" with a
floor of $26.00 and a ceiling of $31.00. The transaction is subject to
regulatory approval and the approval of the Company's stockholders. The merger
is expected to be completed during the second quarter of 1997. 




                                      F-54


<PAGE>



                                                                         ANNEX I

                                                                  CONFORMED COPY





                          AGREEMENT AND PLAN OF MERGER


                                  BY AND AMONG


                           IRON MOUNTAIN INCORPORATED,

                             IM-1 ACQUISITION CORP.

                                       AND

                     SAFESITE RECORDS MANAGEMENT CORPORATION

                                   DATED AS OF

                                FEBRUARY 19, 1997

                         AS AMENDED AS OF APRIL 1, 1997



<PAGE>





                                                 TABLE OF CONTENTS
<TABLE>

ARTICLE 1.

<S>      <C>      <C>               <C>                                                                           <C>
         THE MERGER...............................................................................................2
                  Section 1.1.      The Merger....................................................................2
                  Section 1.2.      Action by Stockholders........................................................2
                  Section 1.3.      Closing.......................................................................2
                  Section 1.4.      Effective Time................................................................2
                  Section 1.5.      Effect of the Merger..........................................................3
                  Section 1.6.      Certificate of Incorporation..................................................3
                  Section 1.7.      Bylaws........................................................................3
                  Section 1.8.      Directors and Officers........................................................3
                  Section 1.9.      Alternative Transaction.......................................................3

ARTICLE 2.

         CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES.......................................................3
                  Section 2.1.      Conversion of Securities......................................................3
                  Section 2.2.      Exchange of Certificates; Exchange Agent and
                                    Exchange Procedures...........................................................4
                  Section 2.3.      Stock Transfer Books..........................................................6
                  Section 2.4.      Option Securities.............................................................6
                  Section 2.5.      Dissenting Shares.............................................................7

ARTICLE 3.

         REPRESENTATIONS AND WARRANTIES OF THE COMPANY............................................................8
                  Section 3.1.      Organization and Business; Power and Authority;
                                    Effect of Transaction.........................................................8
                  Section 3.2.      Financial and Other Information...............................................9
                  Section 3.3.      Changes in Condition.........................................................10
                  Section 3.4.      Liabilities..................................................................10
                  Section 3.5.      Title to Properties; Leases..................................................10
                  Section 3.6.      Compliance with Private Authorizations.......................................11
                  Section 3.7.      Compliance with Governmental Authorizations and
                                    Applicable Law...............................................................12
                  Section 3.8.      Intangible Assets............................................................12
                  Section 3.9.      Related Transactions.........................................................13
                  Section 3.10.     Insurance....................................................................13
                  Section 3.11.     Tax Matters..................................................................13
                  Section 3.12.     ERISA........................................................................14
                  Section 3.13.     Authorized and Outstanding Capital Stock.....................................16
                  Section 3.14.     Employment Arrangements......................................................17
                  Section 3.15.     Material Agreements..........................................................18
                  Section 3.16.     Ordinary Course of Business..................................................18
                  Section 3.17.     Bank Accounts, Etc...........................................................20
                  Section 3.18.     Adverse Restrictions.........................................................20


<PAGE>


                                                        ii

                  Section 3.19.     Broker or Finder.............................................................20
                  Section 3.20.     Environmental Matters........................................................20
                  Section 3.21.     Operational Matters..........................................................22
                  Section 3.22.     Materiality..................................................................22

ARTICLE 4.

         REPRESENTATIONS AND WARRANTIES OF ACQUIROR
         AND ACQUIROR MERGER SUBSIDIARY..........................................................................22
                  Section 4.1.      Organization and Qualification; Power and Authority;
                                    Effect of Transaction........................................................22
                  Section 4.2.      Capitalization of Acquiror and Acquiror Merger Subsidiary....................23
                  Section 4.3.      SEC Filings; Financial Statements............................................24
                  Section 4.4.      Registration Statement.......................................................24
                  Section 4.5.      Brokers......................................................................25

ARTICLE 5.

         ADDITIONAL COVENANTS....................................................................................25
                  Section 5.1.      Access to Information; Confidentiality.......................................25
                  Section 5.2.      Agreement to Cooperate.......................................................26
                  Section 5.3.      Affiliate Agreements; Registration Rights Agreement..........................27
                  Section 5.4.      No Solicitation..............................................................28
                  Section 5.5.      Directors' and Officers' Indemnification and Insurance.......................29
                  Section 5.6.      Notification of Certain Matters..............................................29
                  Section 5.7.      Public Announcements.........................................................29
                  Section 5.8.      Obligations of Acquiror......................................................29
                  Section 5.9.      Employee Benefits; Severance Policy..........................................29
                  Section 5.10.     Certain Actions Concerning Business Combinations..................... .......30
                  Section 5.11.     Conversion of Option Securities..............................................30
                  Section 5.12.     Tax Treatment................................................................30
                  Section 5.13.     Preparation of the Registration Statement....................................30

ARTICLE 6.

         CLOSING CONDITIONS......................................................................................32
                  Section 6.1.      Conditions to Obligations of Each Party to Effect the
                                    Merger.......................................................................32
                  Section 6.2.      Conditions to Obligations of Acquiror and Acquiror
                                    Merger Subsidiary. ..........................................................33
                  Section 6.3.      Conditions to Obligations of the Company.....................................34

ARTICLE 7.

         TERMINATION, AMENDMENT AND WAIVER.......................................................................35
                  Section 7.1.      Termination..................................................................35
                  Section 7.2.      Effect of Termination........................................................36


<PAGE>


                                                        iii
                  Section 7.3.      Amendment....................................................................36
                  Section 7.4.      Waiver.......................................................................36
                  Section 7.5.      Fees, Expenses and Other Payments............................................37
                  Section 7.6.      Effect of Investigation......................................................37

ARTICLE 8.

         INDEMNIFICATION.........................................................................................38
                  Section 8.1.      Survival.....................................................................38
                  Section 8.2.      Escrow; Indemnification......................................................38
                  Section 8.3.      Limitation of Liability; Disposition of Escrow Indemnity
                                    Funds........................................................................39
                  Section 8.4.      Notice of Claims.............................................................39
                  Section 8.5.      Defense of Third Party Claims................................................40
                  Section 8.6.      Balance Sheet Adjustment.....................................................40
                  Section 8.7.      Exclusive Remedy.............................................................40

ARTICLE 9.

         GENERAL PROVISIONS......................................................................................40
                  Section 9.1.      Notices......................................................................40
                  Section 9.2.      Headings.....................................................................41
                  Section 9.3.      Severability.................................................................41
                  Section 9.4.      Entire Agreement.............................................................42
                  Section 9.5.      Assignment...................................................................42
                  Section 9.6.      Parties in Interest..........................................................42
                  Section 9.7.      Governing Law................................................................42
                  Section 9.8.      Enforcement of the Agreement.................................................42
                  Section 9.9.      Counterparts.................................................................43
                  Section 9.10.     Mutual Drafting..............................................................43
                  Section 9.11.     Continuation of Covenants....................................................43

ARTICLE 10.

         DEFINITIONS.............................................................................................43


</TABLE>


EXHIBITS

     5.3        Form of Affiliate Agreement
     6.2(c)     Form of Opinion of Woods, Oviatt, Gilman, Sturman & Clarke LLP
     6.3(a)     Form of Opinion of Sullivan & Worcester LLP
     8.3        Form of Escrow Agreement

SCHEDULES

         Disclosure Schedule
         Acquiror Disclosure Schedule


<PAGE>









                          AGREEMENT AND PLAN OF MERGER


         AGREEMENT AND PLAN OF MERGER, dated as of February 19, 1997, among Iron
Mountain Incorporated, a Delaware corporation ("Acquiror"), IM-1 Acquisition
Corp., a Delaware corporation and a wholly owned Subsidiary of Acquiror
("Acquiror Merger Subsidiary"), and Safesite Records Management Corporation, a
Delaware corporation (the "Company").

                              W I T N E S S E T H:

         WHEREAS, upon the terms and subject to the conditions of this Agreement
(this and other capitalized terms used herein are either defined in Section 10
below or in another Section of this Agreement and, in such case, Article 10
includes a reference to such Section), in accordance with the General
Corporation Law of the State of Delaware (the "DGCL"), the Company and Acquiror
Merger Subsidiary will carry out a business combination transaction pursuant to
which Acquiror Merger Subsidiary will merge with and into the Company (the
"Merger") and the stockholders of the Company (the "Stockholders") will convert
their holdings into a combination of cash and shares of the Voting Common Stock,
par value $.01 per share, of Acquiror ("Acquiror Stock");

         WHEREAS, the Board of Directors of the Company has unanimously
determined that the Merger is fair to, and in the best interests of, the Company
and the Stockholders and has approved and adopted this Agreement as a tax-free
plan of reorganization within the provisions of Section 368(a) of the Internal
Revenue Code of 1986, as amended (the "Code"), has approved this Agreement, the
Merger and the Transactions and has recommended approval and adoption of this
Agreement, the Merger and the Transactions by the Stockholders; and

         WHEREAS, the Board of Directors of Acquiror has unanimously approved
and adopted this Agreement, the Merger and the Transactions, and Acquiror has
approved and adopted this Agreement, the Merger and the Transactions as the sole
stockholder of Acquiror Merger Subsidiary;

         NOW, THEREFORE, in consideration of the foregoing and the respective
representations, warranties, covenants and agreements set forth in this
Agreement, the parties hereto, intending to be legally bound, agree as follows:


                                      I-1

<PAGE>


                                   ARTICLE 1.

                                   THE MERGER

         Section 1.1. The Merger. Upon the terms and subject to the conditions
set forth in this Agreement, and in accordance with the DGCL at the Effective
Time, Acquiror Merger Subsidiary shall be merged with and into the Company. As a
result of the Merger, the separate existence of Acquiror Merger Subsidiary shall
cease and the Company shall continue as the surviving corporation of the Merger
(the "Surviving Corporation").

         Section 1.2.      Action by Stockholders.

         (a) The Company, acting through its Board of Directors, shall, in
accordance with and subject to Applicable Law and its Organic Documents: as soon
as practicable, duly call, give notice of, convene and hold a special meeting of
the Stockholders for the purpose of adopting and approving this Agreement, the
Merger and the Transactions (the "Special Meeting"); include in any proxy
statement related to the Special Meeting the conclusion and recommendation of
the Board of Directors to the effect that the Board of Directors, having
determined that this Agreement, the Merger and the Transactions are in the best
interests of the Company and the Stockholders, has approved this Agreement, the
Merger and the Transactions and recommends that the Stockholders vote in favor
of the approval and adoption of this Agreement, the Merger and the Transactions;
and use its best efforts to obtain the necessary approval and adoption of this
Agreement, the Merger and the Transactions by the Stockholders.

         (b) Acquiror hereby represents that Acquiror, as sole stockholder of
Acquiror Merger Subsidiary, has approved and adopted this Agreement, the Merger
and the Transactions. Acquiror shall take all additional actions as sole
stockholder of Acquiror Merger Subsidiary necessary to adopt and approve and
effectuate the provisions of this Agreement, the Merger and the Transactions.

         Section 1.3. Closing. Unless this Agreement shall have been terminated
pursuant to Section 7.1 hereof and the Merger and the Transactions shall have
been abandoned, the closing of the Merger (the "Closing") will take place at
10:00 A.M., local time, on the fifth business day (the "Closing Date") after the
date on which the last of the conditions set forth in Article 6 is satisfied or
waived (other than conditions requiring deliveries at the Closing), at the
offices of Sullivan & Worcester LLP, One Post Office Square, Boston,
Massachusetts, unless another date, time or place is agreed to in writing by the
Company and Acquiror.

         Section 1.4. Effective Time. As promptly as practicable after the
satisfaction or, if permissible, waiver of the conditions set forth in Article 6
(but subject to Section 1.3 hereof), the Parties shall cause the Merger to be
consummated by filing a certificate of merger with the Secretary of State of the
State of Delaware, and by making any related filings required under the DGCL.
The Merger shall become effective at such time (but not prior to the Closing
Date) as such certificate is duly filed with the Secretary of State of the State
of Delaware, or at such later time as is specified in such certificate (the
"Effective Time").


                                      I-2
<PAGE>

         Section 1.5. Effect of the Merger. From and after the Effective Time,
the Surviving Corporation shall possess all the rights, privileges, powers and
franchises and be subject to all of the restrictions, disabilities and duties of
the Company and Acquiror Merger Subsidiary, and the Merger shall otherwise have
the effects, all as provided under the DGCL.

         Section 1.6. Certificate of Incorporation. From and after the Effective
Time, the Certificate of Incorporation of Acquiror Merger Subsidiary as in
effect immediately prior to the Effective Time shall be the Certificate of
Incorporation of the Surviving Corporation, until amended in accordance with
Applicable Law, and the name of the Surviving Corporation shall be such name as
Acquiror may elect.

         Section 1.7. Bylaws. From and after the Effective Time, the bylaws of
Acquiror Merger Subsidiary as in effect immediately prior to the Effective Time
shall be the bylaws of the Surviving Corporation, until amended in accordance
with Applicable Law.

         Section 1.8. Directors and Officers. From and after the Effective Time,
until successors are duly elected or appointed and qualified (or their earlier
resignation or removal) in accordance with Applicable Law the directors of
Acquiror Merger Subsidiary at the Effective Time shall be the directors of the
Surviving Corporation and the officers of Acquiror Merger Subsidiary at the
Effective Time shall be the officers of the Surviving Corporation. B. Thomas
Golisano shall be appointed or elected as a Director of Acquiror, to hold office
in accordance with the Restated Certificate of Incorporation and By-Laws of
Acquiror.

         Section 1.9. Alternative Transaction. Acquiror shall have the right, by
giving written notice thereof to the Company, to restructure the Merger such
that the Company merges with and into Acquiror Merger Subsidiary (such merger
being referred to as the "Alternative Transaction"). In the event that the
Merger is structured as the Alternative Transaction, the separate corporate
existence of the Company shall cease upon consummation of the Alternative
Transaction and each reference in this Agreement to the Surviving Corporation
and to the Merger shall be deemed to refer to Acquiror Merger Subsidiary, as in
existence following the Alternative Transaction, and the merger of the Company
with and into Acquiror Merger Subsidiary, respectively.


                                   ARTICLE 2.

               CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES

         Section 2.1.Conversion of Securities.  At the Effective Time, by virtue
of the Merger and without any action on the part of Acquiror Merger Subsidiary,
the Company or the holders of any of the following securities:

         (a) Each share of Common Stock, par value $.01 per share, of the
Company (the "Company Stock") issued and outstanding immediately prior to the
Effective Time (other than any shares of Company Stock to be cancelled pursuant
to Section 2.1(b) and any Dissenting Shares), shall be converted into the right
to receive, subject to the indemnification provisions of Article 8 hereof, (i)
that number equal to the Stock Conversion Number of fully paid and

                                      I-3
<PAGE>

nonassessable shares of Acquiror Stock (the "Stock Merger Consideration") and
(ii) cash in an amount equal to the Cash Conversion Number (the "Cash Merger
Consideration", and together with the Stock Merger Consideration, the "Merger
Consideration"). At the Effective Time, all shares of Company Stock (the
"Shares") shall no longer be outstanding and shall automatically be cancelled
and retired and shall cease to exist, and certificates previously evidencing any
such Shares (each, a "Certificate") shall thereafter represent the right to
receive, upon the surrender of such Certificate in accordance with the
provisions of Section 2.2, but subject to the indemnification provisions of
Article 8 hereof, the Stock Merger Consideration and Cash Merger Consideration
multiplied by the number of Shares represented by such Certificate, and a holder
of more than one Certificate shall have the right to receive the Stock Merger
Consideration and Cash Merger Consideration multiplied by the number of Shares
represented by all such Certificates (the "Exchange Merger Consideration"). The
holders of such Certificates previously evidencing such Shares outstanding
immediately prior to the Effective Time shall cease to have any rights with
respect to such Shares except as otherwise provided herein or by Applicable Law.
Notwithstanding anything to the contrary herein, the Cash Merger Consideration
to be received by any Stockholder prior to the termination of the Escrow
Indemnity Period shall be adjusted to give full effect to the indemnification
provisions in Article 8 hereof.

         (b) Each Share held in the treasury of the Company and each Share owned
by Acquiror or any direct or indirect Subsidiary of Acquiror immediately prior
to the Effective Time shall automatically be cancelled and extinguished without
any conversion thereof and no payment shall be made with respect thereto.

         (c) Each share of common stock of Acquiror Merger Subsidiary
outstanding immediately prior to the Effective Time shall be converted into and
become one share of common stock of the Surviving Corporation with the same
rights, powers and privileges as the shares so converted and shall constitute
the only outstanding shares of capital stock of the Surviving Corporation.

         (d) In lieu of issuing fractional shares, Acquiror shall convert a
holder's right to receive shares of Acquiror Stock pursuant to Section 2.1(a)
into a right to receive the highest whole number of shares of Acquiror Stock
constituting the non-cash portion of the Exchange Merger Consideration plus cash
equal to the fraction of a share of Acquiror Stock to which the holder would
otherwise be entitled multiplied by the Determination Price, and the Exchange
Merger Consideration to which a holder is entitled shall be deemed to be such
number of shares of Acquiror Stock plus such cash in lieu of fractional shares
plus the cash portion of the Exchange Merger Consideration. For purposes of
carrying out the intent of this Section 2.1(d), Acquiror may aggregate
Certificates so that fractional shares of Acquiror Stock due in exchange for
multiple Certificates may be combined to yield a number of whole shares thereof
plus a single fraction.

         Section 2.2. Exchange of Certificates; Exchange Agent and Exchange
Procedures.

         (a) As soon as reasonably practicable after the Effective Time,
Acquiror shall deposit or cause to be deposited with a bank or trust company
designated by Acquiror (the "Exchange Agent"), for the benefit of the holders of
Shares (other than Dissenting Shares), for exchange in accordance with this
Article, through the Exchange Agent, (i) cash (by wire transfer of federal

                                      I-4
<PAGE>

funds pursuant to instructions reasonably satisfactory to the Exchange Agent) in
an amount equal to the Cash Merger Consideration multiplied by the number of all
Shares issued and outstanding immediately prior to the Effective Time (other
than Shares to be cancelled pursuant to Section 2.1(b) and any Dissenting
Shares) (said number of Shares less said Shares to be cancelled and less said
Dissenting Shares hereafter to be referred to as the "Net Shares"), less the
amount of cash constituting the Escrow Indemnity Funds, and (ii) the Stock
Merger Consideration multiplied by the Net Shares, plus cash in an amount
sufficient to make payment for fractional shares, in exchange for all of the
outstanding Shares (collectively, the "Exchange Fund"). Subject to Article 8
hereof, the Exchange Agent shall, pursuant to irrevocable instructions from
Acquiror, deliver the Exchange Merger Consideration to be issued pursuant to
Section 2.1(a) out of the Exchange Fund to holders of Shares upon transmittal of
Certificates for exchange as provided therein and in Section 2.2(b). The
Exchange Fund shall not be used for any other purpose. Any interest, dividends
or other income earned by the Exchange Fund shall be for the account of
Acquiror.

         (b) As soon as reasonably practicable after the Effective Time,
Acquiror will instruct the Exchange Agent to issue (pursuant to instructions
from each holder of record reasonably satisfactory to Acquiror and the Exchange
Agent, and otherwise by mail to the most recent address of such holder as shown
on the Company's books and records) to such holder of a Certificate or
Certificates which immediately prior to the Effective Time evidenced outstanding
Shares (other than Shares to be cancelled pursuant to Section 2.1(b) and any
Dissenting Shares), a letter of transmittal (which shall specify that delivery
shall be effected, and risk of loss and title to the Certificates shall pass,
only upon proper delivery of the Certificates to the Exchange Agent and shall be
in such form and have such other provisions as Acquiror and the Company may
reasonably specify) and instructions to effect the surrender of the Certificates
in exchange for the Exchange Merger Consideration. Upon surrender of a
Certificate for cancellation to the Exchange Agent or to such other agent or
agents as may be appointed by Acquiror together with such letter of transmittal,
duly executed, and such other customary documents as may be reasonably required
pursuant to such instructions (collectively, the "Transmittal Documents"), the
holder of such Certificate shall be entitled to receive in exchange therefor the
Exchange Merger Consideration which such holder has the right to receive,
subject to Article 8 hereof, pursuant to Sections 2.1(a) and 2.1(d) hereof, and
the Certificate so surrendered shall forthwith be cancelled. In the event of a
transfer of ownership of Shares which is not registered in the transfer records
of the Company, the Exchange Merger Consideration may be issued and paid in
accordance with this Article to a transferee if the Certificate evidencing such
Shares is presented to the Exchange Agent, accompanied by all documents
reasonably required to evidence and effect such transfer and by evidence that
any applicable stock transfer taxes have been paid. The Exchange Merger
Consideration will be delivered by the Exchange Agent promptly following
surrender of a Certificate and the related Transmittal Documents, and cash
payments for fractional shares and the cash portion of the Exchange Merger
Consideration may be made by check (or, pursuant to instructions reasonably
satisfactory to the Exchange Agent, by wire transfer). No interest will be
payable on the Exchange Merger Consideration regardless of any delay in making
payments. Until surrendered as contemplated by this Section, each Certificate
shall be deemed at any time after the Effective Time to evidence only the right
to receive, upon such surrender, the Exchange Merger Consideration, without
interest.


                                      I-5
<PAGE>

         (c) In the event any Certificate shall have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the Person claiming
such Certificate to be lost, stolen or destroyed and subject to such other
conditions as Acquiror reasonably may impose, the Surviving Corporation shall
issue in exchange for such lost, stolen or destroyed Certificate the Exchange
Merger Consideration deliverable in respect thereof as determined in accordance
with Sections 2.1(a) and 2.1(d). Acquiror may, in its discretion and as a
condition precedent to authorizing the issuance thereof by the Surviving
Corporation, require the owner of such lost, stolen or destroyed Certificate to
provide a bond or other surety to Acquiror and the Surviving Corporation in such
sum as Acquiror may reasonably direct as indemnity against any claim that may be
made against Acquiror or the Surviving Corporation (and their Affiliates) with
respect to the Certificate alleged to have been lost, stolen or destroyed.

         (d) Any portion of the Exchange Fund which remains undistributed to the
holders of the Company Stock for ninety (90) days after the Effective Time shall
be delivered to Acquiror upon demand by Acquiror, and any holders of
Certificates who have not theretofore complied with this Article shall
thereafter look only to Acquiror for the Exchange Merger Consideration to which
they are entitled pursuant to this Article.

         (e) None of Acquiror, Acquiror Merger Subsidiary, the Company or the
Surviving Corporation shall be liable to any holder of Shares for any shares of
Acquiror Stock or cash from the Exchange Fund delivered to a public official
pursuant to any applicable abandoned property, escheat or similar law.

         (f) Each of Acquiror, the Surviving Corporation and the Exchange Agent
shall be entitled to deduct and withhold from the consideration otherwise
payable pursuant to this Agreement to any holder of Shares such amounts as
Acquiror, the Surviving Corporation or the Exchange Agent is required to deduct
and withhold with respect to the making of such payment under the Code, or any
provision of federal, state, local or foreign tax law. To the extent that
amounts are so withheld by Acquiror, the Surviving Corporation or the Exchange
Agent, such withheld amounts shall be treated for all purposes of this Agreement
as having been paid to the holder of the Shares in respect of which such
deduction and withholding was made by Acquiror, the Surviving Corporation or the
Exchange Agent.

         Section 2.3. Stock Transfer Books. At the Effective Time, the stock
transfer books of the Company shall be closed, and there shall be no further
registration of transfers of Shares thereafter on the records of the Company
other than to Acquiror. On or after the Effective Time, any Certificate
presented to the Exchange Agent or the Surviving Corporation shall be converted
into the Exchange Merger Consideration.

         Section 2.4. Option Securities

         (a) As soon as reasonably practicable after the Effective Time, each
holder of an Option Security who elects to shall receive, subject to the
indemnification provisions of Article 8 hereof, (i) subject to clause (ii)
below, in respect of any such Option Security or portion thereof which is
exercisable at the Effective Time (including those which will become exercisable
by virtue of the consummation of the Merger) (1) a non-qualified option to
acquire shares of Acquiror Stock under Acquiror's 1995 Stock Incentive Plan,
which option for Acquiror

                                      I-6
<PAGE>

Stock shall (A) have an exercise price per share determined by dividing the
exercise price per share of the applicable Option Security by the Stock
Conversion Number and (B) entitle the holder to purchase that number of shares
equal to the product of (x) the number of shares subject to such Option Security
which as of the Effective Time is exercisable and (y) the Stock Conversion
Number, and (2) cash in the amount of the product of (x) the number of shares
subject to such Option Security which as of the Effective Time is exercisable
and (y) the Cash Conversion Number, and (ii) in respect of any such Option
Security or portion thereof which is not exercisable at the Effective Time and
in respect of those Option Securities to acquire 17,500 shares of Company Stock
recently granted to the five individuals identified in Section 3.13(b) of the
Disclosure Schedule, a non-qualified option to acquire shares of Acquiror Stock
under Acquiror's 1995 Stock Incentive Plan at an exercise price and in an amount
affording the holder equivalent value for the Option Security being exchanged,
which option for Acquiror Stock shall (1) have an exercise price per share
determined by dividing (x) the exercise price per share of the applicable Option
Security by (y) the quotient of the Share Price divided by the Determination
Price, and (2) entitle the holder to purchase that number of shares as equals
the product of (x) the number of shares subject to such Option Security which as
of the Effective Time is not exercisable and (y) the quotient of the Share Price
divided by the Determination Price. In addition, each option to acquire Acquiror
Stock issued in accordance with this Section 2.4 shall be exercisable (subject
to the terms of such Option Security and Acquiror's 1995 Stock Incentive Plan)
on the date the applicable Option Security would have been exercisable and
otherwise be subject to the terms and conditions of the Acquiror 1995 Stock
Incentive Plan (it being understood that the terms of the Acquiror option
agreement, as to any employee, other than the Principal Stockholders, of the
Company who is not employed by Acquiror or any of its Affiliates on the first
anniversary of the Closing Date, shall not (a) make it a condition to exercise
such option that such employee be in compliance with an Acquiror confidentiality
or non-competition agreement and (b) require such employee to pay to Acquiror
the excess of the fair market value on the day of exercise over the exercise
price as a result of being employed by a competitor of Acquiror within two years
after the exercise of such option). Notwithstanding anything to the contrary
herein, the cash to be received herein by any holder of an Exercisable Option
prior to the termination of the Escrow Indemnity Period shall be adjusted to
give full effect to the indemnification provisions of Article 8 hereof.

         (b) In lieu of issuing any option to acquire a fractional share of
Acquiror Stock, Acquiror shall convert a holder's right to receive an option
pursuant to this Section 2.4 into a right to receive an option to acquire the
nearest whole number of shares of Acquiror Stock (with no adjustment to any cash
amount received in connection with the conversion of an Exercisable Option).

         (c) Notwithstanding the foregoing, in lieu of issuing cash in respect
of exercisable Option Securities, Acquiror reserves the right, in its sole
discretion, subject to notification to the Company not less than ten (10) days
prior to the Closing Date, to exchange each vested and exercisable Option
Security solely for an option to acquire Acquiror Stock, the terms and
conditions (including, without limitation, the amount and exercise price per
share) of which will be determined in accordance with clause (a)(ii) above.

         Section 2.5.      Dissenting Shares.
         


                                      I-7
<PAGE>

         (a) Notwithstanding any other provision of this Agreement to the
contrary, Shares that are outstanding immediately prior to the Effective Time
and which are held by Stockholders who shall have not voted in favor of the
Merger or consented thereto in writing and who shall be entitled to and shall
have demanded properly in writing appraisal for such Shares in accordance with
the DGCL, and who shall not have withdrawn such demand or otherwise have
forfeited appraisal rights (collectively, the "Dissenting Shares") shall not be
converted into or represent the right to receive the Merger Consideration. Such
Stockholders shall be entitled to receive payment of the appraised value of such
Shares held by them in accordance with the provisions of the DGCL, except that
all Dissenting Shares held by Stockholders who shall have failed to perfect or
who effectively shall have withdrawn, forfeited or lost their rights to
appraisal of such Shares under the DGCL shall thereupon be deemed to have been
converted into and to have become exchangeable for, as of the Effective Time,
the right to receive, without any interest thereon, the Exchange Merger
Consideration, upon surrender, in the manner provided in Section 2.2, of the
Certificate or Certificates that formerly evidenced such Shares.

         (b) The Company shall give Acquiror prompt notice of any demands for
appraisal received by it, withdrawals of such demands, and any other instruments
served pursuant to the DGCL and received by the Company and relating thereto.
The Company and Acquiror shall jointly direct all negotiations and proceedings
with respect to demands for appraisal under Applicable Law. The Company shall
not, except with the prior written consent of Acquiror, make any payment with
respect to any demands for appraisal, or offer to settle, or settle, any such
demands.

         Section 2.6       Standstill.

         (a) Until the first anniversary of the Effective Time, except as
permitted by Acquiror's Restated By-Laws, any Person who receives or is entitled
to receive at the Effective Time any shares of Acquiror Stock pursuant to
Section 2.1 shall not Transfer (as such term is defined in Exhibit 2.6 hereto),
and Acquiror shall not be required to register the Transfer of, the number of
shares, rounded upward to the nearest whole share (the "Subject Shares"), of
Acquiror Stock equal to the product of (1) the quotient obtained by dividing (x)
the "Lock-up Value" by (y) the product of (A) the Common Stock Amount and (B)
the lesser of the Closing Price and the Determination Price multiplied by (2)
the Stock Merger Consideration received by such Person in connection with the
Merger. The "Lock-up Value" shall mean one half (1/2) of the sum of (x) the
product of the Common Stock Amount and the lesser of the Closing Price and the
Determination Price plus (y) the Cash Amount. The "Closing Price" shall mean the
closing price per share of Acquiror Stock for the trading day immediately prior
to the Effective Time. The closing price for such trading day shall be the last
quoted sale price or, if not so quoted, the average of the low bid and high
asked prices on the Nasdaq National Market System.

         (b) Each certificate representing Subject Shares issued pursuant to the
Merger shall bear the following legend:

                  "The shares represented by this certificate may not be
         transferred prior to [first anniversary date of the Effective Time to
         be inserted] except as otherwise permitted by the Restated By-Laws of
         the Corporation. A copy of the Restated By-Laws of the Corporation will
         be furnished without charge upon written request addressed to the

                                      I-8
<PAGE>

         Corporation at 745 Atlantic Avenue, Boston, Massachusetts 02111,
         Attention:  Chief Executive Officer."

         (c) In order to implement the provisions of this Section 2.6, the
Restated By-Laws of Acquiror shall be amended on or prior to the Closing Date to
include the provisions as to the limitations on the transferability of the
Acquiror Stock set forth in Exhibit 2.6 hereto."


                                   ARTICLE 3.

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company hereby represents and warrants to, and for Section 3.16
represents, warrants and covenants to, and agrees with, Acquiror and Acquiror
Merger Subsidiary as follows:

         Section 3.1. Organization and Business; Power and Authority; Effect of 
Transaction.         

         (a)      The Company:

                  (i)  is a corporation duly organized, validly existing and in
         good standing under the laws of the State of Delaware,

                  (ii) has all requisite power and corporate authority to own or
         hold under lease its properties and to conduct its business as now
         conducted and as presently proposed to be conducted, and, to the
         Company's knowledge, except as set forth in Section 3.1(a)(ii) to the
         Disclosure Schedule, has in full force and effect all Governmental
         Authorizations and Private Authorizations and has made all Governmental
         Filings, to the extent required for such ownership and lease of its
         property and conduct of its business, and

                  (iii) is, to the Company's knowledge, duly qualified and
         authorized to do business and is in good standing as a foreign
         corporation in each jurisdiction (a true and correct list of which is
         set forth in Section 3.1(a) of the Disclosure Schedule) in which the
         character of its property or the nature of its business or operations
         requires such qualification or authorization, except to the extent the
         failure to so qualify or to maintain such authorizations would not have
         an Adverse Effect.

         (b) The Company has all requisite power and corporate authority and has
in full force and effect all Governmental Authorizations and Private
Authorizations in order to enable it to execute and deliver, and to perform its
obligations under, this Agreement and each Collateral Document executed or
required to be executed by it pursuant hereto or thereto and to consummate the
Merger and the Transactions, and the execution, delivery and performance of this
Agreement and each Collateral Document executed or required to be executed
pursuant hereto or thereto have been duly authorized by all requisite corporate
or other action (other than that of the Stockholders). This Agreement has been
duly executed and delivered by the Company and, subject to the affirmative vote
of the Stockholders referred to below, constitutes, and each Collateral Document
executed or required to be executed pursuant hereto or thereto

                                      I-9
<PAGE>

or to consummate the Merger and the Transactions, when executed and delivered by
the Company or an Affiliate of the Company will constitute, legal, valid and
binding obligations of the Company or such Affiliate, enforceable in accordance
with their respective terms, except as such enforceability may be subject to
bankruptcy, moratorium, insolvency, reorganization, arrangement, voidable
preference, fraudulent conveyance and other similar laws relating to or
affecting the rights of creditors and except as the same may be subject to the
effect of general principles of equity (the "Enforceability Exceptions"). The
affirmative vote or action by written consent of the holders of a majority of
the outstanding Shares is the only vote of the holders of any class or series of
the capital stock of the Company necessary to approve this Agreement, the Merger
and the Transactions under Applicable Law and the Company's Organic Documents.
The provisions of Section 203 of the DGCL will not apply to this Agreement, the
Merger or the Transactions.

         (c) Except as set forth in Section 3.1(c) of the Disclosure Schedule,
neither the execution and delivery of this Agreement or any Collateral Document
executed or required to be executed pursuant hereto or thereto, nor the
consummation of the Transactions, nor compliance with the terms, conditions and
provisions hereof or thereof by the Company or any of the other parties hereto
or thereto which is Affiliated with the Company:

                  (i) will conflict with, or result in a breach or violation of,
         or constitute a default under, any Applicable Law on the part of the
         Company or will conflict with, or result in a breach or violation of,
         or constitute a default under, or permit the acceleration of any
         obligation or liability in, or but for any requirement of giving of
         notice or passage of time or both would constitute such a conflict
         with, breach or violation of, or default under, or permit any such
         acceleration in, any Contractual Obligation of the Company,

                  (ii) will result in or permit the creation or imposition of 
         any Lien upon any property now owned or leased by the Company or any
         such other party, or

                  (iii) will require any Governmental Authorization or
         Governmental Filing or Private Authorization, except for the
         certificate of merger and related filings under the DGCL in connection
         with the Merger and the Transactions and except pursuant to the HSR
         Act.

         (d)      The Company does not have any Subsidiaries.

         Section 3.2.   Financial and Other Information.
                     
         (a) The Company has heretofore furnished to Acquiror copies of the
financial statements of the Company listed in Section 3.2(a) of the Disclosure
Schedule (the "Financial Statements"). The Financial Statements, including in
each case the notes thereto, have been prepared in accordance with GAAP applied
on a consistent basis throughout the periods covered thereby, except as
otherwise noted therein or in Section 3.2(a) of the Disclosure Schedule, are
true, correct and complete, do not contain any untrue statement of a material
fact or omit to state a material fact required by GAAP to be stated therein or
necessary in order to make the statements contained therein not misleading,
subject to normal year-end audit adjustments which adjustments, in the
aggregate, shall not be material, and fairly present the financial condition and

                                      I-10
<PAGE>

results of operations of the Company, on the bases therein stated, as of the
respective dates thereof, and for the respective periods covered thereby
subject, in the case of unaudited financial statements to normal nonmaterial
year-end audit adjustments and accruals.

         (b) To the Company's knowledge, neither the Disclosure Schedule, the
Financial Statements, this Agreement nor any Collateral Document furnished or to
be furnished by or on behalf of the Company or any of the Stockholders pursuant
to this Agreement or any Collateral Document executed or required to be executed
by or on behalf of the Company or the Stockholders pursuant hereto or thereto or
to consummate the Merger and the Transactions, contains or will contain any
untrue statement of a material fact or omits or will omit to state a material
fact required to be stated in such document by its terms or necessary in order
to make the statements contained herein or therein not misleading and, to the
Company's knowledge, all such Collateral Documents are and will be true, correct
and complete.

         (c) The Company does not own any capital stock or equity or other
interest in any other Entity or enterprise, however organized and however such
interest may be denominated or evidenced, except as set forth in Section 3.2(c)
of the Disclosure Schedule.

         Section 3.3. Changes in Condition. Since the date of the most recent
financial statements forming part of the Financial Statements, except to the
extent specifically described in Section 3.3 of the Disclosure Schedule, there
has been no Adverse Change in the Company. To the Company's knowledge, there is
no Event known to the Company which Adversely Affects, or in the future might
(so far as the Company can now reasonably foresee) Adversely Affect, the Company
or the ability of the Company to perform any of the obligations set forth in
this Agreement or any Collateral Document executed or required to be executed
pursuant hereto or thereto except for changes in general economic conditions or
the industry in general and to the extent set forth in Section 3.3 of the
Disclosure Schedule.

         Section 3.4. Liabilities. At the date of the most recent balance sheet
forming part of the Financial Statements, the Company had no obligations or
liabilities, past, present or deferred, accrued or unaccrued, fixed, absolute,
contingent or other, except as disclosed in such balance sheet, or the notes
thereto, and since such date the Company has not incurred any such obligations
or liabilities, other than obligations and liabilities incurred in the ordinary
course of business consistent with past practice of the Company, which do not
and, to the Company's knowledge, will not, in the aggregate, Adversely Affect
the Company, except to the extent set forth in Section 3.4 of the Disclosure
Schedule. The Company has not Guaranteed and is not otherwise primarily or
secondarily liable in respect of any obligation or liability of any other
Person, except for endorsements of negotiable instruments for deposit in the
ordinary course of business, consistent with prior practice, or as disclosed in
the most recent balance sheet, or the notes thereto, forming part of the
Financial Statements or in Section 3.4 of the Disclosure Schedule.


                                      I-11
<PAGE>

         Section 3.5.      Title to Properties; Leases.

         (a) The Company does not own any real property. To the Company's
knowledge, the Company has good leasehold title with respect to all real
property it leases. The Company has good indefeasible and merchantable title to
all other assets, tangible and intangible, reflected on the most recent balance
sheet forming part of the Financial Statements, or (excluding leased real
estate) held by the Company for use in its business if not so reflected, or
purported to have been acquired by the Company since such date, except inventory
sold or depleted, or property, plant and other equipment used up or retired,
since such date, in each case in the ordinary course of business consistent with
past practice of the Company, free and clear of all Liens, except (i) Liens
reflected in the Financial Statements, (ii) Liens for current taxes not yet due
and payable, (iii) Liens set forth on Section 3.5(a) of the Disclosure Schedule,
(iv) Liens that will be released prior to the Closing Date (and which are listed
on Section 3.5(a) of the Company Disclosure Schedule), and (v) such
imperfections of title, easements, encumbrances and mortgages or other Liens, if
any, as are not, individually or in the aggregate, substantial in character,
amount or extent and do not materially detract from the value, or materially
interfere with the present use, of the property subject thereto or affected
thereby, or otherwise materially impair business operations. Each Lease or other
occupancy or other agreement under which the Company holds real or personal
property has been duly authorized, executed and delivered by the Company and, to
the Company's knowledge, by each of the other parties thereto; each such Lease
is a legal, valid and binding obligation of the Company and, to the Company's
knowledge, of each other party thereto, enforceable in accordance with its terms
(subject to the Enforceability Exceptions). To the Company's knowledge, the
Company has a valid leasehold interest in and enjoys peaceful and undisturbed
possession under all Leases pursuant to which it holds any real property or
tangible personal property, none of which, to the Company's knowledge, contains
any provision which would impair the Company's ability to use such property as
it is currently used by the Company, except as described in Section 3.5(a) of
the Disclosure Schedule. To the Company's knowledge, (i) all of such Leases are
valid and subsisting and in full force and effect and (ii) except as set forth
in Section 3.5(a) of the Disclosure Schedule, neither the Company nor any other
party thereto is in default in the performance, observance or fulfillment of any
obligation, covenant or condition contained in any such Lease.

         (b) Section 3.5(b) of the Disclosure Schedule contains a true, correct
and complete description of all real estate leased by the Company.

         (c) To the Company's knowledge, except as set forth in Section 3.5(c)
of the Disclosure Schedule, all real property leased by the Company conforms to
and complies with, except as in the aggregate would not result in an Adverse
Effect on the Company, all applicable title covenants, conditions, restrictions
and reservations and all Environmental Laws and all applicable zoning, wetlands,
land use and other Applicable Laws.

         Section 3.6. Compliance with Private Authorizations. Section 3.6 of the
Disclosure Schedule sets forth, to the Company's knowledge, a true, correct and
complete list and description of each Private Authorization which individually
is material to the Company, all of which are in full force and effect, except as
set forth in Section 3.6 of the Disclosure Schedule. To the Company's knowledge,
the Company has obtained all Private Authorizations which are

                                      I-12
<PAGE>

necessary for the ownership by the Company of its properties and the conduct of
its business as now conducted or as presently proposed to be conducted or which,
if not obtained and maintained, could, singly or in the aggregate, Adversely
Affect the Company. To the Company's knowledge, except as set forth in Section
3.6 of the Disclosure Schedule, (i) the Company is not in breach or violation
of, or is in default in the performance, observance or fulfillment of, any
Private Authorization, and (ii) no Event exists or has occurred, which
constitutes, or but for any requirement of giving of notice or passage of time
or both would constitute, such a breach, violation or default, under any
Contractual or Private Authorization, except for such defaults, breaches or
violations as do not and, to the Company's knowledge, will not in the aggregate
have any Adverse Effect on the Company or the ability of the Company to perform
any of the obligations set forth in this Agreement or any Collateral Document
executed or required to be executed pursuant hereto or thereto or to consummate
the Merger and the Transactions. No material Private Authorization is the
subject of any pending or, to the Company's knowledge, threatened attack,
revocation or termination.

         Section 3.7. Compliance with Governmental Authorizations and Applicable
Law.

         (a) Section 3.7(a) of the Disclosure Schedule contains a description
of:

                  (i) all Legal Actions which are pending in which the Company
         is engaged, or which involve the business, operations or properties of
         the Company or, to the Company's knowledge, which are threatened or
         contemplated against, the Company or any of its business, operations or
         properties, which in the case of such threatened or contemplated Legal
         Actions, individually or in the aggregate, if determined against the
         Company would reasonably be expected to have an Adverse Effect on the
         Company; and

                  (ii) to the Company's knowledge, each Governmental
         Authorization to which the Company is subject and which relates to the
         business, operations, properties, prospects, condition (financial or
         other), or results of operations of the Company, all of which are in
         full force and effect, except as set forth in Section 3.7(a)(ii) of the
         Disclosure Schedule.

         (b) To the Company's knowledge, the Company has obtained all
Governmental Authorizations which are necessary for the ownership or use of its
properties and the conduct of its business as now conducted or as presently
proposed to be conducted by the Company or which, if not obtained and
maintained, could singly or in the aggregate, have any Adverse Effect on the
Company. No material Governmental Authorization is the subject of any pending
or, to the Company's knowledge, threatened attack, revocation or termination. To
the Company's knowledge, (i) the Company is not in material breach or violation
of, or in default in the performance, observance or fulfillment of, any
Governmental Authorization or any Applicable Law, and (ii) no Event exists or
has occurred, which constitutes, or but for any requirement of giving of notice
or passage of time or both would constitute, such a breach, violation or
default, under any Governmental Authorization or any Applicable Law, except for
such breaches, violations or defaults as do not and, to the Company's knowledge,
will not have in the aggregate any Adverse Effect on the Company.


                                      I-13
<PAGE>

         (c) The matters, if any, referred to in Sections 3.7(a) or 3.7(b) of
the Disclosure Schedule, if adversely determined against the Company, will not
Adversely Affect the Company, except to the extent set forth in the Disclosure
Schedule, or the ability of the Company to perform its obligations under this
Agreement or any Collateral Documents executed or required to be executed
pursuant hereto or thereto or to consummate the Merger and the Transactions.

         Section 3.8. Intangible Assets. Section 3.8 of the Disclosure Schedule
sets forth a true, accurate and complete description of all Intangible Assets
held or used by the Company, including without limitation the nature of the
Company's interest in each and the extent to which the same have been duly
registered in the offices as indicated therein. To the Company's knowledge, the
Company owns or possesses or otherwise has the right to use all Intangible
Assets necessary for the present and planned future conduct of its business,
except where the failure to so own, possess or have the right to use would not,
insofar as can reasonably be foreseen, individually or in the aggregate, have an
Adverse Effect on the Company. To the Company's knowledge, except as set forth
in Section 3.8 of the Disclosure Schedule, no authorizations or intangible
assets (except the Intangible Assets so set forth) are required for the Company
to conduct its business as currently conducted or proposed to be conducted on or
prior to the Closing Date. Except as set forth in Section 3.8 of the Disclosure
Schedule, the Company possesses all proprietary rights in and to the principal
software used in operating and conducting its business and no other Person has
any rights therein or with respect thereto.

         Section 3.9. Related Transactions. Section 3.9 of the Disclosure
Schedule sets forth a true, correct and complete description of any Contractual
Obligation or transaction, whether now existing or existing during the period
covered by the most recent audited Financial Statements, between the Company and
any Affiliate thereof (other than reasonable compensation for services as
officers, directors and employees and reimbursement for out-of-pocket expenses
reasonably incurred in support of the Company's business), including without
limitation any providing for the furnishing of services to or by, providing for
rental of property, real, personal or mixed, to or from, or providing for the
lending or borrowing of money to or from or otherwise requiring payments to or
from, any such Affiliate.

         Section 3.10. Insurance.

         (a) Section 3.10(a) of the Disclosure Schedule lists all insurance
policies maintained by the Company and includes the insurers' names, policy
numbers, expiration dates, risks insured against, amounts of coverage, the
annual premiums, exclusions, deductibles and self-insured retention and
describes in reasonable detail any retrospective rating plan, fronting
arrangement or any other self-insurance or risk assumption agreed to by the
Company or imposed upon the Company by any such insurers, as well as any
self-insurance program that is in effect.

         (b) To the Company's knowledge, the Company is not in breach or
violation of or in default under any such policy, and all premiums due thereon
have been paid, and each such policy or a comparable replacement policy will
continue to be in force and effect up to and including the Closing Date.


                                      I-14
<PAGE>

         Section 3.11. Tax Matters.

         (a) The Company has in accordance with all Applicable Laws filed all
Tax Returns which are required to be filed, and has paid, or made adequate
provision for the payment of, all Taxes which have or may become due and payable
pursuant to said Returns and all other governmental charges and assessments
received to date. The Tax Returns of the Company have been prepared in
accordance with all Applicable Laws and generally accepted principles applicable
to taxation consistently applied. All Taxes which the Company is required by law
to withhold and collect have been duly withheld and collected, and have been
paid over, in a timely manner, to the proper Authorities to the extent due and
payable. The Company has not executed any waiver to extend, or otherwise taken
or failed to take any action that would have the effect of extending, the
applicable statute of limitations in respect of any Tax liabilities of the
Company for the fiscal years prior to and including the most recent fiscal year.
Adequate provision has been made on the most recent balance sheet forming part
of the Financial Statements for all Taxes of any kind, including interest and
penalties in respect thereof, whether disputed or not, and whether past, current
or deferred, accrued or unaccrued, fixed, contingent, absolute or other, and to
the knowledge of the Company there are no transactions or matters or any basis
which might or could result in additional Taxes of any nature to the Company for
which an adequate reserve has not been provided on such balance sheet. The
Company is not a "consenting corporation" within the meaning of Section 341(f)
of the Code. The Company has at all times been taxable as a Subchapter C
corporation under the Code, except as otherwise set forth in Section 3.11(a) of
the Disclosure Schedule. The Company has never been a member of any consolidated
group (other than exclusively with the Company and its former Subsidiaries) for
Tax purposes, except as set forth in Section 3.11(a) of the Disclosure Schedule.

         (b) The Company has paid all Taxes which have become due pursuant to
its Returns and has paid all installments (to the extent required to avoid
material underpayment penalties) of estimated Taxes due and payable.

         (c) From the end of its most recent fiscal year to the date hereof, the
Company has not made any payment on account of any Taxes except regular payments
required in the ordinary course of business, consistent with prior practice,
with respect to current operations or property presently owned.

         (d) The information shown on the Federal income Tax Returns of the
Company (true, correct and complete copies of which have been furnished by the
Company to Acquiror) is true, correct and complete and fairly and accurately
reflects the information purported to be shown. Federal and state income Tax
Returns of the Company have been examined by the IRS or applicable state
Authority through the taxable periods set forth in Section 3.11(d) of the
Disclosure Schedule, and the Company has not been notified regarding any pending
examination, except as shown in Section 3.11(d) of the Disclosure Schedule.

         (e) The Company is not a party to any tax sharing agreement or
arrangement.

         (f) The Company is not, and within five years of the date hereof has
not been, a "United States real property holding corporation" as defined in
Section 897 of the Code.


                                      I-15
<PAGE>

         Section 3.12. ERISA.

         (a) The Company (which for purposes of this Section 3.12 shall include
any ERISA Affiliate with respect to any Plan subject to Title IV of ERISA) does
not contribute to any Plan or sponsor any Plan or Benefit Arrangement and has
not contributed to or sponsored any Plan or Benefit Arrangement, except as set
forth in Section 3.12(a) of the Disclosure Schedule. As to all Plans and Benefit
Arrangements listed in Section 3.12(a) of the Disclosure Schedule, and except as
disclosed in such Section 3.12(a) of the Disclosure Schedule:

                  (i) to the Company's knowledge, all such Plans and Benefit
         Arrangements comply and have been administered in all material respects
         in form and in operation with all Applicable Laws, and the Company has
         not received any outstanding notice from any Authority questioning or
         challenging such compliance;

                  (ii) to the Company's knowledge, all such Plans maintained or
         previously maintained by the Company that are or were intended to
         comply with Section 401 of the Code comply and complied in form and in
         operation with all applicable requirements of such Section, and no
         event has occurred which will or could reasonably be expected to give
         rise to disqualification of any such Plan under such Section or to a
         tax under Section 511 of the Code;

                  (iii) none of the assets of any such Plan are invested in
         employer securities or employer real property;

                  (iv) there are no "prohibited transactions" (as described in
         Section 406 of ERISA or Section 4975 of the Code) with respect to any
         such Plan and the Company has not otherwise engaged in any prohibited
         transaction;

                  (v) to the Company's knowledge, there have been no acts or
         omissions by the Company which have given rise to or may reasonably be
         expected to give rise to material fines, penalties, taxes or related
         charges under Sections 502(c), 502(i) or 4071 of ERISA or Chapter 43 of
         the Code for which the Company may be liable;

                  (vi) there are no Claims (other than routine claims for
         benefits) pending or, to the Company's knowledge, threatened involving
         such Plans or the assets of such Plans, except as set forth on Section
         3.12(a)(vi) of the Disclosure Schedule;

                  (vii) no such Plan is subject to Title IV of ERISA, or if
         subject, there have been no "reportable events" (as described in
         Section 4043 of ERISA) as to which there is any material risk of
         termination of such Plan, and no steps have been taken to terminate any
         such Plan;

                  (viii) to the extent that the most recent balance sheet
         forming part of the Financial Statements do not include a pro rata
         amount of the contributions which would otherwise have been made in
         accordance with past practices for the Plan years which include the
         Closing Date, such amounts are set forth in Section 3.12(a)(viii) of
         the Disclosure Schedule;

                                      I-16
<PAGE>


                  (ix) to the Company's knowledge, neither the Company nor any
         of its directors, officers, employees or any other fiduciary has
         committed any breach of fiduciary responsibility imposed by ERISA that
         would subject the Company or any of its directors, officers or
         employees to liability under ERISA;

                  (x) no such Plan which is subject to Part 3 of Subtitle B of
         Title I of ERISA or Section 412 of the Code had an accumulated funding
         deficiency (as defined in Section 302 of ERISA and Section 412 of the
         Code), whether or not waived, as of the last day of the most recently
         completed fiscal year of such Plan;

                  (xi) no material liability to the PBGC has been or is expected
         by the Company to be incurred by the Company with respect to any such
         Plan, and there has been no event or condition which presents a
         material risk of termination of any such Plan by the PBGC;

                  (xii) except as set forth in Section 3.12(a)(xii) of the
         Disclosure Schedule (which entry, if applicable, shall indicate the
         present value of accumulated plan liabilities calculated in a manner
         consistent with FAS 106 and actual annual expense for such benefits for
         each of the last two (2) years) and pursuant to the provisions of
         COBRA, which provisions have been complied with in all material
         respects, the Company does not maintain any Plan that provides benefits
         described in Section 3(1) of ERISA to any former employees or retirees
         of the Company or any of its former Subsidiaries;

                  (xiii) the Company has made available to Acquiror a copy of
         the two most recently filed Federal Form 5500 series and accountant's
         opinion, if applicable, for each Plan (and the two most recent
         actuarial valuation reports for each Plan, if any, that is subject to
         Title IV of ERISA), and all information provided by the Company to any
         actuary in connection with the preparation of any such actuarial
         valuation report was true, correct and complete in all material
         respects; and

                  (xiv) the Company has delivered to Acquiror correct and
         complete copies of all Plans and Benefit Arrangements and, where
         applicable, each of the following documents with respect to such plans:
         (i) any amendments; (ii) any related trust documents; (iii) the most
         recent summary plan descriptions and summaries of material
         modifications; and (iv) written communications to employees to the
         extent the substance of the Plans and Benefit Arrangements described
         therein differ materially from the other documentation furnished under
         this clause.

                  (b) The Company is not and has never has been a party to any
         Multiemployer Plan or made contributions to any such plan.

         Section 3.13. Authorized and Outstanding Capital Stock.

         (a) The authorized and outstanding capital stock, Option Securities and
Convertible Securities of the Company is as set forth in Section 3.13(a) of the
Disclosure Schedule. All of such outstanding capital stock has been duly
authorized and validly issued, is fully paid and

                                      I-17
<PAGE>

nonassessable and is not subject to any preemptive or similar rights. Except as
set forth in Section 3.13(a) of the Disclosure Schedule, (i) there is neither
outstanding nor has the Company agreed to grant or issue any shares of its
capital stock or any Option Security or Convertible Security, and (ii) the
Company is not a party to and is not bound by any agreement, put or commitment
pursuant to which it is obligated to purchase, redeem or otherwise acquire any
shares of capital stock or any Option Security or Convertible Security. Between
the date hereof and the Closing, the Company will not issue, sell or purchase or
agree to issue, sell or purchase any capital stock or any Option Security or
Convertible Security of the Company, except to the extent required pursuant to
the terms hereof. All of the issued and outstanding Shares were issued and sold,
and all Option Securities were granted, in compliance with the Securities Act,
the Exchange Act and applicable state securities laws.

         (b) As of the date hereof, except as set forth in Section 3.13(b) of
the Disclosure Schedule,: (i) Option Securities to acquire 424,750 Shares are
outstanding under the Company's 1990 Long-Term Incentive Plan (the "Company
Option Plan"), including in such number Option Securities which are currently
exercisable to acquire 216,950 shares of Company Stock; (ii) Option Securities
to acquire 45,000 Shares are outstanding under the Company's 1990 Nonstatutory
Stock Option Plan for Non-Employee Directors (the "Directors Plan" and, together
with the Company Option Plan, the "Option Plans"), including in such number
Option Securities which are currently exercisable to acquire 45,000 shares of
Company Stock; and (iii) 514,599 Shares are reserved for future issuance
pursuant to Option Securities which may be granted under the Option Plans. In
accordance with the vesting schedules and acceleration provisions contained in
the Option Plans and the related option agreements and assuming all option
agreements remain outstanding, as of June 1, 1997, Option Securities would be
exercisable to acquire 385,450 Shares. The Option Plans constitute the only
plans or arrangements pursuant to which Option Securities are currently
outstanding. Other than as set forth in Section 3.13(b) of the Disclosure
Schedule, neither the execution and delivery of this Agreement nor the
consummation of the Merger or the Transactions are Events which will cause an
acceleration of the exercise or vesting schedule of any Option Security. The
Company has duly complied in all material respects with all of the terms and
conditions of each Option Plan and no amendment, modification or other revision
to either Option Plan or any related option agreement which required the consent
or approval of a holder of an Option Security has been made unless, in each
case, such consent or approval was duly obtained. All Shares subject to issuance
under an Option Security will, upon issuance on the terms and conditions
specified in such Option Security, will be validly issued, fully paid and
nonassessable.

         (c) All of the outstanding capital stock of the Company is owned by the
Stockholders as set forth in Section 3.13(c) of the Disclosure Schedule and all
of the outstanding Option Securities and Convertible Securities are owned by the
Persons as set forth in Section 3.13(c) of the Disclosure Schedule, and are in
each case, to the Company's knowledge, free and clear of all Liens, except as
set forth in Section 3.13(c) of the Disclosure Schedule, and, to the Company's
knowledge, except as set forth in Section 3.13(c) of the Disclosure Schedule,
there are no options, warrants or other rights, agreements, arrangements or
commitments of any character to which any Stockholder is a party relating to the
pledge, disposition or voting of any shares of the Company Stock that are owned
by such Stockholder, and there are no voting trusts or voting agreements with
respect to such shares.


                                      I-18
<PAGE>

                  Section 3.14. Employment Arrangements.

         (a) The Company does not have any obligation or liability, contingent
or other, under any Employment Arrangement, other than those listed or described
in Section 3.14(a) of the Disclosure Schedule. None of the employees of the
Company is now, or, to the Company's knowledge, during the past five (5) years
has been, represented by any labor union or other employee collective bargaining
organization, or are now, or, to the Company's knowledge, during the past five
(5) years have been, parties to any labor or other collective bargaining
agreement. The Company has performed all obligations required to be performed
under all Employment Arrangements and is not in material breach or violation of
or in default or arrears under any of the terms, provisions or conditions
thereof, except as set forth in Section 3.14(a) of the Disclosure Schedule.
         (b) Except as set forth in Section 3.14(b) of the Disclosure Schedule,
no employee will accrue or receive or is entitled to accrue or receive
additional benefits, service or accelerated rights to payments of benefits under
any Employment Arrangement, including the right to receive any parachute
payment, as defined in Section 280G of the Code, or become entitled to
severance, termination allowance or similar payments as a direct result of this
Agreement, the Merger or the Transactions.

         Section 3.15. Material Agreements. To the Company's knowledge, listed
on Section 3.15 of the Disclosure Schedule are all Material Agreements relating
to the ownership or operation of the business and property of the Company
presently held or used by the Company or to which the Company is a party or to
which it or any of its property is subject or bound. True, complete and correct
copies of each of the Material Agreements have been made available to or
furnished by the Company to Acquiror (or true, complete and correct descriptions
thereof have been set forth in Section 3.15 of the Disclosure Schedule, if any
such Material Agreements are oral). To the Company's knowledge, (i) all of the
Material Agreements are valid, binding and legally enforceable obligations of
the Company and of each other party thereto (subject to the Enforceability
Exceptions), and (ii) the Company is validly and lawfully operating its business
and owning its property under each of the Material Agreements. To the Company's
knowledge, the Company has duly complied in all material respects with all of
the terms and conditions of each Material Agreement and has not done or
performed, or failed to do or perform (and there is no pending or, to the
knowledge of the Company, threatened Claim that the Company has not so complied,
done and performed or fail to do and perform) any act the effect of which would
be to invalidate or provide grounds for the other party thereto to terminate
(with or without notice, passage of time or both) such Material Agreement or
impair the rights or benefits, or increase the costs, of the Company, under any
of the Material Agreements.

         Section 3.16. Ordinary Course of Business.

         (a) The Company, from the date of the most recent balance sheet forming
part of the Financial Statements to the date hereof, and until the Closing Date,
except (i) as may be described on Section 3.16(a) of the Disclosure Schedule,
(ii) as may be required or expressly contemplated by the terms of this
Agreement, (iii) as may be reflected in the Financial Statements, or (iv) as may
be consented to by Acquiror, which consent shall not be unreasonably withheld or
delayed:


                                      I-19
<PAGE>

                  (i) has operated, and will continue to operate, its business
         in the normal, usual and customary manner in the ordinary course of
         business, consistent with prior practice;

                  (ii) has not sold or otherwise disposed of, or contracted to
         sell or otherwise dispose of, and will not sell or otherwise dispose of
         or contract to sell or otherwise dispose of, any of its properties or
         assets, other than in the ordinary course of business;

                  (iii) except in each case in the ordinary course of business,
         consistent with prior practice:

                           (A)   has not incurred and will not incur any
                                 obligations or liabilities (fixed, contingent
                                 or other);

                           (B)   has not entered and will not enter into any
                                 commitments; and

                           (C)   has not cancelled and will not cancel any debts
                                 or claims;

                  (iv) has not made or committed to make, and will not make or
         commit to make, any additions to its property or any purchases of
         machinery or equipment, except in the ordinary course of business,
         consistent with past practice;

                  (v) has not discharged or satisfied, and will not discharge or
         satisfy, any Lien and has not paid and will not pay any obligation or
         liability (absolute or contingent) other than current liabilities or
         obligations under contracts then existing or thereafter entered into in
         the ordinary course of business, consistent with prior practice, and
         commitments under Leases existing on that date or incurred since that
         date in the ordinary course of business or repaying or prepaying
         long-term indebtedness or the current portion thereof;

                  (vi) has not created or permitted to be created, and will not
         create or permit to be created any Lien on any of its tangible
         property;

                  (vii) except in the ordinary course of business, has not
         transferred or created, or permitted to be created, and will not
         transfer or create, or permit to be created, any Lien on any Intangible
         Assets;

                  (viii) except in the ordinary course of business, consistent
         with prior practice, has not increased and will not increase the
         compensation payable or to become payable to any of its directors,
         officers, employees, advisers, consultants, salesmen or agents or
         otherwise alter, modify or change the terms of their employment or
         engagement;

                  (ix) has not suffered any material damage, destruction or loss
         (whether or not covered by insurance) or any acquisition or taking of
         property by any Authority;

                  (x) has not waived, and will not waive, any rights of material
         value without fair and adequate consideration;


                                      I-20
<PAGE>

                  (xi) has not entered into, amended or terminated and will not
         enter into, amend or terminate any Lease, Governmental Authorization,
         Private Authorization, Material Agreement or Employment Arrangement or
         any Contractual Obligation or transaction with any Affiliate, except
         for terminations in the ordinary course of business, consistent
         with prior practice, in accordance with the terms thereof;

                  (xii) has not amended or terminated and will not amend or
         terminate, and has kept and will keep in full force and effect
         including without limitation renewing to the extent the same would
         otherwise expire or terminate, all insurance policies and coverage;

                  (xiii) has not amended and will not amend any provision of its
         Organic Documents;

                  (xiv) has not issued and will not issue any additional shares
         of capital stock (other than the issuance of shares in accordance with
         the terms of Option Securities outstanding on the date hereof, or
         except as set forth in Section 3.13(b) of the Disclosure Schedule) or
         any Option Securities or Convertible Securities and has not entered,
         and will not enter into any agreement to do the same; and

                  (xv) has not entered into and will not enter into any other
         transaction or series of related transactions which individually or in
         the aggregate is material to the Company, except in the ordinary course
         of business.

         (b) From the end of its most recent fiscal year to the date hereof, the
Company has not, or on or prior to the Closing Date will not have, declared,
made or paid, or agreed to declare, make or pay, any Distribution.

         Section 3.17. Bank Accounts, Etc. Section 3.17 of the Disclosure
Schedule contains a true and correct and complete list as of the date hereof of
all banks, trust companies, savings and loan associations and brokerage firms in
which the Company has an account or a safe deposit box and the names of all
Persons authorized to draw thereon, to have access thereto, or to authorize
transactions therein, the names of all Persons, if any, holding powers of
attorney from the Company and a summary statement as to the terms thereof.

         Section 3.18. Adverse Restrictions. To the Company's knowledge, it is
not a party to or subject to, nor is any of its property subject to, any
Applicable Law, Governmental Authorization, Contractual Obligation, Employment
Arrangement, Material Agreement or Private Authorization, or any other
obligation or restriction of any kind or character, or any aggregation thereof,
which impairs in any material respect the Company's ability to conduct its
business as it is currently being conducted or which could, to the Company's
knowledge, have any Adverse Effect on the Company, except as set forth in
Section 3.18 of the Disclosure Schedule.

         Section 3.19. Broker or Finder. Except as set forth in Section 3.19 of
the Disclosure Schedule, no Person assisted in or brought about the negotiation
of this Agreement, the Merger or the subject matter of the Transactions in the
capacity of broker, agent or finder or in any similar capacity on behalf of the
Company or any Principal Stockholder.

                                      I-21
<PAGE>


         Section 3.20. Environmental Matters.

                  (a) Except as set forth in Section 3.20(a) of the Disclosure
         Schedule:

                  (i) to the Company's knowledge, it is, and at all times since
         its organization has been, in compliance in all material respects with
         all Environmental Laws and has not been notified that it is potentially
         liable, has not received any request for information or other
         correspondence concerning any site or facility, and, to the knowledge
         of the Company, is not a "potentially responsible party" under the
         Comprehensive Environmental Response, Compensation and Liability Act of
         1980, as amended, the Resource Conservation Recovery Act, as amended,
         or any similar state law;

                  (ii) the Company has not entered into or received any consent
         decree, compliance order, or administrative order relating to
         Environmental Law;

                  (iii) the Company is not a party in interest or in default
         under any judgment, order, writ, injunction or decree of any final
         order relating to Environmental Law;

                  (iv) to the Company's knowledge, (1) it has obtained all
         material Governmental Authorizations and Private Authorizations
         (including without limitation all Environmental Permits) and made all
         Governmental Filings which are required to be filed by the Company for
         the ownership of its property, facilities and assets and the operation
         of its businesses under all Environmental Laws, (2) it is, and at all
         times since its organization has been, in material compliance with the
         terms and conditions of all such required Governmental and Private
         Authorizations, and (3) it is not the subject of or threatened with any
         Legal Action involving a demand for damages or other potential
         liability with respect to violations or breaches of any Environmental
         Requirement; and

                  (v) has not assumed or agreed to any obligation under any of
         its leases of real property to clean up any Hazardous Materials which
         exists on such property other than as a result of the Company's
         operating and occupying such property.

                  (b) Except as set forth in Section 3.20(b) of the Disclosure
         Schedule:

                  (i) the Company has not disposed, released, buried or placed
         Hazardous Materials on, and, to the Company's knowledge, no other
         disposal, release, burial or placement of Hazardous Materials has
         occurred on, any property or facility leased, operated or occupied by
         the Company during the period that such facilities and properties were
         leased, operated or occupied by it or, to the knowledge of the Company,
         at any other time;

                  (ii) to the knowledge of the Company, there has been no
         disposal, release, burial or placement of Hazardous Materials on any
         property which could reasonably be expected to result or has resulted
         in contamination of or beneath any properties or facilities leased,
         operated or occupied by the Company; and


                                      I-22
<PAGE>

                  (iii) no notice has been received by the Company and to the
         Company's knowledge no Lien has arisen on its properties or facilities
         under Environmental Law.

         (c) The Company has not installed, used or otherwise operated any
above-ground or underground fuel storage tanks on property leased, operated or
occupied by it and, to the Company's knowledge, no above-ground or underground
fuel storage tanks exist on property leased, operated or occupied by it.

         (d) Section 3.20(d) of the Disclosure Schedule sets forth all site
assessments, audits or other investigations that have been conducted by or on
behalf of the Company as to environmental matters at any property leased,
operated or occupied by the Company.


         Section 3.21. Operational Matters. With respect to the Company:

         (a) customers are invoiced for special projects, such as purges,
special destructions, de-boxing and re-filing programs, only with respect to
completed work;

         (b) substantially all of its customers is party to a customer contract
which limits the Company's liability in the event of loss, damage or destruction
to (i) replacement value of media or (ii) a nominal dollar value per storage
unit; and

         (c) the monthly information set forth in Section 3.21 of the Disclosure
Schedule has been prepared consistent with past practice and is true and correct
in all material respects.

         Section 3.22. Materiality. The matters and items excluded from the
representations and warranties set forth in this Article by operation of the
materiality exceptions and materiality qualifications contained in such
representations and warranties, in the aggregate for all such excluded matters
and items, are not and could not reasonably be expected to be Adverse to the
Company.


                                   ARTICLE 4.

                   REPRESENTATIONS AND WARRANTIES OF ACQUIROR
                         AND ACQUIROR MERGER SUBSIDIARY

         Acquiror and Acquiror Merger Subsidiary, jointly and severally,
represent, warrant and covenant to, and agree with, the Company as follows:

         Section 4.1. Organization and Qualification; Power and Authority;
Effect of Transaction.

         (a) Each of Acquiror and Acquiror Merger Subsidiary is a corporation
duly incorporated, validly existing and in good standing under the laws of
Delaware. Each of Acquiror and Acquiror Merger Subsidiary is duly qualified and
authorized to do business and is in good standing as a foreign corporation in
each jurisdiction in which the character of its

                                      I-23
<PAGE>

property or the nature of its business or operations requires such qualification
or authorization, except to the extent the failure to so qualify or to maintain
such authorizations would not have an Adverse Effect.

         (b) Each of Acquiror and Acquiror Merger Subsidiary has all requisite
power and authority (corporate and other) and has in full force and effect all
Governmental Authorizations and Private Authorizations in order to enable it to
execute and deliver, and to perform its obligations under, this Agreement and
each Collateral Document executed or required to be executed pursuant hereto or
thereto and to consummate the Merger and the Transactions; and the execution,
delivery and performance of this Agreement and each Collateral Document executed
or required to be executed pursuant hereto or thereto have been duly authorized
by all requisite corporate or other action. This Agreement has been duly
executed and delivered by each of Acquiror and Acquiror Merger Subsidiary and
constitutes, and each Collateral Document executed or required to be executed
pursuant hereto or thereto when executed and delivered by it will constitute,
legal, valid and binding obligations of Acquiror and Acquiror Merger Subsidiary,
respectively, enforceable in accordance with their respective terms (subject to
the Enforceability Exceptions).

         (c) Neither the execution and delivery of this Agreement or any
Collateral Document executed or required to be executed pursuant hereto or
thereto, nor the consummation of the Transactions, nor compliance with the
terms, conditions and provisions hereof or thereof by each of Acquiror and
Acquiror Merger Subsidiary:

                  (i) will conflict with, or result in a breach or violation of,
         or constitute a default under, any Applicable Law on the part of
         Acquiror or Acquiror Merger Subsidiary or will conflict with, or result
         in a breach or violation of, or constitute a default under, or permit
         the acceleration of any obligation or liability in, or but for any
         requirement of giving of notice or passage of time or both would
         constitute such a conflict with, breach or violation of, or default
         under, or permit any such acceleration in, any Contractual Obligation
         of Acquiror or Acquiror Merger Subsidiary, or

                  (ii) will require any Governmental Authorization or
         Governmental Filing or Private Authorization, except for the
         certificate of merger and related filings under the DGCL in connection
         with the Merger and the Transactions and as the Securities Act and
         applicable state securities laws may apply to compliance by Acquiror
         with the provisions of this Agreement relating to the Registered Stock
         and except pursuant to the HSR Act.

         Section 4.2. Capitalization of Acquiror and Acquiror Merger Subsidiary.

         (a) The authorized and outstanding capital stock of each of Acquiror
and Acquiror Merger Subsidiary is as set forth in Section 4.2 of the Acquiror
Disclosure Schedule. All of such outstanding capital stock has been duly
authorized and validly issued, is fully paid and nonassessable and is not
subject to any preemptive or similar rights. Between the date hereof and the
Closing, except as contemplated by this Agreement, Acquiror Merger Subsidiary
will not issue or sell or purchase or agree to issue or sell or purchase any
capital stock or any Option Security or Convertible Security. All shares of
common stock of Acquiror Merger Subsidiary held by Acquiror have been duly
authorized and validly issued to Acquiror and are fully paid

                                      I-24
<PAGE>

and non-assessable and are not subject to any preemptive or similar rights. As
of the date hereof, except for this Agreement, Acquiror Merger Subsidiary does
not have any outstanding or authorized Convertible Securities. When issued to
the Stockholders in connection with the Merger, the Acquiror Stock will be duly
authorized, validly issued, fully paid and nonassessable and will not be subject
to any preemptive or similar rights.

         (b) Acquiror's 1995 Stock Incentive Plan was duly approved by
Acquiror's stockholders and directors and a sufficient number of shares is
reserved under Acquiror's 1995 Stock Incentive Plan to satisfy Acquiror's
obligations under Section 2.4 hereof.

         Section 4.3.      SEC Filings; Financial Statements.

         (a) Acquiror has filed all forms, reports and documents required to be
filed by it with the SEC since January 30, 1996, and has heretofore made
available to the Company, in the form filed with the SEC (including any exhibits
thereto), (i) its Special Financial Report on Form 10- K for the fiscal year
ended December 31, 1995, (ii) its Quarterly Reports on Form 10-Q for the
quarters ended March 31, 1996, June 30, 1996 and September 30, 1996, (iii) its
proxy statement relating to its 1996 meeting of stockholders, and (iv) all other
forms, reports and registration statements filed by it with the SEC since
January 30, 1996 (the forms, reports and other documents referred to in clauses
(i), (ii), (iii) and (iv) above being referred to herein collectively as the
"Acquiror SEC Reports"). The Acquiror SEC Reports and any forms, reports and
other documents filed by the Acquiror with the SEC after the date of this
Agreement, (x) complied with or will comply in all material respects with the
requirements of the Securities Act and the Exchange Act, as the case may be, and
the rules and regulations thereunder and (y) did not at the time they were
filed, or will not at the time they are filed, contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary in order to make the statements made therein, in the light of the
circumstances under which they were made, not misleading.

         (b) Acquiror's financial statements, including in each case the notes
thereto, contained in the Acquiror SEC Reports have been prepared in accordance
with GAAP applied on a consistent basis throughout the periods covered thereby,
except as otherwise noted therein, are true, correct and complete, do not
contain any untrue statement of a material fact or omit to state a material fact
required by GAAP to be stated therein or necessary in order to make the
statements contained therein not misleading, and fairly present the financial
condition and results of operations of Acquiror and its Subsidiaries, on the
bases therein stated, as of the respective dates thereof, and for the respective
periods covered thereby subject, in the case of unaudited financial statements
to normal nonmaterial year-end audit adjustments and accruals.

         (c) Since the date of Acquiror's most recent report to the SEC (Form
10-Q for the quarter ended September 30, 1996), there has been no Adverse Change
in Acquiror. To Acquiror's knowledge, there is no Event known to Acquiror which
Adversely Affects, or in the future might (so far as Acquiror can now reasonably
foresee) Adversely Affect, Acquiror or the ability of Acquiror to perform any of
the obligations set forth in this Agreement, or any Collateral Document executed
or required to be executed pursuant hereto or thereto, except for changes in
general economic conditions or the industry in general.


                                      I-25
<PAGE>

         Section 4.4. Registration Statement. As of the Closing Date, the
Registration Statement (if any) and any amendments thereto will comply in all
material respects with the provisions of the Securities Act and will not contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading. The Prospectus will not as of the issue date thereof contain any
untrue statement of a material fact or omit to state any material fact necessary
in order to make the statements therein, in the light of the circumstances under
which they were made, not misleading. Notwithstanding the foregoing, the
representations and warranties contained in Section 4.3(a) and this Section 4.4
shall not apply to statements or omissions in the Registration Statement or the
Prospectus based on information relating to the Company or any of the
Stockholders furnished to Acquiror by the Company or any of the Stockholders.
Neither the Acquiror Disclosure Schedule, this Agreement nor any Collateral
Document, data, information or statement furnished or to be furnished by or on
behalf of Acquiror pursuant to this Agreement or any Collateral Document
executed or required to be executed by or on behalf of Acquiror pursuant hereto
or thereto or to consummate the Merger and the Transactions, contains or will
contain any untrue statement of a material fact or omits or will omit to state a
material fact required to be stated herein or therein or necessary in order to
make the statements contained herein or therein not misleading and all such
Collateral Documents, data, information or statements are and will be true,
accurate and complete.

         Section 4.5. Brokers. No Person assisted in or brought about the
negotiation of this Agreement, the Merger or the subject matter of the
Transactions in the capacity of broker, agent or finder or in any similar
capacity on behalf of Acquiror or Acquiror Merger Subsidiary (other than William
Blair & Company, whose fees and expenses will be paid by Acquiror).


                                   ARTICLE 5.

                              ADDITIONAL COVENANTS

         Section 5.1. Access to Information; Confidentiality.

         (a) The Company shall afford to Acquiror and its Representatives full
access during normal business hours throughout the period prior to the Effective
Time to all of the Company's properties, books, contracts, commitments and
records (including without limitation Tax Returns) and, during such period,
shall furnish promptly upon request (i) to the extent not provi ded for pursuant
to the preceding clause, all financial records, ledgers, workpapers and other
sources of financial information possessed or controlled by the Company or its
accountants deemed by Acquiror or its Representatives necessary or useful for
the purpose of performing an audit of the Company and certifying financial
statements and financial information, and (ii) such other information concerning
any of the foregoing as Acquiror shall reasonably request. In addition, each
Party shall furnish promptly upon request a copy of each report, schedule and
other document filed or received by any of them pursuant to the requirements of
any Applicable Law (including without limitation federal or state securities
laws) or filed by it or any of its Subsidiaries with any Authority in connection
with the Transactions or which may have a material effect on their respective
businesses, operations, properties, prospects, personnel, condition, (financial
or other), or results of operations. The Company and Acquiror

                                      I-26
<PAGE>

acknowledge that they have heretofore executed a confidentiality agreement,
dated December 27, 1996 (the "Confidentiality Agreement"), which separately and
as incorporated herein shall remain in full force and effect after and
notwithstanding the execution and delivery of this Agreement, and that
information obtained from the Company by Acquiror or its Representatives or by
the Company or its Representatives from Acquiror, pursuant to Section 5.1(a),
the Confidentiality Agreement or otherwise, shall be subject to the provisions
of the Confidentiality Agreement.

         (b) Subject to the terms and conditions the Confidentiality Agreement,
Acquiror and the Company may disclose such information as may be necessary in
connection with seeking all Governmental and Private Authorizations or that is
required by Applicable Law to be disclosed. In the event that this Agreement is
terminated in accordance with its terms, Acquiror and the Company shall each
promptly redeliver all non-public written material provided pursuant to this
Section or any other provision of this Agreement or otherwise in connection with
the Merger and the Transactions and shall not retain any copies, extracts or
other reproductions in whole or in part of such written material other than one
copy thereof which shall be delivered to independent counsel for such party.

         (c) No investigation pursuant to this Section 5.1 shall affect any
representation or warranty in this Agreement of any Party hereto or any
condition to the obligations of the Parties hereto.

         Section 5.2.      Agreement to Cooperate.

         (a) Each of the Parties shall use its best efforts to take, or cause to
be taken, all actions and to do, or cause to be done, all things necessary,
proper or advisable under Applicable Law to consummate the Merger and make
effective the Transactions, including using its best efforts (i) to prepare and
file with the applicable Authorities as promptly as practicable after the
execution of this Agreement all requisite applications and amendments thereto,
together with related information, data and exhibits, necessary to request
issuance of orders approving the Merger and the Transactions by all such
applicable Authorities, each of which must be obtained or become final in order
to satisfy the condition applicable to it set forth in Section 6.1(d); (ii) to
obtain all necessary or appropriate waivers, consents and approvals, (iii) to
effect all necessary registrations, filings and submissions (including without
limitation filings under federal or state securities laws or the HSR Act and any
other submissions requested by the SEC, the Federal Trade Commission or the
Department of Justice) and (iv) to lift any injunction or other legal bar to the
Merger and the Transactions (and, in such case, to proceed with the Merger and
the Transactions as expeditiously as possible), subject, however, to the
requisite vote of the Stockholders. Each of the Parties recognizes that the
consummation of the Merger and the Transactions is subject to the preacquisition
notification requirements of the HSR Act. Each agrees that, to the extent
required by Applicable Law to consummate the Merger, it will file with the
Antitrust Division of the Department of Justice and the Federal Trade Commission
a Notification and Report Form in a manner so as to constitute substantial
compliance with the notification requirements of HSR. Each covenants and agrees
to use its best efforts to achieve the prompt termination or expiration of any
waiting period or any extension thereof under the HSR Act. Notwithstanding
anything to the contrary contained in this Agreement, in connection with or as a
condition to receiving the consent or approval of any Authority or otherwise,

                                      I-27
<PAGE>

Acquiror shall not be required to divest, abandon, license or take similar
action with respect to any assets (tangible or intangible) of it or any of its
Subsidiaries (including, without limitation, the Surviving Corporation after
consummation of the Merger).

         (b) Each of the Parties agrees to take such actions as may be necessary
to obtain any Governmental Authorizations legally required for the consummation
of the Merger and the Transactions, including the making of any Governmental
Filings, publications and requests for extensions and waivers.

         (c) The Company will use its best efforts on or prior to the Closing
Date to obtain the satisfaction of the conditions specified in Sections 6.1 and
6.2. Each of Acquiror and Acquiror Merger Subsidiary will use its best efforts
on or prior to the Closing Date to obtain the satisfaction of the conditions
applicable to it specified in Sections 6.1 and 6.3.

         (d) The Company shall take such steps as are necessary and appropriate
to obtain, and shall promptly obtain, satisfaction and discharge of all Liens
set forth in Section 3.5(a) of the Disclosure Schedule in favor of Fleet Bank of
Massachusetts, N.A., but only to the extent that Acquiror elects to repay or
prepay the Indebtedness corresponding to such Liens from its own funds.

         (e) The parties shall cooperate with one another in the preparation,
execution and filing of all Returns, questionnaires, applications, or other
documents regarding any real property transfer or gains, sales, use, transfer,
value added, stock transfer and stamp Taxes or any Plan, Benefit Arrangement or
Employment Arrangement, any transfer, recording, registration and other fees,
and any similar Taxes which become payable in connection with the Transactions
that are required or permitted to be filed on or before the Effective Time.

         (f) The Company shall cause its independent accountants to cooperate
with Acquiror and shall prepare audited financial statements for the Company for
inclusion in the Registration Statement. Without limiting the generality of the
foregoing, the Company agrees that it will (i) consent to the use of such
audited financial statements in any registration statement or other document
filed by Acquiror (or any of its Subsidiaries) under the Securities Act or the
Exchange Act, and (ii) execute and deliver, and cause its officers to execute
and deliver, such "representation" letters as are customarily delivered in
connection with audits and as Acquiror's independent accountants may reasonably
request under the circumstances.

         (g) Without intending to limit the generality of the covenants set
forth in Section 3.17, the Company agrees that it shall not without the prior
written consent of Acquiror, which consent shall not unreasonably be withheld or
delayed, (i) enter into, agree to or otherwise become bound by any new leases of
real property or amend or exercise any option to extend any existing lease of
real property or (ii) hire any new employee whose annual compensation exceeds
$50,000. In addition, the Company shall confer on a regular and frequent basis
with Acquiror with respect to operational matters of the Company.

         Section 5.3. Affiliate Agreements; Registration Rights Agreement.


                                      I-28
<PAGE>

         (a) Prior to the Closing Date, the Company shall deliver to Acquiror a
letter identifying all Persons who are, at the time this Agreement is submitted
to the Stockholders, "affiliates" of the Company for purposes of Rule 145 under
the Securities Act. Each of Acquiror and the Company shall use its best efforts
to cause each such "affiliate", or each Person who will, upon consummation of
the Merger and the Transactions become, an "affiliate" of Acquiror, to deliver
to Acquiror on or prior to the Closing Date a written agreement (an "Affiliate
Agreement") substantially in the form attached hereto as Exhibit 5.3.

         (b) Acquiror agrees that it will enter into a registration rights
agreement (the "Registration Rights Agreement") with the Principal Stockholders
and such other stockholders of Acquiror as Acquiror deems necessary or
appropriate, with respect to shares of Acquiror Stock to be issued to the
Principal Stockholders pursuant to Section 2.1(a) hereof (and any shares of such
other stockholders), for the benefit of the Principal Stockholders reasonably
satisfactory in form and substance to Acquiror and the Principal Stockholders,
which Registration Rights Agreement shall include, without limitation, the
following terms: (i) the Principal Stockholders shall have demand registration
rights upon the written request of the Principal Stockholders, or upon the
written request by either of them, requesting the registration of shares of
Acquiror Stock having a market price of an aggregate of at least $10,000,000 on
no more than two occasions (subject to customary proration or "cut-back"
provisions); (ii) the Principal Stockholders shall have an unlimited number of
piggyback registration rights in conjunction with public offerings of Acquiror
Stock (other than any such offerings in connection with acquisitions and subject
to customary proration or "cut-back" provisions); (iii) Acquiror and the
Principal Stockholders shall indemnify each other in the event of any losses
resulting from any misrepresentations, acts or omissions of the other party in
connection with any such registration or any document related thereto; (iv)
Acquiror shall have the right, in its discretion, subject to the consent of the
Principal Stockholders, which consent shall not be unreasonably withheld, to
choose the underwriter(s) in any underwritten public offering of Acquiror Stock;
(v) each Principal Stockholder will agree to customary lock-up provisions in
connection with any registration; and (vi) the Principal Stockholders shall be
solely responsible for all of their own expenses (including, without limitation,
underwriting discounts and selling commissions and the fees of their counsel)
and all registration filing fees of Acquiror in connection with any registration
and, with respect to demand registration only, shall reimburse Acquiror for all
reasonable out-of-pocket expenses incurred in satisfying any such demand
registration, including, without limitation, fees and expenses of complying with
securities and blue sky laws, printing expenses, fees and expenses of Acquiror's
counsel and accountants.

         Section 5.4. No Solicitation. The Company shall not, nor shall it
permit any of the Company's Representatives (including, without limitation, any
investment banker, attorney or accountant retained by it) to, initiate, solicit
or facilitate, directly or indirectly, any inquiries or the making of any
proposal with respect to an Other Transaction, engage in any discussions or
negotiations concerning, or provide to any other person any information or data
relating to, it for the purposes of, or otherwise cooperate in any way with or
assist or participate in, or facilitate any inquiries or the making of any
proposal which constitutes, or may reasonably be expected to lead to, a proposal
to seek or effect an Other Transaction, or agree to or endorse any Other
Transaction; provided, however, that nothing contained in this Section shall
prohibit the Company or its Board of Directors from making any disclosure to
Stockholders that, in the reasonable judgment of its Board of Directors in
accordance with, and based upon the written

                                      I-29
<PAGE>

advice of, outside counsel, is required under Applicable Law. The Company shall
promptly advise Acquiror of, and communicate the material terms of, any proposal
it may receive, or any inquiries it receives which may reasonably be expected to
lead to such a proposal relating to an Other Transaction, and the identity of
the Person making it. The Company shall further advise Acquiror of the status
and changes in the material terms of any such proposal or inquiry (or any
amendment to any of them). During the term of this Agreement, the Company shall
not enter into any agreement oral or written, and whether or not legally
binding, with any Person that provides for, or in any way facilitates, an Other
Transaction, or affects any other obligation of the Company under this
Agreement.

         Section 5.5. Directors' and Officers' Indemnification and Insurance.
From and after the Effective Time, the Surviving Corporation shall indemnify,
defend and hold harmless the present and former officers and directors of the
Company against all Claims or amounts that, with the approval of the Surviving
Corporation as to settlements only, are paid in settlement of or otherwise in
connection with any Claim based in whole or in part on the fact that such Person
is or was a director or officer of the Company and arising out of actions or
omissions occurring at or prior to the Effective Time (including, without
limitation, the Merger and the Transactions), in each case to the fullest extent
currently provided under the Company's Organic Documents (but only to the extent
permitted under the DGCL), and shall pay any expenses in advance of the final
disposition of any such action or proceeding to each such Person to the fullest
extent permitted under the DGCL, upon receipt from the Person to whom expenses
are advanced of an undertaking to repay such advances to the extent required
under the DGCL. Acquiror hereby guarantees the performance by the Surviving
Corporation of all of its obligations in this Section 5.5 and the payment of all
sums which would be due hereunder from the Surviving Corporation.

         Section 5.6. Notification of Certain Matters. Each party shall give
prompt notice to the other of the occurrence or non-occurrence of any Event the
occurrence or non-occurrence of which would be likely to cause in any material
respect (i) any representation or warranty made by it contained in this
Agreement to be untrue or inaccurate, or (ii) any change to be made in the
Disclosure Schedule or the Acquiror Disclosure Schedule, as the case may be, or
(iii) any failure of the Company or Acquiror, as the case may be, to comply with
or satisfy, or be able to comply with or satisfy, any material covenant,
condition or agreement to be complied with or satisfied by it hereunder;
provided, however, that the delivery of any notice pursuant to this Section 5.6
shall not limit or otherwise affect the remedies available hereunder to the
Party receiving such notice.

         Section 5.7. Public Announcements. Until the Closing, or in the event
of termination of this Agreement, each party shall consult with the other before
issuing any press release or otherwise making any public statements with respect
to this Agreement, the Merger or any Transaction and shall not issue any such
press release or make any such public statement without the prior consent of the
other, which consent shall not be unreasonably withheld or delayed.
Notwithstanding the foregoing, the Company acknowledges and agrees that Acquiror
may, without the prior consent of the Company, issue such press releases or make
such public statements as may be required by Applicable Law, in which case, to
the extent practicable, Acquiror will consult with, and exercise in good faith,
all reasonable business efforts to agree

                                      I-30
<PAGE>

with the Company regarding the nature, extent and form of such press release or
public statement, and, in any event, with prior notice to the Company.

         Section 5.8. Obligations of Acquiror. Acquiror agrees to take all
action necessary to cause Acquiror Merger Subsidiary and the Surviving
Corporation to perform their respective obligations under this Agreement.
Acquiror shall be liable as provided herein for any breach of any
representation, warranty, covenant or agreement of Acquiror Merger Subsidiary
and for any breach of this covenant.

         Section 5.9. Employee Benefits; Severance Policy. Provided that it
complies in all material respects with Applicable Law, the Surviving Corporation
may, in its sole discretion, substitute employee compensation, benefit and
severance programs for those of the Company as are comparable with the programs
provided from time to time to Acquiror's employees and the employees of
Acquiror's Subsidiaries.

         Section 5.10. Certain Actions Concerning Business Combinations. The
Company will not apply, and will not take any action resulting in the
application of, or otherwise elect to apply, the provisions of applicable state
takeover laws, if any, with respect to or as a result of the Merger or the
Transactions.

         Section 5.11. Conversion of Option Securities. The Company will take
all action necessary (a) to provide timely written notice to all persons holding
Option Securities to the effect that all Option Securities outstanding as of the
Effective Time will be exchanged for options to acquire Acquiror Stock, and
cash, in the case of vested and exercisable Option Securities, upon such
exchange, in accordance with Section 2.4 hereof, and (b) to obtain any consent
or waiver from the holder of an Option Security which may be necessary to give
effect to actions contemplated by Section 2.4. Without the prior written consent
of Acquiror, except as set forth in Section 3.13(b) of the Disclosure Schedule,
(i) such notice will not cause an acceleration of the exercise, conversion or
vesting schedule of any Option Security, and (ii) the Company will not otherwise
accelerate, or cause an acceleration of, the exercise, exchange or vesting
schedule of any Option Security.

         Section 5.12. Tax Treatment. Each of Acquiror, Acquiror Merger
Subsidiary and the Company shall use its reasonable best efforts to cause the
Merger (including, if applicable, the Alternative Transaction) to qualify as a
tax-free reorganization under the provisions of Section 368(a) of the Code and
to obtain the opinions of counsel referred to in Sections 6.2(j) and 6.3(d).
Without limiting the foregoing, Acquiror covenants that it will not dispose of
the Company, whether by sale of stock, sale of assets, merger, consolidation,
liquidation, redemption, or otherwise, for a period of one year after the
Closing Date, except as permitted under Section 368(a)(2)(C) of the Code and the
administrative authorities under Section 368 of the Code, or unless it first
shall have received an opinion of counsel, addressed to Acquiror and the
Stockholders, that the proposed disposition will not affect the tax-free nature
of the Merger.

         Section 5.13. Preparation of the Registration Statement.

         (a) Promptly following the date of this Agreement, Acquiror shall
prepare and file with the SEC the Registration Statement. Each of the Company
and Acquiror shall use its

                                      I-31
<PAGE>

reasonable best efforts to have the Registration Statement declared effective
under the Securities Act as promptly as practicable after such filing. The
Company shall use its reasonable best efforts to cause the Prospectus to be
mailed to the Stockholders as promptly as practicable after the Registration
Statement is declared effective under the Securities Act. Acquiror shall also
take any action (other than qualifying to do business in any jurisdiction in
which it is not now so qualified or consenting to service of process in any
jurisdiction in which it has not previously so consented in any action other
than one arising out of the offering of the Acquiror Stock in such jurisdiction)
required to be taken to qualify the Acquiror Stock to be issued in the Merger
under any applicable state securities or "blue sky" laws prior to the Effective
Time, and the Company shall furnish all information concerning the Company and
the holders of the Company Stock as may be requested in connection with any such
action.

         (b) The Company and Acquiror shall cooperate with each other and
provide to each other all information necessary in order to prepare the
Registration Statement. Acquiror shall notify the Company promptly of the
receipt of any comments from the SEC or its staff and of any requests by the SEC
or its staff for amendments or supplements to the Registration Statement or for
additional information and shall supply the Company with copies of all
correspondence between Acquiror or any of its Representatives, on the one hand,
and the SEC or its staff, on the other hand, with respect thereto. The Company
and Acquiror shall use their respective reasonable best efforts to respond to
any comments of the SEC with respect to the Registration Statement as promptly
as practicable. If at any time prior to the Effective Time there shall occur any
event with respect to the Company or Acquiror or any of its Subsidiaries, as the
case may be, or with respect to other information supplied by the Company or
Acquiror, as the case may be, for inclusion in the Registration Statement, in
either case which event is required to be described in an amendment of, or a
supplement to, the Prospectus or the Registration Statement, such event shall be
so described, and such amendment or supplement shall be promptly filed with the
SEC and, as required by law, disseminated to the Stockholders. Acquiror shall
notify the Company promptly upon (i) the declaration by the SEC of the
effectiveness of the Registration Statement, (ii) the issuance or threatened
issuance of any stop order or other order preventing or suspending the use of
any prospectus relating to the Registration Statement, (iii) any suspension or
threatened suspension of the use of any prospectus relating to the Registration
Statement in any state, (iv) any proceedings commenced or threatened to be
commenced by the SEC or any state securities commission that might result in the
issuance of a stop order or other order or suspension of use or (v) any request
by the SEC to supplement or amend the Prospectus after the effectiveness
thereof. Acquiror and, to the extent applicable, the Company, shall use their
reasonable best efforts to prevent or promptly remove any stop order or other
order preventing or suspending the use of any prospectus relating to the
Registration Statement and to comply with any such request by the SEC or any
state securities commission to amend or supplement the Registration Statement or
the Prospectus.

         (c) None of the information supplied or to be supplied by the Company
or any Stockholder for inclusion in (i) the Registration Statement will, at the
time the Registration Statement is filed with the SEC, at any time it is amended
or supplemented or at the time it becomes effective under the Securities Act,
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein
not misleading, or (ii) the Prospectus or any other proxy statement or
information furnished to Stockholders in connection with the Special Meeting
will, at the date it is first

                                      I-32
<PAGE>

mailed to the Stockholders or at the time of the Special Meeting, contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary in order to make the statements therein, in
light of the circumstances under which they are made, not misleading. The
Prospectus and the Registration Statement will comply as to form in all material
respects with the requirements of the Securities Act. Notwithstanding the
foregoing, no representation is made by the Company with respect to statements
made or incorporated by reference in the Registration Statement other than with
respect to information which is supplied by the Company or any Stockholder
specifically for inclusion or incorporation by reference in the Registration
Statement.


                                   ARTICLE 6.

                               CLOSING CONDITIONS

         Section 6.1. Conditions to Obligations of Each Party to Effect the
Merger. The respective obligations of each Party to effect the Merger shall be
subject to the satisfaction at or prior to the Effective Time of the following
conditions, any or all of which may be waived, in whole or in part, to the
extent permitted by Applicable Law:

         (a) This Agreement, the Merger and the Transactions shall have been
approved and adopted in accordance with the DGCL by the affirmative vote, or to
the extent permitted by Applicable Law, by written consent, of the Stockholders
holding at least the minimum number of shares of the Company Stock then issued
and outstanding as are required by Applicable Law and the Company's Organic
Documents for such approval and adoption;

         (b) As of the Closing Date, no Legal Action shall be pending before or
threatened in writing by any Authority seeking to restrain, prohibit, make
illegal or delay materially, or seeking material damages from the Party seeking
to invoke this Section 6.1(b) and, in case Acquiror is seeking to invoke this
Section 6.1(b), the Company, or to impose any Adverse conditions in connection
with, the consummation of the Merger and the Transactions, or which might, in
the reasonable business judgment of Acquiror, have an Adverse Effect on Acquiror
and its Subsidiaries taken as a whole assuming consummation of the Merger;

         (c) Other than the filing of the certificate of merger in accordance
with the DGCL, all authorizations, consents, waivers, orders or approvals
required to be obtained, and all filings, submissions, registrations, notices or
declarations required to be made, by Acquiror or Acquiror Merger Subsidiary and
the Company prior to the consummation of the Merger and the Transactions shall
have been obtained from, and made with, all required Authorities, except for
such authorizations, consents, waivers, orders, approvals, filings,
registrations, notices or declarations the failure to obtain or make would not,
in the reasonable judgment of Acquiror, assuming consummation of the Merger,
have an Adverse Effect on the Company;

         (d) The filing and waiting period requirements under the HSR Act
relating to the consummation of the Merger shall have been complied with; and


                                      I-33
<PAGE>

         (e) Acquiror or its nominee and the owner of each Property shall have
entered into and closed a purchase and sale agreement for each such Property for
the price of $2,200,000 for the Property located at 5 Fortune Drive, Billerica,
Massachusetts, $2,400,000 for the Property located at 96 High Street, N.
Billerica, Massachusetts, and $2,700,000 for the Property located at 520 Metro
Park West, Rochester, New York; provided, however, that it shall not be a
condition to the Company's obligation to effect the Merger if the reason for
Acquiror's or such nominee's failure to acquire a Property is due to the
inability of the owner of such Property to convey to Acquiror or such nominee
good and marketable title to the Property free and clear of all Liens other than
Permitted Liens.

         Section 6.2. Conditions to Obligations of Acquiror and Acquiror Merger
Subsidiary. The obligations of Acquiror and Acquiror Merger Subsidiary to effect
the Merger shall be subject to the satisfaction at or prior to the Effective
Time of the following conditions, any or all of which may be waived, in whole or
in part, to the extent permitted by Applicable Law:

         (a) All agreements, certificates, opinions and other documents shall be
reasonably satisfactory in form, scope and substance to Acquiror and its
counsel, and Acquiror and its counsel shall have received all information and
copies of all documents, including records of corporate proceedings, which they
may reasonably request in connection therewith, such documents where appropriate
to be certified by proper corporate officers;

         (b) The representations, warranties, covenants and agreements of the
Company contained in this Agreement or otherwise made in writing by it or on its
behalf pursuant hereto or otherwise made in connection with the Merger and the
Transactions shall be true and correct in all material respects at and as of the
Closing Date with the same force and effect as though made on and as of such
date except those which speak as of a certain date which shall continue to be
true and correct as of such date on the Closing Date; each and all of the
agreements and conditions to be performed or satisfied by the Company or any
Stockholders hereunder or under the Stockholders' Agreement at or prior to the
Closing Date shall have been duly performed or satisfied in all material
respects; and the Company shall have furnished Acquiror with such certificates
and other documents evidencing the truth of such representations, warranties,
covenants and agreements and the performance of such agreements or conditions as
Acquiror shall have reasonably requested;

         (c) The Company shall have furnished Acquiror and, at Acquiror's
request, any bank or other financial institution providing credit to Acquiror,
with favorable opinions dated the Closing Date of Woods, Oviatt, Gilman, Sturman
& Clarke, LLP, counsel for the Company, in the form attached hereto as Exhibit
6.2(c);

         (d) No Legal Action or other Claim shall be pending or threatened at
any time prior to or on the Closing Date before or by any Authority or by any
other Person seeking to restrain or prohibit, or damages or other relief in
connection with, the execution and delivery of this Agreement or the
consummation of the Merger and the Transactions or which might in the reasonable
judgment of Acquiror have any Adverse Effect on the Company or, assuming
consummation of the Merger, Acquiror and its Subsidiaries taken as a whole;


                                      I-34
<PAGE>

         (e) Each Affiliate of the Company shall have executed and delivered an
Affiliate Agreement in the form of Exhibit 5.3 hereto and Acquiror and the
Principal Stockholders shall have entered into the Registration Rights
Agreement;

         (f) The Company shall have obtained consents to the assignment and
continuation of all Material Agreements which, in the reasonable judgment of
Acquiror require such consents, and the Company shall have obtained satisfaction
and discharge of all Liens set forth in Section 3.5(a) of the Disclosure
Schedule in favor of Fleet Bank of Massachusetts, N.A., but only to the extent
that Acquiror elects to repay or prepay the Indebtedness corresponding to such
Liens from its own funds;

         (g) As of the Closing Date, there shall not have occurred and be
continuing any Adverse Change affecting the Company from the condition thereof
(financial and other) reflected in the Financial Statements;

         (h) Each of the officers and directors of the Company and each trustee
under each Plan shall have submitted his or her unqualified written resignation,
dated as of the Closing Date, from all such positions held with the Company and
as a trustee for each such Plan;

         (i) Except for such Contractual Obligations as to which Acquiror has
notified the Company that it wants to retain, which notice shall be delivered
not less than twenty (20) days prior to Closing and which Contractual
Obligations shall be effective as of the Effective Time, all Contractual
Obligations set forth in Section 3.9 of the Disclosure Schedule shall have been
satisfied and discharged as of the Closing Date;

         (j) Acquiror shall have received a favorable opinion, dated the Closing
Date, of Sullivan & Worcester LLP, its special tax counsel, to the effect that
this Agreement constitutes a tax-free plan of reorganization in accordance with
the provisions of Section 368(a) of the Code and as to the consequences thereof
to Acquiror; and

         (k) Acquiror, the Company, the Agent and the Escrow Agent shall have
executed and delivered the Escrow Agreement and the Escrow Indemnity Funds
described therein shall have been delivered to the Escrow Agent.

         Section 6.3. Conditions to Obligations of the Company. The obligations
of the Company to effect the Merger shall be subject to the satisfaction at or
prior to the Effective Time of the following conditions, any or all of which may
be waived, in whole or in part to the extent permitted by Applicable Law:

         (a) Acquiror shall have furnished the Company and the Principal
Stockholders with the favorable opinion, dated the Closing Date, of Sullivan &
Worcester LLP, counsel to Acquiror, in the form attached hereto as Exhibit
6.3(a);

         (b) All agreements, certificates, opinions and other documents shall be
reasonably satisfactory in form, scope and substance to the Company and its
counsel, and the Company and its counsel shall have received all information and
copies of all documents, including records

                                      I-35
<PAGE>

of corporate proceedings, which they may reasonably request in connection
therewith, such documents where appropriate to be certified by proper corporate
officers;

         (c) The representations, warranties, covenants and agreements of each
of Acquiror and Acquiror Merger Subsidiary contained in this Agreement or
otherwise made in writing by it or on its behalf pursuant hereto or otherwise
made in connection with the Transactions shall be true and correct in all
material respects at and as of the Closing Date with the same force and effect
as though made on and as of such date except those which speak as of a certain
date which shall continue to be true and correct as of such date on the Closing
Date; each and all of the agreements and conditions to be performed or satisfied
by each of Acquiror and Acquiror Merger Subsidiary hereunder at or prior to the
Closing Date shall have been duly performed or satisfied in all material
respects; and each of Acquiror and Acquiror Merger Subsidiary shall have
furnished the Company with such certificates and other documents evidencing the
truth of such representations, warranties, covenants and agreements and the
performance of such agreements or conditions as the Company shall have
requested; and

         (d) The Company shall have received a favorable opinion, dated the
Closing Date, of Woods, Oviatt, Gilman, Sturman & Clarke, LLP, its special tax
counsel, to the effect that this Agreement constitutes a tax-free plan of
reorganization in accordance with the provisions of Section 368(a) of the Code
and as to the consequences thereof to the Stockholders;

         (e) Affiliates of the Company who are guarantors of any Company bank
Indebtedness, leases or other obligations shall have been released from all
liability under the guarantees listed on Section 6.3(e) of the Disclosure
Schedule and all collateral granted by them to secure those guarantees shall
have been released and returned to them (it being understood that if any Person
who is benefited by any guaranty does not agree to release such guaranty or
collateral without the receipt of consideration, the condition to Closing shall
be deemed to be satisfied if, at Acquiror's option, Acquiror indemnifies such
Affiliate for any payment made in respect of such guaranty); and

         (f) The Escrow Agreement shall have been executed and delivered by
Acquiror and the escrow agent and the Registration Rights Agreement shall have
been executed and delivered by Acquiror and such other parties thereto (other
than the Principal Stockholders).

                                   ARTICLE 7.

                        TERMINATION, AMENDMENT AND WAIVER

         Section 7.1. Termination. This Agreement may be terminated at any time
prior to the Effective Time, whether before or after approval of this Agreement,
the Merger and the Transactions by the Stockholders:

         (a) by mutual consent of Acquiror and the Company;

         (b) by either Acquiror or the Company if any permanent injunction,
decree or judgment by any Authority preventing the consummation of the Merger
shall have become final and nonappealable;

                                      I-36
<PAGE>


         (c) by the Company in the event (i) the Company is not in breach of
this Agreement and none of its representations and warranties shall have become
and continue to be untrue in any material respect, unless such breach or untruth
is capable of being cured by and will not prevent or delay consummation of the
Merger by or beyond the Termination Date, and (ii) either (A) Acquiror or
Acquiror Merger Subsidiary is in breach of this Agreement or any of its
representations or warranties shall have become and continue to be untrue in any
material respect, unless, in either case such breach or untruth is capable of
being cured by and will not prevent or delay consummation of the Merger by or
beyond the Termination Date, or (B) the Merger and the Transaction have not been
consummated by the Termination Date;


         (d)      by Acquiror:

                  (i) if the Merger and the Transactions fail to receive the
         approval required by Applicable Law, by vote (or to the extent
         permitted by Applicable Law, by consent) of the Stockholders;

                  (ii) in the event (A) neither Acquiror nor Acquiror Merger
         Subsidiary is in breach of this Agreement and none of their
         representations or warranties shall have become and continue to be
         untrue in any material respect, unless such breach or untruth is
         capable of being cured by and will not prevent or delay consummation of
         the Merger by or beyond the Termination Date, and (B) either (I) the
         Company is in breach of this Agreement or any of its representations or
         warranties shall have become and continue to be untrue in any material
         respect, unless, in either case, such breach or untruth is capable of
         being cured by and will not prevent or delay consummation of the Merger
         by or beyond the Termination Date, (II) the Merger and the Transactions
         have not been consummated prior to the Termination Date, or (III) any
         of the Stockholders is in breach of the Stockholders' Agreement or any
         of their representations or warranties shall have become and continue
         to be untrue in any material respect, unless, in either case, such
         breach or untruth is capable of being cured by and will not prevent or
         delay consummation of the Merger by or beyond the Termination Date; or

                  (iii) if (A) the Board of Directors of the Company shall (I)
         withdraw, modify or change its recommendation so that it is not in
         favor of this Agreement, the Merger or the Transactions, or shall have
         resolved to do any of the foregoing, or (II) have recommended or
         resolved to recommend to the Stockholders any Other Transaction, or (B)
         the Company shall have entered into or agreed to enter into any Other
         Transaction.

         Section 7.2. Effect of Termination. Except as provided in Sections 5.1,
5.7, 7.2, 7.5 and 9.11 in the event of the termination of this Agreement
pursuant to Section 7.1, this Agreement shall forthwith become void, there shall
be no liability on the part of any Party, or any of their respective officers or
directors, to the other and all rights and obligations of any Party shall cease;
provided, however, that such termination shall not relieve any Party from
liability for the breach of any of its representations, warranties, covenants or
agreements set forth in this Agreement, or impair the right of the Company, on
the one hand, and Acquiror and

                                      I-37
<PAGE>

Acquiror Merger Subsidiary, on the other hand, to compel specific performance of
the other party of its or their obligations under this Agreement.

         Section 7.3. Amendment. This Agreement may be amended by the Parties by
action taken by or on behalf of the respective Boards of Directors thereof at
any time prior to the Effective Time; provided, however, that, after approval of
this Agreement and the Merger by the Stockholders, no amendment, which under
Applicable Law may not be made without the approval of the Stockholders, may be
made without such approval. This Agreement may not be amended except by an
instrument in writing signed by the Parties hereto.

         Section 7.4. Waiver. At any time prior to the Effective Time, except to
the extent Applicable Law does not permit, either Acquiror and Acquiror Merger
Subsidiary or the Company may extend the time for the performance of any of the
obligations or other acts of the other, subject, however, to the terms and
conditions of Section 7.1, waive any inaccuracies in the representations and
warranties of the other contained herein or in any document delivered pursuant
hereto and waive compliance by the other with any of the agreements, covenants
or conditions contained herein. Any such extension or waiver shall be valid only
if set forth in an agreement in writing signed by the Party or Parties to be
bound thereby.

         Section 7.5. Fees, Expenses and Other Payments.

         (a) All costs and expenses incurred in connection with this Agreement,
the Merger and the Transactions, and compliance with Applicable Law and
Contractual Obligations as a consequence hereof and thereof, including, without
limitation, fees and disbursements of counsel, financial advisors and
accountants, incurred by the Parties shall be borne solely and entirely by the
Party which has incurred such costs and expenses (with respect to such Party,
its "Expenses").

         (b) The Company agrees that if this Agreement shall be terminated by
Acquiror pursuant to Section 7.1(d) (other than a termination by Acquiror
pursuant to Section 7.1(d)(ii)(B)(II) unless the reason for the failure to
consummate the Merger prior to the Termination Date is due to any breach by the
Company of its covenants herein or the failure of the representations and
warranties of the Company to be true and correct in all material respects), then
the Company will pay to Acquiror an amount equal to $5,000,000, which amount is
in recognition of, among other things, the out-of-pocket Expenses of Acquiror
related to this Agreement, the reliance of Acquiror on the Company's fulfillment
of its obligations hereunder, the costs in delayed opportunity to Acquiror, and
the benefit to the Company, which heretofore has been a private closely-held
business, in establishing a market price for it, but which amount shall not be
considered to constitute liquidated damages. Any payment required to be made
pursuant to this Section 7.5(b) shall be made as promptly as practicable but not
later than ten business days after termination of this Agreement and, in any
such case, shall be made by wire transfer of immediately available funds to an
account designated by Acquiror.

         (c) Acquiror agrees that if this Agreement shall be terminated by the
Company pursuant to Section 7.1(c) (other than a termination by the Company
pursuant to Section 7.1(c)(ii)(B) unless the reason for the failure to
consummate the Merger prior to the Termination Date is due to any breach by
Acquiror or Acquiror Merger Subsidiary of any of their respective

                                      I-38
<PAGE>

covenants herein or the failure of the representations and warranties of
Acquiror and Acquiror Merger Subsidiary to be true and correct in all material
respects), then Acquiror will pay to the Company an amount equal to $5,000,000,
which amount is in recognition of, among other things, the out-of-pocket
Expenses of the Company related to this Agreement, the reliance of the Company
on Acquiror's fulfillment of its obligations hereunder, the costs in delayed
opportunity to the Company, but which amount shall not be considered to
constitute liquidated damages. Any payment required to be made pursuant to this
Section 7.5(c) shall be made as promptly as practicable but not later than ten
business days after termination of this Agreement and, in any such case, shall
be made by wire transfer of immediately available funds to an account designated
by the Company.

         Section 7.6. Effect of Investigation. The right of any Party to
terminate this Agreement pursuant to Section 7.1 shall remain operative and in
full force and effect regardless of any investigation made by or on behalf of
any Party, or any Person controlling any such party or any of their respective
Representatives whether prior to or after the execution of this Agreement.


                                   ARTICLE 8.

                           INDEMNIFICATION; ADJUSTMENT

         Section 8.1. Survival. The representations, warranties, covenants and
agreements of the Company contained in or made pursuant to this Agreement or any
Collateral Document shall survive the Closing and shall remain operative and in
full force and effect for a period of one (1) year after the Closing Date (the
"Escrow Indemnity Period"), regardless of any investigation or statement as to
the results thereof made by or on behalf of any Party. No claim for
indemnification may be asserted after the expiration of the Escrow Indemnity
Period. Notwithstanding anything herein to the contrary, any representation,
warranty, covenant and agreement which is the subject of a Claim which is
asserted in writing prior to the expiration of the Escrow Indemnity Period shall
survive with respect to such Claim or any dispute with respect thereto until the
final resolution thereof.

         Section 8.2. Escrow; Indemnification. The Parties hereto agree, and by
adopting and approving this Agreement and the Merger, the Stockholders shall
agree, that $3,000,000 in cash (the "Escrow Indemnity Funds") will be withheld
from the Exchange Merger Consideration and from the cash, if any, issued with
respect to Exercisable Options pursuant to Section 2.4 and held in escrow in
accordance with the terms of this Article 8 and the Escrow Agreement in order to
provide a fund to indemnify Acquiror and hold Acquiror harmless from and against
any and all damages, claims, losses, expenses, costs, obligations and
liabilities, including without limitation liabilities for all reasonable
attorneys', accountants', and experts' fees and expenses including those
incurred to enforce the terms of this Agreement or any Collateral Document
(collectively, "Loss and Expense"), suffered, directly or indirectly, by
Acquiror by reason of, or arising out of:

         (a) any breach of representation or warranty made by the Company
pursuant to this Agreement or any Collateral Document or any failure by the
Company to perform or fulfill any of its covenants or agreements set forth in
this Agreement or any Collateral Document;

                                      I-39
<PAGE>


         (b) any Legal Action or other Claim by any third party relating to the
Company to the extent such Legal Action or other Claim has resulted in a breach
of representation or warranty by the Company pursuant to this Agreement or any
Collateral Document; or

         (c) the Indebtedness of the Company and its Subsidiaries as of the
Effective Time exceeding $500,000 (unless any adjustment has been made to the
Cash Amount in accordance with Section 8.6).

         The Company hereby appoints, and by adopting and approving this
Agreement and the Merger, the Stockholders shall appoint, B. Thomas Golisano
(the "Agent", with full and unqualified power to delegate to one or more persons
the authority granted to him hereunder) to act as his, her or its agent and
attorney-in-fact, with full power of substitution, to take all actions called
for by this Article 8 and the Escrow Agreement on his, her or its behalf, in
accordance with the terms of this Article 8 and the Escrow Agreement.

         Section 8.3. Limitation of Liability; Disposition of Escrow Indemnity
Funds.

         (a) Notwithstanding the provisions of Section 8.2, after the Closing,
Acquiror's rights to indemnification shall be subject to the following
limitations: (i) Acquiror shall be entitled to recover its Loss and Expense in
respect of any Claim only if the Loss and Expense for all Claims exceeds, in the
aggregate, $150,000 and (ii) in no event shall the aggregate amount to be paid
to Acquiror exceed the Escrow Indemnity Funds.

         (b) Anything in this Agreement, including without limitation the
provisions of Sections 8.2 or 8.3(a), to the contrary notwithstanding, the
exclusive recourse of Acquiror with respect to Claims brought after the
Effective Time arising out of the transactions contemplated by this Agreement
shall be the Escrow Indemnity Funds. On or before the Closing Date, Acquiror,
the Company and the Agent shall execute and deliver an escrow agreement
substantially in the form attached hereto as Exhibit 8.3 (the "Escrow
Agreement"). Any Claims of Acquiror for indemnification to be satisfied out of
the Escrow Indemnity Funds shall be made in accordance with the terms of the
Escrow Agreement.

         (c) In the event there are no Unresolved Claims (as defined in the
Escrow Agreement), on the date which is ten (10) days after the expiration of
the Escrow Indemnity Period, or the next business day if such date is not a
business day, the Escrow Indemnity Funds then remaining shall be distributed to
the Stockholders (or their nominee or transferee, as set forth in the
Transmittal Documents in respect of the Exchange Merger Consideration) entitled
thereto in accordance with the proportions with their ownership of Shares
immediately prior to the Effective Time. In the event one or more Unresolved
Claims with respect to the Escrow Indemnity Funds, if any, shall exist upon the
expiration of the Escrow Indemnity Period, cash in the amount equal to the sum
of (i) the aggregate amount of such Unresolved Claims and (ii) the amount
reasonably estimated by Acquiror to cover the fees, expense and other costs
(including reasonable counsel fees and expenses) which will be required to
resolve such Unresolved Claims shall be retained as part of the Escrow Indemnity
Funds and the balance thereof, if any, shall be distributed to the Persons
entitled thereto. Upon the resolution of all such Claims and the payment of all
such fees, expenses and costs out of the Escrow Indemnity Funds, the balance of
the cash, if any, shall be distributed to the Persons entitled thereto. Upon the
resolution of all

                                      I-40
<PAGE>

such Claims and the payment of all such fees, expenses and cost out of the
Escrow Idemnity Funds, the balance of the cash, if any shall be distributed to
the Persons entitled thereto.


         Section 8.4. Notice of Claims. If Acquiror believes that it has
suffered or incurred any Loss and Expense, it shall notify the Agent promptly in
writing, and in any event within the applicable time period specified in Section
8.2, describing such Loss and Expense, all with reasonable particularity and
containing a reference to the provisions of this Agreement in respect of which
such Loss and Expense shall have occurred. If any Legal Action is instituted by
a third party with respect to which Acquiror intends to claim any liability or
expense as Loss and Expense under this Article, Acquiror shall promptly notify
the Agent of such Legal Action, but the failure to so notify the Agent shall not
relieve the Stockholders of their obligations under this Article, except to the
extent such failure to notify prejudices its ability to defend against such
Claim.

         Section 8.5. Defense of Third Party Claims. The Agent shall have the
right to conduct and control, through counsel of his own choosing, reasonably
acceptable to Acquiror, any third party Legal Action or other Claim (unless the
amount claimed under such Legal Action or other Claim exceeds the Escrow
Indemnity Funds, in which case Acquiror shall retain the right to control such
Legal Action or other Claim), but Acquiror may, at its election, participate in
the defense thereof at its sole cost and expense; provided, however, that if the
Agent shall fail to defend any such Legal Action or other Claim, then Acquiror
may defend, through counsel of its own choosing, such Legal Action or other
Claim, and (so long as it gives the Stockholders at least fifteen (15) days'
notice of the terms of the proposed settlement thereof and permits the
Stockholders to then undertake the defense thereof, except as set forth above)
settle such Legal Action or other Claim, and to recover out of the Escrow
Indemnity Funds the amount of such settlement or of any judgment and the costs
and expenses of such defense. The Agent shall not compromise or settle any such
Legal Action or other Claim without the prior written consent of Acquiror. All
reasonable costs and expenses defending any such third party Legal Action or
other Claim, including the amount of any settlement or of any judgment, shall be
paid out of the Escrow Indemnity Funds.

         Section 8.6. Balance Sheet Adjustment. Five business days prior to the
Closing Date, the Company shall prepare and deliver to Acquiror a schedule
showing the Company's best estimate of its Indebtedness as of the Effective Time
(the "Company Indebtedness Calculation"). If Acquiror disagrees with such
estimate, Representatives of the Company and Acquiror shall meet to discuss such
estimate, and the Company Indebtedness Calculation shall be revised, to the
extent agreed, to reflect such discussions. In addition, at the Closing, the
Company shall deliver to Acquiror a letter from Fleet Bank of Massachusetts,
N.A. certifying to Acquiror the entire unpaid balance (principal and interest)
of the Company's Indebtedness to Fleet Bank of Massachusetts, N.A., such that
the payment thereof at that time would terminate that Indebtedness. If the
Company Indebtedness Calculation indicates that the Indebtedness of the Company
is greater than $500,000, the Cash Amount shall be adjusted in accordance with
the definition thereof; if the Company Indebtedness Calculation indicates that
Indebtedness of the Company is less than $500,000, there shall be no such
adjustment.

         Section 8.7. Exclusive Remedy. Except as otherwise provided in this
Article and Section 9.8 of the Merger Agreement and Section 5.1 of the
Stockholders' Agreement, the 

                                      I-41
<PAGE>

indemnification provided in this Article shall be the sole and exclusive
post-Closing remedy available to Acquiror against the Stockholders for any Claim
under this Agreement.


                                   ARTICLE 9.

                               GENERAL PROVISIONS

         Section 9.1. Notices. All notices and other communications given or
made pursuant hereto shall be in writing and shall be deemed to have been duly
given or made as of the date delivered or transmitted, and shall be effective
upon receipt, if delivered personally, mailed by registered or certified mail
(postage prepaid, return receipt requested) to the parties at the following
addresses (or at such other address for a party as shall be specified by like
changes of address) or sent by electronic transmission to the telecopier number
specified below:



         (a)      If to Acquiror or Acquiror Merger Subsidiary:

                  Iron Mountain Incorporated
                  745 Atlantic Avenue, 10th Floor
                  Boston, MA  02110
                  Attention:  Chief Executive Officer
                  Telecopier No.:  (617) 357-9031

                  with a copy to:

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

         (b)      If to the Company or the Agent:

                  c/o B. Thomas Golisano
                  911 Panorama Trail South
                  Rochester, NY 14625
                  Telecopier No.:  (716) 383-3428

                  with a copy to:

                  Woods, Oviatt, Gilman, Sturman & Clarke LLP
                  44 Exchange Street
                  Rochester, NY  14614
                  Attention:  Harry P. Messina, Jr.
                  Telecopier No.: (716) 454-3968

                                      I-42
<PAGE>


         Section 9.2. Headings. The headings contained in this Agreement are for
purposes of reference only and shall not affect in any way the meaning or
interpretation of this Agreement.

         Section 9.3. Severability. If any term or provision of this Agreement
shall be held or deemed to be, or shall in fact be, invalid, inoperative,
illegal or unenforceable as applied to any particular case in any jurisdiction
or jurisdictions, or in all jurisdictions or in all cases, because of the
conflicting of any provision with any constitution or statute or rule of public
policy or for any other reason, such circumstance shall not have the effect of
rendering the provision or provisions in question invalid, inoperative, illegal
or unenforceable in any other jurisdiction or in any other case or circumstance
or of rendering any other provision or provisions herein contained invalid,
inoperative, illegal or unenforceable to the extent that such other provisions
are not themselves actually in conflict with such constitution, statute or rule
of public policy, but this Agreement shall be reformed and construed in any such
jurisdiction or case as if such invalid, inoperative, illegal or unenforceable
provision had never been contained herein and such provision reformed so that it
would be valid, operative and enforceable to the maximum extent permitted in
such jurisdiction or in such case. Notwithstanding the foregoing, in the event
of any such determination the effect of which is to Affect Materially and
Adversely either party, the parties shall negotiate in good faith to modify this
Agreement so as to effect the original intent of the parties as closely as
possible to the fullest extent permitted by Applicable Law in an acceptable
manner to the end that the Transactions are fulfilled and consummated to the
maximum extent possible.

         Section 9.4. Entire Agreement. This Agreement (together with the
Confidentiality Agreement, the Disclosure Schedule, the Acquiror Disclosure
Schedule and the other Collateral Documents delivered in connection herewith)
constitutes the entire agreement of the Parties and supersedes all prior
agreements and undertakings, both written and oral (other than the
Confidentiality Agreement), between the Parties, or any of them, with respect to
the subject matter hereof.

         Section 9.5. Assignment. This Agreement shall not be assigned by
operation of law or otherwise and any purported assignment shall be null and
void, provided that Acquiror may cause a wholly owned Subsidiary of Acquiror to
be substituted for Acquiror Merger Subsidiary as the party to the Merger and
may, in addition, assign the other rights, but not its obligations, including,
without limitation, its obligation to pay the Merger Consideration, under this
Agreement to such Subsidiary.

         Section 9.6. Parties in Interest. This Agreement shall be binding upon
and inure solely to the benefit of each Party, and nothing in this Agreement,
express or implied, is intended to or shall confer upon any Person any right,
benefit or remedy of any nature whatsoever under or by reason of this Agreement.

         Section 9.7. Governing Law. The validity, interpretation, construction
and performance of this Agreement shall be governed by, and construed in
accordance with, the applicable laws of the United States of America and the
laws of The Commonwealth of Massachusetts applicable to contracts made and
performed in such State and, in any event, without giving effect to any choice
or conflict of laws provision or rule that would cause the application of
domestic substantive laws of any other jurisdiction, except to the extent that
the provisions of the DGCL 

                                      I-43
<PAGE>

apply to the Merger. Anything in this Agreement to the contrary notwithstanding,
including without limitation the provisions of Article 8, in the event of any
dispute between the parties which results in a Legal Action, the prevailing
party shall be entitled to receive from the non-prevailing party reimbursement
for reasonable legal fees and expenses incurred by such prevailing party in such
Legal Action.

         Section 9.8. Enforcement of the Agreement. Each Party recognizes and
agrees that each other Party's remedy at law for any breach of the provisions of
this Agreement would be inadequate and agrees that for breach of such
provisions, such Party shall, in addition to such other remedies as may be
available to it at law or in equity or as provided in this Agreement, be
entitled to injunctive relief and to enforce its rights by an action for
specific performance to the extent permitted by Applicable Law. Each Party
hereby waives any requirement for security or the posting of any bond or other
surety in connection with any temporary or permanent award of injunctive,
mandatory or other equitable relief. Nothing herein contained shall be construed
as prohibiting a Party from pursuing any other remedies available to such Party
for any breach or threatened breach hereof or failure to take or refrain from
any action as required hereunder to consummate the Merger and carry out the
Transactions.

         Section 9.9. Counterparts. This Agreement may be executed in one or
more counterparts, and by the different Parties hereto in separate counterparts,
each of which when executed shall be deemed to be an original but all of which
taken together shall constitute one and the same agreement.

         Section 9.10. Mutual Drafting. This Agreement is the result of the
joint efforts of Acquiror and the Company, and each provision hereof has been
subject to the mutual consultation, negotiation and agreement of the parties and
there shall be no construction against any Party based on any presumption of
that Party's involvement in the drafting thereof.

         Section 9.11. Continuation of Covenants. Notwithstanding any
termination by Acquiror of this Agreement, the Company agrees that all of the
representations, warranties and covenants of the Company contained in this
Agreement shall continue and be in full force and effect for so long as Acquiror
has the right to commence an offer to purchase the Company Stock of the
Principal Stockholders pursuant to the terms and provisions of the Stockholders'
Agreement and, in the event Acquiror commences such an offer, until such time as
such offer is consummated.


                                   ARTICLE 10.

                                   DEFINITIONS

         As used herein, unless the context otherwise requires, the following
terms (or any variant in the form thereof) have the following respective
meanings. Terms defined in the singular shall have a comparable meaning when
used in the plural, and vice versa, and the reference to any gender shall be
deemed to include all genders. Unless otherwise defined or the context otherwise
clearly requires, terms for which meanings are provided herein shall have such
meanings when used in the Disclosure Schedule, the Acquiror Disclosure Schedule
and each Collateral Document, notice, certificate, communication, opinion or
other document executed 

                                      I-44
<PAGE>

or required to be executed pursuant hereto or thereto or otherwise delivered,
from time to time, pursuant hereto or thereto.

         ACQUIROR shall have the meaning given to it in the Preamble.

         ACQUIROR DISCLOSURE SCHEDULE shall mean the disclosure schedule dated
as of the date of this Agreement delivered by Acquiror to the Company.

         ACQUIROR MERGER SUBSIDIARY shall have the meaning given to it in the
Preamble.

         ACQUIROR SEC REPORTS shall have the meaning given to it in Section
4.3(a).

         ACQUIROR STOCK shall have the meaning given to it in the Preamble.

         ADVERSE, ADVERSELY, when used alone or in conjunction with other terms
(including without limitation "Affect,""Change" and"Effect") shall mean, with
respect to the Company or Acquiror, as the case may be, any Event which could
reasonably be expected to (a) adversely affect the validity or enforceability of
this Agreement or any Collateral Document or the likelihood of consummation of
the Merger, (b) adversely affect in any material respect the business,
operations, management, properties or the condition, (financial or other), or
results of operation (including without limitation, earnings before interest,
taxes, depreciation and amortization) of the Company or Acquiror, as the case
may be (it being understood that a reduction in the Market Value of Acquiror
Stock shall not, in and of itself, constitute or be deemed to reflect an Adverse
Change), (c) impair the Company's or Acquiror's, as the case may be, ability to
fulfill its obligations under the terms of this Agreement or any Collateral
Document, or (d) adversely affect in any material respect the aggregate rights
and remedies of Acquiror under this Agreement or any Collateral Document.

         AFFILIATE, AFFILIATED shall mean, with respect to any Person, (a) any
other Person at the time directly or indirectly controlling, controlled by or
under direct or indirect common control with such Person, (b) any other Person
of which such Person at the time owns, or has the right to acquire, directly or
indirectly, ten percent (10%) or more of any class of the capital stock or
beneficial interest, (c) any other Person which at the time owns, or has the
right to acquire, directly or indirectly, ten percent (10%) or more of any class
of the capital stock or beneficial interest of such Person, (d) any executive
officer or director of such Person, (e) with respect to any partnership, joint
venture or similar Entity, any general partner thereof, and (f) when used with
respect to an individual, shall include any member of such individual's
immediate family or a family trust.

         AFFILIATE AGREEMENT shall have the meaning given to it in Section
5.3(a).

         AGENT shall have the meaning given to it in Section 8.2(c).

         AGREEMENT shall mean this Agreement as originally in effect, including
unless the context otherwise specifically requires, all schedules and exhibits
hereto, as the same may from time to 

                                      I-45
<PAGE>

time be supplemented, amended, modified or restated in the manner herein or
therein provided.

         ALTERNATIVE TRANSACTION shall have the meaning given to it in Section
1.9.

         APPLICABLE LAW shall mean any Law of any Authority, whether domestic or
foreign, including without limitation the DGCL, all federal and state securities
laws, the Code, ERISA and Environmental Laws, to or by which a Person or it or
any of its business or operations is subject or any of its property or assets is
bound.

         AUTHORITY shall mean any governmental or quasi-governmental authority,
whether administrative, executive, judicial, legislative or other, or any
combination thereof, including without limitation any federal, state,
territorial, county, municipal or other government or governmental or
quasi-governmental agency, arbitrator, authority, board, body, branch, bureau,
central bank or comparable agency or Entity, commission, corporation, court,
department, instrumentality, master, mediator, panel, referee, system or other
political unit or subdivision or other Entity of any of the foregoing, whether
domestic or foreign.

         BENEFIT ARRANGEMENT shall mean any material benefit arrangement that is
not a Plan, including (i) any employment or consulting agreement, (ii) any
arrangement providing for insurance coverage or workers' compensation benefits,
(iii) any incentive bonus or deferred bonus arrangement, (iv) any arrangement
providing termination allowance, severance, salary continuation for disability,
or other leave of absence, supplemental unemployment benefits, lay-off,
reduction in force or similar benefits, (v) any equity compensation plan, (vi)
any deferred compensation plan, (vii) any compensation policy and practice,
(viii) any educational assistance arrangements or policies and (ix) any change
of control arrangements or policies.

         CASH AMOUNT shall mean the difference between (a) $12,090,000 and (b)
in the event the Company Indebtedness Calculation exceeds $500,000, an amount
equal to such amount above $500,000.

         CASH CONVERSION NUMBER shall mean the quotient obtained by dividing (i)
the Cash Amount by (ii) the sum of (a) the number of shares of Company Stock
issued and outstanding immediately prior to the Merger (except shares subject to
Section 2.1(b)) and (b) the number of shares of Company Stock which may be
issued pursuant to Option Securities which are exercisable as of the Effective
Time (including those which will become exercisable by virtue of the
consummation of the Merger).

         CASH MERGER CONSIDERATION shall have the meaning given to it in Section
2.1(a).

         CERTIFICATE shall have the meaning given to it in Section 2.1(a).

         CLAIMS shall mean any and all debts, liabilities, obligations, losses,
damages, deficiencies, assessments and penalties, together with all Legal
Actions, pending or threatened, claims and judgments of whatever kind and nature
relating thereto, and all fees, costs, expenses and disbursements (including
without limitation reasonable attorneys' and other legal fees, costs and
expenses) relating to any of the foregoing.

                                      I-46
<PAGE>

         CLOSING shall have the meaning given to it in Section 1.3.

         CLOSING DATE shall have the meaning given to it in Section 1.3.

         COBRA shall mean the Consolidated Omnibus Budget Reconciliation Act of
1985, as amended, as set forth in Section 4980B of the Code and Part 6 of Title
I of ERISA.

         CODE shall have the meaning given to it in the Preamble.

         COLLATERAL DOCUMENT shall mean any agreement, instrument, certificate,
opinion, memorandum, schedule or other document delivered by a Party or a
Stockholder pursuant to this Agreement or in connection with the Merger and the
Transactions.

         COMMON STOCK AMOUNT shall mean the quotient obtained by dividing (a)
$49,910,000 by (b) the Determination Price.

         COMPANY shall have the meaning given to it in the Preamble.

         COMPANY INDEBTEDNESS CALCULATION shall have the meaning given to it in
Section 8.6.

         THE COMPANY'S KNOWLEDGE (including the term "to the knowledge of the
Company") means the knowledge, information or belief of any Company director,
executive officer or any Principal Stockholder; and that such director,
executive officer or Principal Stockholder, after reasonable investigation
(which shall include, without limitation, interrogation of John Cercone, Kristen
Gardner, Michael Karp and Michael Young but, due to the Parties' desire and need
for secrecy, shall not include interrogation of any other employee, including,
without limitation, any branch manager), shall have reason to believe and shall
believe that the subject representation or warranty is true and accurate as
stated.

         COMPANY OPTION PLAN shall have the meaning given to it in Section
3.13(b).

         COMPANY STOCK shall have the meaning given to it in Section 2.1(a).

         CONFIDENTIALITY AGREEMENT shall have the meaning given to it in Section
5.1(a).

         CONTRACT, CONTRACTUAL OBLIGATION shall mean any term, condition,
provision, representation, warranty, agreement, covenant, undertaking,
commitment, indemnity or other obligation which is outstanding or existing under
any instrument, contract, lease or other contractual undertaking to which the
obligee is a party or by which it or any of its business is subject or property
or assets is bound.

         CONTROL (including the terms "controlled," "controlled by" and "under
common control with") means the possession, directly or indirectly or as trustee
or executor, of the power to direct or cause the direction of the management or
policies of a Person, or the disposition of such Person's assets or properties,
whether through the ownership of stock, equity or other 

                                      I-47
<PAGE>

ownership, by contract, arrangement or understanding, or as trustee or executor,
by contract or credit arrangement or otherwise.

         CONVERTIBLE SECURITIES shall mean any evidences of indebtedness, shares
of capital stock (other than common stock) or other securities directly or
indirectly convertible into or exchangeable for Shares, whether or not the right
to convert or exchange thereunder is immediately exercisable or is conditioned
upon the passage of time, the occurrence or non-occurrence or existence or
non-existence of some other Event, or both.

         DETERMINATION PRICE shall mean the average closing price per share of
Acquiror Stock for the period of 20 trading days ending three trading days prior
to the Closing Date; provided however, that if the average closing price per
share of Acquiror Stock for such period is less than $26.00, then the
Determination Price shall be $26.00, and provided further that if the average
closing price per share of Acquiror Stock for such period is greater than
$31.00, then the Determination Price shall be $31.00. The closing price for each
such trading day shall be the last quoted sale price or, if not so quoted, the
average of the low bid and high asked prices on the Nasdaq National Market
System.

         DGCL shall have the meaning given to it in the Preamble.

         DIRECTORS PLAN shall have the meaning given to it in Section 3.13(b).

         DISCLOSURE SCHEDULE shall mean the disclosure schedule dated as of the
date of this Agreement delivered by the Company to Acquiror.

         DISSENTING SHARES shall have the meaning given to it in Section 2.5(a).

         DISTRIBUTION shall mean, with respect to the Company: (a) the
declaration or payment of any dividend (except dividends payable in Company
Stock) on or in respect of any shares of any class of capital stock of the
Company owned by a Person other than the Company, (b) the purchase, redemption
or other retirement of any shares of any class of capital stock of the Company
owned by a Person other than the Company, and (c) any other distribution on or
in respect of any shares of any class of capital stock of the Company owned by a
Person other than the Company.

         EFFECTIVE TIME shall have the meaning given to it in Section 1.4.

         EMPLOYMENT ARRANGEMENT shall mean, with respect to any Person, any
employment, consulting, retainer, severance or similar contract, agreement,
plan, arrangement or policy (exclusive of any which is terminable within thirty
(30) days without liability, penalty or payment of any kind by such Person or
any Affiliate (other than any such liability, penalty or payment of general
application to all the Company's employees)), providing for severance,
termination payments, insurance coverage (including any self-insured
arrangements), workers compensation, disability benefits, life, health, medical,
dental or hospitalization benefits, supplemental unemployment benefits, vacation
or sick leave benefits, pension or retirement benefits or for deferred
compensation, profit-sharing, bonuses, stock options, stock purchase or

                                      I-48
<PAGE>

appreciation rights or other forms of incentive compensation or post-retirement
insurance, compensation or benefits, or any collective bargaining or other labor
agreement, whether or not any of the foregoing is subject to the provisions of
ERISA.

         ENCUMBER shall mean to suffer, accept, agree to or permit the
imposition of any Lien.

         ENFORCEABILITY EXCEPTIONS shall have the meaning set forth in Section
3.1(b).

         ENTITY shall mean any corporation, firm, unincorporated organization,
association, partnership, limited liability company, trust (inter vivos or
testamentary), estate of a deceased, insane or incompetent individual, business
trust, joint stock company, joint venture or other organization, entity or
business, whether acting in an individual, fiduciary or other capacity, or any
Authority.

         ENVIRONMENTAL LAW shall mean any Law relating to or otherwise imposing
liability or standards of conduct concerning pollution or protection of the
environment or occupational health and safety, including without limitation Laws
relating to emissions, discharges, releases or threatened releases of Hazardous
Materials or other pollutants, contaminants, chemicals, noises, odors or
industrial, toxic or hazardous substances, materials or wastes, whether as
matter or energy, into the environment (including, without limitation, ambient
air, surface water, ground water, land surface or subsurface strata) or
otherwise relating to the manufacture, processing, generation, distribution,
use, treatment, storage, disposal, cleanup, transport or handling of pollutants,
contaminants, chemicals or industrial, toxic or hazardous substances, materials
or wastes.

         ENVIRONMENTAL PERMIT shall mean any Governmental Authorization required
by or pursuant to any Environmental Law.

         ERISA shall mean the Employee Retirement Income Security Act of 1974,
and the rules and regulations thereunder, all as from time to time in effect, or
any successor law, rules or regulations, and any reference to any statutory or
regulatory provision shall be deemed to be a reference to any successor
statutory or regulatory provision.

         ERISA AFFILIATE shall mean any Person that is or has ever been treated
as a single employer with the Company under Sections 414(b), (c), (m) or (o) of
the Code or Section 4001(b)(1) of ERISA.

         ESCROW AGREEMENT shall have the meaning given to it in Section 8.3(b).

         ESCROW INDEMNITY FUNDS shall have the meaning given to it in the
Stockholders' Agreement.

         ESCROW INDEMNITY PERIOD shall have the meaning given to it in Section
8.1.

                                      I-49
<PAGE>

         EVENT shall mean the occurrence or existence of any act, action,
activity, circumstance, condition, event, fact, failure to act, omission,
incident or practice, or any set or combination of any of the foregoing.

         EXCHANGE ACT shall mean the Securities Exchange Act of 1934, and the
rules and regulations of the Commission thereunder, all as from time to time in
effect, or any successor law, rules or regulations, and any reference to any
statutory or regulatory provision shall be deemed to be a reference to any
successor statutory or regulatory provision.

         EXCHANGE AGENT shall have the meaning given to it in Section 2.2(a).

         EXCHANGE FUND shall have the meaning given to it in Section 2.2(a).

         EXCHANGE MERGER CONSIDERATION shall have the meaning given to it in
Section 2.1(a).

         EXPENSES shall have the meaning set forth in Section 7.5(a).

         FINANCIAL STATEMENTS shall have the meaning given to it in Section
3.2(a).

         GAAP shall mean generally accepted accounting principles as in effect
from time to time in the United States of America.

         GOVERNMENTAL AUTHORIZATIONS shall mean all approvals, concessions,
consents, franchises, licenses, permits, plans, registrations and other
authorizations of all Authorities.

         GOVERNMENTAL FILINGS shall mean all filings, including franchise and
similar Tax filings, and the payment of all fees, assessments, interest and
penalties associated with such filings, with all Authorities.

         GUARANTY OR GUARANTEED shall mean any agreement, undertaking or
arrangement by which the Company guarantees, endorses or otherwise becomes or is
liable, directly or indirectly, contingently or otherwise, upon any indebtedness
of any other Person including without limitation the payment of amounts drawn
down by beneficiaries of letters of credit (other than by endorsements of
negotiable instruments for deposit or collection in the ordinary course of
business). The amount of the obligor's obligation under any Guaranty shall be
deemed to be the outstanding amount (or maximum permitted amount, if larger) of
the indebtedness directly or indirectly guaranteed thereby (subject to any
limitation set forth therein).

         HAZARDOUS MATERIALS shall mean any substance (in whatever state of
matter): (a) the presence of which requires investigation or remediation under
any Environmental Law; (b) that is defined as a "hazardous waste","hazardous
material" or "hazardous substance" under any Environmental Law; (c) that is
toxic, explosive, corrosive, pollutive, contaminating, infectious, radioactive,
carcinogenic, mutagenic or otherwise hazardous and is regulated by any
Authority; (d) that contains or consists of petroleum or petroleum products,
PCBs, asbestos, or urea formaldehyde foam insulation.

                                      I-50
<PAGE>

         HSR ACT shall mean the Hart-Scott-Rodino Antitrust Improvement Act of
1976, and the rules and regulations thereunder, all as from time to time in
effect, or any successor law, rules or regulations, and any reference to any
statutory or regulatory provision shall be deemed to be a reference to any
successor statutory or regulatory provision.

         INDEBTEDNESS shall mean, with respect to the Company, all obligations,
contingent or otherwise, which in accordance with GAAP should be classified upon
the Company's consolidated balance sheet as liabilities in respect of borrowed
money and all guarantees, endorsements and other contingent obligations in
respect of Indebtedness of others (it being understood that obligations of the
Company in respect of trade payables and capitalized leases incurred in the
ordinary course of business shall not be included in the definition of
Indebtedness).

         INTANGIBLE ASSETS shall mean all assets and property lacking physical
properties the evidence of ownership of which must customarily be maintained by
independent registration, documentation, certification, recordation or other
means.

         LAW shall mean any (a) administrative, judicial, legislative or other
action, code, consent decree, constitution, decree, directive, enactment,
finding, guideline, law, injunction, interpretation, judgment, order, ordinance,
policy statement, proclamation, promulgation, regulation, requirement, rule,
rule of law, rule of public policy, settlement agreement, statute, or writ or
any Authority, domestic or foreign; (b) the common law, or other legal or
quasi-legal precedent; or (c) arbitrator's, mediator's or referee's award,
decision, finding or recommendation; including, in each such case or instance,
any interpretation, directive, guideline or request, whether or not having the
force of law including, in all cases, without limitation any particular section,
part or provision thereof.

         LEASE shall mean any lease of property, whether real, personal or
mixed, and all amendments thereto.

         LEGAL ACTION shall mean any litigation or legal or other actions,
arbitrations, counterclaims, proceedings, requests for material information by
or pursuant to the order of any Authority, or suits, at law or in arbitration,
equity or admiralty commenced by any Person, whether or not purported to be
brought on behalf of a party hereto affecting such party or any of such party's
business, property or assets.

         LIEN shall mean any of the following: mortgage; lien (statutory or
other); preference, priority or other security agreement, arrangement or
interest; hypothecation, pledge or other deposit arrangement; assignment;
charge; levy; executory seizure; attachment; garnishment; encumbrance (including
any easement, exception, variance, reservation or limitation, right of way,
zoning restriction, building or use restriction, and the like); conditional
sale, title retention or other similar agreement, arrangement, device or
restriction; preemptive or similar right; any financing lease involving
substantially the same economic effect as any of the foregoing; the filing of
any financing statement under the Uniform Commercial Code or comparable law of
any jurisdiction; restriction on sale, transfer, assignment, disposition or
other alienation; or any 

                                      I-51
<PAGE>

option, equity, claim or right of or obligation to, any other Person, of
whatever kind and character.

         LOSS AND EXPENSE shall have the meaning given to it in Section 8.2.

         MATERIAL OR MATERIALITY for the purposes of this Agreement, shall,
unless specifically stated to the contrary, be determined without regard to the
fact that various provisions of this Agreement set forth specific dollar
amounts.

         MATERIAL AGREEMENT OR MATERIAL COMMITMENT shall mean, with respect to
the Company, any Contractual Obligation (a) which (i) involves the purchase,
sale or lease of goods or materials or performance of services aggregating more
than Twenty-five Thousand Dollars ($25,000), (ii) extends for more than three
(3) months, or (iii) is not terminable on thirty (30) days or less notice
without penalty or other payment, (b) which involves indebtedness for money
borrowed in excess of One Hundred Thousand Dollars ($100,000) or (c) which is or
otherwise constitutes a written agency, dealer, license, distributorship, sales
representative or similar written agreement.

         MERGER shall have the meaning given to it in the Preamble.

         MERGER CONSIDERATION shall have the meaning given to it in Section
2.1(a).

         MULTIEMPLOYER PLAN shall mean a "multiemployer plan" within the meaning
of Section 4001(a)(3) of ERISA.

         NET SHARES shall have the meaning given to it in Section 2.2(a).

         OPTION PLANS shall have the meaning given to it in Section 3.13(b).

         OPTION SECURITIES shall mean all rights, options and warrants, and
calls or commitments evidencing the right, to subscribe for, purchase or
otherwise acquire Shares or Convertible Securities, whether or not the right to
subscribe for, purchase or otherwise acquire is immediately exercisable or is
conditioned upon the passage of time, the occurrence or non-occurrence or the
existence or non-existence of some other Event.

         ORGANIC DOCUMENT shall mean the Company's Certificate of Incorporation,
its by-laws and all stockholder agreements, voting trusts and similar
arrangements applicable to any of its capital stock, each as in effect from time
to time.

         OTHER TRANSACTION shall mean a transaction or series of related
transactions (other than the Merger) resulting in (a) any change in control of
the Company, (b) any merger or consolidation of the Company, regardless of
whether the Company is the surviving Entity, (c) any tender offer or exchange
offer for, or any acquisition of, any securities of the Company, (d) any sale or
other disposition of assets of the Company not otherwise permitted under Section
3.17 hereof, or (e) so long as this Agreement remains in effect, any issue or
sale, or any agreement to issue or sell, any capital stock, Convertible
Securities or Option Securities of the 

                                      I-52
<PAGE>

Company (other than the issuance of shares in accordance with the terms of
Option Securities outstanding on the date hereof).

         PARTY shall mean a signatory to this Agreement.

         PBGC shall mean the Pension Benefit Guaranty Corporation and any Entity
succeeding to any or all of its functions under ERISA.

         PERMITTED LIENS shall mean any of the following Liens: (i) building and
zoning ordinances and by-laws of any applicable Authority applicable to the
Property; (ii) taxes assessed or to be assessed on the Property for the then
current year to the extent the same are not yet due or payable; and (iii)
rights, easements and restrictions of record, provided the same do not
materially interfere with the current occupancy and use of the Property by the
Company.

         PERSON shall mean any natural individual or any Entity.

         PLAN shall mean, with respect to the Company and at a particular time,
any employee benefit plan which is covered by ERISA and in respect of which the
Company, or, in the case of any such plan subject to Title IV of ERISA, an ERISA
Affiliate is (or, if such plan were terminated at such time, would under Section
4069 of ERISA be deemed to be) an "employer," as defined in Section 3(5) of
ERISA, other than a Multiemployer Plan.

         PRINCIPAL STOCKHOLDERS shall mean B. Thomas Golisano and James B.
Wayman, Jr.

         PRIVATE AUTHORIZATIONS shall mean all approvals, concessions, consents,
franchises, licenses, permits, and other authorizations of all Persons (other
than Authorities) including without limitation those with respect to patents,
trademarks, service marks, trade names, copyrights, computer software programs,
technology and know-how, but not including those with respect to Leases.

         PROPERTY shall mean each of the premises located at 5 Fortune Drive,
Billerica, Massachusetts, 96 High Street, Billerica, Massachusetts and 520 Metro
Park West, Rochester, New York, including all buildings and other improvements
and fixtures thereon (but only to the extent such improvements and fixtures are
owned by the owner of such Property and not the Company).

         PROSPECTUS shall mean the form of prospectus to form part of the
Registration Statement.

         REGISTERED STOCK shall mean that portion of the Stock Merger
Consideration consisting of shares of Acquiror Stock to be registered pursuant
to the Securities Act.

         REGISTRATION RIGHTS AGREEMENT shall have the meaning given to it in
Section 5.3(b).

         REGISTRATION STATEMENT shall mean the registration statement (including
the Prospectus, exhibits, financial statements and schedules included therein),
and all amendments thereof 

                                      I-53
<PAGE>

(including post-effective amendments) and supplements to the Prospectus which
are a part thereof, filed under the Securities Act registering the Registered
Stock.

         REPRESENTATIVES of a Party shall mean the officers, directors,
employees, accountants, counsel, financial advisors, consultants and other
representatives of such Party.

         SEC shall mean the Securities and Exchange Commission of the United
States or any successor Authority.

         SECURITIES ACT shall mean the Securities Act of 1933, and the rules and
regulations of the Commission thereunder, all as from time to time in effect, or
any successor law, rules or regulations, and any reference to any statutory or
regulatory provision shall be deemed to be a reference to any successor
statutory or regulatory provision.

         SHARE PRICE shall mean the quotient obtained by dividing (i) the
difference between $62,000,000 and, in the event the Company Indebtedness
Calculation exceeds $500,000, an amount equal to such amount above $500,000, by
(ii) the sum of (a) the number of shares of Company Stock issued and outstanding
immediately prior to the Merger (except shares subject to Section 2.1(b)) and
(b) the number of shares of Company Stock which may be issued pursuant to Option
Securities which are exercisable as of the Effective Time (including those which
will become exercisable by virtue of the consummation of the Merger).

         SHARES shall have the meaning given to it in Section 2.1(a).

         SPECIAL MEETING shall have the meaning given to it in Section 1.2(a).

         STOCK CONVERSION NUMBER shall mean the quotient obtained by dividing
(i) the Common Stock Amount by (ii) the sum of (a) the number of shares of
Company Stock issued and outstanding immediately prior to the Merger (except
shares subject to Section 2.1(b)) and (b) the number of shares of Company Stock
which may be issued pursuant to Option Securities which are exercisable as of
the Effective Time (including those which will become exercisable by virtue of
the consummation of the Merger).

         STOCKHOLDERS shall mean the Principal Stockholders and all other
Persons entitled to Merger Consideration (or who would be entitled thereto but
for their dissent from the Merger) pursuant to Sections 2.1(a) or (to the extent
Persons holding Option Securities or Convertible Securities exercise their
rights to acquire Shares prior to the Effective Time, from and after the time
they acquire such Shares) 2.4.

         STOCKHOLDERS' AGREEMENT shall mean that certain Stockholders' Agreement
of even date herewith among the Principal Stockholders and Acquiror, as the same
may from time to time be supplemented, amended, modified or restated in the
manner therein provided.

         STOCK MERGER CONSIDERATION shall have the meaning given to it in
Section 2.1(a).

                                      I-54
<PAGE>

         SUBSIDIARY shall mean, with respect to a Person, any Entity a majority
of the capital stock ordinarily entitled to vote for the election of directors
of which, or if no such voting stock is outstanding, a majority of the equity
interests of which, is owned directly or indirectly, legally or beneficially, by
such Person or any other Person controlled by such Person.

         SURVIVING CORPORATION shall have the meaning given to it in Section 1.1

         TAX (and "Taxable", which shall mean subject to Tax), shall mean, with
respect to the Company, (a) all taxes (domestic or foreign), including without
limitation any income (net, gross or other including recapture of any tax items
such as investment tax credits), alternative or add-on minimum tax, gross
income, gross receipts, gains, sales, use, leasing, lease, user, ad valorem,
transfer, recording, franchise, profits, property (real or personal, tangible or
intangible), fuel, license, withholding on amounts paid to or by the Company,
payroll, employment, unemployment, social security, excise, severance, stamp,
occupation, premium, environmental or windfall profit tax, custom, duty or other
tax, governmental fee or other like assessment or charge of any kind whatsoever,
together with any interest, levies, assessments, charges, penalties, addition to
tax or additional amount imposed by any Taxing Authority, (b) any joint or
several liability of the Company with any other Person for the payment of any
amounts of the type described in (a), and (c) any liability of the Company for
the payment of any amounts of the type described in (a) as a result of any
express or implied obligation to indemnify any other Person.

         TAX CLAIM shall mean any Claim which relates to Taxes, including
without limitation the representations and warranties set forth in Section 3.11.

         TAX RETURN OR RETURNS shall mean all returns, consolidated or otherwise
(including without limitation information returns), required to be filed with
any Authority with respect to Taxes.

         TAXING AUTHORITY shall mean any Authority responsible for the
imposition of any Tax.

         TERMINATION DATE shall mean September 30, 1997 or such other date as
the Parties may, from time to time, mutually agree; provided, however, that in
the event that any waiting periods or requests under the HSR Act have not
expired or been satisfied by September 30, 1997, the Termination Date shall mean
December 31, 1997.

         TRANSACTIONS shall mean the other transactions contemplated by this
Agreement or the Merger or by any Collateral Document executed or required to be
executed in connection herewith or therewith.

         TRANSMITTAL DOCUMENTS shall have the meaning given to it in Section
2.2(b).



                     [Signatures appear on following page.]

                                      I-55
<PAGE>


         IN WITNESS WHEREOF, Acquiror, Acquiror Merger Subsidiary and the
Company have caused this Agreement to be executed as of the date first written
above by their respective officers thereunto duly authorized.

                           IRON MOUNTAIN INCORPORATED


                         By: /s/ David S. Wendell
                             ----------------------------------------------
                             Name: David S. Wendell
                             Title: President and Chief Operating Officer



                         IM-1 ACQUISITION CORP.


                         By: /s/ John P. Lawrence
                             ----------------------------------------------
                             Name: John P. Lawrence
                             Title: Treasurer


                         SAFESITE RECORDS MANAGEMENT
                         CORPORATION

                         By: /s/ B. Thomas Golisano
                             ----------------------------------------------
                             Name: B. Thomas Golisano
                             Title:  Chairman

                         By: /s/ James B. Wayman, Jr.
                             ----------------------------------------------
                             Name: James B. Wayman, Jr.
                             Title:  President


                                      I-56
<PAGE>


                                                                        ANNEX II


                    AMENDMENT TO ACQUIROR'S RESTATED BY-LAWS

                                   ARTICLE XII

 RESTRICTIONS ON TRANSFER OF CERTAIN SHARES OF CAPITAL STOCK OF THE CORPORATION

         Section 1. Restrictions on Transfer. Any Person who receives any shares
of Common Stock of the Corporation (the "Merger Securities") issued pursuant to
the Agreement and Plan of Merger, dated as of February 19, 1997, by and among
the Corporation, IM-1 Acquisition Corp. and Safesite Records Management
Corporation, as amended (the "Merger Agreement"), shall not Transfer (as defined
herein), and the Corporation shall not be required to register the Transfer of,
the number of shares, rounded upward to the nearest whole share (the "Subject
Shares"), of the Merger Securities equal to the product of (1) the quotient
obtained by dividing (x) the "Lock-up Value" by (y) the product of (A) the
Common Stock Amount and (B) the lesser of the Closing Price and the
Determination Price multiplied by (2) the Stock Merger Consideration received by
such Person in connection with the Merger, until the first anniversary date of
the effective date of the Merger Agreement (the "Effective Time"), except as
otherwise allowed by the Board of Directors of the Corporation in its sole
discretion. The "Lock-up Value" shall mean one half (1/2) of the sum of (x) the
product of the Common Stock Amount and the lesser of the Closing Price and the
Determination Price plus (y) the Cash Amount. The "Closing Price" shall mean the
closing price per share of Acquiror Stock for the trading day immediately prior
to the Effective Time. The closing price for such trading day shall be the last
quoted sale price or, if not so quoted, the average of the low bid and high
asked prices on the Nasdaq National Market System. Capitalized terms used herein
and not otherwise defined shall have the meanings prescribed therefor in the
Merger Agreement. The term "Transfer" means any indirect or direct transfer,
offer to sell, sale, assignment, grant of an option to acquire, pledge, or other
disposition.

         Section 2. Legend on Stock Certificates. The Corporation shall note on
the certificates for the Subject Shares of Merger Securities issued upon
transfer that the shares represented by such certificates are subject to the
restrictions on transfer and registration of transfer imposed in this Article
XII.

         Section 3. Termination of Restrictions on Transfers. The provisions of
this Article XII shall terminate in their entirety on the first anniversary of
the Effective Time.

                                      II-1
<PAGE>



                                                                       ANNEX III
                             STOCKHOLDERS' AGREEMENT


                  AGREEMENT, dated as of February 19, 1997, among Iron Mountain
Incorporated, a Delaware corporation ("Acquiror"), those stockholders of
Safesite Records Management Corporation, a Delaware corporation (the "Company")
signatory hereto (the "Initial Stockholders"), including, without limitation, B.
Thomas Golisano, an individual residing at 911 Panorama Trail South, Rochester,
NY 14625 ("Golisano"), and James B. Wayman, Jr., an individual residing at 251
Old Billerica Road, Bedford, MA 01730 ("Wayman"), in his individual capacity and
as custodian for Alexander B. Wayman and Catherine Lia Wayman and those other
stockholders of the Company which have become party hereto by execution of an
instrument in accordance with Section 6.8 hereof (the "Additional Stockholders"
and, together with the Initial Stockholders, the "Stockholders").

                              W I T N E S S E T H:

                  WHEREAS, each of the Initial Stockholders is the beneficial
and record owner of the shares of Common Stock, $.01 par value per share (the
"Company Stock") of the Company, set forth opposite each such Initial
Stockholder's name on Schedule A-1;

                  WHEREAS, concurrently with the execution of this Agreement,
Acquiror and the Company are entering into an Agreement and Plan of Merger (the
"Merger Agreement") pursuant to which a wholly owned subsidiary of Acquiror will
be merged with and into the Company (the "Merger"), with the Company continuing
as the Surviving Corporation; and

                  WHEREAS, in order to induce Acquiror to enter into the Merger
Agreement, the Stockholders wish to make certain representations, warranties,
covenants and agreements in connection with the Merger.

                  NOW, THEREFORE, in consideration of the premises and other
good and valuable consideration, the receipt and adequacy of which are hereby
acknowledged, the parties hereto hereby agree as follows:


                                    ARTICLE I

                                   DEFINITIONS

                  1.1 Definitions. Capitalized terms used herein but not
otherwise defined herein shall have the respective meanings ascribed thereto in
the Merger Agreement and the following terms shall have the following meanings:

                  "Additional Stockholders" shall have the meaning set forth in
the opening paragraph of this Agreement.


                                      III-1
<PAGE>



                  "beneficially own" shall have the meaning set forth in Rule
13d-3 under the Exchange Act.

                  "Equity Securities" shall have the meaning set forth in Rule
405 under the Securities Act.

                  "Golisano" shall have the meaning set forth in the opening
paragraph of this Agreement.

                  "Initial Stockholders" shall have the meaning set forth in the
opening paragraph of this Agreement.

                  "Intention" shall have the meaning set forth in Section
2.1(f).

                  "Merger Agreement" shall have the meaning set forth in the
second recital of this Agreement.

                  "Offer" and "Offer Consideration" shall have the meanings set
forth in Section 3.7(a).

                  "Permitted Assignee" shall mean with respect to each
Stockholder, (x) such Stockholder's lineal descendants, siblings and lineal
descendants of siblings, (y) a trust for the benefit of, the estate of,
executors, personal representatives, administrators, guardians or conservators
of, any of the individuals referred to in the foregoing clause (x) (but only in
their capacity as such) and (z) charitable trusts and charitable foundations
formed by such Stockholder.

                  "Proportionate Share" shall mean, as to each Stockholder, a
fraction the numerator of which is the Offer Consideration such Stockholder
receives pursuant to the Offer and the denominator of which is the Offer
Consideration all Stockholders receive pursuant to the Offer.

                  "Related Transaction" shall mean a transaction that is in
contemplation of, or related or pursuant to, the Merger or the Merger Agreement.

                  "Restricted Stockholder" shall mean any Stockholder that,
individually or together with its Affiliates, beneficially owns, or is a member
of a "group" (within the meaning of Section 13(d)(3) of the Exchange Act) that
beneficially owns, 5% or more of Acquiror Stock.

                  "Sale" shall have the meaning set forth in Section 2.1(f).

                  "Stockholder Disclosure Letter" shall have the meaning set
forth in Section 2.1(a).

                  "Third Party" shall mean a party or parties unaffiliated with
either the Company or Acquiror.


                                      III-2

<PAGE>



                  "Transfer" shall have the meaning set forth in Section 3.8.

                  "Voting Securities" shall have the meaning set forth in Rule
405 under the Securities Act.

                  "Wayman" shall have the meaning set forth in the opening
paragraph of this Agreement.

                                   ARTICLE II

                         REPRESENTATIONS AND WARRANTIES
                               OF THE STOCKHOLDERS

                  2.1 Representations and Warranties of the Stockholders. Each
Stockholder represents and warrants, severally but not jointly, to Acquiror as
follows:

                  (a) Ownership of Company Shares. Except as disclosed in
Section 2.1(a) of the letter from the Stockholders to Acquiror, dated the date
hereof or the date such Stockholder becomes party hereto (the "Stockholder
Disclosure Letter"), such Stockholder is the beneficial owner of the shares of
Company Stock set forth opposite such Stockholder's name on Schedule A-1, free
and clear of all Liens and, except for this Agreement and the Merger Agreement,
there are no options, warrants or other rights, agreements, arrangements or
commitments of any character to which such Stockholder is a party relating to
the pledge, disposition or voting of any shares of the Company Stock that are
owned by such Stockholder, and there are no voting trusts or voting agreements
with respect to such shares. The shares of Company Stock set forth opposite such
Stockholder's name on Schedule A-1 constitute all of the outstanding shares of
capital stock of the Company owned beneficially or of record by such Stockholder
and such Stockholder does not have any options, warrants or other rights to
acquire any additional shares of capital stock of the Company or any security
exercisable or exchangeable for, or convertible into, shares of capital stock of
the Company other than as set forth on Schedule A-1.

                  (b) Authority to Execute and Perform Agreements. Such
Stockholder has the full legal right and power and all authority required to
enter into, execute and deliver this Agreement and to perform fully such
Stockholder's obligations hereunder. The execution and delivery of this
Agreement by such Stockholder have been duly authorized by all requisite
organizational action, if any, on the part of such Stockholder. This Agreement
has been duly executed and delivered and constitutes the legal, valid and
binding obligation of such Stockholder enforceable against such Stockholder in
accordance with its terms (subject to the Enforceability Exceptions).

                  (c) No Conflicts; Consents. (i) Except as set forth in Section
2.1(c) of the Stockholder Disclosure Letter, the execution and delivery by such
Stockholder of this Agreement do not, and the consummation of the transactions
contemplated hereby will not, conflict with or result in any violation of or
default (with or without notice or lapse of time, or both) under (A)

                                      III-3

<PAGE>



any contract, agreement or other binding arrangement to which such Stockholder
is a party or (B) any judgment, order, writ, injunction or decree of any court,
governmental body, administrative agency or arbitrator applicable to such
Stockholder.

                  (ii) Except as set forth in Section 2.1(c) of the Stockholder
Disclosure Letter, no Governmental Authorizations or Private Authorizations are
required to be obtained or made by such Stockholder in connection with the
execution and delivery by such Stockholder of this Agreement and the
consummation of the transactions contemplated hereby.

                  (d) Information Supplied. None of the information specifically
supplied or to be supplied by such Stockholder with respect to such Stockholder
for inclusion or incorporation by reference in (i) the Registration Statement
will, at the time the Registration Statement is filed with the SEC and at the
time it becomes effective under the Securities Act, contain any untrue statement
of a material fact or omit to state any material fact required to be stated
thereon or necessary to make the statements therein not misleading and (ii) the
proxy statement to be delivered to all stockholders of the Company (the "Proxy
Statement") will, at the date the Proxy Statement is first mailed to the
Company's Stockholders and at the time of the special meeting of Company
Stockholders for the purpose of voting on the Merger Agreement, contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary in order to make the statements therein, in
light of the circumstances under which they are made, not misleading.

                  (e) Investigation. Such Stockholder has had a full opportunity
to review and discuss this Agreement, the Escrow Agreement and the Merger
Agreement (including, without limitation, with respect to the representations
and warranties in the Merger Agreement and the related Disclosure Schedule) and
to ask all questions of the Company and its directors and executive officers
necessary in order for such Stockholder to make an informed decision to enter
into this Agreement.

                  (f) Intent to Transfer Shares. Such Stockholder has, and as of
the Closing Date, will have, no present plan or intention (an "Intention") to
sell, transfer, exchange, pledge (other than in a pre-existing bona fide margin
account) or otherwise dispose of, including a distribution by a partnership to
its partners, or a corporation to its shareholders, or any other transaction
which results in a reduction of ownership (any of the foregoing, a "Sale") of
any of the shares of Acquiror Stock issued to such Stockholder in the Merger, or
any securities that may be paid as a dividend otherwise distributed thereon or
with respect thereto, or issued or delivered in exchange or substitution
therefor or upon exercise of options held by such Stockholder. For purposes of
the preceding sentence, shares of Acquiror Stock (or the portion thereof) with
respect to which a Sale will occur prior to the Merger shall be considered to be
shares of Company Stock that are exchanged for Acquiror Stock in the Merger and
then disposed of pursuant to an Intention. A Sale of Acquiror Stock shall be
considered to have occurred pursuant to an Intention if, among other things,
such Sale occurs in a related transaction. Subject to Section 3.8, each
Stockholder (i) reserves the rights at any time after the Closing Date to
evaluate his or her investment portfolio, including shares of Acquiror Stock and
any other

                                      III-4

<PAGE>



securities issued by Acquiror, in light of new, material developments, and to
make such investment decision with respect to such securities as such
Stockholder and his or her investment advisors, if any, shall deem to be in his
or her best interests, and (ii) specifically disavows any undertaking to hold
any securities issued by Acquiror for any specific period.

                                   ARTICLE III

                                    COVENANTS

                  3.1 No Disposition or Acquisition of Shares. Each Initial
Stockholder agrees that, except as set forth in Section 3.1 of the Stockholder
Disclosure Letter, such Initial Stockholder shall not sell, transfer, pledge,
hypothecate, encumber or otherwise dispose of (except upon such Stockholder's
death), or enter into any contract, option or other arrangement or understanding
with respect to the sale, transfer, pledge, hypothecation, encumbrance or other
disposition of, any of the shares of Company Stock set forth opposite his or her
name on Schedule A-1; provided, however, that each Initial Stockholder shall
have the right to transfer such shares to a Permitted Assignee if such Permitted
Assignee becomes a party to this Agreement and agrees to be bound by the terms
hereof. Each Initial Stockholder agrees that the certificates representing the
shares of Company Stock owned by him shall bear a legend indicating that such
shares are subject to this Agreement, which legend may be removed upon
termination of this Agreement.

                  3.2 Voting Arrangements. Each of Golisano and Wayman agrees
that, except pursuant to this Agreement, he shall not grant any proxies, deposit
any shares of Company Stock into a voting trust or enter into any voting
agreement with respect to any shares of Company Stock now or hereafter owned,
beneficially or of record, by him, other than proxies to vote such shares at any
annual or special meeting of Stockholders of the Company on matters unrelated to
the matters set forth in Section 4.1 hereof.

                  3.3 Satisfaction of Conditions to the Merger. Each of Golisano
and Wayman agrees that each, in his capacity as a Stockholder, shall assist and
cooperate with the parties to the Merger Agreement in doing all things
necessary, proper or advisable under Applicable Laws as promptly as practicable
to consummate and make effective the Merger and the other Transactions and each
of them shall not take any action that would or is reasonably likely to result
in any of its representations and warranties set forth in this Agreement being
untrue as of the date made or in any of the conditions set forth in Article 6 of
the Merger Agreement not being satisfied. In addition, (i) Acquiror, Golisano
and Wayman agree that they will enter into, or, in the case of Acquiror, cause
its nominee to enter into, and, in the case of Golisano and Wayman, cause their
Affiliate which owns any Property to enter into, a purchase and sale agreement
relating to each Property reasonably satisfactory in form and substance to
Acquiror, Golisano and Wayman, for the price of $2,200,000 for the Property
located at 5 Fortune Drive, Billerica, Massachusetts, $2,400,000 for the
Property located at 96 High Street, Billerica, Massachusetts, and $2,700,000 for
the Property located at 520 Metro Park West, Rochester,

                                       III-5

<PAGE>



New York, and (ii) Acquiror, Golisano and Wayman agree that they will enter into
the Registration Rights Agreement.

                  3.4 No Solicitation. Each Stockholder agrees that he shall
not, nor shall he permit any of such Stockholder's Representatives (including,
without limitation, any investment banker, attorney or accountant retained by
such Stockholder) to, initiate, solicit or facilitate, directly or indirectly,
any inquiries or the making of any proposal with respect to an Other
Transaction, engage in any discussions or negotiations concerning, or provide to
any other person any information or data relating to, such Stockholder for the
purposes of, or otherwise cooperate in any way with or assist or participate in,
or facilitate any inquiries or the making of any proposal which constitutes, or
may reasonably be expected to lead to, a proposal to seek or effect an Other
Transaction, or agree to or endorse any Other Transaction; provided, however,
that nothing contained in this Section shall prohibit any Stockholder, if such
Stockholder is a member of Board of Directors of the Company, from making any
disclosure, in his or her capacity as a director of the Company, to other
Stockholders of the Company that, in the reasonable judgment of the Company's
Board of Directors in accordance with, and based upon the written advice of,
outside counsel, is required under Applicable Law. Each Stockholder shall
promptly advise Acquiror of, and communicate the material terms of, any proposal
such Stockholder may receive, or any inquiries such Stockholder receives which
may reasonably be expected to lead to such a proposal relating to an Other
Transaction, and the identity of the Person making it. Each Stockholder shall
further advise Acquiror of the status and changes in the material terms of any
such proposal or inquiry (or any amendment to any of them). During the term of
this Agreement, each Stockholder agrees that he shall not enter into any
agreement oral or written, and whether or not legally binding, with any Person
that provides for, or in any way facilitates, an Other Transaction, or affects
any other obligation of the other Stockholders under this Agreement.

                  3.5 Standstill. Golisano agrees that, (i) from the date hereof
until the Closing Date and (ii) from and after the Closing Date for so long as
he shall be a Restricted Stockholder, he shall not, and shall use his best
efforts to cause his Affiliates not to, without the prior written consent of the
board of directors of Acquiror, (A) in any manner acquire, agree to acquire or
make any proposal to acquire, directly or indirectly, any Equity Securities of
Acquiror or any rights or options to acquire such Equity Securities (other than
the shares of Acquiror Stock received by him in the Merger), (B) propose to
enter into, directly or indirectly, a merger or other business combination
involving Acquiror or propose to purchase, directly or indirectly, a material
portion of the assets of Acquiror, (C) make, or in any way participate, directly
or indirectly, in, any "solicitation" of "proxies" (as such terms are used in
Regulation 14A under the Exchange Act) to vote or consent or seek to advise or
influence any Person with respect to the voting of, or granting of a consent
with respect to, any Voting Securities of Acquiror, (D) form, join or in any way
participate in a "group" (within the meaning of Section 13(d)(3) of the Exchange
Act) for the purpose of acquiring, holding voting or disposing of any Equity
Securities of Acquiror, (E) otherwise act, alone or in concert with others, to
seek to control or influence in any public manner or public forum the management
or policies of Acquiror; provided, however, that the foregoing shall not limit
the ability to vote any shares of any Equity Securities

                                       III-6

<PAGE>



of Acquiror, (F) disclose any intention, plan or arrangement inconsistent with
the foregoing, (G) advise, assist (including by knowingly providing or arranging
financing for that purpose) or encourage any other Person in connection with any
of the foregoing or (H) take any action which might require Acquiror to make a
public announcement regarding the possibility of a transaction between Golisano
and Acquiror (including any of their respective Affiliates).

                  3.6      Non-Competition.

                  (a) Except with the prior written consent of Acquiror, for a
period of five years from the Closing Date or the date of the closing of the
Offer, each of Golisano and Wayman shall not disclose to others or use for his
or others' benefit confidential information related to the Company or Acquiror
and its Subsidiaries, including the names of customers, the contact persons at
customers, pricing, the software programs utilized by the Company or Acquiror
and its Subsidiaries in the operation of its business and all other information
material to the operation, management, marketing or financing of the Company,
Acquiror and its Subsidiaries which is not known or generally available to the
public or competitors in the records management or records storage industries.

The confidentiality obligations of this Section shall not apply to information:

                  (i) which is required to be disclosed by judicial or
administrative process or order, or by other requirements of law;

                  (ii) which is or becomes generally available to the public
other than as a result of a breach of this Section;

                  (iii) which is received from a third party who obtained such
information other than under an obligation of confidentiality; or

                  (iv) which Acquiror discloses on a nonconfidential basis or
otherwise makes available to the general public or the trade.

                  (b) Each of the Golisano and Wayman agrees that he shall not,
for a period of five years from the Closing Date or from the date of the closing
of the Offer, directly or indirectly own, manage, engage in, participate in,
provide advice to, be employed by or have a financial interest in, any
enterprise which provides records management or records storage services to
business facilities located in any jurisdiction in which Acquiror or the Company
operates.

         This Section 3.6(b) shall not prohibit either Golisano or Wayman from
acquiring up to five percent (5%) of any class of securities registered pursuant
to the Exchange Act of any corporation which may engage in the records
management storage service business in direct competition with the business of
Acquiror within the geographical areas set forth in this Section 3.6.

                                      III-7

<PAGE>



                  (c) Each of Golisano and Wayman acknowledges that it has
carefully read all the terms herein stated and agrees that the same are
necessary for the reasonable and proper protection of the value of the Company;
and that each and every covenant is reasonable with respect to such matter,
length of time, and the geographical areas described; and that irrespective of
all other conditions, the covenants and restrictions hereinabove provided shall
be operative during the full period and throughout the geographical area
described. In the event any court finds any such restraint or limitation to be
unreasonable, then it is the intent of the parties that such court should
determine the maximum restraint or limitation which is reasonable and
enforcement will be of that restraint or limitation.

                  (d) Each of Golisano and Wayman acknowledges that confidential
information in his possession related to the Company has particular value, the
loss of confidentiality of which by communication to unauthorized persons cannot
be reasonably or adequately compensated for by damages alone. Moreover, each of
Golisano and Wayman agrees that any breach of paragraphs (a) and (b) of this
Section 3.6 would give rise to damages which would be difficult to calculate.
Therefore, the parties hereby agree that in the event of a breach of any of the
terms and conditions of this Section 3.6, Acquiror shall be entitled to
equitable relief by way of an injunction. This Section 3.6 shall not be
construed as a limitation upon Acquiror's remedies for such breach.

                  (e) The restrictions contained in this Section 3.6 shall be
broadly construed by any court having jurisdiction of the matter in order to
protect Acquiror to the maximum degree possible.

                  3.7      Tender Offer; Commitment to Sell.

                  (a) If Acquiror terminates the Merger Agreement pursuant to
Section 7.1(d) thereof (other than a termination by Acquiror pursuant to Section
7.1(d)(ii)(B)(II) unless the reason for the failure to consummate the Merger
prior to the Termination Date is due to any breach by the Company of its
covenants therein or the failure of the representations and warranties of the
Company to be true and correct in all material respects), it shall have the
right, but not the obligation, to commence an offer (the "Offer") to purchase
all of the outstanding Shares at a per share purchase price (the "Offer
Consideration") equal to the Merger Consideration (assuming for such purposes
that the commencement of the Offer would constitute a Change of Control under
the Option Plans and, as a consequence thereof, there would be an acceleration
of the Option Securities as of the date of commencement of the Offer, as set
forth in Section 3.13(b) of the Disclosure Schedule). Shares tendered in the
Offer shall be free and clear of all Liens. The Offer shall comply in all
material respects with Applicable Law.

                  (b) Each of Golisano and Wayman hereby agrees that they will
irrevocably tender their shares of Company Stock identified on Schedule A-1
hereto in any such Offer commenced by Acquiror and, in connection therewith,
transfer to Acquiror all of the right, title and interest of each of Golisano
and Wayman in and to such shares, free and clear of all Liens.


                                       III-8

<PAGE>



                  (c) All of the representations, warranties and covenants made
by the Company in the Merger Agreement shall be deemed made in connection with
the Offer by each Stockholder who tenders shares in the Offer, which
representations, warranties and covenants shall survive for a period of one year
after the closing of the Offer. Any claim for indemnification in respect of
breaches of such representations, warranties and covenants shall be conducted in
accordance with the provisions of Article 8 of the Merger Agreement and Article
5 of this Agreement (except that there will be no Escrow Indemnity Fund).

                  (d) The closing of the Offer shall take place in accordance
with the instructions set forth in the Offer. At such closing, (A) Acquiror
shall make payment of the Offer Consideration to each Stockholder who tenders
their shares in the Offer in shares of Acquiror Stock, which shares shall be
duly authorized, validly issued, fully paid and nonassessable, and the cash
portion of the Exchange Merger Consideration and cash in lieu of fractional
shares, (B) each of Golisano and Wayman shall deliver to Buyer evidence
reasonably satisfactory to Buyer and its counsel that all necessary
authorizations, consents, orders, waivers and approvals have been obtained to
vest in Buyer all of the right, title and interest of the Shares being
transferred to Buyer by them, and (C) each Stockholder who tenders Shares in the
Offer shall deliver to Acquiror the Certificates representing such Shares duly
endorsed for transfer to Acquiror or with stock powers duly executed by such
Stockholder and otherwise in a form and at the time which complies with the
terms of the Offer.

                  (e) It is the understanding of Acquiror, and each of Golisano
and Wayman hereby represents, that, in the event of an acquisition of shares of
Acquiror Stock in the Offer, each of Golisano and/or Wayman will be acquiring
the shares of Acquiror Stock to be acquired by him through the Offer for his own
account for investment with no intention of presently distributing or reselling
the same, subject, nevertheless, to his right to dispose of such Shares, or any
part of any thereof held by him, if at some future time in his sole discretion
he deems it advisable so to do. Each of Golisano and Wayman hereby agrees that
he will not sell, transfer or otherwise dispose of any such shares of Acquiror
Stock in violation of the Securities Act, and that such shares of Acquiror Stock
may contain a legend, reasonably satisfactory to Acquiror, referring to the
provisions of this Section. Each of Golisano and Wayman understands that the
Company is not and will not be required to file a registration statement under
the Securities Act in connection with any sale, transfer or other disposition of
shares of Acquiror Stock which may be acquired by either Golisano or Wayman
pursuant to the Offer.

                  (f) The undertakings in this Section 3.7 shall terminate upon
the earlier of (i) the Effective Time, (ii) the termination of the Merger
Agreement in accordance with Section 7.1 thereof (other than a termination which
results in Acquiror having the right to make the Offer in accordance with this
Section 3.7) or (iii) six months after a termination which results in Acquiror
having the right to make the Offer in accordance with this Section 3.7 (provided
that on or before thirty days after such termination Acquiror shall have
provided notice to Golisano of its intention to commence the Offer).


                                      III-9

<PAGE>



                  3.8 Post-Closing Transfer Restrictions. In the event the
Merger is consummated as an Alternative Transaction, each of the Stockholders
agrees that, from and after the Closing Date until the one-year anniversary
thereof, such Stockholder shall not sell, transfer, pledge, encumber or
otherwise dispose of, including through any "short sale" or derivative
transactions (collectively "Transfer"), any shares of Acquiror Stock received by
such Stockholder as a result of the Merger if, after giving effect to such
Transfer, the aggregate number of shares of Acquiror Stock received in the
Merger by all Stockholders and not Transferred would be less than a number of
shares of Acquiror Stock having a value, as of the date of the Merger, of less
than fifty percent (50%) of the value of all of the formerly outstanding Company
Stock as of the same date. For purposes of the preceding computation, shares of
Company Stock surrendered by dissenters or exchanged for cash in lieu of
fractional shares of Acquiror Stock will be treated as outstanding Company Stock
on the date of the Merger that has subsequently been Transferred, and all shares
of Company Stock and all shares of Acquiror Stock held by the Stockholders and
Transferred prior or subsequent to the Merger will be included in the
computation.

                  3.9      [Intentionally Omitted.]








                                   ARTICLE IV

                               PROXY; CONVERSION;
                           ELECTIONS; WAIVER OF RIGHTS

                  4.1 Proxy. Each of Golisano and Wayman hereby agrees that, at
any meeting of the stockholders of the Company, however called, and at every
adjournment thereof, and in any action by written consent of the stockholders of
the Company, to (a) vote all of the shares of Company Stock then owned,
beneficially or of record, by him in favor of the adoption of the Merger
Agreement as in effect on the date hereof (as such agreement may be amended (1)
as contemplated by Section 7.3 of the Merger Agreement or (2) with the consent
of such Stockholder) and each of the other transactions contemplated thereby and
any action required in furtherance thereof, (b) vote such shares against any
action or agreement that would result in a breach in any material respect of any
covenant, representation or warranty or any other obligation of the Company
under the Merger Agreement, and (c) vote such shares against any Other
Transaction or any other action or agreement that, directly or indirectly, is
inconsistent with or that would, or is reasonably likely to, directly or
indirectly, impede, interfere with or attempt to discourage the Merger or any
other transaction contemplated by the Merger Agreement, including, but not
limited to (i) any extraordinary corporate transaction (other than

                                      III-10

<PAGE>



the Merger on the terms set forth in the Merger Agreement), such as a merger,
consolidation, business combination, reorganization recapitalization or
liquidation involving the Company, (ii) a sale or transfer of a material amount
of assets of the Company, or (iii) any material change in the Company's
corporate structure or business; provided, however, that, if either Golisano or
Wayman is a member of the Board of Directors of the Company, nothing herein
shall be construed to obligate such Stockholder or representative to act in his
capacity as a director in any manner which may conflict with such Person's
fiduciary duties as a director of the Company.

                  In furtherance of the foregoing, (i) each of Golisano and
Wayman hereby appoints Acquiror and the proper officers of Acquiror, and each of
them, with full power of substitution in the premises, its proxies to vote all
his shares of Company Capital Stock at any meeting, general or special, of the
Stockholders of the Company, and to execute one or more written consents or
other instruments from time to time in order to take such action without the
necessity of a meeting of the Stockholders of the Company, in accordance with
the provisions of the preceding paragraph and (ii) Acquiror hereby agrees to
vote such shares or execute written consents or other instruments in accordance
with the provisions of the preceding paragraph.

                  The proxy and power of attorney granted herein shall be
irrevocable during the term of this Agreement, shall be deemed to be coupled
with an interest and shall revoke all prior proxies granted by such Golisano and
Wayman. Each of Golisano and Wayman shall not grant any proxy to any person
which conflicts with the proxy granted herein, and any attempt to do so shall be
void. The power of attorney granted herein is a durable power of attorney and
shall survive the disability or incompetence of such Stockholder.

                  4.2 Appraisal Rights. Each of Golisano and Wayman hereby
waives his rights to appraisal under Section 262 of the DGCL with respect to any
shares of Company Stock owned by him in connection with the transactions
contemplated by the Merger Agreement. Each of Golisano and Wayman hereby agrees
that he will not in any way attempt to influence, encourage or persuade any
Person who beneficially owns any Company Stock to exercise any rights to
appraisal such Person may have pursuant to Section 262 of the DGCL in connection
with said transactions.

                  4.3 Waiver of Certain Rights. Each Initial Stockholder hereby
waives and agrees not to assert any claims or rights it may have against any
officer or director of the Company relating to or arising out of actions or
omissions occurring at or prior to the Effective Time or the closing of the
Offer, as the case may be, including, without limitation, in respect of approval
or adoption of the Merger Agreement or the consummation of the Merger or the
other transactions contemplated thereby.






                                      III-11

<PAGE>



                                    ARTICLE V

                                 INDEMNIFICATION

                  5.1 Indemnification in the Event of the Offer. Each
Stockholder agrees that the indemnification provisions set forth in Article 8 of
the Merger Agreement shall be applicable in the event Acquiror consummates the
Offer pursuant to Section 3.7 hereof; provided, however, that only Stockholders
who tender Shares in the Offer shall be responsible for such indemnification and
each such Stockholder shall only be responsible for such Stockholder's
Proportionate Share of any claim. In addition, (i) the Escrow Indemnity Period
shall terminate on the first anniversary of the closing of the Offer and the
Closing Date shall be deemed to be the closing of the Offer, (ii) the amount of
Acquiror Stock received by each Stockholder who tenders Shares in the Offer
shall be adjusted to reflect the escrow to be established, and (iii) each
Stockholder will agree to execute the Escrow Agreement with such changes
therein, if any, as are necessary to reflect the differences between the Merger
and the Offer.

                  5.2 Exclusive Remedy. Except as otherwise provided in Article
8 and Section 9.8 of the Merger Agreement, the indemnification provided in this
Article shall be the sole and exclusive post-Closing remedy available to
Acquiror against the Stockholders for any Claim under this Agreement.

                                   ARTICLE VI

                                  MISCELLANEOUS

                  6.1 Termination. This Agreement shall terminate upon the
earlier to occur of (i) the mutual consent of Acquiror and all of the
Stockholders, (ii) one year after the termination of the Merger Agreement prior
to the consummation of the Merger and (iii) the tenth anniversary of the Closing
Date.

                  6.2 Amendment. This Agreement may be amended only by a written
instrument executed by the parties or their respective successors or assigns.

                  6.3 Notices. Notices, requests, permissions, waivers and other
communications hereunder shall be in writing and shall be deemed to have been
duly given if signed by the respective persons giving them (in the case of any
corporation the signature shall be by an officer thereof) and delivered by hand,
deposited in the United States mail (registered or certified, return receipt
requested), properly addressed and postage prepaid, or delivered by telecopy:






                                      III-12

<PAGE>



                  If to Acquiror, to:

                  Iron Mountain Incorporated
                  745 Atlantic Avenue, 10th Floor
                  Boston, Massachusetts 02111
                  Telephone:        (617) 357-4455
                  Telecopy:         (617) 350-7881
                  Attention:        Chairman of the Board

                  with a copy to:

                  Sullivan & Worcester LLP
                  One Post Office Square
                  Boston, Massachusetts 02109
                  Telephone:        (617) 338-2800
                  Telecopy:         (617) 338-2880
                  Attention:        William J. Curry, Esq.

                  If to the Stockholders, to:

                  c/o B. Thomas Golisano
                  911 Panorama Trail South
                  Rochester, NY 14625
                  Telephone:        (716) 385-6666
                  Telecopy:         (716) 383-3428

                  with a copy to:

                  Woods, Oviatt, Gilman, Sturman & Clarke LLP
                  44 Exchange Street
                  Rochester, NY 14614
                  Telephone:  (716) 987-2821
                  Telecopy:   (716) 454-3968
                  Attention:  Harry P. Messina, Jr., Esq.

                  6.4 Counterparts. This Agreement may be executed in one or
more counterparts and each counterpart shall be deemed to be an original, but
all of which shall constitute one and the same original.

                  6.5 Applicable Law. This Agreement shall be governed by, and
construed in accordance with the laws of the State of Delaware without reference
to choice of law principles, including all matters of construction, validity and
performance.


                                      III-13

<PAGE>



                  6.6 Severability; Enforcement. The invalidity of any portion
hereof shall not affect the validity, force or effect of the remaining portions
hereof. If it is ever held that any restriction hereunder is too broad to permit
enforcement of such restriction to its fullest extent, each party agrees that a
court of competent jurisdiction may enforce such restriction to the maximum
extent permitted by law, and each party hereby consents and agrees that such
scope may be judicially modified accordingly in any proceeding brought to
enforce such restriction. In furtherance of the foregoing, if any court
construes any of the provisions of Section 3.6, or any part thereof, to be
unreasonable because of the duration of such provision or the geographic scope
thereof, such court shall have the power to reduce the duration or restrict the
geographic scope of such provision and to enforce such provision as so reduced
or restricted.

                  6.7 Further Assurances. Each party hereto shall execute and
deliver such additional documents as may be necessary or desirable to consummate
the transactions contemplated by this Agreement.

                  6.8 Additional Stockholders; Parties in Interest; Assignment.
The parties hereto agree that, from time to time, any and all Additional
Stockholders of the Company may be added as parties hereto by (i) approving a
resolution or taking such other action at the Special Meeting as Acquiror and
the Company may agree upon or (ii) executing a counterpart of this Agreement or
an agreement by which such stockholder agrees to join and to be bound hereby,
and without in either case further action by any party hereto or thereto.
Neither this Agreement nor any of the rights, interest or obligations hereunder
shall be assigned by any of the parties hereto without the prior written consent
of the other parties. Notwithstanding the foregoing, for the purposes of
Sections 3.5 and 3.6, the term Acquiror shall include any Entity controlling,
controlled by or under common control with Acquiror, any successor, by operation
of law or otherwise of Acquiror, or any entity controlling, controlled by or
under common control with Acquiror, and any assignee of Acquiror.

                  6.9 Entire Agreement. This Agreement and the Merger Agreement
and the Collateral Documents contain the entire understanding of the parties
hereto and thereto with respect to the subject matter contained herein and
therein, and supersede and cancel all prior agreements, negotiations,
correspondence, undertakings and communications of the parties, oral or written,
respecting such subject matter. There are no restrictions, promises,
representations, warranties, agreements or undertakings of any party hereto or
to the Merger Agreement or any of the Collateral Documents with respect to the
transactions contemplated by this Agreement and the Merger Agreement and the
Collateral Documents other than those set forth herein or therein or made
hereunder or thereunder.

                  6.10 Specific Performance. The parties hereto agree that the
remedy at law for any breach of this Agreement will be inadequate and that any
party by whom this Agreement is enforceable shall be entitled to specific
performance in addition to any other appropriate relief or remedy. Such party
may, in its sole discretion, apply to a court of competent jurisdiction for
specific performance or injunctive or such other relief as such court may deem
just and proper

                                      III-14

<PAGE>



in order to enforce this Agreement or prevent any violation hereof and, to the
extent permitted by applicable law, each party waives any objection to the
imposition of such relief.

                  6.11 Headings; References. The section and paragraph headings
contained in this Agreement are for reference purposes only and shall not affect
in any way the meaning or interpretation of this Agreement. All references
herein to "Sections" or "Exhibits" shall be deemed to be references to Articles
or Sections hereof or Exhibits hereto unless otherwise indicated.


                     [Signatures appear on following page.]

                                     III-15

<PAGE>




                  IN WITNESS WHEREOF, each of the parties hereto had caused this
Agreement to be duly executed and delivered as of the day and year first above
written.

                             IRON MOUNTAIN INCORPORATED


                             By: /s/ David S. Wendell
                             ----------------------------------------------
                                 Name: David S. Wendell
                                 Title: President and Chief Operating Officer

                             /s/ B. Thomas Golisano
                             ----------------------------------------------
                             B. Thomas Golisano

                             /s/ James B. Wayman, Jr.
                             ----------------------------------------------
                             James B. Wayman, in his individual
                             capacity and as custodian for
                             Alexander B. Wayman and Catherine
                             Lia Wayman



                      [Additional signature pages follow.]


                                     III-16

<PAGE>




                      -----------------------------------------------
                      Roselee Wayman

                      -----------------------------------------------
                      John Glynn

                       /s/ Harvey H. Bundy III
                      ----------------------------------------------
                      Harvey H. Bundy III, in his capacities as Trustee for each
                      of the Clark H. Bundy 1992 Trust, Elizabeth Lowell Bundy
                      1996 Trust, H. Hollister Bundy III 1990 Trust and Harvey
                      H. Bundy III 1992 Trust

                       /s/ Blakely F. Bundy
                      ----------------------------------------------
                      Blakely F. Bundy , in her capacities as Trustee for the
                      Blakely F. Bundy 1992 Trust and asCustodian for Reed F.
                      Bundy

                       /s/ David F. Bellet
                      ----------------------------------------------
                      David F. Bellet

                       /s/ Hugh J. Rundle
                      ----------------------------------------------
                      Hugh J. Rundle

                      -----------------------------------------------
                      Paul R. Altavena

                       /s/ Charles T. Graham
                      ----------------------------------------------
                      Charles T. Graham

                                      III-17

<PAGE>

                                                                        ANNEX IV

                            FORM OF ESCROW AGREEMENT


         This ESCROW AGREEMENT (this "Agreement") is entered into as of the
_____ day of ________, 1997, by and among Iron Mountain Incorporated, a Delaware
corporation ("Acquiror"), Safesite Records Management Corporation, a Delaware
corporation (the "Company"), B. Thomas Golisano, an individual residing at 911
Panorama Trail South, Rochester, NY 14625 (in his capacity as agent for the
Stockholders, the "Agent"), as agent for the stockholders of the Company (the
"Stockholders"), and State Street Bank and Trust Company, as Escrow Agent (the
"Escrow Agent").

                              W I T N E S S E T H :

         WHEREAS, Acquiror and the Company entered into that certain Agreement
and Plan of Merger dated as of February 19, 1997 (the "Merger Agreement"), an
executed copy of which has been provided to the Escrow Agent, pursuant to which
a wholly owned subsidiary of Acquiror will merge with and into the Company and
the Company will become a wholly owned subsidiary of Acquiror (the "Merger"),
and pursuant to which $3,000,000 was allocated to indemnify Acquiror for certain
matters relating to the Merger Agreement, all as is more fully set forth in the
Merger Agreement;

         WHEREAS, this Agreement is being entered into pursuant to Article 8 of
the Merger Agreement; and

         WHEREAS, in accordance with and pursuant to Article 8 of the Merger
Agreement, the Agent has been appointed as agent and attorney-in-fact, with full
power of substitution, to take all actions called for by Article 8 of the Merger
Agreement, including, without limitation, the execution of this Agreement, and
this Agreement;

         NOW, THEREFORE, in consideration of the foregoing premises and the
agreements set forth below, the receipt and adequacy of which are hereby
acknowledged, the parties hereto, intending to be legally bound, agree as
follows:


                                    ARTICLE 1

                             ESCROW INDEMNITY FUNDS

         1.1 Delivery. Upon consummation of the Merger, Acquiror will deposit
with the Escrow Agent the aggregate sum of Three Million Dollars ($3,000,000) in
immediately available funds (together with all interest accrued thereon, the
"Escrow Indemnity Funds", which funds shall be held in an account named "Iron
Mountain Incorporated - Escrow Indemnity Funds" or in an account having such
other similar designation.)


                                      IV-1
<PAGE>


         1.2 Receipt. The Escrow Agent agrees to hold and disburse the Escrow
Indemnity Funds (together with interest earned thereon) solely in accordance
with the terms and conditions of this Agreement, pursuant to the written
direction of Acquiror, and for the uses and purposes stated herein. The Escrow
Agent shall, upon receipt of the Escrow Indemnity Funds, issue written
acknowledgment to Acquiror and the Agent of receipt thereof.

         1.3 Investment and Income. The Escrow Agent shall, as soon as
reasonably practical and from time to time during the term hereof, invest the
Escrow Indemnity Funds in (i) direct obligations of, or obligations fully
guaranteed by, the United States of America or any agency thereof, (ii)
certificates of deposit issued by commercial banks having a combined capital,
surplus and undivided profits of not less than $500,000,000, (iii) money market
mutual funds authorized solely to invest in any of the above, (iv) other
investments of equal or greater security and liquidity, or (v) such other
investments as Acquiror and the Agent may from time to time direct in writing.

                                    ARTICLE 2

              PROCEDURES FOR DISBURSEMENT OF ESCROW INDEMNITY FUNDS

         2.1 Purpose. The Escrow Indemnity Funds shall be held by the Escrow
Agent to secure the indemnification obligations to Acquiror under the Merger
Agreement and shall be held and released in accordance with the provisions of
this Agreement. The Escrow Agent agrees to hold, disburse and invest the Escrow
Indemnity Funds solely in accordance with the terms and conditions of this
Agreement and for the uses and purposes stated herein.

         2.2 Disbursement.

                  (a) If at any time after the consummation of the Merger and
prior to the termination of this Agreement, the Escrow Agent receives written
instructions in accordance with the terms of Section 2.4 hereof from Acquiror to
make a payment to Acquiror, then the Escrow Agent shall make payments out of the
Escrow Indemnity Funds to Acquiror by transferring cash to Acquiror, in
accordance with such instructions, unless the Escrow Indemnity Funds shall be
insufficient to comply with such instructions, in which case the Escrow Agent
shall pay the entire Escrow Indemnity Funds to Acquiror and shall advise
Acquiror and the Agent in writing of the amount of such payment. In no event
shall the Escrow Agent pay more than $3,000,000 to Acquiror from the Escrow
Indemnity Funds.

                  (b) The Escrow Agent may make any payments out of the Escrow
Indemnity Funds that may at the time be permitted to be made under the
provisions of Section 2.4 below, and shall make all such payments that at the
time are required to be made under such provisions or are jointly requested in
writing by Acquiror and the Agent.

                  (c) On the date which is ten (10) days after the expiration of
one year from the date of the consummation of the Merger (the "Escrow Indemnity
Period"), or the next business day if such date is not a business day (the
"Payment Date"), the Escrow Agent shall mail a check (or, pursuant to
instructions reasonably satisfactory to the Escrow Agent, make a wire transfer)
to each Stockholder in the respective amount and at the respective address

                                      IV-2
<PAGE>


contained in written instructions delivered to the Escrow Agent by Acquiror at 
such time, less all portions thereof, if any,

         (i)  paid to Acquiror pursuant to subparagraphs (a) and (b) above or
              pursuant to Section 6.13 hereof, and

         (ii) which are the subject of Unresolved Claims (as hereinafter
              defined).

The Escrow Agent shall retain the portion of the Escrow Indemnity Funds which
relates to all Unresolved Claims until resolution of such Unresolved Claims in
accordance with the terms hereof.

         2.3 Unresolved Claims. The term "Unresolved Claims" shall mean any
claim or request made pursuant to the Merger Agreement against the Escrow
Indemnity Funds in accordance with the Merger Agreement and Section 2.4 below,
until such time as such claim or request has been paid in full or otherwise
fully settled, compromised or adjusted by Acquiror, the Agent and the Escrow
Agent or by a final order of a court of competent jurisdiction resolving such
claim, from which no appeal is or can be taken.

         2.4 Notice of Request; Dispute Notice. If at any time during the term
of this Agreement, Acquiror believes that it is entitled to any portion of the
Escrow Indemnity Funds, then Acquiror shall furnish to the Escrow Agent (with a
simultaneous copy to the Agent), a notice (the "Indemnity Notice of Request")
setting forth the amount to which Acquiror believes it is entitled and the
reasons for such belief. If the Escrow Agent does not receive, within fifteen
(15) business days after receipt of the Indemnity Notice of Request, a notice
from the Agent (the "Indemnity Dispute Notice") with a simultaneous copy to
Acquiror that a dispute (the "Indemnity Dispute") exists relating to Acquiror's
right to that portion of the Escrow Indemnity Funds claimed in the Indemnity
Notice of Request, the Escrow Agent shall, immediately after such fifteen
business day period, pay the portion of the Escrow Indemnity Funds claimed in
the Indemnity Notice of Request to Acquiror.

         In the event the Escrow Agent receives an Indemnity Dispute Notice that
an Indemnity Dispute exists, the Escrow Agent shall retain custody of that
portion of the Escrow Indemnity Funds which relates to the Unresolved Claim
until the first to occur of the following events:

                  (a) Receipt by the Escrow Agent of a notice ("Indemnity
         Settlement Notice") signed by Acquiror and the Agent that the Indemnity
         Dispute has been resolved, said notice to contain instructions to
         Escrow Agent regarding delivery of that portion of the Escrow Indemnity
         Funds which relates to the Unresolved Claim; or

                  (b) Receipt by Escrow Agent of a final order of a court of
         competent jurisdiction (the "Indemnity Award") resolving the Indemnity
         Dispute and directing the disposition of that portion of the Escrow
         Indemnity Funds;


                                      IV-3
<PAGE>


after which Escrow Agent shall promptly pay that portion of the Escrow Indemnity
Funds which relates to the Indemnity Unresolved Claim in accordance with the
Indemnity Settlement Notice or the Indemnity Award.


                                    ARTICLE 3

                                  ESCROW AGENT

         3.1 Appointment. Acquiror, the Company and the Agent hereby appoint the
Escrow Agent to serve hereunder and the Escrow Agent hereby accepts such
appointment and agrees to perform all duties which are expressly set forth in
this Agreement.

         3.2 Compensation. The Escrow Agent shall be entitled to compensation
for legal fees incurred in connection with the preparation of this Agreement and
for its services hereunder in accordance with the attached fee schedule, which
may be subject to change hereafter on an annual basis, upon notice to Acquiror
and the Agent. Compensation of the Escrow Agent and all reasonable expenses of
the Escrow Agent (including all reasonable attorneys' fees of those attorneys
not regularly in its employ) in connection with the performance of its services
hereunder shall be borne by Acquiror. The Escrow Agent shall be entitled to
reimbursement on demand for all reasonable out-of-pocket expenses incurred in
connection with the administration of this Agreement or the escrow created
hereby which are in excess of its compensation for normal services hereunder,
including without limitation, payment of any reasonable legal fees and expenses
reasonably incurred by the Escrow Agent in connection with the resolution of any
claim in any party hereunder.

         3.3 Indemnification. Notwithstanding anything to the contrary in the
foregoing, Acquiror and the Agent will hold the Escrow Agent, its directors,
officers and employees harmless and Acquiror will indemnify the Escrow Agent in
connection with any and all third party claims, losses, judgments or costs,
regardless of their nature, arising out of or because of this Agreement, except
such as may arise because of the Escrow Agent's gross negligence or willful
misconduct or breach of this Agreement (including, without limitation, Article 2
hereof). Acquiror and the Agent also exonerate said Escrow Agent from, and
Acquiror shall indemnify the Escrow Agent in connection with, any liability in
connection with this Agreement or with the administration of its duties
hereunder, including but not limited to reasonable legal fees and other
reasonable costs and expenses of defending or preparing to defend against any
claim or liability except such as may arise because of the Escrow Agent's gross
negligence or willful misconduct in performing its specified duties hereunder or
breach of this Agreement (including, without limitation, Article 2 hereof).
Subject to Section 6.13, nothing in this Section 3.3 shall constitute a waiver
of any claim which Acquiror and the Agent may have against the other for
contribution arising from their joint obligations to hold the Escrow Agent
harmless hereunder. Anything in this Agreement to the contrary notwithstanding,
in no event shall the Escrow Agent be liable for special, indirect or
consequential loss or damage of any kind whatsoever (including but not limited
to lost profits), even if the Escrow Agent has been advised of the likelihood of
such loss or damage and regardless of the form of action. The Escrow Agent shall
not be obligated to take any legal or other action hereunder which might in its
judgment involve any expense or liability unless it shall have been furnished
with acceptable indemnification.

                                      IV-4
<PAGE>


         3.4 Resignation; Removal. The Escrow Agent may resign at any time upon
giving the parties hereto 30 days' prior written notice. Acquiror and the Agent
may also, at any time, mutually agree in a writing signed by Acquiror and the
Agent to remove the Escrow Agent upon 30 days' prior written notice. In either
event, the successor Escrow Agent shall be such person, firm or corporation as
shall be mutually selected by Acquiror and the Agent. It is understood and
agreed that such resignation or removal shall not be effective until a successor
agrees to act hereunder by signing a copy hereof; provided, however, if no
successor is appointed and acting hereunder within thirty (30) days after such
notice is given, the Escrow Agent may pay and deliver the Escrow Indemnity Funds
into a court of competent jurisdiction.

                                    ARTICLE 4

                           LIABILITIES OF ESCROW AGENT

         4.1  Limitations.

                  (a) The Escrow Agent shall be liable only to accept, hold and
deliver the Escrow Indemnity Funds in accordance with the provisions of this
Agreement and any amendments hereto or other written instructions executed by
Acquiror and the Agent; provided, however, that the Escrow Agent shall not incur
any liability with respect to (a) any action taken or omitted in good faith and
with due care upon the reasonable advice of its counsel, including in-house
counsel, given with respect to any questions relating to the duties and
responsibilities of the Escrow Agent under this Agreement, or (b) any action
taken or omitted in reliance upon any instrument which the Escrow Agent shall in
good faith and with due care believes to be genuine (including the execution of
such instrument, the identity or authority of any person executing such
instrument, its validity and effectiveness, and the truth and accuracy of any
information contained therein), to have been signed by a proper person or
persons and to conform to the provisions of this Agreement.

                  (b) The Escrow Agent does not have any interest in the Escrow
Indemnity Funds deposited hereunder but is serving as escrow holder only and
having only possession thereof. The Agent, on behalf of the Stockholders,
covenants and agrees that he will pay or reimburse the Escrow Agent upon request
for any transfer taxes, to the extent that any exist, relating to the Escrow
Indemnity Funds incurred in connection herewith. Any payments or income from the
escrow account shall be subject to withholding regulations then in force with
respect to United States taxes. The Agent, on behalf of the Stockholders, agrees
to assume any and all obligations imposed now or hereafter by any applicable tax
law with respect to the payment of Escrow Indemnity Funds under this Agreement
to the Stockholders, and to indemnify and hold the Escrow Agent harmless from
and against any taxes, additions for late payment, interest, penalties and other
expenses, that may be assessed against the Escrow Agent in any such payment or
other activities under this Agreement. Acquiror and the Agent undertake to
instruct the Escrow Agent in writing with respect to the Escrow Agent's
responsibility for withholding and other taxes, assessments or other
governmental charges, certifications and governmental reporting in connection
with its acting as Escrow Agent under this Agreement. The Agent agrees to hold
the Escrow Agent harmless and the Agent agrees to indemnify the Escrow Agent for
any liability on account of taxes, assessments or other governmental charges,
including without limitation the withholding or deduction or the failure to
withhold or deduct the

                                      IV-5
<PAGE>


same, and any liability for failure to obtain proper certifications or to
properly report to governmental authorities, to which the Escrow Agent may be or
become subject in connection with any payment to the Stockholders under this
Agreement, including costs and expenses (including reasonable legal fees and
expenses), interest and penalties. The parties hereto agree that, for tax
reporting purposes, all interest or other income earned in the Escrow Indemnity
Funds shall be allocable to the Stockholders.

         Acquiror agrees to assume any and all obligations imposed now or
hereafter by any applicable tax law with respect to the payment of Escrow
Indemnity Funds under this Agreement to Acquiror, and to indemnify and hold the
Escrow Agent harmless from and against any taxes, additions for late payment,
interest, penalties and other expenses, that may be assessed against the Escrow
Agent in any such payment or other activities under this Agreement. Acquiror
agrees to hold the Escrow Agent harmless and Acquiror agrees to indemnify the
Escrow Agent for any liability on account of taxes, assessments or other
governmental charges, including without limitation the withholding or deduction
or the failure to withhold or deduct the same, and any liability for failure to
obtain proper certifications or to properly report to governmental authorities,
to which the Escrow Agent may be or become subject in connection with any
payment to Acquiror under this Agreement or which otherwise arises out of this
Agreement, except as provided in the preceding paragraph, including costs and
expenses (including reasonable legal fees and expenses), interest and penalties.

         The Escrow Agent shall have no more or less responsibility or liability
on account of any action or omission of any book-entry depository or subescrow
agent employed by the Escrow Agent than any such book-entry depository or
subescrow agent has to the Escrow Agent, except to the extent that such action
or omission of any book-entry depository or subescrow agent was caused by the
Escrow Agent's own gross negligence, bad faith or willful misconduct.

         No distributions will be made unless Acquiror and the Agent provide the
Escrow Agent with an appropriate W-9 form for tax identification number
certification or non-resident alien certification prior to distribution. This
Section 4.1(b) and Section 3.3 hereof shall survive any termination of this
Agreement or the resignation or removal of the Escrow Agent.

         4.2 Collateral Agreements. Other than this Agreement, which shall be
controlling in regards to the Escrow Indemnity Funds, the Escrow Agent shall not
be bound in any way by any contract or agreement between other parties hereto,
including the Merger Agreement and the Stockholders' Agreement, whether or not
it has knowledge of any such contract or agreement or of its terms or
conditions.

                                    ARTICLE 5

                                   TERMINATION

         This Agreement shall be terminated upon the earliest to occur of (a)
disbursement or release of the Escrow Indemnity Funds by the Escrow Agent as
provided in this Agreement, or (b) the written mutual consent signed by each of
the parties hereto. This Agreement shall not be otherwise terminated.


                                      IV-6
<PAGE>


                                    ARTICLE 6

                                OTHER PROVISIONS

         6.1 Notices. Any notice, demand or request required or permitted to be
given under the provisions of this Agreement shall be in writing and dispatched
by the same means to all of the foregoing on the same day and shall be deemed to
have been duly given and received (i) when delivered if delivered by hand or by
confirmed facsimile transmission or telex and (ii) three business days after
mailing if mailed by reputable courier service or registered or certified mail,
postage prepaid and return receipt requested, to the parties at the following
addresses (or to such other address as any party may request in a notice
delivered in accordance with this Section 6.1 to the other parties hereto,
provided that notices of a change of address shall be effective only upon
receipt thereof):

         (a)      If to Acquiror:

                  Iron Mountain Incorporated
                  745 Atlantic Avenue, 10th Floor
                  Boston, MA 02111
                  Telephone:  (617) 357-4455
                  Telecopy:   (617) 350-7881
                  Attention:  Chief Executive Officer

         With copy to:

                  Sullivan & Worcester LLP
                  One Post Office Square
                  Boston, MA  02109
                  Telephone:  (617) 338-2800
                  Telecopy:   (617) 338-2880
                  Attention:  William J. Curry, Esq.

         and

         If to the Agent:

                  c/o B. Thomas Golisano
                  911 Panorama Trail South
                  Rochester, NY 14625
                  Telephone: (716) 385-6666
                  Telecopy:  (716) 383-3428



                             IV-7
<PAGE>

         With copies to:

                  Woods, Oviatt, Gilman, Sturman & Clarke LLP
                  44 Exchange Street
                  Rochester, NY 14614
                  Telephone:  (716) 987-2821
                  Telecopy:   (716) 454-3968
                  Attention:  Harry P. Messina, Jr., Esq.

         If to the Escrow Agent:

                  State Street Bank and Trust Company
                  Two International Place
                  Boston, MA 02110
                  Telephone: (617) 664-5776
                  Telecopy:  (617) 664-5365
                  Attention: Corporate Trust Department
                             Iron Mountain Incorporated-Escrow Indemnity Funds

Unless otherwise refused by Acquiror or the Agent in writing, the Escrow Agent
shall assume that the receipt of any notice was received by Acquiror and the
Agent on the same day as received by Escrow Agent.

         6.2 Benefit and Assignment. This Agreement shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
assigns.

         6.3 Entire Agreement; Amendment. This Agreement contains all the terms
agreed upon by the parties with respect to the subject matter hereof, except
certain terms and provisions set forth in the Merger Agreement and the
Stockholders' Agreement and except that capitalized terms not otherwise used
herein shall have the meanings set forth in the Merger Agreement. This Agreement
may be amended only by a written instrument signed by the parties against which
enforcement of any waiver, change, modification, extension or discharge is
sought. A waiver of any of the terms and conditions of this Escrow Agreement on
one occasion shall not constitute a waiver of the other terms of this Agreement,
or of such terms and conditions on any other occasion.

         6.4 Tax Identification Numbers. Each party hereto, except the Escrow
Agent, shall provide the Escrow Agent with their Tax Identification Number (TIN)
as assigned by the Internal Revenue Service. All interest or other income earned
under this Agreement shall be allocated and paid as provided herein and reported
by the recipient to the Internal Revenue Service as having been so allocated and
paid.

         6.5 Confirmation of Transfer Instructions; Certain Account Numbers.

             (a) In the event funds transfer instructions are given (other than
in writing at the time of execution of this Agreement), whether in writing, by
telecopier or otherwise, the Escrow Agent shall seek confirmation of such
instructions by telephone call-back to the person

                                      IV-8
<PAGE>


or persons designated from time to time in writing by the respective parties
hereto, and the Escrow Agent may rely upon the confirmations of anyone
purporting to be the person or persons so designated. The persons and telephone
numbers for call-backs may be changed only in a writing actually received and
acknowledged by the Escrow Agent. The parties to this Agreement acknowledge that
such security procedure is commercially reasonable.

             (b) It is understood that the Escrow Agent, in connection with any
funds transfer, may rely solely upon any account numbers or similar identifying
number provided by the parties hereto to identify (i) such party, (ii) such
party's bank, or (iii) an intermediary bank.

         6.6 Headings. The headings of the sections and subsections of this
Agreement are for ease of reference only and do not evidence the intentions of
the parties.

         6.7 Governing Law. This agreement shall be governed by and construed
and enforced in accordance with the law (other than the law governing conflict
of law questions) of the Commonwealth of Massachusetts.

         6.8 Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

         6.9 Dispute Resolution. It is understood and agreed that should any
dispute arise, including a dispute described in Section 2.4 hereof, with respect
to the delivery, ownership, right of possession, and/or disposition of the
Escrow Indemnity Funds, or should any claim be made upon such Escrow Indemnity
Funds by a third party, the Escrow Agent upon receipt of written notice of such
dispute or claim by the parties hereto or by a third party, is authorized and
directed to retain in its possession without liability to anyone, all or any of
said Escrow Indemnity Funds until such dispute shall have been settled either by
the mutual written agreement of the parties involved or by a final order, decree
or judgment of a Court in the United States of America, the time for perfection
of an appeal of such order, decree or judgment having expired. The Escrow Agent
may, but shall be under no duty whatsoever to, institute or defend any legal
proceedings which relate to the Escrow Indemnity Funds.

         6.10 Consent to Jurisdiction and Service. Acquiror and the Agent hereby
absolutely and irrevocably consent and submit to the jurisdiction of the courts
in the Commonwealth of Massachusetts and of any Federal court located in said
Commonwealth in connection with any actions or proceedings brought against
Acquiror and the Agent by the Escrow Agent arising out of or relating to this
Escrow Agreement. In any such action or proceeding, Acquiror and the Agent
hereby absolutely and irrevocably waive personal service of any summons,
complaint, declaration or other process and hereby absolutely and irrevocably
agree that the service thereof may be made by certified or registered
first-class mail directed to Acquiror and the Agent, as the case may be, at
their respective addresses in accordance with Section 6.1 hereof.

         6.11 Force Majeure. Neither Acquiror nor the Agent nor the Escrow Agent
shall be responsible for delays or failures in performance resulting from acts
beyond its control. Such acts shall include but not be limited to acts of God,
strikes, lockouts, riots, acts of war,

                                      IV-9
<PAGE>


epidemics, governmental regulations superimposed after the fact, fire,
communication line failures, computer viruses, power failures, earthquakes or
other disasters.

         6.12 Reproduction of Documents. This Agreement and all documents
relating hereto, including, without limitation, (a) consents, waivers and
modifications which may hereafter be executed, and (b) certificates and other
information previously or hereafter furnished, may be reproduced by any
photographic, photostatic, microfilm, optical disk, micro-card, miniature
photographic or other similar process. The parties agree that any such
reproduction shall be admissible in evidence as the original itself in any
judicial or administrative proceeding, whether or not the original is in
existence and whether or not such reproduction was made by a party in the
regular course of business, and that any enlargement, facsimile or further
reproduction of such reproduction shall likewise be admissible in evidence.

         6.13 Joint and Several Obligations. Notwithstanding anything to the
contrary in Sections 3.2, 3.3 or 4.1, Acquiror and the Agent hereby agree that
with respect to any indemnification or other obligation Acquiror owes to the
Escrow Agent under this Agreement, Acquiror shall be reimbursed by the
Stockholders for one half of the aggregate amount of any such indemnification or
obligation (i) first, from the interest and income on the Escrow Indemnity Funds
when such interest or income is earned or otherwise becomes available, and (ii)
second, to the extent such interest and other income is insufficient to
reimburse Acquiror at the end of the Escrow Indemnity Period, from the Escrow
Indemnity Funds, if any, remaining at the expiration of the Escrow Indemnity
Period. Acquiror shall give the Agent written notice of any such indemnification
or obligations within a reasonable time after such indemnification or
obligations arise, and in any case before paying any such indemnification or
obligation to the Escrow Agent. The foregoing sentences are intended to set
forth only the rights and obligations as between the Agent and Acquiror and
shall not in any way affect any joint and several obligation of Acquiror and the
Agent to the Escrow Agent.


                     [Signatures appear on following page.]

                                     IV-10
<PAGE>


         IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and delivered by their duly authorized partners or officers as of the
day and year first written above.

                                  THE COMPANY:

                                  SAFESITE RECORDS MANAGEMENT CORPORATION


                                  By:______________________________________
                                     Name:
                                     Title:

                                  THE AGENT:


                                  B. Thomas Golisano, as Agent

                                  ACQUIROR:

                                  IRON MOUNTAIN INCORPORATED


                                  By:______________________________________
                                     Name:
                                     Title:

                                  ESCROW AGENT:

                                  STATE STREET BANK AND TRUST COMPANY, as
                                  Escrow Agent

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


                                  By:_____________________________________
                                     Name:
                                     Title:



                                     IV-11
<PAGE>


                                                                         ANNEX V

                        DELAWARE GENERAL CORPORATION LAW


         262 APPRAISAL RIGHTS. - (a) Any stockholder of a corporation of this
State who holds shares of stock on the date of the making of a demand pursuant
to subsection (d) of this section with respect to such shares, who continuously
holds such shares through the effective date of the merger or consolidation, who
has otherwise complied with subsection (d) of this section and who has neither
voted in favor of the merger or consolidation nor consented thereto in writing
pursuant to ss.228 of this title shall be entitled to an appraisal by the Court
of Chancery of the fair value of his shares of stock under the circumstances
described in subsections (b) and (c) of this section. As used in this section,
the word "stockholder" means a holder of record of stock in a stock corporation
and also a member of record of a nonstock corporation; the words "stock" and
"share" mean and include what is ordinarily meant by those words and also
membership interest of a member of a nonstock corporation; and the words
"depository receipt" mean a receipt or other instrument issued by a depository
representing an interest in one or more shares, or fractions thereof, solely of
stock of a corporation, which stock is deposited with the depository.

         (b) Appraisal rights shall be available for the shares of any class or
series of stock of a constituent corporation in a merger or consolidation to be
effected pursuant to ss.251 (other than a merger effected pursuant to subsection
(g) of Section 251), 252, 254, 257, 258, 263 or 264 of this title:

         (1) Provided, however, that no appraisal rights under this section
shall be available for the shares of any class or series of stock, which stock
or depository receipts in respect thereof, at the record date fixed to determine
the stockholders entitled to receive notice of and to vote at the meeting of
stockholders to act upon the agreement of merger or consolidation, were either
(i) listed on a national securities exchange or designated as a national market
system security on an interdealer quotation system by the National Association
of Securities Dealers, Inc. or (ii) held of record by more than 2,000
stockholders; and further provided that no appraisal rights shall be available
for any shares of stock of the constituent corporation surviving a merger if the
merger did not require for its approval the vote of the holders of the surviving
corporation as provided in subsection (f) of ss.251 of this title.

         (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
under this section shall be available for the shares of any class or series of
stock of a constituent corporation if the holders thereof are required by the
terms of an agreement of merger or consolidation pursuant to ss.ss.251, 252,
254, 257, 258, 263 and 264 of this title to accept for such stock anything
except:

         a. Shares of stock of the corporation surviving or resulting from such
merger or consolidation, or depository receipts in respect thereof;

         b. Shares of stock of any other corporation, or depository receipts in
respect thereof, which shares of stock or depository receipts at the effective
date of the merger or consolidation will be either listed on a national
securities exchange or designated as a national market system security on an
interdealer quotation system by the National Association of Securities Dealers,
Inc. or held of record by more than 2,000 stockholders;

         c. Cash in lieu of fractional shares or fractional depository receipts
described in the foregoing subparagraphs a. and b. of this paragraph; or

         d. Any combination of the shares of stock, depository receipts and cash
in lieu of fractional shares or fractional depository receipts described in the
foregoing subparagraphs a., b. and c. of this paragraph.

         (3) In the event all of the stock of a subsidiary Delaware corporation
party to a merger effected under ss.253 of this title is not owned by the parent
corporation immediately prior to the merger, appraisal rights shall be available
for the shares of the subsidiary Delaware corporation.

         (c) Any corporation may provide in its certificate of incorporation
that appraisal rights under this section shall be available for the shares of
any class or series of its stock as a result of an amendment to its certificate
of incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation. If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.

                                      V-1
<PAGE>



         (d)  Appraisal rights shall be perfected as follows:

         (1) If a proposed merger or consolidation for which appraisal rights
are provided under this section is to be submitted for approval at a meeting of
stockholders, the corporation, not less than 20 days prior to the meeting, shall
notify each of its stockholders who was such on the record date for such meeting
with respect to shares for which appraisal rights are available pursuant to
subsections (b) or (c) hereof that appraisal rights are available for any or all
of the shares of the constituent corporations, and shall include in such notice
a copy of this section. Each stockholder electing to demand the appraisal of his
shares shall deliver to the corporation, before the taking of the vote on the
merger or consolidation, a written demand for appraisal of his shares. Such
demand will be sufficient if it reasonably informs the corporation of the
identity of the stockholder and that the stockholder intends thereby to demand
the appraisal of his shares. A proxy or vote against the merger or consolidation
shall not constitute such a demand. A stockholder electing to take such action
must do so by a separate written demand as herein provided. Within 10 days after
the effective date of such merger or consolidation, the surviving or resulting
corporation shall notify each stockholder of each constituent corporation who
has complied with this subsection and has not voted in favor of or consented to
the merger or consolidation of the date that the merger or consolidation has
become effective; or

         (2) If the merger or consolidation was approved pursuant to ss.228 or
253 or this title, the surviving or resulting corporation, either before the
effective date of the merger or consolidation or within 10 days thereafter,
shall notify each of the stockholders entitled to appraisal rights of the
effective date of the merger or consolidation and that appraisal rights are
available for any or all of the shares of the constituent corporation, and shall
include in such notice a copy of this section. The notice shall be sent by
certified or registered mail, return receipt requested, addressed to the
stockholder at his address as it appears on the records of the corporation. Any
stockholder entitled to appraisal rights may, within 20 days after the date of
mailing of the notice, demand in writing from the surviving or resulting
corporation the appraisal of his shares. Such demand will be sufficient if it
reasonably informs the corporation of the identity of the stockholder and that
the stockholder intends thereby to demand the appraisal of his shares.

         (e) Within 120 days after the effective date of the merger or
consolidation, the surviving or resulting corporation or any stockholder who has
complied with subsections (a) and (d) hereof and who is otherwise entitled to
appraisal rights, may file a petition in the Court of Chancery demanding a
determination of the value of the stock of all such stockholders.
Notwithstanding the foregoing, at any time within 60 days after the effective
date of the merger or consolidation, any stockholder shall have the right to
withdraw his demand for appraisal and to accept the terms offered upon the
merger or consolidation. Within 120 days after the effective date of the merger
or consolidation, any stockholder who has complied with the requirements of
subsections (a) and (d) hereof, upon written request, shall be entitled to
receive from the corporation surviving the merger or resulting from the
consolidation a statement setting forth the aggregate number of shares not voted
in favor of the merger or consolidation and with respect to which demands for
appraisal have been received and the aggregate number of holders of such shares.
Such written statement shall be mailed to the stockholder within 10 days after
his written request for such a statement is received by the surviving or
resulting corporation or within 10 days after expiration of the period for
delivery of demands for appraisal under subsection (d) hereof, whichever is
later.

         (f) Upon the filing of any such petition by a stockholder, service of a
copy thereof shall be made upon the surviving or resulting corporation, which
shall within 20 days after such service file in the office of the Register in
Chancery in which the petition was filed a duly verified list containing the
names and addresses of all stockholders who have demanded payment for their
shares and with whom agreements as to the value of their shares have not been
reached by the surviving or resulting corporation. If the petition shall be
filed by the surviving or resulting corporation, the petition shall be
accompanied by such a duly verified list. The Register in Chancery, if so
ordered by the Court, shall give notice of the time and place fixed for the
hearing of such petition by registered or certified mail to the surviving or
resulting corporation and to the stockholders shown on the list at the addresses
therein stated. Such notice shall also be given by 1 or more publications at
least 1 week before the day of the hearing, in a newspaper of general
circulation published in the City of Wilmington, Delaware or such publication as
the Court deems advisable. The forms of the notices by mail and by publication
shall be approved by the Court, and the costs thereof shall be borne by the
surviving or resulting corporation.

         (g) At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled to
appraisal rights. The Court may require the stockholders who have demanded an
appraisal for their shares and who hold stock represented by certificates to
submit their certificates of

                                      V-2
<PAGE>


stock to the Register in Chancery for notation thereon of the pendency of the
appraisal proceedings; and if any stockholder fails to comply with such
direction, the Court may dismiss the proceedings as to such stockholder.

         (h) After determining the stockholders entitled to an appraisal, the
Court shall appraise the shares, determining their fair value exclusive of any
element of value arising from the accomplishment or expectation of the merger or
consolidation, together with a fair rate of interest, if any, to be paid upon
the amount determined to be the fair value. In determining such fair value, the
Court shall take into account all relevant factors. In determining the fair rate
of interest, the Court may consider all relevant factors, including the rate of
interest which the surviving or resulting corporation would have had to pay to
borrow money during the pendency of the proceeding. Upon application by the
surviving or resulting corporation or by any stockholder entitled to participate
in the appraisal proceeding, the Court may, in its discretion, permit discovery
or other pretrial proceedings and may proceed to trial upon the appraisal prior
to the final determination of the stockholder entitled to an appraisal. Any
stockholder whose name appears on the list filed by the surviving or resulting
corporation pursuant to subsection (f) of this section and who has submitted his
certificates of stock to the Register in Chancery, if such is required, may
participate fully in all proceedings until it is finally determined that he is
not entitled to appraisal rights under this section.

         (i) The Court shall direct the payment of the fair value of the shares,
together with interest, if any, by the surviving or resulting corporation to the
stockholders entitled thereto. Interest may be simple or compound, as the Court
may direct. Payment shall be so made to each such stockholder, in the case of
holders of uncertificated stock forthwith, and the case of holders of shares
represented by certificates upon the surrender to the corporation of the
certificates representing such stock. The Court's decree may be enforced as
other decrees in the Court of Chancery may be enforced, whether such surviving
or resulting corporation be a corporation of this State or of any state.

         (j) The costs of the proceeding may be determined by the Court and
taxed upon the parties as the Court deems equitable in the circumstances. Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
the shares entitled to an appraisal.

         (k) From and after the effective date of the merger or consolidation,
no stockholder who has demanded his appraisal rights as provided in subsection
(d) of this section shall be entitled to vote such stock for any purpose or to
receive payment of dividends or other distributions on the stock (except
dividends or other distributions payable to stockholders of record at a date
which is prior to the effective date of the merger or consolidation); provided,
however, that if no petition for an appraisal shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall deliver
to the surviving or resulting corporation a written withdrawal of his demand for
an appraisal and an acceptance of the merger or consolidation, either within 60
days after the effective date of the merger or consolidation as provided in
subsection (e) of this section or thereafter with the written approval of the
corporation, then the right of such stockholder to an appraisal shall cease.
Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery
shall be dismissed as to any stockholder without the approval of the Court, and
such approval may be conditioned upon such terms as the Court deems just.

         (l) The shares of the surviving or resulting corporation to which the
shares of such objecting stockholders would have been converted had they
assented to the merger or consolidation shall have the status of authorized and
unissued shares of the surviving or resulting corporation. (Last amended by Ch.
299, L. '95, eff. 2-1-96.)





                                      V-3
<PAGE>

                                     Part II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


Item 20. Indemnification of Directors and Officers.

         Section 145 of the Delaware General Corporation Law (the "DGCL")
provides, in effect, that any person made a party to any action by reason of the
fact that he is or was a Director, officer, employee or agent of Iron Mountain
may and, in certain cases, must be indemnified by Iron Mountain against, in the
case of a non-derivative action, judgments, fines, amounts paid in settlement
and reasonable expenses (including attorney's fees) incurred by him as a result
of such action, and in the case of a derivative action, against expenses
(including attorney's fees), if in either type of action he acted in good faith
and in a manner he reasonably believed to be in or not opposed to the best
interests of Iron Mountain. This indemnification does not apply, in a derivative
action, to matters as to which it is adjudged that the Director, officer,
employee or agent is liable to Iron Mountain, unless upon court order it is
determined that, despite such adjudication of liability, but in view of all the
circumstances of the case, he is fairly and reasonable entitled to indemnity for
expenses, and, in a non-derivative action, to any criminal proceeding in which
such person had reasonable cause to believe his conduct was unlawful.

         Article Sixth of Iron Mountain's Restated Certificate of Incorporation
provides that Iron Mountain shall indemnify each person who is or was an officer
or Director of Iron Mountain to the fullest extent permitted by Section 145 of
the DGCL.

         Article Seventh of Iron Mountain's Restated Certificate of
Incorporation states that no Director of Iron Mountain shall be liable to Iron
Mountain or its stockholders for monetary damages for breach of fiduciary duty
as a Director, except to the extent that exculpation from liability is not
permitted under the DGCL as in effect when such breach occurred.

Item 21. Exhibits and Financial Statement Schedules.

         Exhibits indicated below are incorporated by reference to documents of
Iron Mountain on file with the Securities and Exchange Commission. Exhibit
numbers in parentheses refer to the exhibit numbers in the applicable filing.
All other exhibits are filed herewith.

(a)      Exhibits


<TABLE>
<CAPTION>
     Exhibit No.                                    Item                                              Exhibit
     -----------                                    ----                                              -------
           <S>        <C>                                                                 <C> 
           2          Agreement and Plan of Merger, dated as of February 19,                           (2)5
                      1997, by and among Iron Mountain,  IM-1 Acquisition
                      Corp., and Safesite Records Management Corporation

           2A         Amendment No. 1 to Agreement and Plan of Merger, dated               Filed herewith as Exhibit 2A
                      as of April 1, 1997, by and among Iron Mountain,  IM-1
                      Acquisition Corp., and Safesite Records Management
                      Corporation

           3.1        Amended and Restated Certificate of Incorporation of Iron                       (3.1)1
                      Mountain, as amended

           3.2        By-Laws of Iron Mountain, as amended                                            (3.2)3

           5          Opinion of Sullivan & Worcester, LLP                                  Filed herewith as Exhibit 5


                                                       II-1

<PAGE>


           10.1       Credit Agreement, dated as of September 30, 1996, among                          (10)4
                      Iron Mountain, the lenders party thereto and The Chase
                      Manhattan Bank, as Administrative Agent

           10.2A      Amendment No. 1 to the Credit Agreement, dated as of                           (10.2A)5
                      January 15, 1997, among Iron Mountain, the lenders party
                      thereto and The Chase Manhattan Bank, as Administrative
                      Agent

           10.2B      Amendment and Restatement to Credit Agreement, dated as
                      (10.2B)5 of March 3, 1997, among Iron Mountain, the
                      lenders party thereto and The Chase Manhattan Bank, as
                      Administrative Agent

           10.3       Indenture for 101/8% Senior Subordinated Notes due 2006                        (10.3) 5
                      by and among Iron Mountain, certain of its subsidiaries and
                      First National Association, as trustee, dated October 1,
                      1996

           10.4       Iron Mountain Incorporated 1995 Stock Incentive Plan, as            Filed herewith as Exhibit 10.4
                      amended

           10.5       Form of Iron Mountain Incorporated 1995 Stock Option                            (10.7)1
                      Plan for Non-Employee Directors

           10.6       Asset Purchase Agreement, dated July 19, 1995, among                           (10.11)1
                      Iron Mountain Records Management, Inc. ("IMRM"),
                      DataFile Services, Inc. and Cynthia and Lee Macklin

           10.7       Asset Purchase and Sale Agreement, dated as of October 5,                      (10.12)1
                      1995, among IMRM, Brooks Records Center, Inc. and
                      Forty Acres, Ltd.

           10.8       Asset Purchase and Sale Agreement, dated as of November                        (10.13)1
                      1, 1995, among IMRM, Nashville Vault Company, Ltd.
                      and USA Vault Corporation

           10.9       Asset Purchase and Sale Agreement, dated November 14,                          (10.14)1
                      1995, among IMRM, Data Vault Corporation and Ralph
                      Stoddard III

           10.10      Merger Agreement, dated as of November 17, 1995,                               (10.15)1
                      among IMRM, Temp DSSI, Inc. and Data Storage
                      Systems, Inc.

           10.11      Asset Purchase and Sale Agreement, dated November 17,                          (10.16)1
                      1995, among IMRM, Florida Data Bank, Inc., Carl J.
                      Strang III, Carl J. Strang II and 6/10 Corporation

           10.12      Asset Purchase and Sale Agreement, dated November 22,                          (10.17)1
                      1995 among IMRM, Data Management Business Records
                      Storage, Inc. and Outdoor West, Inc.


                                                       II-2

<PAGE>


           10.13      Record Center Storage Services Agreement between IMRM                          (10.18)1
                      and Resolution Trust Corporation, dated July 31, 1992, as
                      renewed by letter agreement effective July 26, 1996
                      between Iron Mountain and the Federal Deposit Insurance
                      Corporation

           10.14      Lease between IMRM and IM Houston (CR) Limited                                 (10.19)1
                      Partnership, dated January 1, 1991

           10.15      Asset Purchase and Sale Agreement, dated July 11, 1996,                        (10.20)2
                      among IMRM, The Fortress Corporation and certain
                      subsidiaries

           10.16      Stock Purchase and Sale Agreement, dated as of August 9,                       (10.21)2
                      1996, among IMRM and the shareholders of Data Archive
                      Services of Miami, Inc. and Data Archives Services, Inc.

           10.17      Asset Purchase and Sale Agreement, dated August 13,                            (10.22)2
                      1996, among IMRM, International Record Storage and
                      Retrieval Service, Inc. and Laurance Winnerman, Sanford
                      Winnerman and Penny Novak

           10.18      Asset Purchase Agreement, dated as of September 6, 1996,                       (10.23)2
                      among IMRM, Mohawk Business Record Storage, Inc.,
                      Michael M. Rabin, Richard K. Rabin, Herman Ladin and
                      Sidney Ladin

           10.19       Registration Rights Agreement between Iron Mountain and                        (4.1)1
                      certain Stockholders, dated as of December 14, 1990

           10.20      Stockholders' Agreement, dated as of February 19, 1997                         (10.20)5
                      by and among Iron Mountain and certain stockholders of
                      Safesite Records Management Corporation

           10.21      Form of Escrow Agreement, by and among Iron Mountain,                 Filed herewith as Annex IV
                      Safesite Records Management Corporation, B. Thomas
                      Golisano, as Agent for the Stockholders, and State Street
                      Bank and Trust Company, as Escrow Agent

           10.22      Asset Purchase and Sale Agreement, dated March 12,                  Filed herewith as Exhibit 10.22
                      1997, by and among IMRM, Chicago Data Destruction
                      Corporation, and John Mengel and John S. Mengel

           11         Statement re: computation of per share earnings                                  (11)5

           12         Schedule of computation of ratio of earnings to fixed                            (12)5
                      charges

           21         Subsidiaries of Iron Mountain                                        Filed herewith as Exhibit 21

           23.1       Consent of Sullivan & Worcester, LLP                                 Contained in Exhibit 5; filed
                                                                                                     herewith

           23.2       Consent of Arthur Andersen LLP                                      Filed herewith as Exhibit 23.2

           23.3       Consent of Arthur Andersen LLP                                      Filed herewith as Exhibit 23.3


                                                       II-3

<PAGE>


           23.4       Consent of Geo. S. Olive & Co. LLC                                  Filed herewith as Exhibit 23.4

           23.5       Consent of Rothstein, Kass & Company, P.C.                          Filed herewith as Exhibit 23.5

           24          Powers of Attorney                                                  Contained in Page II-5 of the
                                                                                              Registration Statement

           27         Financial Data Schedule                                                          (27)5
</TABLE>

- ------------------------
1        Filed as an Exhibit to Iron Mountain's Registration Statement No.
         33-99950 filed with the Securities and Exchange Commission on December
         1, 1995.
2        Filed as an Exhibit to Iron Mountain's Registration Statement No.
         333-10359 filed with the Securities and Exchange Commission on August
         16, 1996.
3        Filed as an Exhibit to Iron Mountain's Quarterly Report on Form 10-Q
         for the quarter ended June 30, 1996, filed with the Securities and
         Exchange Commission, File No. 0-27584.
4        Filed as an Exhibit to Iron Mountain's Quarterly Report on Form 10-Q
         for the quarter ended September 30, 1996, filed with the Securities and
         Exchange Commission, File No. 0-27584.
5        Filed as an Exhibit to Iron Mountain's Annual Report on Form 10-K for
         the year ended December 31, 1996, filed with the Securities and
         Exchange Commission, File No. 0-27584.

(b)      Financial Statement Schedules

    The following Financial Statement Schedules are filed herewith:

    Iron Mountain Incorporated:

       Schedule II - Valuation and Qualifying Accounts

    Safesite Records Management Corporation:

       Schedule II - Valuation and Qualifying Accounts

Item 22. Undertakings

         Iron Mountain hereby undertakes that it will provide by means of a
post-effective amendment, all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the Registration Statement when it became effective.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to Directors, officers and controlling persons of
Iron Mountain, Iron Mountain has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy
as expressed in the Securities Act of 1933 and is, therefore, unenforceable. In
the event that a claim for indemnification against such liabilities (other than
the payment by Iron Mountain in the successful defense of any action, suit or
proceeding) is asserted by such Director, officer or controlling person in
connection with the securities being registered, Iron Mountain will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities
Act of 1933 and will be governed by the final adjudication of such issue.


                                      II-4

<PAGE>


                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
Iron Mountain Incorporated has duly caused this registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the City
of Boston, Commonwealth of Massachusetts, on April 4, 1997.


                             IRON MOUNTAIN INCORPORATED



                             By:   /s/ C. Richard Reese
                                   -------------------------------------------
                                   Name:   C. Richard Reese
                                   Title:  Chairman of the Board of Directors
                                           and Chief Executive Officer

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement on Form S-4 relating to Common Stock has been signed
below on April 4, 1997 by the following persons in the capacities and on the
dates indicated; and each of the undersigned officers and Directors of Iron
Mountain Incorporated hereby severally constitutes and appoints C. Richard
Reese, David S. Wendell and Eugene B. Doggett, and each of them, to sign for
him, and in his name in the capacity indicated below, such Registration
Statement for the purpose of registering such securities under the Securities
Act of 1933, as amended, and any and all amendments thereto, including without
limitation any registration statement or post-effective amendment thereof filed
under and meeting the requirements of Rule 462(b) under the Securities Act,
hereby ratifying and confirming our signatures as they may be signed by our
attorneys to such Registration Statement and any and all amendments thereto.


<TABLE>
<CAPTION>
Signature                                 Title                                                Date
- ---------                                 -----                                                ----

<S>                                       <C>                                       <C>    
 /s/ C. Richard Reese                     Chairman of the Board of Directors              April 4, 1997
- -------------------------------------     and Chief Executive Officer               -------------------
C. Richard Reese


 /s/ David S. Wendell                     President, Chief Operating Officer              April 4, 1997
- -------------------------------------     and Director                              -------------------
David S. Wendell                         


 /s/ Eugene B. Doggett                    Executive Vice President, Chief                 April 4, 1997
- -------------------------------------     Financial Officer and Director            -------------------
Eugene B. Doggett                     


 /s/ Constantin R. Boden                  Director                                        April 4, 1997
- -------------------------------------                                               -------------------
Constantin R. Boden


 /s/ Arthur D. Little                     Director                                        April 4, 1997
- -------------------------------------                                               -------------------
Arthur D. Little


 /s/ Vincent J. Ryan                      Director                                        April 4, 1997
- -------------------------------------                                               -------------------
Vincent J. Ryan


 /s/ Jean A. Bua                          Vice President and Corporate                    April 4, 1997
- -------------------------------------     Controller                                -------------------
Jean A. Bua                          
</TABLE>


                                      II-5

<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Board of Directors of
  Iron Mountain Incorporated:

     We have audited, in accordance with generally accepted auditing standards,
the consolidated financial statements of Iron Mountain Incorporated for each of
the three years in the period ended December 31, 1996 and have issued our report
thereon dated March 4, 1997. Our audits were made for the purpose of forming an
opinion on those statements taken as a whole. The supplemental schedule listed
in the accompanying index is the responsibility of the Company's management and
is presented for purposes of complying with the Securities and Exchange
Commission's rules and regulations under the Securities Exchange Act of 1934 and
is not a required part of the basic financial statements. The supplemental
schedule has been subjected to the auditing procedures applied in our audits of
the basic financial statements and, in our opinion, is fairly stated, in all
material respects, in relation to the basic financial statements taken as a
whole.



                                              ARTHUR ANDERSEN LLP

Boston, Massachusetts
March 4, 1997


                                       S-1

<PAGE>


<TABLE>
<CAPTION>
                                                                                                                   Schedule II

                           IRON MOUNTAIN INCORPORATED
                        Valuation and Qualifying Accounts
                             (Amounts in Thousands)

                                                  Balance at
                                               Beginning of the                                             Balance at End of 
Year Ended December 31,                              Year          Charged to Expense       Deductions         the Year
- -------------------------------------------- --------------------- -------------------- ------------------- -------------------
<S>                                            <C>                  <C>                    <C>                <C>
Allowance for doubtful accounts:

1994 ..................................        $         502        $        356           $     (327)        $       531

1995 ..................................                  531                 630                 (510)                651

1996 ..................................                  651                 639                 (229)              1,061
</TABLE>



                                       S-2

<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Stockholders and Board of Directors of
  Safesite Records Management Corporation:

We have audited in accordance with generally accepted auditing standards, the
financial statements of Safesite Records Management Corporation for each of the
three years in the period ended December 31, 1996 and have issued our report
thereon dated March 14, 1997. Our audits were made for the purpose of forming an
opinion on those statements taken as a whole. The supplemental schedule listed
in the accompanying index is the responsibility of the Company's management and
is presented for purposes of complying with the Securities and Exchange
Commission's rules and regulations under the Securities Exchange Act of 1934 and
is not a required part of the basic financial statements. The supplemental
schedule has been subjected to the auditing procedures applied in our audits of
the basic financial statements and, in our opinion, is fairly stated, in all
material respects, in relation to the basic financial statements taken as a 
whole.



                                              /s/ ARTHUR ANDERSEN LLP

Boston, Massachusetts
March 14, 1997 

                                      S-3

<PAGE>


                                                                     Schedule II

                    SAFESITE RECORDS MANAGEMENT CORPORATION
                       Valuation and Qualifying Accounts 

<TABLE>
<CAPTION>
                                        Balance at                                                                   
                                     Beginning of the                                              Balance at End of 
    Year Ended December 31,                Year            Charged to Expense      Deductions          the Year      
- ----------------------------------   -------------------   ---------------------   -------------   ------------------
<S>                                        <C>                    <C>                 <C>                <C>         
Allowance for doubtful accounts:                                                                                     
  1994 ...........................         $95,000                $49,055             $49,055            $95,000     
  1995 ...........................          95,000                 30,529              30,529             95,000     
  1996 ...........................          95,000                  7,286               7,086             95,200     
</TABLE>



                                      S-4




 
                                                                      EXHIBIT 2A

                                                                  CONFORMED COPY




                                 AMENDMENT NO. 1
                                       TO
                          AGREEMENT AND PLAN OF MERGER


         THIS AMENDMENT No. 1 TO AGREEMENT AND PLAN OF MERGER is made as of
April 1, 1997, among Iron Mountain Incorporated, a Delaware corporation
("Acquiror"), IM-1 Acquisition Corp., a Delaware corporation and a wholly owned
Subsidiary of Acquiror ("Acquiror Merger Subsidiary"), and Safesite Records
Management Corporation, a Delaware corporation (the "Company").

                              W I T N E S S E T H:

         WHEREAS, Acquiror, Acquiror Merger Subsidiary and the Company are
parties to an Agreement and Plan of Merger dated as of February 19, 1997 (the
"Merger Agreement"); and

         WHEREAS, Acquiror, Acquiror Merger Subsidiary and the Company have
agreed to amend the Merger Agreement as set forth herein pursuant to Section 7.3
of the Merger Agreement;

         NOW, THEREFORE, in consideration of the foregoing, the parties hereto,
intending to be legally bound, agree as follows:

         1. Section 1.8 of the Merger Agreement is hereby amended by inserting
the following sentence immediately after the first sentence thereof:

         "B. Thomas Golisano shall be appointed or elected as a Director of
         Acquiror, to hold office in accordance with the Restated Certificate of
         Incorporation and By-Laws of Acquiror."

         2. Section 2.4 of the Merger Agreement is hereby deleted and the
following new Section 2.4 is inserted in its place:

         "Section 2.4.  Option Securities.

                  (a) As soon as reasonably practicable after the Effective
         Time, each holder of an Option Security who elects to shall receive,
         subject to the indemnification provisions of Article 8 hereof, (i)
         subject to clause (ii) below, in respect of any such Option Security or
         portion thereof which is exercisable at the Effective Time (including
         those which will become exercisable by virtue of the consummation of
         the


<PAGE>


                                       -2-

         Merger) (1) a non-qualified option to acquire shares of Acquiror Stock
         under Acquiror's 1995 Stock Incentive Plan, which option for Acquiror
         Stock shall (A) have an exercise price per share determined by dividing
         the exercise price per share of the applicable Option Security by the
         Stock Conversion Number and (B) entitle the holder to purchase that
         number of shares equal to the product of (x) the number of shares
         subject to such Option Security which as of the Effective Time is
         exercisable and (y) the Stock Conversion Number, and (2) cash in the
         amount of the product of (x) the number of shares subject to such
         Option Security which as of the Effective Time is exercisable and (y)
         the Cash Conversion Number, and (ii) in respect of any such Option
         Security or portion thereof which is not exercisable at the Effective
         Time and in respect of those Option Securities to acquire 17,500 shares
         of Company Stock recently granted to the five individuals identified in
         Section 3.13(b) of the Disclosure Schedule, a non-qualified option to
         acquire shares of Acquiror Stock under Acquiror's 1995 Stock Incentive
         Plan at an exercise price and in an amount affording the holder
         equivalent value for the Option Security being exchanged, which option
         for Acquiror Stock shall (1) have an exercise price per share
         determined by dividing (x) the exercise price per share of the
         applicable Option Security by (y) the quotient of the Share Price
         divided by the Determination Price, and (2) entitle the holder to
         purchase that number of shares as equals the product of (x) the number
         of shares subject to such Option Security which as of the Effective
         Time is not exercisable and (y) the quotient of the Share Price divided
         by the Determination Price. In addition, each option to acquire
         Acquiror Stock issued in accordance with this Section 2.4 shall be
         exercisable (subject to the terms of such Option Security and
         Acquiror's 1995 Stock Incentive Plan) on the date the applicable Option
         Security would have been exercisable and otherwise be subject to the
         terms and conditions of the Acquiror 1995 Stock Incentive Plan (it
         being understood that the terms of the Acquiror option agreement, as to
         any employee, other than the Principal Stockholders, of the Company who
         is not employed by Acquiror or any of its Affiliates on the first
         anniversary of the Closing Date, shall not (a) make it a condition to
         exercise such option that such employee be in compliance with an
         Acquiror confidentiality or non-competition agreement and (b) require
         such employee to pay to Acquiror the excess of the fair market value on
         the day of exercise over the exercise price as a result of being
         employed by a competitor of Acquiror within two years after the
         exercise of such option). Notwithstanding anything to the contrary
         herein, the cash to be received herein by any holder of an Exercisable
         Option prior to the termination of the Escrow Indemnity Period shall be
         adjusted to give full effect to the indemnification provisions of
         Article 8 hereof.

                  (b) In lieu of issuing any option to acquire a fractional
         share of Acquiror Stock, Acquiror shall convert a holder's right to
         receive an option pursuant to this Section 2.4 into a right to receive
         an option to acquire the nearest whole number of shares of Acquiror
         Stock (with no adjustment to any cash amount received in connection
         with the conversion of an Exercisable Option).

                  (c) Notwithstanding the foregoing, in lieu of issuing cash in
         respect of exercisable Option Securities, Acquiror reserves the right,
         in its sole discretion, subject to notification to the Company not less
         than ten (10) days prior to the Closing


<PAGE>


                                       -3-

         Date, to exchange each vested and exercisable Option Security solely
         for an option to acquire Acquiror Stock, the terms and conditions
         (including, without limitation, the amount and exercise price per
         share) of which will be determined in accordance with clause (a)(ii)
         above.

         3. Article 2 of the Merger Agreement is hereby further amended by
inserting the following new Section 2.6 immediately following Section 2.5:

         "Section 2.6 Standstill.

                  (a) Until the first anniversary of the Effective Time, except
         as permitted by Acquiror's Restated By-Laws, any Person who receives or
         is entitled to receive at the Effective Time any shares of Acquiror
         Stock pursuant to Section 2.1 shall not Transfer (as such term is
         defined in Exhibit 2.6 hereto), and Acquiror shall not be required to
         register the Transfer of, the number of shares, rounded upward to the
         nearest whole share (the "Subject Shares"), of Acquiror Stock equal to
         the product of (1) the quotient obtained by dividing (x) the "Lock-up
         Value" by (y) the product of (A) the Common Stock Amount and (B) the
         lesser of the Closing Price and the Determination Price multiplied by
         (2) the Stock Merger Consideration received by such Person in
         connection with the Merger. The "Lock-up Value" shall mean one half
         (1/2) of the sum of (x) the product of the Common Stock Amount and the
         lesser of the Closing Price and the Determination Price plus (y) the
         Cash Amount. The "Closing Price" shall mean the closing price per share
         of Acquiror Stock for the trading day immediately prior to the
         Effective Time. The closing price for such trading day shall be the
         last quoted sale price or, if not so quoted, the average of the low bid
         and high asked prices on the Nasdaq National Market System.

                  (b) Each certificate representing Subject Shares issued
         pursuant to the Merger shall bear the following legend:

                           "The shares represented by this certificate may not
                  be transferred prior to [first anniversary date of the
                  Effective Time to be inserted] except as otherwise permitted
                  by the Restated By-Laws of the Corporation. A copy of the
                  Restated By-Laws of the Corporation will be furnished without
                  charge upon written request addressed to the Corporation at
                  745 Atlantic Avenue, Boston, Massachusetts 02111, Attention:
                  Chief Executive Officer."

                  (c) In order to implement the provisions of this Section 2.6,
         the Restated By-Laws of Acquiror shall be amended on or prior to the
         Closing Date to include the provisions as to the limitations on the
         transferability of the Acquiror Stock set forth in Exhibit 2.6 hereto."

         4. Section 8.2 of the Merger Agreement is hereby amended by inserting
the words "and from the cash, if any, issued with respect to Exercisable Options
pursuant to Section 2.4" immediately after the words "Exchange Merger
Consideration" appearing at the end of the third line thereof.



<PAGE>


                                       -4-

         5. The Merger Agreement is hereby further amended by inserting a new
Exhibit 2.6 thereto substantially in the form of Exhibit 2.6 hereto.

         6. Each of Acquiror, Acquiror Merger Subsidiary and the Company
represents and warrants that all requisite corporate action necessary for the
valid execution and delivery of this Amendment No. 1 has been duly and
effectively taken.

         7. Each capitalized term used herein without definition shall have the
same meaning herein as is given to such term in the Merger Agreement.

         8. The Merger Agreement as amended hereby is ratified and confirmed in
all respects and shall continue in full force and effect.

         9. This Amendment No. 1 may be executed in one or more counterparts,
and by the different Parties hereto in separate counterparts, each of which when
executed shall be deemed to be an original but all of which taken together shall
constitute one and the same agreement.



                  [Remainder of page intentionally left blank.]


<PAGE>


                                       -5-


         IN WITNESS WHEREOF, Acquiror, Acquiror Merger Subsidiary and the
Company have caused this Amendment No. 1 to be executed as of the date first
written above by their respective officers thereunto duly authorized.

                           IRON MOUNTAIN INCORPORATED


                             By: /s/ Eugene B. Doggett
                                 ----------------------------------
                                 Name: Eugene B. Doggett
                                 Title: Executive Vice President and Chief
                                        Financial Officer



                             IM-1 ACQUISITION CORP.


                             By: /s/ John P. Lawrence
                                 ----------------------------------
                                 Name: John P. Lawrence
                                 Title: Treasurer


                            SAFESITE RECORDS MANAGEMENT
                            CORPORATION

                             By: /s/ B. Thomas Golisano
                                 ----------------------------------
                                 Name: B. Thomas Golisano
                                 Title:  Chairman

                             By: /s/ James B. Wayman, Jr.
                                 ----------------------------------
                                 Name: James B. Wayman, Jr.
                                 Title:  President

<PAGE>

                                                                    EXHIBIT 2.6


                FORM OF AMENDMENT TO ACQUIROR'S RESTATED BY-LAWS

                                   ARTICLE XII

 RESTRICTIONS ON TRANSFER OF CERTAIN SHARES OF CAPITAL STOCK OF THE CORPORATION

         Section 1. Restrictions on Transfer. Any Person who receives any shares
of Common Stock of the Corporation (the "Merger Securities") issued pursuant to
the Agreement and Plan of Merger, dated as of February 19, 1997, by and among
the Corporation, IM-1 Acquisition Corp. and Safesite Records Management
Corporation, as amended (the "Merger Agreement"), shall not Transfer (as defined
herein), and the Corporation shall not be required to register the Transfer of,
the number of shares, rounded upward to the nearest whole share (the "Subject
Shares"), of the Merger Securities equal to the product of (1) the quotient
obtained by dividing (x) the "Lock-up Value" by (y) the product of (A) the
Common Stock Amount and (B) the lesser of the Closing Price and the
Determination Price multiplied by (2) the Stock Merger Consideration received by
such Person in connection with the Merger, until the first anniversary date of
the effective date of the Merger Agreement (the "Effective Time"), except as
otherwise allowed by the Board of Directors of the Corporation in its sole
discretion. The "Lock-up Value" shall mean one half (1/2) of the sum of (x) the
product of the Common Stock Amount and the lesser of the Closing Price and the
Determination Price plus (y) the Cash Amount. The "Closing Price" shall mean the
closing price per share of Acquiror Stock for the trading day immediately prior
to the Effective Time. The closing price for such trading day shall be the last
quoted sale price or, if not so quoted, the average of the low bid and high
asked prices on the Nasdaq National Market System. Capitalized terms used herein
and not otherwise defined shall have the meanings prescribed therefor in the
Merger Agreement. The term "Transfer" means any indirect or direct transfer,
offer to sell, sale, assignment, grant of an option to acquire, pledge, or other
disposition.

         Section 2. Legend on Stock Certificates. The Corporation shall note on
the certificates for the Subject Shares of Merger Securities issued upon
transfer that the shares represented by such certificates are subject to the
restrictions on transfer and registration of transfer imposed in this Article
XII.

         Section 3. Termination of Restrictions on Transfers. The provisions of
this Article XII shall terminate in their entirety on the first anniversary of
the Effective Time.



[LETTERHEAD]
                               SULLIVAN & WORCESTER LLP
                                ONE POST OFFICE SQUARE
                              BOSTON, MASSACHUSETTS 02109
                                    (617) 338-2800
                                 FAX NO. 617-338-2880
     IN WASHINGTON, D.C.                                   IN NEW YORK CITY
1025 CONNECTICUT AVENUE, N.W.                              767 THIRD AVENUE
   WASHINGTON, D.C. 20036                              NEW YORK, NEW YORK 10017
       (202) 775-8190                                       (212) 486-8200
    FAX NO. 202-293-2275                                 FAX NO. 212-758-2151

                                                                       EXHIBIT 5


                                  April 4, 1997



Iron Mountain Incorporated
745 Atlantic Avenue
Boston, Massachusetts 02111

Ladies and Gentlemen:

         In connection with the registration by Iron Mountain Incorporated, a
Delaware corporation ("Iron Mountain"), of shares (the "Shares") of Common
Stock, par value $.01 per share (the "Common Stock"), for issuance in connection
with the merger (the "Merger") of IM-1 Acquisition Corp., a Delaware corporation
and a wholly owned subsidiary of Iron Mountain ("Sub"), with Safesite Records
Management Corporation, a Delaware corporation ("Safesite"), pursuant to the
terms of an Agreement and Plan of Merger, dated as of February 19, 1997, as
amended, among Iron Mountain, Sub and Safesite (the "Merger Agreement"), this
opinion is furnished to you to be filed as Exhibit 5 to the Registration
Statement on Form S-4 (the "Registration Statement") under the Securities Act of
1933, as amended (the "Act") filed with the Securities and Exchange Commission
(the "Commission").

         We have acted as counsel to Iron Mountain in connection with the
preparation of the Registration Statement, and we have examined originals or
copies, certified or otherwise identified to our satisfaction, of the
Registration Statement, the Merger Agreement, the Amended and Restated
Certificate of Incorporation of Iron Mountain, as amended to date, corporate
records, certificates and statements of officers of Iron Mountain and of public
officials, and such other documents as we have considered necessary in order to
furnish the opinion hereinafter set forth. We express no opinion herein as to
any laws other than the General Corporation Law of the State of Delaware.

         Based upon and subject to the foregoing, we are of the opinion that the
Shares have been duly and validly authorized for issuance by the Board of
Directors of Iron Mountain and, when the Merger has been duly approved by the
stockholders of Safesite and a


<PAGE>


Certificate of Merger, reflecting the terms of the Merger Agreement, has been
duly filed with the Secretary of State of the State of Delaware, upon issuance
and delivery of certificates for the Shares against tender of certificates
evidencing shares of Common Stock, par value $.01 per share, of Safesite
outstanding at the Effective Time of the Merger (as established pursuant to the
Merger Agreement), in accordance with the procedure established in the Merger
Agreement, the Shares will be validly issued, fully paid and nonassessable by
Iron Mountain.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the references to our firm made therein under the
caption "Legal Matters". In giving such consent, we do not thereby admit that we
come within the category of persons whose consent is required under Section 7 of
the Securities Act or the Rules and Regulations of the Commission promulgated
thereunder.

                                Very truly yours,

                                /s/  Sullivan & Worcester LLP

                                SULLIVAN & WORCESTER LLP

                                                                    EXHIBIT 10.4


                           IRON MOUNTAIN INCORPORATED1

                            1995 STOCK INCENTIVE PLAN


         1. PURPOSE

         The purpose of this 1995 Stock Incentive Plan (the "Plan") is to
encourage key employees, directors, and consultants of Iron Mountain
Incorporated (the "Company") and its Subsidiaries (as hereinafter defined) to
continue their association with the Company, by providing favorable
opportunities for them to participate in the ownership of the Company and in its
future growth through the granting of awards ("Awards") of stock, stock options,
and other rights to compensation in amounts determined by the value of the
Company's stock. The term "Subsidiary" as used in the Plan means a corporation
of which the Company owns, directly or indirectly through an unbroken chain of
ownership, fifty percent (50%) or more of the total combined voting power of all
classes of stock.


         2. ADMINISTRATION OF THE PLAN

         The Plan shall be administered by the Board of Directors of the Company
(the "Board") or, in the discretion of the Board, a committee or subcommittee of
the Board (the "Committee"), appointed by the Board and composed of at least two
(2) members of the Board. In the event that a vacancy on the Committee occurs on
account of the resignation of a member or the removal of a member by vote of the
Board, a successor member shall be appointed by vote of the Board. All
references in the Plan to the "Committee" shall be understood to refer to the
Committee or the Board, whoever shall administer the Plan.

         For so long as Section 16 of the Securities Exchange Act of 1934, as
amended from time to time (the "Exchange Act"), is applicable to the Company,
each member of the Committee shall be a "non-employee director" or the
equivalent within the meaning of Rule 16b-3 under the Exchange Act, and, for so
long as Section 162(m) of the Internal Revenue Code of 1986, as amended from
time to time (the "Code"), is applicable to the Company, an "outside director"
within the meaning of Section 162 of the Code and the regulations thereunder.
The Committee shall select those persons to receive Awards under the Plan
("Participants") and determine the terms and conditions of all Awards.


- --------
     1 The number of shares set forth in Section 3 is subject to stockholder
approval. Such number is currently 1,000,000.


<PAGE>


                                       -2-

         The Committee shall select one of its members as Chairman and shall
hold meetings at such times and places as it may determine. A majority of the
Committee shall constitute a quorum, and acts of the Committee at which a quorum
is present, or acts reduced to or approved in writing by all the members of the
Committee, shall be the valid acts of the Committee. The Committee shall have
the authority to adopt, amend, and rescind such rules and regulations as, in its
opinion, may be advisable in the administration of the Plan. All questions of
interpretation and application of such rules and regulations, of the Plan and of
options granted thereunder (the "Options"), and of Common Stock transferred
subject to restrictions under the Plan ("Restricted Stock"), and stock
appreciation rights granted under the Plan ("SARs") (collectively, "Other
Rights") shall be subject to the determination of the Committee, which shall be
final and binding.

         With respect to persons subject to Section 16 of the Exchange Act
("Insiders"), transactions under the Plan are intended to comply with all
applicable conditions of Rule 16b-3 or its successor under the Exchange Act. To
the extent any provision of the Plan or action by the Committee fails to so
comply, it shall be deemed to be modified so as to be in compliance with such
Rule, or, if such modification is not possible, it shall be deemed to be null
and void, to the extent permitted by law and deemed advisable by the Committee.

         The Plan shall be administered in such a manner as to permit those
Options granted hereunder and specially designated under Section 5 to qualify as
incentive stock options as described in Section 422 of the Code.


         3. STOCK SUBJECT TO THE PLAN

         The total number of shares of stock which may be subject to Options and
Other Rights under the Plan shall be 1,400,000 of the Company's outstanding
Class A Common Stock, $0.01 par value per share, from either authorized but
unissued shares or treasury shares. For purposes of the limitation set forth in
the preceding sentence, options granted under the Iron Mountain Information
Services, Inc. Stock Option Plan and outstanding on the effective date of this
Plan shall be treated as Options. The number of shares stated in this Section 3
shall be subject to adjustment in accordance with the provisions of Section 11.
Shares of Restricted Stock that fail to vest, and shares of Common Stock subject
to an Option that is neither fully exercised prior to its expiration or other
termination nor terminated by reason of the exercise of an SAR related to the
Option, shall again become available for grant under the terms of the Plan.

         The total amount of the Common Stock with respect to which Options and
Other Rights may be granted to any single employee under the Plan shall not
exceed in the aggregate 250,000 shares.

         The Company intends that the Plan shall apply to "common stock"
proposed to be issued as a result of the Company's recapitalization in
connection with an offering of "common stock" proposed to be registered under
the Securities Act of 1933, as amended (the "Securities Act"), and intends that
the provisions of Section 11 of the Plan shall be construed so as to achieve
this result.



<PAGE>


                                       -3-

         4. ELIGIBILITY

         The individuals who shall be eligible for grant of Options and Other
Rights under the Plan shall be key employees, directors and other individuals
who render services of special importance to the management, operation, or
development of the Company or a Subsidiary, and who have contributed or may be
expected to contribute materially to the success of the Company or a Subsidiary.
Incentive stock options ("ISOs") shall not be granted to any individual who is
not an employee of the Company or a Subsidiary. The term "Optionee," as used in
the Plan, refers to any individual to whom an Option or Other Right has been
granted.


         5. TERMS AND CONDITIONS OF OPTIONS

         Every Option shall be evidenced by a written Stock Option Agreement in
such form as the Committee shall approve from time to time, specifying the
number of shares of Common Stock that may be purchased pursuant to the Option,
the time or times at which the Option shall become exercisable in whole or in
part, whether the Option is intended to be an ISO or a non-qualified stock
option ("NSO"), and such other terms and conditions as the Committee shall
approve, and containing or incorporating by reference the following terms and
conditions:

                  (a) Duration. The duration of each Option shall be as
         specified by the Committee in its discretion; provided, however, that
         no ISO shall expire later than ten (10) years from its date of grant,
         and no ISO granted to an employee who owns (directly or under the
         attribution rules of Section 424(d) of the Code) stock possessing more
         than ten percent (10%) of the total combined voting power of all
         classes of stock of the Company or any Subsidiary shall expire later
         than five (5) years from its date of grant.

                  (b) Exercise Price. The exercise price of each Option shall be
         any lawful consideration, as specified by the Committee in its
         discretion; provided, however, that the price with respect to an ISO
         shall be at least one hundred percent (100%) of the fair market value
         of the shares on the date on which the Committee awards the Option,
         which shall be considered the date of grant of the Option for purposes
         of fixing the price; and provided further that the price with respect
         to an ISO granted to an employee who at the time of grant owns
         (directly or under the attribution rules of Section 424(d) of the Code)
         stock representing more than ten percent (10%) of the voting power of
         all classes of stock of the Company or of any Subsidiary shall be at
         least one hundred ten percent (110%) of the fair market value of the
         shares on the date of grant of the ISO. For purposes of the Plan,
         except as may be otherwise explicitly provided in the Plan or in any
         Stock Option Agreement, Restricted Stock Agreement, SAR Agreement or
         similar document, the "fair market value" of a share of Common Stock at
         any particular date shall be determined according to the following
         rules: (i) if the Common Stock is not at the time listed or admitted to
         trading on a stock exchange or the Nasdaq National Market, the fair
         market value shall be the closing price of the Common Stock on the date
         in question in the over-the-counter market, as such price is reported
         in a publication of general circulation selected by the Board and
         regularly reporting the price of the Common Stock in such market;
         provided, however, that if the price of the Common Stock is not so
         reported, the fair market value shall be determined in good faith by
         the Board, which may take into


<PAGE>


                                       -4-

         consideration (1) the price paid for the Common Stock in the most
         recent trade of a substantial number of shares known to the Board to
         have occurred at arm's length between willing and knowledgeable
         investors, or (2) an appraisal by an independent party, or (3) any
         other method of valuation undertaken in good faith by the Board, or
         some or all of the above as the Board shall in its discretion elect; or
         (ii) if the Common Stock is at the time listed or admitted to trading
         on any stock exchange or the Nasdaq National Market, then the fair
         market value shall be the mean between the lowest and highest reported
         sale prices (or the lowest reported bid price and the highest reported
         asked price) of the Common Stock on the date in question on the
         principal exchange on which the Common Stock is then listed or admitted
         to trading. If no reported sale of Common Stock takes place on the date
         in question on the principal exchange or the Nasdaq National Market, as
         the case may be, then the reported closing sale price (or the reported
         closing asked price) of the Common Stock on such date on the principal
         exchange or the Nasdaq National Market, as the case may be, shall be
         determinative of fair market value.

                  (c) Method of Exercise. To the extent that it has become
         exercisable under the terms of the Stock Option Agreement, an Option
         may be exercised from time to time by written notice to the Chief
         Financial Officer of the Company or his designee stating the number of
         shares with respect to which the Option is being exercised and
         accompanied by payment of the exercise price in cash or check payable
         to the Company, or, if the Stock Option Agreement so provides, other
         payment or deemed payment described in this subsection 5(c). Such
         notice shall be delivered in person or by facsimile transmission to the
         Chief Financial Officer of the Company or his designee or shall be sent
         by registered mail, return receipt requested, to the Chief Financial
         Officer of the Company or his designee, in which case delivery shall be
         deemed made on the date such notice is deposited in the mail.

                  Alternatively, payment of the exercise price may be made:

                           (1) In whole or in part, in shares of Common Stock
                  already owned by the Optionee or to be received upon exercise
                  of the Option, provided that such shares are fully vested and
                  free of all liens, claims, and encumbrances of any kind;
                  provided, further, that the Optionee may not make payment in
                  shares of Common Stock that he acquired upon the earlier
                  exercise of any ISO, unless he has held the shares until at
                  least two (2) years after the date the ISO was granted and at
                  least one (1) year after the date the ISO was exercised. If
                  payment is made in whole or in part in shares of Common Stock,
                  then the Optionee shall deliver to the Company certificates
                  registered in his name representing a number of shares of
                  Common Stock legally and beneficially owned by him, fully
                  vested and free of all liens, claims, and encumbrances of
                  every kind and having a fair market value on the date of
                  delivery that is not greater than the exercise price, such
                  certificates to be duly endorsed, or accompanied by stock
                  powers duly endorsed, by the record holder of the shares
                  represented by such certificates. If the exercise price
                  exceeds the fair market value of the shares for which
                  certificates are delivered, the Optionee shall also deliver
                  cash or a check payable to the order of the Company in an
                  amount equal to the amount of that excess, or, if the Stock
                  Option


<PAGE>


                                       -5-

                  Agreement so provides, his promissory note as described in 
                  the next following paragraph of this subsection 5(c); or

                           (2) In whole or in part by delivery of the Optionee's
                  recourse promissory note, in a form specified by the Company,
                  secured by the Common Stock acquired upon exercise of the
                  Option and such other security as the Committee may require.

                  Alternatively, Options may be exercised by means of a
         "cashless exercise" procedure in which a broker: (i) transmits the
         option price to the Company in cash or acceptable cash equivalents,
         either (1) against the Optionee's notice of exercise and the Company's
         confirmation that it will deliver to the broker stock certificates
         issued in the name of the broker for at least that number of shares
         having a fair market value equal to the option price, or (2) as the
         proceeds of a margin loan to the Optionee; or (ii) agrees to pay the
         option price to the Company in cash or acceptable cash equivalents upon
         the broker's receipt from the Company of stock certificates issued in
         the name of the broker for at least that number of shares having a fair
         market value equal to the option price.

                  At the time specified in an Optionee's notice of exercise, the
         Company shall, without issue or transfer tax to the Optionee, deliver
         to him at the main office of the Company, or such other place as shall
         be mutually acceptable, a certificate for the shares as to which his
         Option is exercised. If the Optionee fails to pay for or to accept
         delivery of all or any part of the number of shares specified in his
         notice upon tender of delivery thereof, his right to exercise the
         Option with respect to those shares shall be terminated, unless the
         Company otherwise agrees.

                  (d) Reload Options. The Committee may, in its discretion,
         provide in the terms of any Stock Option Agreement that if the Optionee
         delivers shares of Common Stock already owned or to be received upon
         exercise of the Option in full or partial payment of the option price,
         or in full or partial payment of the tax withholding obligations
         incurred on account of the exercise of the Option, the Optionee shall,
         either automatically and immediately upon such exercise, or in the
         discretion of the Committee upon such exercise, be granted a new option
         (a "Reload Option") to purchase that number of shares of Common Stock
         delivered by the Optionee to the Company, on such terms and conditions
         as the Committee may determine under the terms of the Plan. The
         exercise price for shares subject to a Reload Option shall be not less
         than one hundred percent (100%) of the fair market value of the shares
         on the date of grant of the Reload Option, and the duration of a Reload
         Option shall be equal to the unexpired term of the exercised Option on
         the date of exercise.

                  (e) Notice of ISO Stock Disposition. The Optionee must notify
         the Company promptly in the event that he sells, transfers, exchanges
         or otherwise disposes of any shares of Common Stock issued upon
         exercise of an ISO, before the later of (i) the second anniversary of
         the date of grant of the ISO, and (ii) the first anniversary of the
         date the shares were issued upon his exercise of the ISO.



<PAGE>


                                       -6-

                  (f) Effect of Cessation of Employment. The Committee shall
         determine in its discretion and specify in each Stock Option Agreement
         the effect, if any, of the termination of the Optionee's employment
         upon the exercisability of the Option.

                  (g) No Rights as Stockholder. An Optionee shall have no rights
         as a stockholder with respect to any shares covered by an Option until
         the date of issuance of a certificate to him for the shares. No
         adjustment shall be made for dividends or other rights for which the
         record date is earlier than the date the certificate is issued, other
         than as required or permitted pursuant to Section 11.

                  (h) Substituted Option. With the consent of the Optionee, the
         Committee shall have the authority at any time and from time to time to
         terminate any outstanding Option and grant in substitution for it a new
         Option covering the same number or a different number of shares,
         provided that the option price under the new Option shall be no less
         than the fair market value of the Common Stock on the date of grant of
         the new Option.


         6. STOCK APPRECIATION RIGHTS

         The Committee may grant SARs in respect of such number of shares of
Common Stock subject to the Plan as it shall determine, in its discretion, and
may grant SARs either separately or in connection with Options, as described in
the following sentence. An SAR granted in connection with an Option may be
exercised only to the extent of the surrender of the related Option, and to the
extent of the exercise of the related Option the SAR shall terminate. Shares of
Common Stock covered by an Option that terminates upon the exercise of a related
SAR shall cease to be available under the Plan. The terms and conditions of an
SAR related to an Option shall be contained in the Stock Option Agreement, and
the terms of an SAR not related to any Option shall be contained in an SAR
Agreement.

         Upon exercise of an SAR, the Optionee shall be entitled to receive from
the Company an amount equal to the excess of the fair market value, on the
exercise date, of the number of shares of Common Stock as to which the SAR is
exercised, over the exercise price for those shares under a related Option, or
if there is no related Option, over the base value stated in the SAR Agreement.
The amount payable by the Company upon exercise of an SAR shall be paid in the
form of cash or other property (including Common Stock of the Company), as
provided in the Stock Option Agreement or SAR Agreement governing the SAR.

         All grants of SARs to Insiders shall be capable of being settled only
for cash and may not be granted in connection with an Option. If an SAR is
awarded to a person who is not an Insider at the time of award but subsequently
becomes an Insider, it shall be deemed to be amended to provide that it may be
settled only in cash while such person is an Insider.

<PAGE>


                                       -7-

         7. RESTRICTED STOCK

         The Committee may grant or award shares of Restricted Stock in respect
of such number of shares of Common Stock, and subject to such terms or
conditions, as it shall determine and specify in a Restricted Stock Agreement.

         A holder of Restricted Stock shall have all of the rights of a
stockholder of the Company, including the right to vote the shares and the right
to receive any cash dividends, unless the Committee shall otherwise determine.
Certificates representing Restricted Stock shall be imprinted with a legend to
the effect that the shares represented may not be sold, exchanged, transferred,
pledged, hypothecated or otherwise disposed of except in accordance with the
terms of the Restricted Stock Agreement, and, if the Committee so determines,
the Optionee may be required to deposit the certificates with an escrow agent
designated by the Committee, together with a stock power or other instrument of
transfer appropriately endorsed in blank.


         8. SPECIAL BONUS GRANTS AND LOANS

         In its discretion, the Committee may grant in connection with any NSO
or grant of Restricted Stock a special cash bonus in an amount not to exceed the
lesser of (i) the combined federal, state and local income tax liability
incurred by the Optionee as a consequence of his acquisition of stock pursuant
to the exercise of the NSO or the grant or vesting of the Restricted Stock, and
the related special bonus, or (ii) thirty percent (30%) of the imputed income
realized by the Optionee on account of such exercise or vesting and the related
special bonus. The Committee may, in its discretion, estimate the amount of the
tax liability described in clause (i) of the immediately preceding sentence,
using formulae or methods uniformly applied to Optionees in similar
circumstances, without regard to the particular circumstances of an individual
Optionee. A special bonus shall be payable solely to federal, state, and local
taxing authorities for the benefit of the Optionee at such time or times as
withholding payments of income tax may be required. A special bonus may be
granted simultaneously with a related NSO or Restricted Stock grant or
separately with respect to an outstanding NSO or Restricted Stock granted at an
earlier date. In the event that an NSO with respect to which a special bonus has
been granted becomes exercisable by the personal representative of the estate of
the Optionee, or that Restricted Stock with respect to which a special bonus has
been granted shall vest after the death of an Optionee, the bonus shall be
payable to or for the benefit of the estate in the same manner and to the same
extent as it would have been payable for the benefit of the Optionee had he
survived to the date of exercise or vesting.

         In the Committee's discretion, a Stock Option Agreement or Restricted
Stock Agreement may provide that to the extent that an Optionee does not receive
a special bonus of the maximum amount permissible under this Section 8, the
Company shall lend the Optionee an amount no greater than the excess of such
maximum over the special bonus (if any) paid to the Optionee, for such term and
at such rate of interest (or no interest) and on such further terms and
conditions as the Committee determines.

         9. OPTIONS AND OTHER RIGHTS VOIDABLE

<PAGE>


                                       -8-

         If an individual to whom a grant has been made fails to execute and
deliver to the Committee a Stock Option Agreement, SAR Agreement or Restricted
Stock Agreement within thirty (30) days after it is submitted to him, the Option
or Other Rights granted under the agreement shall be voidable by the Company at
its election, without further notice to the Optionee.


         10. REQUIREMENTS OF LAW

         The Company shall not be required to transfer any Restricted Stock or
to sell or issue any shares upon the exercise of any Option or SAR if the
issuance of such shares will result in a violation by the Optionee or the
Company of any provisions of any law, statute or regulation of any governmental
authority. Specifically, in connection with the Securities Act, upon the
transfer of Restricted Stock or the exercise of any Option or SAR the Company
shall not be required to issue shares unless the Board has received evidence
satisfactory to it to the effect that the holder of the Option or Other Right
will not transfer such shares except pursuant to a registration statement in
effect under the Securities Act or unless an opinion of counsel satisfactory to
the Company has been received by the Company to the effect that such
registration is not required. Any determination in this connection by the Board
shall be conclusive. The Company shall not be obligated to take any other
affirmative action in order to cause the transfer of Restricted Stock or the
exercise of an Option or SAR to comply with any law or regulations of any
governmental authority, including, without limitation, the Securities Act or
applicable state securities laws.


         11. CHANGES IN CAPITAL STRUCTURE

         In the event that the outstanding shares of Common Stock are hereafter
changed for a different number or kind of shares or other securities of the
Company, by reason of a reorganization, recapitalization, exchange of shares,
stock split, combination of shares or dividend payable in shares or other
securities, a corresponding adjustment shall be made by the Committee in the
number and kind of shares or other securities covered by outstanding Options and
Other Rights, and for which Options or Other Rights may be granted under the
Plan. Any such adjustment in outstanding Options or Other Rights shall be made
without change in the total price applicable to the unexercised portion of the
Option, but the price per share specified in each Stock Option Agreement or
agreement as to Other Rights shall be correspondingly adjusted; provided,
however, that no adjustment shall be made with respect to an ISO that would
constitute a modification as defined in Section 424 of the Code. Any such
adjustment made by the Committee shall be conclusive and binding upon all
affected persons, including the Company and all Optionees.

         If while unexercised Options or SARs remain outstanding under the Plan
the Company merges or consolidates with a wholly-owned subsidiary for the
purpose of reincorporating itself under the laws of another jurisdiction, the
Optionees will be entitled to acquire shares of Common Stock of the
reincorporated Company upon the same terms and conditions as were in effect
immediately prior to such reincorporation (unless such reincorporation involves
a change in the number of shares or the capitalization of the Company, in which
case proportional


<PAGE>


                                       -9-

adjustments shall be made as provided above) and the Plan, unless otherwise
rescinded by the Board, will remain the Plan of the reincorporated Company.

         Except as otherwise provided in the preceding paragraph, if while
unexercised Options or SARs remain outstanding under the Plan the Company merges
or consolidates with one or more corporations (whether or not the Company is the
surviving corporation), or is liquidated or sells or otherwise disposes of
substantially all of its assets to another entity, or upon a Change of Control
(as defined herein), then, except as otherwise specifically provided to the
contrary in an Optionee's Stock Option Agreement, SAR Agreement or Restricted
Stock Agreement, the Committee, in its discretion, shall amend the terms of all
outstanding Options and SARs so that either:

                  (i) after the effective date of such merger, consolidation,
                  sale or Change of Control, as the case may be, each Optionee
                  shall be entitled, upon exercise of an Option or SAR, to
                  receive in lieu of shares of Common Stock the number and class
                  of shares of such stock or other securities to which he would
                  have been entitled pursuant to the terms of the merger,
                  consolidation, sale or Change of Control if he had been the
                  holder of record of the number of shares of Common Stock as to
                  which the Option or SAR is being exercised, or shall be
                  entitled to receive from the successor entity a new stock
                  option or stock appreciation right of comparable value; or

                  (ii) all outstanding Options and SARs shall be cancelled as of
                  the effective date of any such merger, consolidation,
                  liquidation, sale or Change of Control, provided that each
                  Optionee shall have the right to exercise his Option or SAR
                  according to its terms during the period of twenty (20) days
                  ending on the day preceding the effective date of such merger,
                  consolidation, liquidation, sale or Change of Control; and in
                  addition to the foregoing, the Committee may in its discretion
                  amend the terms of an Option or SAR by cancelling some or all
                  of the restrictions on its exercise, to permit its exercise
                  pursuant to this paragraph (ii) to a greater extent than that
                  permitted on its existing terms; or

                  (iii) all outstanding Options and SARs shall be cancelled as
                  of the effective date of any such merger, consolidation,
                  liquidation, sale or Change of Control in exchange for
                  consideration in cash or in kind, which consideration in both
                  cases shall be equal in value to the value of those shares of
                  stock or other securities the Optionee would have received had
                  the Option been exercised (to the extent then exercisable) and
                  no disposition of the shares acquired upon such exercise had
                  been made prior to such merger, consolidation, liquidation,
                  sale or Change in Control, less the option price therefor.
                  Upon receipt of such consideration by the Optionee, his or her
                  Option shall immediately terminate and be of no further force
                  and effect. The value of the stock or other securities the
                  Optionee would have received if the Option had been exercised
                  shall be determined in good faith by the Committee, and in the
                  case of shares of the Common Stock of the Company, in
                  accordance with the provisions of Section 5(b).



<PAGE>


                                      -10-

         A "Change of Control" of the Company shall be deemed to have occurred
if any person (as such term is used in Section 13(d) and 14(d)(2) of the
Exchange Act) other than a trust related to an employee benefit plan maintained
by the Company becomes the beneficial owner (within the meaning of Rule 13d-3
under the Exchange Act) of fifty percent (50%) or more of the Company's
outstanding Common Stock, and within the period of twenty-four (24) consecutive
months immediately thereafter, individuals other than (a) individuals who at the
beginning of such period constitute the entire Board of Directors or (b)
individuals whose election, or nomination for election by the Company's
stockholders, was approved by a vote of at least two-thirds of the directors
then still in office who were directors at the beginning of the period, become a
majority of the Board of Directors.

         Except as expressly provided to the contrary in this Section 11, the
issuance by the Company of shares of stock of any class for cash or property or
for services, either upon direct sale or upon the exercise of rights or
warrants, or upon conversion of shares or obligations of the Company convertible
into such shares or other securities, shall not affect the number, class or
price of shares of Common Stock then subject to outstanding Options or SARs.


         12. FORFEITURE FOR DISHONESTY

         Notwithstanding anything to the contrary in the Plan, if the Board
determines, after full consideration of the facts presented on behalf of both
the Company and an Optionee, that the Optionee has been engaged in fraud,
embezzlement, theft, commission of a felony or proven dishonesty in the course
of his employment by the Company or a Subsidiary, which damaged the Company or
Subsidiary, or has disclosed trade secrets or other proprietary information of
the Company or a Subsidiary, (a) the Optionee shall forfeit all unexercised
Options and all exercised Options under which the Company has not yet delivered
the certificates, and (b) the Company shall have the right to repurchase all or
any part of the shares of Common Stock acquired by the Optionee upon the earlier
exercise of any Option, at a price equal to the amount paid to the Company upon
such exercise, increased by an amount equal to the interest that would have
accrued in the period between the date of exercise of the Option and the date of
such repurchase upon a debt in the amount of the exercise price, at the prime
rate(s) announced from time to time during such period in the Federal Reserve
Statistical Release Selected Interest Rates. The decision of the Board as to the
cause of an Optionee's discharge and the damage done to the Company or a
Subsidiary shall be final, binding, and conclusive. No decision of the Board,
however, shall affect in any manner the finality of the discharge of an Optionee
by the Company or a Subsidiary.


         13. MISCELLANEOUS

         (a) Nonassignability of Other Rights. No Other Rights shall be
assignable or transferable by the Optionee except by will or the laws of descent
and distribution. During the life of the Optionee, Other Rights shall be
exercisable only by the Optionee.

         (b) No Guarantee of Employment. Neither the Plan nor any Stock Option
Agreement, SAR Agreement or Restricted Stock Agreement shall give an employee
the right to continue in


<PAGE>


                                      -11-

the employment of the Company or a Subsidiary, or give the Company or a
Subsidiary the right to require an employee to continue in employment.

         (c) Tax Withholding. To the extent required by law, the Company shall
withhold or cause to be withheld income and other taxes with respect to any
income recognized by an Optionee by reason of the exercise or vesting of an
Option or Other Right, or a cash bonus paid in connection with such exercise or
vesting, and as a condition to the receipt of any Option or Other Right or
related cash bonus the Optionee shall agree that if the amount payable to him by
the Company and any Subsidiary in the ordinary course is insufficient to pay
such taxes, then he shall upon the request of the Company pay to the Company an
amount sufficient to satisfy its tax withholding obligations.

         Without limiting the foregoing, the Committee may in its discretion
permit any Optionee's withholding obligation to be paid in whole or in part in
the form of shares of Common Stock, by withholding from the shares to be issued
or by accepting delivery from the Optionee of shares already owned by him. The
fair market value of the shares for such purposes shall be determined as set
forth in Section 5(b). An Optionee may not make any such payment in the form of
shares of Common Stock acquired upon the exercise of an ISO until the shares
have been held by him for at least two (2) years after the date the ISO was
granted and at least one (1) year after the date the ISO was exercised. If
payment of withholding taxes is made in whole or in part in shares of Common
Stock, the Optionee shall deliver to the Company certificates registered in his
name representing shares of Common Stock legally and beneficially owned by him,
fully vested and free of all liens, claims, and encumbrances of every kind, duly
endorsed or accompanied by stock powers duly endorsed by the record holder of
the shares represented by such certificates. If the Optionee is subject to
Section 16(a) of the Exchange Act, his ability to pay his withholding obligation
in the form of shares of Common Stock shall be subject to such additional
restrictions as may be necessary to avoid any transaction that might give rise
to liability under Section 16(b) of the Exchange Act.

         (d) Use of Proceeds. The proceeds from the sale of shares pursuant to
Options or Other Rights shall constitute general funds of the Company.


         14. EFFECTIVE DATE, DURATION, AMENDMENT AND
               TERMINATION OF PLAN

         The Plan shall be effective as of November 30, 1995, subject to
ratification by (a) the holders of a majority of the outstanding shares of
capital stock present, or represented, and entitled to vote thereon (voting as a
single class) at a duly held meeting of the shareholders of the Company, or (b)
by the written consent of the holders of a majority (or such greater degree as
may be prescribed under the Company's charter, by-laws, and applicable state
law) of the capital stock of the issuer entitled to vote thereon (voting as a
single class) within twelve (12) months after such date. Options that are
conditioned upon such ratification of the Plan by the shareholders may be
granted prior to such ratification. The Committee may grant Options and Other
Rights under the Plan from time to time until the close of business on November
26, 2005. The Board may at any time amend the Plan, provided, however, that
without approval of the Company's stockholders there shall be no: (i) increase
in the total number of shares covered by


<PAGE>


                                      -12-


the Plan, except by operation of the provisions of Section 11, or the aggregate
number of shares of Common Stock which may be issued to any single employee;
(ii) change in the class of individuals eligible to receive Options or Other
Rights; (iii) reduction in the exercise price of any ISO; (iv) extension of the
latest date upon which any ISO may be exercised; (v) material increase of the
obligations of the Company or rights of any Optionee under the Plan or any
Option or Other Rights granted pursuant to the Plan; or (vi) other change in the
Plan that requires stockholder approval under applicable law. No amendment shall
adversely affect outstanding Options or Other Rights without the consent of the
Optionee. The Plan may be terminated at any time by action of the Board, but any
such termination will not terminate Options and Other Rights then outstanding,
without the consent of the Optionee.





                                                                   EXHIBIT 10.22

                                                                  CONFORMED COPY



                        ASSET PURCHASE AND SALE AGREEMENT

                                      among

                     IRON MOUNTAIN RECORDS MANAGEMENT, INC.
                                    as Buyer

                                       and

                      CHICAGO DATA DESTRUCTION CORPORATION
                                    as Seller

                                       and

                         John Mengel and John S. Mengel
        as the sole stockholders of Chicago Data Destruction Corporation



                                 March 12, 1997











<PAGE>

                                                     TABLE OF CONTENTS

<TABLE>


<S>      <C>      <C>                                                                                             <C>
         ARTICLE I         
                  DEFINITIONS 1...................................................................................1

         ARTICLE II

                  SALE AND PURCHASE OF SUBJECT ASSETS ............................................................4

         ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF SELLER AND STOCKHOLDERS ......................................8

         ARTICLE IV

                  REPRESENTATIONS AND WARRANTIES OF BUYER .......................................................14

         ARTICLE V

                  PRE-CLOSING AGREEMENTS ........................................................................16

         ARTICLE VI

                  CONDITIONS PRECEDENT TO OBLIGATION OF BUYER TO CLOSE ..........................................18

         ARTICLE VII

                  CONDITIONS PRECEDENT TO OBLIGATION OF SELLER ..................................................20



<PAGE>





         ARTICLE VIII

                  THE CLOSING....................................................................................21

         ARTICLE IX

                  POST-CLOSING MATTERS ..........................................................................22

         ARTICLE X

                  TERMINATION....................................................................................23

         ARTICLE XI

                  INDEMNIFICATION ...............................................................................24

         ARTICLE XII

                  MISCELLANEOUS PROVISIONS ......................................................................28





</TABLE>



<PAGE>



                                                 TABLE OF CONTENTS
                                                     (cont'd.)


Schedule 1.6     Certain Encumbrances
Schedule 1.7     Certain Excluded Assets
Schedule 1.13A   Principal Items of Owned Tangible Assets
Schedule 2.2(c)  Certain Contracts Assumed
Schedule 2.2(d)  Carton cost per unit
Schedule 2.3     Allocation
Schedule 3.3     Exceptions, Section 3.3
Schedule 3.4     Authorizations
Schedule 3.5     Encumbrances; Equipment Leases
Schedule 3.6     Certain contract issues; ten largest customers; oral agreements
Schedule 3.8     Litigation; Claims
Schedule 3.9     Exceptions to Compliance with Laws; Permits, Licenses
Schedule 3.10    List of Environmental Reports
Schedule 3.13    Benefit Plans
Schedule 3.15    Absence of Certain Changes
Schedule 3.17    Employment Agreements/Noncompetes
Schedule 3.18    Patents, Trademarks, Etc.
Schedule 3.21    Transactions with Interested Persons
Schedule 3.22    Records Storage Matters; Damaged materials
Schedule 3.23    Ordinary course exceptions
Exhibit 6.3      Noncompetition and Confidentiality Agreement
Exhibit 6.10     Opinion of Seller's Counsel
Exhibit 6.11     J. S. Mengel Employment Agreement
Exhibit 7.4      Opinion of Buyer's General Counsel



<PAGE>





                        ASSET PURCHASE AND SALE AGREEMENT


     THIS AGREEMENT ("Agreement") is made the 12th day of March, 1997 by and
among IRON MOUNTAIN RECORDS MANAGEMENT, INC., a Delaware corporation ("Buyer"),
CHICAGO DATA DESTRUCTION CORPORATION, an Illinois corporation ("Seller"), and
JOHN MENGEL AND JOHN S. MENGEL, each an individual (respectively "Mengel" and
"J. S. Mengel", and collectively the "Stockholders").

                                    RECITALS

     A. Seller is engaged in the business of providing records management,
storage and destruction services in the metropolitan area of Chicago, Illinois
under the trade names "Chicago Data Storage Systems", "Chicago Data
Micrographics", "Chicago Data" and "Chicago Data Destruction Corporation".

     B. The Stockholders are collectively the owners of all the issued and
outstanding capital stock of Seller, and join in this Agreement to confirm
certain representations, warranties and agreements of Seller herein, and to
indemnify Buyer in connection with certain matters.

     C. Buyer desires to purchase and assume, and Seller desires to sell and
delegate, substantially all the assets, and certain of the liabilities of Seller
on the terms and subject to the conditions contained in this Agreement.

     In consideration of the mutual covenants and agreements set forth herein,
and for other good and valuable consideration the receipt and sufficiency of
which are hereby acknowledged, Seller, the Stockholders and Buyer, intending to
be legally bound, agree as follows:

                               ARTICLE IARTICLE I
                                   DEFINITIONS

For purposes of this Agreement, certain terms used in this Agreement and not
otherwise defined herein shall have the meanings designated below:

Section 1.1 Agreement means all or any part of this Agreement, including
schedules, exhibits, and appendices, as any of the foregoing may be amended,
modified or supplemented in writing in accordance with the terms hereof from
time to time.

Section 1.2 Business means the paper and magnetic media records management,
storage and destruction businesses conducted by Seller in metropolitan Chicago,
Illinois under the trade names "Chicago Data Storage Systems", "Chicago Data
Micrographics", "Chicago Data" and "Chicago Data Destruction Corporation".






<PAGE>



Section 1.3 Closing means the occasion upon which the transactions contemplated
by this Agreement are carried out by the delivery of documents, payment of funds
and other actions contemplated herein, as described in Article VIII.

Section 1.4 Closing Date shall be April 1, 1997, or such other date as the
parties may agree.

Section 1.5 Effective Time means 12:00 a.m. in Chicago, Illinois on the Closing
Date.

Section 1.6 Encumbrances means any and all encumbrances, mortgages, security
interests, liens, Taxes, claims, liabilities, options, commitments, charges,
restrictions or other obligations of whatsoever kind, quantity or nature,
whether accrued, absolute, contingent or otherwise, which affect title to the
Subject Assets, except for the following (which shall not constitute
"Encumbrances" for purposes of this Agreement): (i) the matters set forth on
Schedule 1.6, (ii) liens for current Taxes and assessments not yet due and
payable or being contested in good faith (provided that Seller satisfactorily
indemnifies Buyer with respect to such contested matters), and (iii)
restrictions on use which do not materially impair the current use of the Real
Property.

Section 1.7 Excluded Assets means Seller's (i) cash, cash equivalents,
marketable securities or similar investments and sums in checking and depository
accounts, (ii) corporate records not related to the Business, (iii) refunds for
Taxes and insurance premiums, (iv) certain assets listed on Schedule 1.7, (v)
any insurance policies and deposits, refunds, prepaid premiums, or other
payments related thereto or arising thereunder, (vi) all claims, rights and
causes of action whatsoever, whether under insurance policies, claims for
contribution or indemnification, whether as a matter of tort, contract or
otherwise, from other parties which relate to any of the Excluded Assets or the
liabilities of Seller or the Business not assumed by Buyer pursuant to this
Agreement (the "Excluded Liabilities"), (vii) records, books, documents, files
or information of any kind to the extent relating to the Excluded Assets or the
Excluded Liabilities, and (viii) any assets held for the benefit of participants
and beneficiaries of any employee benefit plans, programs or arrangements
maintained or sponsored by Seller or the Business.

Section 1.8 Knowledge or the phrases "to the knowledge of" or "to the best of
Seller's knowledge", when used in reference to Seller, means (except as
otherwise stated herein) matters actually known by Mengel and/or J. S. Mengel.

Section 1.9 Lease means the lease dated July 24, 1995 between Midland Realty as
landlord and Seller as tenant pursuant to which Seller occupies the building at
1534 S. Western, Chicago, Illinois.

Section 1.10 Option means the Real Estate Option Agreement, whether existing on
the date hereof, or executed by optionor and optionee after the date hereof,
substantially in the form previously reviewed by Buyer, between A. M.
Investments, as optionor, and Seller as optionee, for land at the corner of
Roosevelt Road and Talman Avenue, Chicago, Illinois.

Section 1.11 Real Property means the land and improvements located at the
following addresses:

              (a)     1301 S. Rockwell Street, Chicago, Illinois;








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              (b)     1320 S. Rockwell Street, Chicago, Illinois; and
              (c)     2552 W. Ogden, Chicago, Illinois.

Section 1.12 S. Western Premises means the approximately 44,700 square foot
building at 1534 S. Western, Chicago, Illinois which Seller occupies under the
Lease.

Section 1.13 Subject Assets means Seller's interest as tenant in the Lease and
all of Seller's personal assets and properties of whatever kind, character and
description, and whether tangible, intangible, and wherever located, except for
the Excluded Assets,. The Subject Assets, which assets constitute all the
personal property and equipment owned or leased by Seller and used regularly in
the Business (other than the Excluded Assets and the Real Property), include the
following tangible personal property and interests:

     A. Tangible Assets means all tangible personal property owned or leased by
Seller and regularly used in the Business, such as inventory; computers,
computer peripherals and maintenance manuals; word processors; typewriters and
other business office machines and equipment; telephone systems; automobiles,
trucks and other vehicles; warehouse equipment; lifts; pallet jacks; racking and
shelving; furniture, furnishings, and office equipment; and supplies. Principal
items of Tangible Assets, including vehicles, are listed on Schedule 1.13A.

     B. Interests means all intangible property owned or leased by Seller and
regularly used in the Business to the extent assignable, including rights,
privileges, benefits and interests under all contracts, agreements, consents,
licenses and files and correspondence related thereto; computer software used or
useful in the Business; permits or certificates of occupancy; agreements, leases
and arrangements with respect to intangible or tangible property or interests
therein; confidentiality and non-competition agreements with employees, whether
oral or written and with third parties; consents; agreements with suppliers and
customers; deposits held by contract parties, including any security deposits
under the Lease; rights to refunds (other than refunds which are Excluded
Assets); accounts receivable; prepaid expenses; Seller's rights in and to the
trade names "Chicago Data Storage Systems"; "Chicago Data", "Chicago Data
Micrographics" and "Chicago Data Destruction Corporation", Seller's rights under
the Option; all financial and operating records related to the Business; and any
sales agent or sales affiliate agreements used in connection with the Business.
"Interests" also include all plans, blueprints, studies and other planning,
permitting and investigative work, and the embodiment thereof, related to the
development of the vacant lot adjacent to 1320 South Rockwell, Chicago,
Illinois.

     Buyer acknowledges that where an Interest is represented by a contract
right, Buyer's failure to assume such contract may mean that the Interest
associated therewith will not be available to Buyer.

Section 1.14 Taxes means any and all taxes, sums or amounts assessed or
assessable, levied and due by any federal, state or county or other local
governmental authority or agency, including without limitation, real and
personal property taxes, income taxes, whether measured by gross or net income
or profit, franchise, excise, sales and use taxes, employee withholding, social
security, unemployment taxes and any other taxes required to be paid by Seller,
including interest and penalties in respect thereof whether disputed or not, and
whether accrued, contingent, due, absolute, deferred, unknown or other, together
with any and all penalties, interests and additions to all such taxes, sums or
amounts.





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                     (ARTICLE II COMMENCES ON THE NEXT PAGE)









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                                   ARTICLE II
                       SALE AND PURCHASE OF SUBJECT ASSETS

Section 2.1           Sale and Transfer.

     (a) The Sale. Subject to the terms and conditions set forth in this
Agreement, Seller shall sell, convey, transfer, assign and deliver to Buyer, and
Buyer shall purchase and receive from Seller, at the Closing, free and clear of
all Encumbrances, all of the Subject Assets.

Section 2.2           Purchase Price; Assumption of Certain Obligations.

     (a) Purchase Price. The Purchase Price to be paid by Buyer for all the
Subject Assets shall be Seven Million Dollars ($7,000,000). Such amount,
adjusted as provided in Section 2.2.(d), is hereinafter referred to as the
"Purchase Price", and shall be paid in United States currency.

     (b) Payment of Purchase Price. The adjusted Purchase Price shall be paid to
Seller at the Closing by wire transfer of immediately available funds to such
account as Seller shall designate in writing not less than two business days
prior to the Closing Date.

     (c) Limited Assumption of Contracts and Obligations. Buyer shall assume no
obligations or liabilities of Seller other than the following. Buyer shall
assume and perform:

              (i) all obligations of Seller or the Business arising or accruing
after the Effective Time in respect of Seller's contracts, agreements,
obligations, commitments, and arrangements (1) as set forth on Schedule 2.2(c)
and (2) pursuant to which Seller or the Business is obligated or has agreed to
provide records management, storage or destruction services to any customers of
the Business;

              (ii) Seller's obligations under contracts for goods, supplies or
services used by the Business with respect to periods after the Effective Time,
provided that no such contract, agreement or arrangement assumed pursuant to
this subsection (ii) shall (y) require payment of more than $2,500 after the
Effective Time or (z) have a term extending more than 90 days after the
Effective Time;

              (iii) Seller's obligations pursuant to the Lease and the Option;
and

              (iv) Seller's obligation to (i) install a double check backflow
preventer on fire service feeding 2552 W. Ogden, and (ii) repair or shutdown a
currently inactive elevator at 2552 W. Ogden, as required by the notices of
violations described in Schedule 3.9, provided that the Buyer shall not be
required to pay greater than $25,000 for such installation, repair or shutdown
(and Seller shall reimburse Buyer for any excess cost).

     (d)      Seller to Pay Pre-Closing Expenses; Purchase Price Adjustments.

              (i) Seller shall be responsible for and pay when due all costs and
expenses of operating the Business incurred or accrued prior to the Effective
Time.






<PAGE>



              (ii) With respect to services received by Seller the billing
period for which extends across the Closing Date, Buyer and Seller shall make
adjustments to the Purchase Price so that Seller bears the costs of operating
the Business properly accruable under generally accepted accounting principles
("GAAP") in respect of the period prior to the Effective Time and Buyer bears
the cost thereof properly accruable under GAAP in respect of the period
commencing at the Effective Time and thereafter.

              (iii) The Purchase Price shall be increased by the amount paid by
Seller for computer hardware and software purchased during the six-month period
prior to closing, provided that the maximum amount of such increase shall not
exceed $30,000.

              (iv) In order to reimburse Seller for excess carton purchases, the
Purchase Price shall be (x) increased if and to the extent that Seller's carton
inventory on hand at the Effective Time exceeds 26,340 units; or (y) reduced if
and to the extent that Seller's carton inventory on hand at the Effective Time
is less than 26,340 units, in each case with an inventory mix that mirrors
usage, determined on the basis of the twelve-month historic trend. The
adjustment will be based on Seller's demonstrated per-unit cost for average 1996
usage as set forth on Schedule 2.2(d).

              (v) In order to reimburse Seller for excess shelving purchases,
the Purchase Price shall be (x) increased if and to the extent that open
shelving locations (i.e., constructed shelving locations which are not vacant
solely because an assigned carton is out on temporary retrieval) at the
Effective Time exceed 30,000 locations or (y) reduced if and to the extent that
open shelving locations at the Effective Time are less than 30,000 locations.
For purposes of this section, a "location" shall mean storage space for one 1.2
cubic foot carton 10"x12"x15". Seller has entered contracts with REB Steel
Equipment for provision and installation of Phase III of Seller's racking
system, as well as contracts with Acme Sprinkler Service and Commercial Light
Company and others for electrical and plumbing work related to the Phase III
racking. It is anticipated that, at closing, a portion of the Phase III racking
will have been installed but that additional racking and electrical and plumbing
work will not have been completed, and Seller will not have made final payment
to REB Steel and other contractors related to the Phase III work. Such Phase III
racking will be included for purposes of calculating open shelving locations at
the Effective Time. At closing Buyer will assume Seller's rights and
responsibilities with respect to all contracts regarding the Phase III
additional racking system to the extent work has not been completed or payment
has not been made to contractors. The adjustment in the Purchase Price with
respect to open locations which are part of the Phase III racking will be equal
to the per-unit costs related thereto which Seller has paid as of the Closing
Date, and the credit with respect to open locations which are not part of Phase
III racking will be based on Seller's demonstrated per unit cost for the unused
shelving. For purposes of the calculation of new open shelving locations, Seller
will receive credit for all deposits and other advance payments by Seller to
racking and shelving suppliers regardless of whether the shelving has been
erected or delivered as of the Closing Date; provided that the credit for
deposits or advance payments will be equal to the dollar amount of such deposits
or advances, and not the amount of shelving related to such deposit or advance.
Costs related to the Phase III racking system which Buyer assumes at the Closing
will be excluded from Purchase Price adjustments related thereto.

              (vi) The Purchase Price shall be increased by the amount of any
payments made by Seller to (i) negotiate, prepare and obtain the Option up to a
maximum of $5,000, including legal








<PAGE>



fees relating thereto, and (ii) investigate the property subject to the Option
(provided Buyer shall have approved such investigation expenditures in advance).

              (vii) Buyer shall receive a credit against the Purchase Price for
storage and services to be performed on or after the Effective Time in an amount
equal to the portion of any payment received by Seller for such services prior
to the Closing Date which relates to services to be performed after the Closing
Date.

Section 2.3 Allocation. The Purchase Price shall be allocated among the Subject
Assets as set forth on Schedule 2.3, and the parties shall report the
transactions contemplated hereby in a manner consistent with such allocation for
tax purposes.

Section 2.4 Seller's Employees. Buyer expects to offer employment to all of
Seller's employees, subject to pre-closing review of staffing levels and
employee job performance; provided that, except for J. S. Mengel, Buyer shall
not be obligated to offer employment to any employee of Seller in connection
with the acquisition of the Subject Assets, and such acquisition shall not grant
any employee of Seller a right of continued employment with Buyer. Any of
Seller's employees offered employment by Buyer shall be employed on
substantially the same terms as their employment with





<PAGE>



Seller. As of the Closing Date, Buyer shall provide coverage to those employees
of Seller who accept offers of employment with Buyer ("Transferred Employees")
under Buyer's normal employee benefit plans, programs or arrangements. For
purposes of determining eligibility and vesting, Buyer agrees that any
Transferred Employee's service with Seller shall be credited under the terms of
any of Buyer's employee benefit plans, programs or arrangements, to the extent
established, continued or otherwise sponsored after the Closing Date. Buyer
shall also extend coverage to all Transferred Employees under Buyer's health
benefits program without the imposition of any pre-existing condition exclusion.

Section 2.5 Prorations. Real estate Taxes, water, electricity, telephone, other
utility charges, and fuel and similar items shall be adjusted ratably as of the
Effective Time. If the amount of the Taxes regarding the Real Estate is not then
ascertainable, the adjustment thereof shall be on the basis of the amount of the
most ascertainable Taxes.

Section 2.6 Post-Closing Adjustment Date. Buyer and Seller shall make all
proration adjustments and payments arising under Sections 2.2(d) and 2.5, to the
extent known, on the Closing Date. On the date which is thirty days after the
Closing Date, Buyer and Seller shall make an appropriate additional net
adjustment by payment of one to the other to effect a final adjustment in the
Purchase Price. If any adjustments are at that date not determined, Buyer and
Seller shall agree in a writing as to the date and method of settlement of such
undetermined amounts. Notwithstanding Section 11.5, if Buyer and Seller are
unable to reach agreement regarding any unresolved adjustments and payments
pursuant to Section 2.2 or 2.5 by the sixtieth day subsequent to the Closing
Date, then the determination of such adjustments and payments shall be promptly
submitted to a mutually acceptable independent third party accounting firm who
shall resolve any such disputes and whose determination shall be final and
binding on the Buyer and Seller; provided, however, that such accounting firm
shall be instructed by Buyer and Seller to complete its determination of such
adjustments and amounts within 30 days of its engagement. The expenses of such
accounting firm shall be borne equally by Buyer and Seller.




                    (ARTICLE III COMMENCES ON THE NEXT PAGE)









<PAGE>



                                   ARTICLE III
           REPRESENTATIONS AND WARRANTIES OF SELLER AND STOCKHOLDERS

Seller and Stockholders jointly and severally represent and warrant to Buyer as
follows as of the date hereof:

Section 3.1 Organization and Good Standing. Seller is a corporation duly
organized, validly existing and in good standing under the laws of the State of
Illinois, and has all requisite corporate power and authority to own, operate,
sell and lease its properties and to carry on its business as presently
conducted. Seller has all requisite corporate power and authority to execute and
deliver, and perform its obligations under, this Agreement.

Section 3.2 Authorization. The execution and delivery of this Agreement and
performance by Seller of its obligations hereunder, and all transactions
contemplated hereby, have been duly and validly authorized by all necessary
corporate action. This Agreement has been, and the other agreements and
documents required to be delivered by Seller in accordance with the provisions
hereof (the "Seller's Documents") will be, duly executed and delivered on behalf
of Seller, by duly authorized officers of Seller; and this Agreement
constitutes, and the Seller's Documents when executed and delivered will
constitute, the valid and binding obligations of Seller, enforceable in
accordance with their respective terms, except as enforcement may be limited by
applicable bankruptcy, insolvency, reorganization or similar laws from time to
time in effect affecting creditor's rights generally and by legal and equitable
limitations on the availability of specific remedies.

Section 3.3 Compliance With Other Instruments. Neither the execution and
delivery by Seller of this Agreement and the Seller's Documents, nor the
consummation by Seller of the transactions contemplated hereby and thereby,
will, with or without the giving of notice or passage of time, or both, be
contrary to or violate, breach, or constitute a default under, or permit the
termination or acceleration of maturity of, or result in the imposition of any
lien, claim or encumbrance upon any property or asset of Seller pursuant to any
provision of, any note, bond, indenture, mortgage, deed of trust, evidence of
indebtedness or lease agreement, other agreement or instrument or any judgment,
order, injunction or decree by which Seller is bound, to which it is a party, or
to which the assets of Seller are subject and which will continue in force after
the Closing, except for (i) any of the foregoing set forth on Schedule 3.3, (ii)
consents of customers pursuant to their agreements and, (iii) such of the
foregoing which would not result in a material adverse effect on the Business
taken as a whole; nor is the effectiveness or enforceability of this Agreement
or such other documents adversely affected by any provision of the corporate
charter or by-laws of Seller.

Section 3.4 No Governmental or Other Authorization Required. No authorization or
approval of, or filing with, any governmental agency, authority or other body or
any other third persons will be required in connection with Seller's execution
and delivery of this Agreement or the consummation by either of the transactions
contemplated hereby and thereby other than (i) as set forth in Schedule 3.4,
(ii) the consent of any customers pursuant to their contracts, (iii) the consent
of any suppliers of goods or services to Seller whose contracts with Seller are
assumed by Buyer, and (iv) the consent of the directors and stockholders of
Seller (which have previously been obtained and are evidenced by Seller's and
Stockholders' execution hereof).





<PAGE>



Section 3.5 Title to Subject Assets; Sufficiency. Seller has, or at Closing will
have, good and marketable title to all the Subject Assets, free and clear of all
Encumbrances except as set forth on Schedule 3.5, which Schedule identifies
leases for vehicles and equipment as well as Encumbrances. Seller is not a party
to, nor are the Subject Assets subject to, any judgment, judicial order, writ,
injunction or decree that materially adversely affects the Subject Assets or the
use thereof by Seller. The Subject Assets (other than the Excluded Assets)
include all personal property regularly used by Seller in the operation of their
respective parts of the Business.

Section 3.6           Contracts.

              (a) Except as disclosed on Schedule 3.6, Part A, all material
contracts related to the Business (including all customer contracts) are in full
force and effect, valid and enforceable in accordance with their respective
terms against Seller and, to Seller's knowledge, against the other parties
thereto, and there are no existing defaults of Seller or events of default that,
with the giving of notice or lapse of time, or both, would constitute defaults
of Seller under any material contracts, nor are material amendments pending with
respect to any material contracts.

              (b) Approximately 20% of Seller's customers have executed storage
and service agreements with Seller which contain provisions that state that
Seller's liability in the event of the loss or destruction of, or damage to,
stored material is limited to $2.00 per cubic foot.

              (c) Schedule 3.6, Part C lists Seller's ten largest customers
(measured by storage revenue during the six-month period ended December 31,
1996), which are identified by customer number only. To the extent such
contracts are in writing, Seller has delivered a copy of the contract with each
such customer to Buyer.

              (d) Seller has provided Buyer with copies of all written
agreements which Seller has entered into with its customers.

              (e) Except as set forth on Schedule 3.6, Part E, Seller has no
oral agreements with customers which require Seller to provide storage or
services at no charge or at rates significantly below the average rates for such
services set forth in Seller's written customer contracts, except for immaterial
discounts and/or free services provided as incentives to certain accounts.

Section 3.7 Taxes. Seller has filed all federal, state and local income tax
returns, and Seller has filed all excise or franchise tax returns, real estate
and personal property tax returns, sales and use tax returns and other tax
returns (including returns in respect of withholding and unemployment tax),
required to be filed by it and has paid all taxes owing by it, including any
interest and penalties thereon, except taxes which have not yet accrued or
otherwise become due for which adequate provision has been made.

Section 3.8 Litigation; Claims; Defaults. Except as set forth in Schedule 3.8,
Seller has not been served with any currently effective summons or complaint and
there is no action or suit, equitable or legal, to which Seller is a party, nor
any administrative, arbitration or other proceeding pending or, to Seller's
knowledge, threatened against Seller in respect of the Subject Assets or the
Business. Except as set forth on Schedule 3.8, during the past six months Seller
has not received any material written assertions from customers of the Business
to the effect that their materials








<PAGE>



stored with Seller have been lost, damaged or inappropriately destroyed or that
such customers are being billed inaccurately for storage of materials or
records. Seller is not in default with respect to any currently effective
judgment, order, writ, injunction, decree, demand or assessment issued by any
court or of any federal, state, municipal or other governmental agency, board,
commission, bureau, instrumentality or department and applicable to Seller.
Seller is not charged or to Seller's knowledge threatened with or under
investigation with respect to, any violation of any provision of any federal,
state, municipal or other law or administrative rule or regulation with respect
to the Subject Assets or the Business.

Section 3.9 Compliance with Laws. Except as set forth on Schedule 3.9A, Seller
has complied, and through the Closing will continue to comply, in all material
respects with federal, state and local laws, rules and regulations applicable to
the Business and the Subject Assets. Except as set forth on Schedule 3.9A, to
Seller's knowledge, Seller possesses such certificates, authorities or permits
issued by the appropriate local, state or federal regulatory agencies or bodies
as are necessary to conduct the Business in material compliance with all such
laws; Schedule 3.9B contains a list of all such certificates, authorities or
permits which Seller possesses regarding the Business; and Seller has not
received any written notice of proceedings relating to the revocation or
modification of any such certificate, authority or permit.

Section 3.10 Certain Environmental Matters. Except as set forth on Schedule
3.10, the Business is in material compliance with all applicable local, state
and federal environmental laws, regulations and ordinances, including, but not
limited to, the Comprehensive Environmental Response, Compensation, and
Liability Act, 42 U.S.C. ss.ss.9601 et seq. ("CERCLA"), the Resource
Conservation and Recovery Act, 42 U.S.C. ss.ss.6901 et seq., the Clean Water
Act, 33 U.S.C. ss.ss.1251 et seq., and the environmental laws and regulations of
the State of Illinois as such statutes or regulations have been amended from
time to time ("Environmental Laws and Regulations"). Seller has not knowingly
accepted for storage, and to the best of its knowledge does not store, any
nitrate film or any hazardous substance or hazardous material in the Premises
except for de minimis amounts used in the ordinary course of the Business.
Seller has never knowingly caused the release from the Premises of an amount of
any hazardous substance or hazardous material into the environment which release
would constitute a material violation of any Environmental Laws and Regulations.
For purposes of this paragraph, "hazardous substance", "release" and
"environment" shall have the same meanings as those terms are defined by Section
101 of CERCLA, 42 U.S.C. ss.9601, and "hazardous material" shall have the same
meaning as those terms are defined by Environmental Laws and Regulations. Except
as may be referenced in the environmental surveys listed in Schedule 3.10,
Seller does not own, lease, rent or otherwise utilize any underground storage
tanks in connection with the Business, and, to the best of Seller's knowledge,
there are no waste tanks, containers, cylinders, drums or cans buried, stored or
deposited in or at the S. Western Premises or the Real Property. To the best of
Seller's knowledge (without having conducted an investigation), except as may be
referenced in the environmental surveys listed in Schedule 3.10, the S. Western
Premises and the Real Property do not contain (i) any asbestos, (ii) any
polychlorinated biphenyl (PCB) substances or (iii) any waste petroleum products.
Seller has delivered to Buyer copies of all environmental surveys in Seller's
possession related to the S. Western Premises and/or the Real Property, all of
which are identified in Schedule 3.10.






<PAGE>



Section 3.11 No Inconsistent Agreements. Seller has not entered into any letter
of intent, preliminary agreement or other agreement, written or oral, with any
other party which would be inconsistent with the terms of this Agreement.

Section 3.12 Financial Statements. Seller has previously delivered to Buyer
Seller's annual income and expense statement and balance sheet with respect to
the Business for the years ended December 31, 1996, 1995 and 1994 and for the
month ended January 31, 1997 (the "Financial Statements"). The Financial
Statements are true, correct and complete in all material respects for the
periods covered and fairly present the results of operation of the Business for
the periods covered. The Financial Statements for the month ended January 31,
1997 were prepared on a basis consistent with the Financial Statements for the
year ended December 31, 1996.

Section 3.13 ERISA Plans. Schedule 3.13 lists the Employee Pension Benefit Plans
or Employee Welfare Benefit Plans, as each term is defined in the Employee
Retirement Income Security Act of 1974, maintained by Seller for the employees
of the Business.

Section 3.14 Condition of Subject Assets. All the material tangible Subject
Assets are at present, and will be as of the Closing Date, in good operating
condition, normal wear and tear excepted, and Seller has not received written
notice of any violation of the Occupational Safety and Health Act with respect
thereto, or rules and regulations issued thereunder which has not been resolved.

Section 3.15 Absence of Certain Changes. Except as disclosed on Schedule 3.15,
since July 1, 1996, none of Seller's customers whose business averaged in excess
of $1,000 per month for the six months ending December 31, 1996 has terminated
or indicated in writing (or, to the best of Seller's knowledge, orally) an
intention to terminate its business with, or reduce the volume of its business
with, Seller. Except as otherwise stated in Schedule 3.15, to Seller's
knowledge, none of Seller's customers listed on Schedule 3.6C have made their
storage business the subject of competitive bidding procedures within 90 days
prior to the date of this Agreement.

Section 3.16 No Material Undisclosed Liabilities. Except as described in this
Agreement or reflected in the Financial Statements, there is no liability or
obligation of Seller related to the operation of the Business, whether accrued,
absolute or contingent, other than liabilities and obligations that have been
incurred in the ordinary course of business consistent with past practice since
December 31, 1996 and are not material in the aggregate to the Business.

Section 3.17 Personnel Information. Seller has previously provided Buyer with a
list of the names of all full- and part-time employees of Seller (or leased
employees utilized by Seller) who perform services for the Business and a brief
job description or title and compensation for each such person, which list will
be updated by Seller as of a date not more than 5 days prior to the Closing
Date. Schedule 3.17 sets forth a list of all written and oral employment and
noncompetition agreements with Seller's employees employed in the Business.

Section 3.18 Patents, Trademarks, Etc. Except as set forth on Schedule 3.18,
Seller has no trademarks, service marks, registered copyrights, , patents or
other similar intangible property rights and interests which it uses in
connection with the Business.









<PAGE>



Section 3.19 Labor Relations. During the past three years there has not been,
and there is not now, any strike, labor dispute, slow down, stoppage, or other
material interference with or impairment by labor of the Business pending or, to
the knowledge of Seller (without investigation), threatened or contemplated
against or directly affecting the Business. Seller's employees are not
represented by any labor or trade union, nor, to the knowledge of Seller, has
there been any attempt to organize Seller's employees who perform services for
the Business during the three-year period prior to the date hereof.

Section 3.20 Trade Secrets and Customer Lists. Seller has received no written
claims challenging its right to use any trade secrets, customer lists,
intellectual property and operating methods required for or incident to the
operation of the Business. To the best of its knowledge (without investigation),
Seller is not using or in any way making use of any confidential information or
trade secrets of any third party, including without limitation, a former
employer of any present or past employee of Seller.

Section 3.21 Transactions with Interested Persons. Except as set forth on
Schedule 3.21, Seller is not an affiliate of any customer, competitor or
supplier of the Business, or any organization which has a material contract or
arrangement with the Business.

Section 3.22          Records Services and Storage.

              (a) Substantially all items received and stored by Seller on
behalf of customers (singly or in the aggregate) are held in storage by Seller
and are locatable and accessible without extraordinary effort except for items
withdrawn or destroyed at the respective customer's request.

              (b) To Seller's knowledge, substantially all items received by
Seller from customers have been logged into Seller's bar-coded computer
inventory system and can be located through use of such inventory system.

              (c) The stored items for which customers are billed exist and, in
all material respects, can be accounted for.

              (d) Except as set forth on Schedule 3.22, Seller invoices its
customers for special projects, such as purges and re-boxing programs, only with
respect to completed work. Seller has completed all destructions and other
inventory and special-service projects for which Seller has been paid.

              (e) To Seller's knowledge, except as set forth on Schedule 3.22 no
customer records in storage have suffered material damage (including damage from
water) or been wrongfully destroyed except where the owner of such records has
been promptly notified of such event.

              (f) Seller has shelved or refiled all records received for filing
or refiling more than two business days prior to the date hereof.

Section 3.23 Business in Ordinary Course. Except as set forth on Schedule 3.23,
from December 31, 1996 until the date hereof, the Business has been conducted in
the ordinary course in





<PAGE>



accordance with past practice. Without limiting the generality of the foregoing,
except as set forth on Schedule 3.23, Seller has not, since December 31, 1996.

                      (i) mortgaged or pledged any of its property or assets;

                      (ii) sold, assigned, transferred or waived rights with
respect to any material part of the Subject Assets (except in the ordinary
course of business);

                      (iii) entered into or adopted any employee benefit plan or
any employment or severance agreement, or increased in any manner the
compensation or fringe benefits of its officers or employees (except in the
ordinary course of business and consistent with past practice or pursuant to
pre-existing agreements or as required by law);

                      (iv) changed its billing, accounts payable, collections or
other cash management practices; or

                      (v)      agreed to take any of the foregoing actions.

Section 3.24 No Material Adverse Change. There has been no material adverse
change in the Subject Assets (including, without limitation, loss of or damage
to a material amount or part of the Subject Assets) or the results of operation
(including operating cash flow) of the Business, other than possible
industry-wide changes, as to which Seller makes no representation, between
December 31, 1996 and the date hereof.




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                                   ARTICLE IV
                     REPRESENTATIONS AND WARRANTIES OF BUYER

Buyer hereby represents and warrants to Seller as follows:

Section 4.1 Organization and Good Standing. Buyer is a corporation duly
organized, validly existing and in good standing under the laws of the State of
Delaware. Buyer possesses all requisite corporate power and authority to own,
operate and lease its properties and carry on its business, and to execute and
deliver, and perform its obligations under, this Agreement.

Section 4.2 Authorization. The execution and delivery of this Agreement and
performance by Buyer of its obligations hereunder, and all transactions
contemplated hereby, have been duly and validly authorized by all necessary
corporate action. This Agreement has been, and the other agreements and
documents required to be delivered by Buyer in accordance with the provisions
hereof (the "Buyer's Documents") will be, duly executed and delivered on behalf
of Buyer by duly authorized officers of Buyer; and this Agreement constitutes,
and Buyer's Documents when executed and delivered will constitute, the valid and
binding obligations of Buyer, enforceable in accordance with their respective
terms, except as enforcement may be limited by applicable bankruptcy,
insolvency, reorganization or similar laws from time to time in effect affecting
creditor's rights generally and by legal and equitable limitations on the
availability of specific remedies.

Section 4.3 Compliance with Other Instruments. Neither the execution and
delivery by Buyer of this Agreement and the Buyer's Documents, nor the
consummation by Buyer of the transactions contemplated hereby and thereby, will,
with or without the giving of notice or passage of time, or both, be contrary to
or violate, breach, or constitute a default under, or permit the termination or
acceleration of maturity of, or result in the imposition of any lien, claim or
encumbrance on any property or asset of Buyer pursuant to any provision of, any
note, bond, indenture, mortgage, deed of trust, evidence of indebtedness or
lease agreement, other agreement or instrument or any judgment, order,
injunction or decree by which Buyer is bound, to which Buyer is a party, or to
which the assets of Buyer are subject; nor is the effectiveness or
enforceability of this Agreement or such other documents adversely affected by
any provision of the certificate of incorporation or by-laws of Buyer.

Section 4.4 Litigation. There is no action, suit or proceeding pending or, to
the knowledge of Buyer, threatened against Buyer which might interfere with its
ability to consummate the transactions contemplated hereunder.

Section 4.5 No Governmental or Other Authorization Required. No authorization or
approval of, or filing with, any governmental agency, authority or other body or
any other third persons will be required in connection with Buyer's execution
and delivery of this Agreement and Buyer's Documents or its consummation of the
transactions contemplated hereby and thereby.

Section 4.6 Financial Ability. Buyer has the financial ability to consummate the
transactions contemplated by this Agreement and the other agreements to be
entered into in connection herewith, and has furnished, or will furnish, Seller
with satisfactory written evidence thereof.







<PAGE>



Section 4.7 Seller's Representations and Warranties. Buyer has no reason to
believe that any of Seller's representations and warranties made in this
Agreement are false, incorrect, misleading or inaccurate in any respect. In
connection with its due diligence investigation of Seller and the Business,
Buyer will advise Seller in writing if the preceding sentence ceases to be
accurate.



                     (ARTICLE V COMMENCES ON THE NEXT PAGE)









<PAGE>



                                    ARTICLE V
                             PRE-CLOSING AGREEMENTS

Section 5.1 Access to Information and Facilities. Seller shall afford Buyer and
its representatives full access upon reasonable notice during normal business
hours to all facilities, properties, books, accounts, records, contracts and
documents of or relating to the Business in Seller's possession or control,
subject to reasonable requirements that Buyer not interfere with the operations
and activity of the Business, and further provided that Seller shall not be
required to violate any obligation of confidentiality to customers to which it
may be subject in discharging its obligations pursuant to this Section 5.1.

Section 5.2           Confidentiality.

              (a) Seller and Buyer shall not use or disclose to others, or
permit the use or disclosure of, any and all non-public information furnished by
each to the other (including confidential information transmitted by each to its
representatives, accountants, counsel, advisors or bankers) in the course of
negotiations relating to this Agreement and the business and financial reviews
and investigations referred to in this Agreement, except to their respective
officers, directors, employees and representatives who need to know such
information in connection with this Agreement or except to the extent that any
such information may become generally available to the public other than through
the actions of the parties or any other person under a duty of confidentiality.
Such obligation of confidentiality extends to the additional financial
statements described in Section 5.3.

              (b) Notwithstanding the foregoing, Buyer's parent, Iron Mountain
Incorporated ("IMI"), shall have the right to include disclosure regarding the
transactions contemplated by this Agreement if required by law in any filing
required or made under the Securities Act of 1933, the Securities Exchange Act
of 1934 or any listing agreement for its securities, and Buyer and IMI shall
provide Seller with reasonable advance written notice of such disclosure and
shall cooperate with Seller in addressing any reasonable concerns Seller may
have regarding such disclosure. Buyer does not currently anticipate making any
such disclosure prior to the Closing Date (other than a reference to a
transaction in which the city and the target entity are not named) and will
notify Seller promptly in writing if Buyer decides that any such disclosure is
necessary.

              (c) In the event that the sale contemplated by this Agreement is
not consummated for any reason, each party agrees to return to the other party
all materials containing nonpublic information provided by the other immediately
on request. The confidentiality obligation set forth in this Section 5.2 shall
survive termination of this Agreement.

              (d) Each party agrees that the confidential information of the
other party is unique and that its release or misuse in contravention of the
terms of this Agreement may not be compensable in monetary damages and that the
non-breaching party shall be entitled to seek appropriate injunctive relief
therefor. In connection therewith the parties waive the claim or defense that an
adequate remedy exists at law or that a bond is necessary.

Section 5.3 Additional Financial Statements. In the event that IMI, Buyer or any
of their respective affiliates is required by any law (including securities
laws), statute or regulation to file or





<PAGE>



disclose financial information (including filings related to the registration of
securities of IMI, Buyer or any of their respective affiliates) related to the
Business which is in addition to information prepared by Seller and previously
delivered to Buyer, Seller shall make available to Buyer any relevant
information related to the Business or the Subject Assets not previously
delivered to Buyer and otherwise cooperate with Buyer, at Buyer's expense, in
preparing such information. If requested by Buyer, Seller shall consent to
Seller's auditors' preparing required audits for Buyer; and Buyer shall have the
right to file and disclose such information as required by any such law, statute
or regulation, including, without limitation, as contemplated by Section 5.2(b)
hereof.

Section 5.4 Communications to Seller's Employees and Customers. Buyer and Seller
shall mutually agree on the timing and content of a program of communications to
employees and customers of the Business in respect of the transactions
contemplated hereby; provided that Seller may elect to inform its employees of
the pending transaction if it determines such disclosure is necessary or
desirable.

Section 5.5 Continued Efforts. Seller shall use commercially reasonable efforts
to (a) cause to be fulfilled and satisfied all of the conditions to the Closing
which are the responsibility of Seller; (b) cause to be performed all of the
matters required upon the Closing which are the responsibility of Seller; and
(c) take such steps and do such acts as may be reasonably necessary to make all
of its warranties and representations true and correct as of the Closing Date
with the same effect as if the same had been made, and this Agreement had been
dated, as of the Closing Date.

Buyer shall use commercially reasonable efforts to (a) cause to be fulfilled and
satisfied all of the conditions to the Closing which are the responsibility of
Buyer; (b) cause to be performed all of the matters required upon the Closing
which are the responsibility of Buyer; and (c) take such steps and do such acts
as may be reasonably necessary to make all of its warranties and representations
true and correct as of the Closing with the same effect as if the same had been
made, and this Agreement had been dated, as of the Closing Date.

Section 5.6 Operation of Business Prior to Closing. From the date hereof until
the Closing Date, Seller shall conduct the Business in the ordinary course
consistent with past practice, and shall use its commercially reasonable efforts
to maintain and service the Business, to keep available the services of present
employees and agents and to maintain existing business relationships. Without
limiting the generality of the foregoing, Seller shall not take any of the
actions described in clauses (i) through (v) of Section 3.23.

Section 5.7 Concerning the Option. Seller shall use its reasonable efforts to
cooperate with Buyer in undertaking all investigations, planning and
examinations which Buyer reasonably determines are necessary and/or appropriate
to evaluate the property subject to the Option. Buyer shall pay for all
investigations, examinations, planning, architectural and design work undertaken
at Buyer's request in connection with the property subject to the Option. Buyer
shall make the results of all such work available to Seller. In the event that
the transactions contemplated by this Agreement do not close, and Seller
exercises the Option, Seller will reimburse Buyer for Buyer's reasonable
expenditures with respect to evaluating the property subject to the Option.

During the term of this Agreement, Seller shall not terminate, amend or
otherwise adversely affect its rights under the Option without Buyer's prior
written consent.








<PAGE>



                     (ARTICLE VI COMMENCES ON THE NEXT PAGE)






<PAGE>



                                   ARTICLE VI
              CONDITIONS PRECEDENT TO OBLIGATION OF BUYER TO CLOSE

The obligation of Buyer to purchase the Subject Assets and carry out the other
transactions contemplated hereby are, unless waived in writing by Buyer, subject
to the satisfaction, on the Closing Date, of the following conditions:

Section 6.1 Accuracy of Representations and Performance of Seller. The
representations and warranties of Seller contained in Article III of this
Agreement (other than Section 3.24) shall be true and correct in all material
respects at and as of the Closing Date with the same force and effect as though
made on and as of such date, except to the extent that such representations and
warranties are updated pursuant to updated Schedules provided by Seller or shall
be incorrect as of the Closing Date because of events or changes occurring in
the ordinary course of business of Seller or as otherwise permitted by this
Agreement, none of which, singly or in the aggregate, constitutes a material
adverse change (within the meaning of Section 6.9); each and all of the
conditions and covenants to be performed or satisfied by Seller hereunder at or
prior to the Closing Date shall have been duly performed or satisfied in all
material respects; and Seller shall have furnished Buyer with a certificate to
that effect.

Section 6.2 Absence of Certain Litigation. On the Closing Date, no suit, action
or other proceeding, or injunction or final judgment relating thereto, shall be
pending before any court or governmental or regulatory official or agency, in
which it is sought to restrain or prohibit or to obtain damages or other relief
from Buyer in connection with this Agreement or the consummation of the
transactions contemplated hereby (provided that any such suit, action or other
proceeding which would not have a material effect on the transactions
contemplated hereby shall not constitute a failure to satisfy this condition).

Section 6.3 Noncompetition and Confidentiality Agreement. Seller, and the
Stockholders shall have each executed and delivered a Noncompetition and
Confidentiality Agreement in the form of Exhibit 6.3 under which each agrees not
to engage in the records management business in the State of Illinois for a
period of five years.

Section 6.4 S. Western Lease. Seller shall have assigned to Buyer, Seller's
obligations as tenant under the Lease in respect of periods after the Effective
Time, and the landlord under the Lease shall have consented thereto.

Section 6.5 Real Property Purchase and Sale Agreement.. Buyer shall have
purchased the Real Property pursuant to agreements with Illinois Land Trust,
American National Bank as land trustee, trust number 110045-04 dated December
29, 1989 and trust number 66431 dated January 6, 1986.

Section 6.6           Option.  Seller shall have assigned the Option to Buyer.

Section 6.7 Evidence of Corporate Approval. Seller shall deliver certified
copies of resolutions adopted by its Board of Directors and stockholders,
pertaining to the authorization of this Agreement and the consummation of the
transactions contemplated hereby, and a certificate executed by the secretary or
assistant secretary of Seller as to the due election, qualification and
incumbency








<PAGE>



and valid signature of the person or persons authorized to sign on its behalf
this Agreement or any document, instrument or certificate to be delivered
hereunder.

Section 6.8 Encumbrances. Seller shall have delivered evidence reasonably
satisfactory to Buyer of the satisfaction and release of any Encumbrances
materially affecting, or security interests or liens materially encumbering, the
Subject Assets.

Section 6.9 No Material Adverse Change. There shall have been no material
adverse change in the Subject Assets (including, without limitation, loss of or
damage to a material amount or part of the Subject Assets) or the results of
operations (including operating cash flow) between December 31, 1996 and the
Closing Date, other than (x) changes resulting from developments or occurrences
relating to or affecting the United States economy in general or the industry of
the Business in general and not specifically relating to the Business, and (y)
changes that are the result of actions taken by Buyer prior to the Closing Date
or as contemplated herein that have an effect on the Business, including without
limitation any disruptions to the Business as a result of the execution of this
Agreement, Buyer's announcement of its intent to purchase the Business or the
announcement by Seller of its intent to sell the Business, and the consummation
of the transactions contemplated hereby. If at the Closing Date the Subject
Assets shall have suffered loss, damage or destruction to an extent which
materially affects Buyer's ability to conduct the Business (other than as
described in (x) or (y) in the preceding sentence), and such loss is not
adequately covered by insurance, Buyer shall have the right at its election to
terminate this Agreement (in which event the real estate purchase agreements
referenced in Section 6.5 shall also be automatically terminated), or complete
the transactions with such adjustment of the Purchase Price as may be agreed in
good faith between Buyer and Seller.

Section 6.10 Opinion of Seller's Counsel. Seller shall have delivered the
opinion of Seller's counsel, Gardner, Carton & Douglas, in the form of Exhibit
6.10 hereto.

Section 6.11 J. S. Mengel Employment Agreement. J. S. Mengel and Buyer shall
have entered an employment agreement in the form of Exhibit 6.11.

Section 6.12 Further Documents. Seller shall have executed and delivered to
Buyer such documents, instruments, agreements, and certificates as may
reasonably be needed to carry out the transactions contemplated by this
Agreement, including such documents, instruments and agreements as Buyer's
general counsel may reasonably request in connection therewith.





                    (ARTICLE VII COMMENCES ON THE NEXT PAGE)






<PAGE>



                                   ARTICLE VII
                  CONDITIONS PRECEDENT TO OBLIGATION OF SELLER

The obligation of Seller to sell, assign, transfer and deliver the Subject
Assets to Buyer hereunder and to carry out the other transactions contemplated
hereby are, unless waived in writing by Seller, subject to the satisfaction at
or prior to the Closing Date of the following conditions:

Section 7.1 Accuracy of Representations and Performance of Conditions. The
representations and warranties of Buyer contained in this Agreement shall be
true and correct in all material respects at and as of the Closing Date with the
same force and effect as though made on and as of such Date; each and all of the
conditions and covenants to be performed or satisfied by Buyer hereunder at or
prior to the Closing Date shall have been duly performed or satisfied in all
material respects; and Buyer shall have furnished Seller with Buyer's
certificate to that effect.

Section 7.2 Approval. Buyer shall deliver certified copies of resolutions
adopted by Buyer's Board of Directors pertaining to the authorization of this
Agreement and the consummation of the transactions contemplated herein, and a
certificate executed by the secretary or assistant secretary of Buyer as to the
due election, qualification and incumbency and valid signatures of its officers
authorized to sign this Agreement or any document or certificates to be
delivered under it.

Section 7.3 Absence of Certain Litigation. On the Closing Date, no suit, action
or other proceeding, or injunction or final judgment relating thereto, shall be
pending before any court or governmental or regulatory official or agency, in
which it is sought to restrain or prohibit or to obtain damages or other relief
from Seller in connection with this Agreement or the consummation of the
transactions contemplated hereby.

Section 7.4 Opinion of Buyer's General Counsel. Buyer's General Counsel shall
have delivered his opinion in the form of Exhibit 7.4 hereto.

Section 7.5 S. Western Lease. Buyer shall have assumed the S. Western Lease,
with the consent of the landlord thereunder.

Section 7.6 Real Property. Buyer shall have purchased the Real Property pursuant
to agreements with Illinois Land Trust, American National Bank as Land Trustee,
trust number 110045-04 dated December 29, 1989 and trust number 66431 dated
January 6, 1986.

Section 7.7 Employment Agreement. J. S. Mengel and Buyer shall have entered an
employment agreement annexed in the form of Exhibit 6.11.

Section 7.8 Further Documents. Buyer shall have executed and delivered to Seller
such documents, instruments, agreements, and certificates as may reasonably be
needed to carry out the transactions contemplated by this Agreement, including
such documents, instruments, agreements as Seller's counsel may reasonably
request in connection therewith.



                    (ARTICLE VIII COMMENCES ON THE NEXT PAGE)








<PAGE>










                                  ARTICLE VIII
                                   THE CLOSING

Section 8.1 Closing and Closing Provisions. The Closing shall be effected by
delivery of documents at the office of Gardner, Carton & Douglas, Quaker Tower,
321 N. Clark Street, Chicago, Illinois 60610-4795, and payment of the Purchase
Price and other payments required of Buyer on the Closing Date as provided
herein or in such other manner and at such place as the parties may agree. The
closing on the purchase by Buyer and sale by Seller of the Real Property shall
occur simultaneously.

Section 8.2 Deliveries by Seller. At or prior to the Closing, Seller shall
execute and deliver to Buyer all of the matters, certificates and other
documents designated as conditions precedent and deliveries precedent to Buyer's
obligation to close under this Agreement or to carry out the transactions
contemplated hereby.

Section 8.3 Deliveries by Buyer. At the Closing Buyer shall deliver to Seller
the Purchase Price, subject to adjustments as permitted by this Agreement, in
the manner and form provided for in this Agreement, and all the certificates and
other documents designated as conditions precedent and deliveries precedent to
Seller's obligation to close under this Agreement or carry out the transactions
contemplated hereby.








                       (ARTICLE IX COMMENCES ON NEXT PAGE)









<PAGE>



                                   ARTICLE IX
                              POST-CLOSING MATTERS

Section 9.1 Records of the Business. For a period of four years following the
Closing Date or for such longer period as the statute of limitations applicable
to claims for Taxes relating to the Business for any period through the Closing
Date shall be extended (through voluntary extension or otherwise), Buyer shall
retain and grant to Seller and its representatives, at Seller's request, access
(at no cost to Seller) to and the right to make copies(at Seller's expense) of
those records and documents relating to the conduct of the Business or the
results thereof as may be necessary in connection with Seller's affairs or the
Business. If Seller notifies Buyer that Seller requires retention of such
records beyond four years, Seller shall have the right to take such records or
pay Buyer's customary storage charges for such post-four-year period.

Seller shall, for at least two years after the Closing Date, retain copies of
all records of the Business retained by Seller, and shall grant access thereto
to Buyer upon reasonable request.

Section 9.2 Public Announcement. Except as provided in Section 5.2(b) and 5.4,
neither party shall issue any press release or make any public announcement
relating to the subject matter of this Agreement without the prior written
approval of the other party; provided, however, that after the Closing the
parties may (i) make appropriate announcements to customers of the Business, and
(ii) make a public announcement to the effect that the transaction has occurred
(without any financial information), each after consultation with, and approval
of, the other party; and provided further that either party may make any public
disclosure it believes in good faith is required by applicable law or any
listing or trading agreement concerning its publicly-traded securities.

Section 9.3 Accounting Matters. If Peter Alberts is hired as an employee of
Buyer, Buyer agrees to allow Mr. Alberts to assist Seller and the Stockholders
in the preparation and discharge of their respective tax, accounting and other
financial reporting forms and obligations, provided that such services will not
unreasonably interfere with Mr. Alberts' performance of his duties for Buyer.


                     (ARTICLE X COMMENCES ON THE NEXT PAGE)






<PAGE>



                                    ARTICLE X
                                   TERMINATION

Section 10.1 Termination of Agreement. The parties may terminate this Agreement
as provided below:

                      (i) Buyer and Seller may terminate this Agreement by
mutual written consent at any time prior to the Closing;

                      (ii) Buyer may terminate this Agreement by giving written
notice to Seller at any time prior to the Closing (A) in the event Seller has
breached any material representation, warranty, or covenant contained in this
Agreement in any material respect, Buyer has notified Seller in writing of the
breach, and the breach has continued without cure for a period of 20 days after
the notice of breach or (B) if the Closing shall not have occurred on or before
June 1, 1997, by reason of the failure of any condition precedent under Article
VI hereof (unless the failure results primarily from Buyer itself breaching any
representation, warranty, agreement or covenant contained in this Agreement);
and

                      (iii) Seller may terminate this Agreement by giving
written notice to Buyer at any time prior to the Closing (A) in the event Buyer
has breached any material representation, warranty, or covenant contained in
this Agreement in any material respect, Seller has notified Buyer in writing of
the breach, and the breach has continued without cure for a period of 20 days
after the notice of breach or (B) if the Closing shall not have occurred on or
before June 1, 1997, by reason of the failure of any condition precedent under
Article VII hereof (unless the failure results primarily from Seller itself
breaching any representation, warranty, agreement or covenant contained in this
Agreement).

For purposes of this Section 10.1, "Seller" shall be deemed to include the
Stockholders.

Section 10.2 Effect of Termination. If a party terminates this Agreement
pursuant to Section 10.1, all rights and obligations of the parties hereunder,
other than the confidentiality obligation set forth in Section 5.2, shall
terminate without any liability of any party to any other party (except for any
liability of any party then in breach).

Section 10.3 Risk of Loss. The risk of loss, damage or destruction with respect
to the Subject Assets shall be borne (i) solely by Seller prior to the Closing,
and (ii) solely by Buyer subsequent to the Closing.




                     (ARTICLE XI COMMENCES ON THE NEXT PAGE)









<PAGE>



                                   ARTICLE XI
                                 INDEMNIFICATION

Section 11.1 General Indemnification Obligation of Seller. From and after the
Closing, Seller and Stockholders shall jointly and severally reimburse,
indemnify and hold harmless Buyer and its successors and assigns (each an
"Indemnified Buyer Party") against and in respect of:

              (a) any and all damages (excluding consequential damages, lost
profits, lost business opportunities and incidental damages), losses,
deficiencies, liabilities, costs and expenses (including assessments, reasonable
legal fees and litigation costs, fines and judgments) incurred or suffered by
any Indemnified Buyer Party that result from, relate to or arise out of:

                      (i) any and all liabilities and obligations of Seller of
any nature whatsoever (including liabilities for Taxes) arising from or incurred
in the operation of the Business prior to the Closing Date (other than those
related to matters covered by clause (iii) hereof), except for those liabilities
and obligations of Seller which Buyer specifically assumes pursuant to this
Agreement;

                      (ii) any and all actions, suits, claims or legal,
administrative, arbitration, governmental or other proceedings or investigations
(other than those related to matters covered by clause (iii) hereof) against any
Indemnified Buyer Party relating to Seller or the Business to the extent (and
only to the extent) the reason therefor or subject thereof arose or occurred
prior to the Closing Date or which result from or arise out of any action or
inaction prior to the Closing Date of Seller or any director, officer, employee,
agent, representative or subcontractor of Seller, except for those which Buyer
specifically assumes pursuant to this Agreement;

                      (iii) any cost, claim, expense or liability which Buyer
may incur in excess of $2.00 per cubic foot in connection with lost, damaged or
destroyed records of customers with which Seller did not, as of the Closing
Date, have a contract which limited Seller's liability in the event of loss,
damage or destruction to such amount, provided that Seller shall not be required
to indemnify Buyer in respect of any loss, damage or destruction which (i)
relates to new cartons moved into the Premises after the Closing Date, or (ii)
occurs after the Closing Date; and

                      (iv) any material misrepresentation, breach of warranty or
nonfulfillment of any agreement or covenant on the part of Seller under this
Agreement, or any material misrepresentation in or omission from any
certificate, schedule, statement, document or instrument furnished to Buyer at
the Closing pursuant hereto.

              (b) Notwithstanding anything herein contained to the contrary,
Seller and Stockholders shall have no obligations to Buyer under Section
11.1(a)(iii) or (iv) with respect to any claim of which Buyer gives notice to
Seller later than the last day of the twelfth month after the Closing Date.

              (c) Notwithstanding any other provision herein contained, Seller
and Stockholders shall not have any indemnification obligation with respect to
the first $50,000 of total claims incurred under Section 11.1, provided that if
total claims exceed $50,000, Seller and Stockholders shall be liable for the
total amount of such claims in excess of the $50,000 threshold. The





<PAGE>



maximum liability of Seller and Stockholders under this Section 11.1 shall be
equal to the Purchase Price.

              (d) In case any event shall occur which would otherwise entitle
either party to assert a claim for indemnification hereunder, no loss shall be
deemed to have been sustained by such party to the extent of (i) any tax
benefits realized by such party with respect thereto (all parties being
obligated to take actions to receive such benefits), or (ii) any after-tax
proceeds received by such party from any third party, including but not limited
to any insurance carrier, and the parties agree to use their best efforts to
recover such losses, deficiencies, liabilities, costs and expenses from any
applicable insurance carrier so as to reduce the amount payable by the
indemnified party hereunder.

Section 11.2 General Indemnification Obligation of Buyer. From and after the
Closing, Buyer will reimburse, indemnify and hold harmless the Stockholders,
Seller and their successors or assigns (an "Indemnified Seller Party") against
and in respect of:

              (a) any and all damages (excluding consequential damages, lost
profits, lost business opportunities and incidental damages), losses,
deficiencies, liabilities, costs and expenses (including assessments, reasonable
legal fees and litigation costs, fines and judgments) incurred or suffered by
any Indemnified Seller Party that result from, relate to or arise out of:

                      (i) any and all liabilities and obligations of Seller
which have been specifically assumed by Buyer pursuant to this Agreement;

                      (ii) any and all liabilities and obligations arising from
or incurred in the operation of the Business after the Closing Date;

                      (iii) any and all actions, suits, claims or legal,
administrative, arbitration, governmental or other proceedings or investigations
against any Indemnified Seller Party to the extent relating to Buyer or the
Business to the extent (and only to the extent) the reason therefor or subject
thereof arose or occurred after the Closing Date or which result from or arise
out of any action or inaction after the Closing Date of Buyer or any director,
officer, employee, agent, representative or subcontractor of Buyer; and

                      (iv) any material misrepresentation, breach of warranty or
non-fulfillment of any agreement or covenant on the part of Buyer under this
Agreement, or any material misrepresentation in or omission from any
certificate, schedule, statement, document or instrument furnished to Seller
pursuant hereto or in connection with the negotiation, execution or performance
of the transactions contemplated by this Agreement.

              (b) Notwithstanding anything herein contained to the contrary,
Buyer shall have no obligations to Seller under Section 11.2(a)(iv) with respect
to any claim of which Seller give notice to Buyer later than the last day of the
twelfth month after the Closing Date.

              (c) In case any event shall occur which would otherwise entitle
either party to assert a claim for indemnification hereunder, no loss shall be
deemed to have been sustained by such party to the extent of (i) any tax
benefits realized by such party with respect thereto (all parties being
obligated to take reasonable actions to receive such benefits), or (ii) any
after-tax proceeds received








<PAGE>



by such party from any third party, including but not limited to any insurance
carrier, and the parties agree to use their best efforts to recover such losses,
deficiencies, liabilities, costs and expenses from any applicable insurance
carrier so as to reduce the amount payable by the indemnified party hereunder.

Section 11.3          Procedure for Indemnification.

              (a) No party thereto shall be liable for any claim for
indemnification under this Article XI unless written notice of a claim for
indemnification is delivered by the party seeking indemnification (the
"Indemnitee") to the party from whom identification is sought (the "Indemnitor")
prior to the expiration of the applicable survival period, if any, set forth in
Sections 11.1(b) and Section 11.2(b). All notices given pursuant to this section
shall set forth with reasonable specificity the basis of the claim for
indemnification. In case of any claim by a third party, any suit, any claim by
any governmental body, or any legal, administrative or arbitration proceeding
with respect to which the Stockholders, Seller or Buyer may have liability under
the indemnity agreements contained in this Article XI, the Indemnitor shall be
entitled to participate therein, and, to the extent desired, to assume the
defense thereof, and after notice of its election to assume the defense thereof,
the Indemnitor will not be liable to the Indemnitee for any legal or other
expenses subsequently incurred by the Indemnitee in connection with the defense
thereof, other than reasonable costs of investigation, unless the Indemnitor
does not actually assume the defense thereof following notice of such election.
The Indemnitee and the Indemnitor shall make available to each other and their
attorneys and representatives, at all reasonable times, all books and records
relating to such suit, claim or proceeding, and will render to each other such
assistance as may reasonably be required in order to insure proper and adequate
defense of any such suit, claim or proceeding. Neither the Indemnitee nor the
Indemnitor will make any settlement of any claim which might give rise to
liability of the other under the indemnity agreements contained in this Article
XI without the consent of the other, which shall not be unreasonably withheld.
If the Indemnitor elects to settle any such claim and the Indemnitee refuses to
consent to such compromise or settlement, then the liability of the Indemnitor
to the Indemnitee shall be limited to the amount offered by the Indemnitor in
compromise or settlement.

              (b) If an Indemnitor disputes its obligation to indemnify an
Indemnitee with respect to any claim or the amount thereof (whether or not
Indemnitor desires to defend the Indemnitee against such claim), such dispute
shall be resolved in accordance with Section 11.5 hereof. Pending the resolution
of any dispute by Indemnitor of its liability with respect to any claim or
demand, such claim or demand shall not be settled without the prior written
consent of both Indemnitor and Indemnitee, which consent shall not be
unreasonably withheld or delayed.

Section 11.4 Payment. Upon the determination of liability under Section 11.3 or
11.5 hereof, the appropriate party shall pay to the other, as the case may be,
within ten days after such determination, the amount of any claim for
indemnification made hereunder. Upon the payment in full of any claim, the
entity making payment shall be subrogated to the rights of the indemnified party
against any person, firm or corporation with respect to the subject matter of
such claim.

Section 11.5    Arbitration.






<PAGE>



                      (i) Except as otherwise set forth in Section 2.6, disputes
under this Article XI or otherwise arising under this Agreement shall be settled
by arbitration in Chicago, Illinois, before one arbitrator pursuant to the
commercial arbitration rules of the American Arbitration Association.
Arbitration may be commenced at any time by any party hereto giving written
notice to each other party to a dispute that such dispute has been referred to
arbitration under this Section 11.5. The arbitrator shall be selected by the
joint agreement of Seller and Buyer, but if they do not so agree within 20 days
after the date of the notice referred to above, the selection shall be made
pursuant to the rules of the American Arbitration Association from the panels of
arbitrators maintained by such Association. Any award rendered by the
arbitrators shall be conclusive and binding upon the parties hereto and not
subject to appeal. This provision for arbitration shall be specifically
enforceable by the parties and the decision of the arbitrators in accordance
herewith shall be final and binding and there shall be no right of appeal
therefrom. In any such action the arbitrators shall be specifically authorized
to award all or a portion of its attorneys' fees and costs to a prevailing party
or to cause such party to bear his or its own fees and costs.

                      (ii) To the extent that arbitration may not be legally
permitted by applicable law or statute, and the parties to any dispute hereunder
do not at the time of such dispute mutually agree to submit such dispute to
arbitration, any party may commence a civil action in a court of appropriate
jurisdiction to solve disputes hereunder. Nothing contained in this Section 11.5
shall prevent the parties from settling any dispute by mutual agreement at any
time.

Section 11.6 Compliance with Bulk Sales Law. Buyer and Seller hereby waive
compliance by Seller with the bulk sales law and any other similar laws in any
applicable jurisdiction in respect of the transactions contemplated by this
Agreement. Seller and Stockholders shall jointly and severally indemnify Buyer
from, and hold it harmless against, any liabilities, damages, costs and expenses
resulting from or arising out of (i) the parties' failure to comply with any of
such laws in respect of the transactions contemplated by this Agreement, or (ii)
any action brought or levy made as a result thereof, other than those
liabilities which have been expressly assumed, on such terms as expressly
assumed, by Buyer pursuant to this Agreement.

Section 11.7 Other Rights and Remedies. Except as otherwise specifically
provided, the indemnification rights of the parties under this Article XI are
such parties' sole rights and remedies under this Agreement and with respect to
disputes arising herefrom, and are in lieu of, and not in addition to, rights
and remedies a party may otherwise have at law or in equity, and no other remedy
shall be had in contract, tort or otherwise by Buyer, the Stockholders, Seller
or their respective officers, directors, employees, agents, affiliates,
successors and assigns, all such remedies being hereby expressly waived to the
fullest extent permitted by applicable law. In furtherance of the foregoing,
Buyer, the Stockholders and Seller hereby waive to the fullest extent permitted
by law, any rights, claims and causes of action they may have against one
another relating to the subject matter of this Agreement arising under or based
upon any law, ordinance, rule or regulation or otherwise.




                    (ARTICLE XII COMMENCES ON THE NEXT PAGE)









<PAGE>



                                   ARTICLE XII
                            MISCELLANEOUS PROVISIONS

Section 12.1 Commissions. Each party represents and warrants that it has dealt
with no broker or finder in connection with this Agreement and, insofar as it
knows, no broker or other person is entitled to any commission or finder's fee
in connection with the consummation of the transactions contemplated by this
Agreement.

Section 12.2 Expenses. Except as otherwise provided herein, each of the parties
shall pay all costs and expenses incurred or to be incurred by it in the
negotiation and preparation of this Agreement and in closing and carrying out
the transactions contemplated by this Agreement.

Section 12.3 Headings; Schedules. The subject headings of the sections and
subsections of this Agreement are included only for purposes of convenience, and
shall not affect the construction or interpretation of any of its provisions.
Any disclosure made by Seller in a Schedule hereto shall be deemed a disclosure
on all Schedules hereto.

Section 12.4 Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument. Signatures on this
Agreement delivered by fax or telecopier shall be considered original signatures
for purposes of effectiveness of this Agreement.

Section 12.5 Rights of Parties. Nothing in this Agreement, whether express or
implied, is intended to confer any rights or remedies under or by reason of this
Agreement on any persons other than the parties to it and their respective
successors and assigns, nor is anything in this Agreement intended to relieve or
discharge the obligation or liability of any third person to any party to this
Agreement, nor shall any provision give any third persons any right of
subrogation or action against any party to this Agreement.

Section 12.6 Assignment. Except as provided in the following paragraph, the
rights and obligations of the parties to this Agreement or any interest in this
Agreement shall not be assigned, transferred, hypothecated, pledged or otherwise
disposed of without the prior written consent of the nonassigning party which
consent may be withheld in such party's sole discretion.

Buyer shall have the right to assign to a wholly-owned subsidiary of Buyer its
rights and obligations under this Agreement; provided that such assignment shall
not release Buyer from its obligations hereunder, and Buyer shall remain fully
liable for all of Buyer's obligations hereunder, including without limitation
the payment of the Purchase Price.

Section 12.7 Survival of Representations and Warranties. All representations,
warranties, covenants and agreements shall survive the Closing until the end of
the twelfth month after the Closing Date, except for ongoing agreements to
indemnify the other party for post-Closing actions in accordance with Article
XI.

Section 12.8 Notices. All notices, requests, demands and other communications
under this Agreement shall be in writing and shall be deemed to have been duly
given on the date of service if delivered by telecopier (with notice of
receipt), or if served personally on the party to whom





<PAGE>



notice is to be given; or if delivered by overnight private carrier, on the date
of delivery; or on the third day after mailing if mailed to the party to whom
notice is to be given by first class mail, certified, postage prepaid, and
properly addressed as following:

To Seller or the Stockholders:
     Chicago Data Destruction Corporation
     2748 North Kenmore
     Chicago, Illinois  60614
     Attention:  John S. Mengel, President
     Telecopier: (773) 528-1401

With a copy (which shall not constitute notice but which is nonetheless required
for notice) to:
     Gardner, Carton & Douglas
     Quaker Tower
     321 N. Clark Street, Suite 3400
     Chicago, Illinois  60610-4795
     Attention:  Michael Barry, Esq.
     Telecopier:  (312) 644-3381

To Buyer:
     Iron Mountain Records Management, Inc.
     745 Atlantic Avenue, 10th Floor
     Boston, Massachusetts  02111-2735
     Attention:  John F. Kenny, Jr.
     Telecopier:  (617) 350-7881

With a copy (which shall not constitute notice but which is nonetheless required
for notice) to:
     Garry B. Watzke, Esq.
     745 Atlantic Avenue, 10th Floor
     Boston, Massachusetts  02111-2735
     Telecopier:  (617) 350-7881

Any party may change its address for purposes of this paragraph by giving the
other parties written notice of the new address in the manner set for above.

Section 12.9 Applicable Law and Remedies. The terms, conditions and other
provisions of this Agreement and any documents or instruments delivered in
connection with it shall be governed and construed according to the internal
laws of the State of Illinois (other than the choice of law rules thereof)
except as to matters of law concerning the internal corporate affairs of any
corporate entity which is a party to or the subject of this Agreement, and as to
those matters, the jurisdiction under which such entity derives its powers shall
govern. All remedies at law, in equity, by statute or otherwise shall be
cumulative and may be enforced concurrently or from time to time and, subject to
the express terms of this Agreement, the election of any remedy or remedies
shall not constitute a waiver of the right to pursue any other available
remedies. Except as otherwise set forth in Section 2.6 the parties agree that
all disputes arising under this Agreement shall be settled through arbitration
procedures as described in Section 11.5.









<PAGE>



Section 12.10 Additional Instruments and Assistance. Each party hereto shall
from time to time execute and deliver such further instruments, provide
additional information and render such further assistance as the other party or
its counsel may reasonably request in order to complete and perfect the
transactions contemplated herein.

Section 12.11 Severability. If any provision of this Agreement is held or deemed
to be invalid or unenforceable to any extent when applied to any person or
circumstance, such invalidity or unenforceability shall not affect the remaining
provisions of this Agreement; the remaining provisions hereof and the
enforcement of such provision with respect to other persons or circumstances, or
to another extent, shall not be affected thereby and each provision hereof shall
be enforced to the fullest extent allowed by law. Moreover, the invalid or
inoperative provision shall be reformed and construed so that it shall be valid
and enforceable to the maximum extent permitted.

Section 12.12 Pronouns and Terms. In this Agreement, the singular shall include
the plural, the plural the singular, and the use of any gender shall include all
genders.

Section 12.13 Taxes. The party which customarily bears the economic burden
thereof shall pay any Illinois sales taxes imposed on the transaction. Buyer
shall pay any other transfer and conveyance taxes and title, recording, transfer
and similar fees payable or assessable in connection with the sale and transfer
of the Subject Assets contemplated by this Agreement. Buyer and Seller shall
each pay its portion prorated as of the Effective Time of state and local ad
valorem taxes on the Business.

Seller's federal tax identification number is 36-3011681.

Buyer's federal tax identification number is 04-3038590.

Section 12.14 Entire Agreement, Amendments and Waivers. This Agreement, together
with all Exhibits and Schedules hereto, constitutes the entire agreement among
the parties pertaining to the subject matter hereof and supersedes all prior and
contemporaneous agreements, understandings, negotiations and discussions,
whether oral or written, of the parties (including the letter of intent dated
January 14, 1997, signed by Seller on January 15, 1997), and there are no
representations, warranties or other agreements among the parties in connection
with the subject matter hereof except as set forth specifically herein or
contemplated hereby. No supplement, modification or waiver of this Agreement
shall be binding unless executed in writing by the party to be bound thereby. No
waiver of any of the provisions of this Agreement shall be deemed or shall
constitute a waiver of any other provision hereof (whether or not similar), nor
shall such waiver constitute a continuing waiver unless otherwise expressly
provided.






<PAGE>



     IN WITNESS WHEREOF, the parties to this Agreement have duly executed it on
the date first above written.


SELLER:                                 BUYER:
CHICAGO DATA DESTRUCTION CORPORATION    IRON MOUNTAIN RECORDS MANAGEMENT, INC.




By: /s/ John S. Mengel                  By  /s/ John F. Kenny, Jr.
    ------------------------------          ----------------------
        John S. Mengel                  Name: John F. Kenny, Jr.
        President                       Title:  Vice President



STOCKHOLDERS:




 /s/ John Mengel
    ------------------------------
     John Mengel




 /s/ John S. Mengel
    ------------------------------
     John S. Mengel




                                                                      Exhibit 21

                       LIST OF SUBSIDIARIES OF REGISTRANT

Subsidiary of Registrant

1.       Iron Mountain Records Management, Inc.
         (in California, also does business as Metro Records Management)
         State of incorporation -- Delaware

Subsidiaries of Iron Mountain Records Management, Inc.

1.     Metro Business Archives, Inc. (doing business at Metro Business Archives)
       State of incorporation -- New York

2.     Criterion Atlantic Property, Inc.
       State of incorporation -- Delaware

3.     Criterion Property, Inc.
       State of incorporation -- Delaware

4.     Critical Files Security, Inc.
       State of incorporation -- Florida

5.     Hollywood Property, Inc.
       State of incorporation -- California

6.     IM San Diego, Inc.
       State of incorporation -- Delaware

7.     Iron Mountain Consulting Services, Inc.
       State of incorporation -- Delaware

8.     Iron Mountain Data Protection Services, Inc.
       State of incorporation -- Massachusetts

9.     Iron Mountain Records Management of Maryland, Inc.
       State of incorporation -- Delaware

10.    Iron Mountain Records Management of Ohio, Inc.
       State of incorporation -- Delaware

11.    Iron Mountain Wilmington, Inc.
       State of incorporation -- Delaware

12.    Iron Mountain Records Management of Missouri LLC
       State of organization -- Delaware

13.    Iron Mountain Records Management of Boston, Inc.
       State of incorporation -- Massachusetts

14.    Data Archive Services, Inc.
       State of incorporation -- Delaware

15.    Iron Mountain Records Management of Minnesota, Inc.
       State of incorporation -- Delaware


<PAGE>


16.    Iron Mountain Records Management of Michigan, Inc.
       State of incorporation -- Delaware




                                                                    Exhibit 23.2

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the use of our reports
covering the audited historical financial statements and schedule of Iron
Mountain Incorporated and to all references to our Firm included in or made a
part of this registration statement. 


                                              /s/ ARTHUR ANDERSEN LLP

Boston, Massachusetts
April 2, 1997




                                                                    Exhibit 23.3

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the use of our reports
covering the audited historical financial statements and schedule of Safesite
Records Management Corporation, and the audited historical financial statements
of Mohawk Business Record Storage, Inc., and to all references to our Firm
included in or made a part of this registration statement. 


                                              /s/ ARTHUR ANDERSEN LLP

Boston, Massachusetts
Minneapolis, Minnesota
March 31, 1997 




                                                                    Exhibit 23.4

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the use of our report
and to all references to our Firm included in or made a part of this
registration statement. 


                                              /s/ GEO. S. OLIVE & CO. LLC

Indianapolis, Indiana
March 31, 1997 




                                                                    Exhibit 23.5

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the use of our report
dated April 19, 1996 for International Record Storage and Retrieval, Inc. and to
all references to our Firm included in or made a part of this registration
statement. 


                                             /s/ ROTHSTEIN, KASS & COMPANY, P.C.
Roseland, New Jersey
March 31, 1997



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