INVESTCORP S A
SC 13D/A, 1997-06-11
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                               SCHEDULE 13D/A

                     Under the Securities Exchange Act of 1934
                              (Amendment No. 1 )*

                              PRIME SERVICE, INC.
- -------------------------------------------------------------------------------
                               (Name of Issuer)

                                 Common Stock
- -------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                   74157E1
- -------------------------------------------------------------------------------
                               (CUSIP Number)

                 E. Michael Greaney, Gibson, Dunn & Crutcher,
                  200 Park Avenue, New York, N.Y. 10166-0193
- -------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized
                    to Receive Notices and Communications)

                                June 8, 1997
- -------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)




If the filing person has previously filed a statement on Schedule 13G to 
report the acquisition which is the subject of this Schedule 13D, and is 
filing this schedule because of Rule 13d-1(b)(3) or (4), check the following 
box / /.

Check the following box if a fee is being paid with the statement / /. (A fee 
is not required only if the reporting person: (1) has a previous statement on 
file reporting beneficial ownership of more than five percent of the class of 
securities described in Item 1; and (2) has filed no amendment subsequent 
thereto reporting beneficial ownership of five percent or less of such 
class.)  (See Rule 13d-7.)

Note:  Six copies of this statement, including all exhibits, should be filed 
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are 
to be sent.

*The remainder of this cover page shall be filled out for a reporting 
person's initial filing on this form with respect to the subject class of 
securities, and for any subsequent amendment containing information which 
would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be 
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange 
Act of 1934 ("Act") or otherwise subject to the liabilities of that section 
of the Act but shall be subject to all other provisions of the Act (however, 
see the Notes).

<PAGE>

                                  Schedule 13D
CUSIP No. 74157E1                                       Page  2   of  7  Pages

- -------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 

     INVESTCORP S.A.
- -------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*       (a)  / /
      Not Applicable                                          (b)  / /

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

3     SEC USE ONLY

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

4     SOURCE OF FUNDS*
      WC
- -------------------------------------------------------------------------------

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEMS 2(d) OR 2(e) 

     Not Applicable
- -------------------------------------------------------------------------------

6     CITIZENSHIP OR PLACE OF ORGANIZATION

     Luxembourg
- -------------------------------------------------------------------------------

                      7     SOLE VOTING POWER
NUMBER OF                   0
SHARES               ----------------------------------------------------------
BENEFICIALLY          8     SHARED VOTING POWER      
OWNED BY                    8,049,432                
EACH                 ----------------------------------------------------------
REPORTING             9     SOLE DISPOSITIVE POWER   
PERSON                      0                        
WITH                 ----------------------------------------------------------
                     10     SHARED DISPOSITIVE POWER 
                            8,049,432

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

11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      8,049,432

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

12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
          SHARES*                                                         / /
      Not Applicable

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

13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

       28.75%
- -------------------------------------------------------------------------------

14          TYPE OF REPORTING PERSON* 
            CO

- -------------------------------------------------------------------------------
                    *SEE INSTRUCTIONS BEFORE FILLING OUT!
         INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
     (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.

*  Filed jointly pursuant to Rule 13d-1(f)(1) of the Securities Exchange Act 
   of 1934, as amended.


<PAGE>
                                Schedule 13D

    CUSIP No. 74157E1                            Page   3   of   7   Pages
- -------------------------------------------------------------------------------

1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 

      SIPCO Limited 
- -------------------------------------------------------------------------------

2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*     (a)  / /
      Not Applicable                                        (b)  / /

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

3     SEC USE ONLY

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

4     SOURCE OF FUNDS*
      WC

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

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEMS 2(d) OR 2(e) 

      Not Applicable
- -------------------------------------------------------------------------------

6     CITIZENSHIP OR PLACE OF ORGANIZATION
      Cayman Island

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

                      7     SOLE VOTING POWER
NUMBER OF                   0
SHARES               ----------------------------------------------------------
BENEFICIALLY          8     SHARED VOTING POWER      
OWNED BY                    8,049,432                
EACH                 ----------------------------------------------------------
REPORTING             9     SOLE DISPOSITIVE POWER   
PERSON                      0                        
WITH                 ----------------------------------------------------------
                     10     SHARED DISPOSITIVE POWER 
                            8,049,432

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

11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       8,049,432
- -------------------------------------------------------------------------------

12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
          SHARES* 

       Not Applicable

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

13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

       28.75%

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

14     TYPE OF REPORTING PERSON*

       CO
- -------------------------------------------------------------------------------
                  *SEE INSTRUCTIONS BEFORE FILLING OUT!
        INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
    (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.

*  Filed jointly pursuant to Rule 13d-1(f)(1) of the Securities Exchange Act of
   1934, as amended.

<PAGE>

  CUSIP NO. 74157E1                SCHEDULE 13D        Page   4   of   7   
                                                             ---      ---


    This Amendment No. 1 to Schedule 13D relates to the Common Stock, par 
value $0.01 per share (the "Common Stock"), of Prime Service, Inc., a 
Delaware corporation ("Prime").

    This Amendment No. 1 to Schedule 13D is being filed pursuant to Rule 
13d-2(a) of Regulation 13D-G of the General Rules and Regulations under the 
Securities Exchange Act of 1934, as amended, on behalf of Investcorp S.A., a 
Luxembourg corporation, ("Investcorp"), and Sipco Limited, a Cayman Islands 
corporation ("Sipco" and collectively, the "Reporting Persons") to amend the 
Reporting Persons' Schedule 13D as indicated herein to report, among other 
things, that the entities that are record owners of the shares over which the 
Reporting Persons have beneficial ownership and certain other shareholders of 
Prime Common Stock have agreed to tender all of the shares of Prime Common
Stock owned by them to a subsidiary of Atlas Copco North America, Inc. ("Atlas
Copco") at a price of at least $32.00 per share and have granted Atlas Copco a
proxy with respect to such shares.

    The Reporting Persons previously filed a Schedule 13D respecting their 
indirect beneficial ownership of approximately 28.75% of the Common Stock of 
Prime Services Inc. Except as otherwise indicated herein, all defined terms 
used herein shall have the meaning ascribed to them in such Schedule 13D.

ITEM 1. SECURITY AND ISSUER.

    No material change.

ITEM 2. IDENTITY AND BACKGROUND.

    No material change.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

    No material change.

ITEM 4. PURPOSE OF TRANSACTION.

    Two indirect wholly-owned subsidiaries of Investcorp which in the 
aggregate own 1,089,658 shares of Prime Common Stock (the "Investcorp 
Subsidiaries"), certain other entities (the "Managed Entities") that in the 
aggregate own 6,960,274 shares of Prime Common Stock as to which Investcorp 
may be deemed to share beneficial ownership, and certain other shareholders 
of Prime Common Stock (collectively with the Investcorp Subsidiaries and the 
Managed Entities, the "International Investors") each have entered into a 
Stockholder Agreement with Atlas Copco North America, Inc. ("Atlas Copco") 
dated as of June 8, 1997 (the "Stockholder Agreement") (filed herewith) in 
connection with the execution by Atlas Copco, PS Acquisition Corp. ("Newco") 
and Prime of an Agreement and Plan of Merger dated June 8, 1997 (the "Merger 
Agreement"). In connection with the Stockholder Agreement, Investcorp has 
executed the Investcorp Bank E.C. Guaranty (the "Investcorp Guaranty") (filed 
herewith as part of the Stockholder Agreement), guaranteeing the performance 
of the International Investors of their respective obligations and agreements 
under the Stockholder Agreement. The Investcorp Guaranty terminates 
immediately following the merger.


<PAGE>
  CUSIP NO. 74157E1                SCHEDULE 13D        Page   5   of   7
                                                             ---      ---

    Pursuant to the Stockholder Agreement, each of the International 
Investors has agreed to vote in favor of the merger provided for under the 
Merger Agreement and has granted and appointed Atlas Copco as irrevocable 
proxy and attorney-in-fact to vote the International Investor's respective 
shares in favor of such merger. Pursuant to the Stockholder Agreement, each 
of the International Investors also has agreed to tender and sell to Newco 
all of its respective shares of Prime Common Stock pursuant to and in 
accordance with the terms of the Offer to Purchase to be made by Newco 
pursuant to the Merger Agreement. Pursuant to the Merger Agreement and 
subject to the terms and conditions set forth therein, Newco will merge into 
Prime, with Prime continuing as the surviving corporation (the "Surviving 
Corporation"). At the time of the merger all shares of Prime Common Stock 
will be canceled and retired and the common stock of Newco will be converted 
into common stock of the Surviving Corporation, resulting in Atlas Copco 
holding all outstanding shares of common stock of the Surviving Corporation.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

    (a) No material change. 

    (b) (i) See Cover Page Items 7 and 8. Investcorp does not have the
sole power to vote or to dispose of any shares of the Common Stock. Investcorp 
shares the power to direct the voting and to direct the disposition of over
1,089,658 shares of the Common Stock held by the Investcorp Subsidiaries. In
addition, Investcorp may be deemed to  share the power to direct the voting and
to direct the dispositon of an additional 6,960,274 shares of the Common Stock
owned by the Managed Entities, because such entities or their shareholders or
principals have entered into revocable management services or similar
agreements with an affiliate of Investcorp pursuant to which each such entity
or person indirectly has granted such affiliate the authority to direct the
voting and disposition of the Common Stock owned by such entity for so long as
such agreement is in effect. Pursuant to the Stockholder Agreement, the power
to vote or to direct the vote and the power to direct the disposition of the
shares of Prime Common Stock owned by the Investcorp Subsidiaries and the
Managed Entities is shared with respect to certain matters and subject to
certain terms and conditions with Atlas Copco and/or Newco.

    (ii) SIPCO does not directly own any Common Stock. The shares listed as 
beneficially owned by SIPCO consist of the shares Investcorp may be deemed to 
beneficially own. SIPCO, which is a passive holding company entity without 
operations or employees, may be deemed to control Investcorp through its 
ownership of a majority of the stock of a company which indirectly owns a 
majority of Investcorp's outstanding stock. Pursuant to the Stockholder 
Agreement, the power to vote or to direct the vote and the power to direct 
the disposition of the shares owned by the Investcorp Subsidiaries and the 
Managed Entities is shared with respect to certain matters and subject to 
certain terms and conditions with Atlas Copco and/or Newco.

    (c) No material change.

    (d) The response to Item 6 is incorporated herein by reference.

    (e) Not applicable.

<PAGE>

  CUSIP NO. 74157E1                SCHEDULE 13D        Page   6   of   7   
                                                             ---      ---
ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
        TO SECURITIES OF THE ISSUER.

    The response to Item 4 is incorporated herein by reference.

    Pursuant to the Stockholder Agreement each International Investor also 
agreed that (i) if the Merger Agreement is terminated because Prime's Board 
of Directors exercises its fiduciary duties and if the International Investor 
receives consideration of more than $32.00 a share from a third party in 
connection with or following any public announcement of a Third Party 
Business Combination (as defined in the Stockholder Agreement), the 
International Investor shall pay to Atlas Copco 100% of (A) the excess of (1) 
such consideration up to and including $36.00, over (2) $32.00, multiplied by 
(B) the number of shares with respect to which such consideration was 
received; (ii) if the International Investor receives consideration of more 
than $32.00 a share from Atlas Copco in connection with or following any 
public announcement of a Third Party Business Combination (as defined in the 
Stockholder Agreement), the International Investor shall pay to Atlas Copco 
an amount equal to (A) 100% of the excess of (1) the consideration up to and 
including $34.00, over (2) $32.00 and (B) 50% of the excess of (1) the 
consideration up to and including $36.00 over (2) $34.00, in each case 
multiplied by the number of shares with respect to which such consideration 
was received; and (iii) if Atlas Copco pays the International Investor more 
than $32 a share and sells the stock or assets of Prime within 180 days, 
Atlas Copco shall pay to the International Investor the excess of the sales 
proceeds in connection with such sale over the aggregate price paid for the 
shares by Atlas Copco. Under management service and other agreements with
certain of the International Investors' shareholders, Investcorp has a
contingent right to a fee based upon the investment return realized on the
portfolio of securities managed by Investcorp's subsidiaries.

    In the Stockholder Agreement, each International Investor also agreed, 
among other things, not to solicit, initiate, enter into or participate in 
any inquiries, proposals, offers or negotiations from any person other than 
Atlas Copco and its affiliates relating to any Transaction Proposal (as 
defined in the Merger Agreement) and not to offer for sale, sell, transfer, 
tender, pledge, encumber, assign or otherwise dispose of any shares of Prime 
Common Stock owned by it.

ITEM 7. MATERIALS TO BE FILED AS EXHIBITS.

    1. Stockholder Agreement dated as of June 8, 1997 between Atlas Copco and 
the International Investors (includes the Investcorp Bank E.C. Guaranty)

    2. Agreement and Plan of Merger dated as of June 8, 1997 among Atlas 
Copco, PS Acquisition Corp. and Prime (incorporated herein by reference 
to Exhibit 99.1 to the Schedule 14D-9 filed June 9, 1997 by Prime.)

ITEM 8. CERTIFICATION AND SIGNATURE:

    After reasonable inquiry and to the best of my knowledge and belief, the 
undersigned certifies that the information set forth in this statement is 
true, complete and correct.


<PAGE>

  CUSIP NO. 74157E1                SCHEDULE 13D        Page   7   of   7  
                                                             ---      ---

    INVESTCORP S.A.

    By: /s/ Gary S. Long                      June 9, 1997
       Title: Authorized Representative


    SIPCO LIMITED
 
    By: /s/ Gary S. Long                      June 9, 1997
       Title: Authorized Representative


<PAGE>

                                   Exhibits
                                   --------

99.1                        Stockholder Agreement dated as of June 8, 1997 
                            between Atlas Copco and the International 
                            Investors.


<PAGE>
                                                            Exhibit 99.1

                                STOCKHOLDER AGREEMENT

         STOCKHOLDER AGREEMENT (this "Agreement"), dated as of June 8, 1997, 
by and between ATLAS COPCO NORTH AMERICA INC., a Delaware corporation 
("Parent"), CHASE NOMINEES (GUERNSEY) LIMITED, a Guernsey (Channel Islands) 
corporation, and ARLINGTON LIMITED, BALLET LIMITED, DENARY LIMITED, EQUIPMENT 
RENTAL LIMITED, EQUITY PEA LIMITED, EQUITY PEB LIMITED, EQUITY PEC LIMITED, 
EQUITY PED LIMITED, FLEET EQUITY LIMITED, FREEPORT LIMITED, GLEAM LIMITED, 
HIGHLANDS LIMITED, INVESTCORP INVESTMENT EQUITY LIMITED, LAPORTE LIMITED, 
NOBLE LIMITED, OUTRIGGER LIMITED, PLANO LIMITED, QUILL LIMITED, RADIAL 
LIMITED, SHORELINE LIMITED, RENTAL HOLDINGS LIMITED, RENTAL EQUITY LIMITED, 
PRIME HOLDINGS LIMITED, PRIME EQUITY LIMITED, PE INVESTMENTS LIMITED, PE 
HOLDING LIMITED, NEW PRIME INVESTMENTS LIMITED, NEW PRIME EQUITY LIMITED, 
EQUIPMENT INVESTMENTS LIMITED, EQUIPMENT HOLDINGS LIMITED, EQUIPMENT EQUITY 
LIMITED, and ZINNIA LIMITED (each a Cayman Islands corporation and together 
with Chase Nominees (Guernsey) Limited each referred to as an "International 
Investor," and, collectively, the "International Investors").

                                 W I T N E S S E T H:

         WHEREAS, concurrently herewith, Parent, PS Acquisition Corp., a 
Delaware corporation and a wholly owned subsidiary of Parent ("Newco"), and 
Prime Service, Inc., a Delaware corporation (the "Company"), will enter into 
an Agreement and Plan of Merger of even date herewith (as such agreement may 
be amended from time to time, the "Merger Agreement"; capitalized terms used 
but not defined herein shall have the meanings set forth in the Merger 
Agreement), pursuant to which (and subject to the terms and conditions 
specified therein) Newco will be merged with and into the Company, with the 
Company continuing as the surviving corporation and as a wholly owned 
subsidiary of Parent (the "Merger"), whereby each share of common stock, par 
value $0.01 per share, of the Company ("Company Common Stock") issued and 
outstanding immediately prior to the Effective Time of the Merger will be 
converted into the right to receive the Merger Consideration, other than (i) 
shares of Company Common Stock owned, directly or indirectly, by the Company 
or any subsidiary of the Company or by Parent, Newco or any other Affiliate 
of Parent and (ii) Dissenting Shares; and

         WHEREAS, as a condition to Parent and Newco entering into the Merger 
Agreement, Parent requires that each International Investor enter into, and 
each International Investor has agreed to enter into, this Agreement with 
Parent;

<PAGE>


         NOW, THEREFORE, in consideration of the representations and 
warranties and covenants set forth herein and in the Merger Agreement, Parent 
and the International Investors, each intending to be legally bound, hereby 
agree as follows:

    1.   Representations and Warranties of the International Investors.  Each 
International Investor hereby represents and warrants to Parent as follows:

         1.1  Organization; Authorization; Validity of Agreement.  Such 
International Investor is a corporation duly organized and validly existing 
under the laws of its jurisdiction of incorporation and has the corporate 
power and authority to enter into this Agreement and to carry out its 
obligations hereunder.  The execution and delivery of this Agreement by such 
International Investor and the consummation by such International Investor of 
the transactions contemplated hereby have been duly authorized by all 
necessary corporate action on the part of such International Investor and no 
other corporate proceedings on the part of such International Investor are 
necessary to authorize this Agreement or any of the transactions contemplated 
hereby.  This Agreement has been duly executed and delivered by such 
International Investor and constitutes a valid and binding obligation of such 
International Investor enforceable against such International Investor in 
accordance with its terms, except that (a) such enforcement may be subject to 
applicable bankruptcy, insolvency or other similar laws, now or hereafter in 
effect, affecting creditors' rights generally, and (b) the remedy of specific 
performance and injunctive and other forms of equitable relief may be subject 
to equitable defenses and to the discretion of the court before which any 
proceeding therefor may be brought.

         1.2  Consents and Approvals; No Violations.  The execution, delivery 
and performance of this Agreement by such International Investor shall not 
(a) conflict with or result in any breach of the certificate of 
incorporation, by-laws or other corporate organizational documents of such 
International Investor, (b) result in a violation or breach of, or constitute 
(with or without notice or lapse of time or both) a default (or give rise to 
any third party right of termination, cancellation, material modification or 
acceleration) under any of the terms, conditions or provisions of any note, 
bond, mortgage, indenture, license, contract, commitment, arrangement, 
understanding, agreement or other instrument or obligation of any kind to 
which such International Investor is a party or by which such International 
Investor or any of its properties or assets is bound or affected or (c) 
violate any order, writ, injunction, decree, judgment, statute, rule or 
regulation applicable to such International Investor or any of its properties 
or assets.  No consent, approval, order or authorization of, or registration, 
declaration or filing with, or notice to, any state, federal or foreign 
public body or authority is required by or with respect to such International 
Investor in connection with the execution and delivery of this Agreement by 
such International Investor or the consummation by such International 
Investor of any of the transactions contemplated by this Agreement.

         1.3  Ownership of International Shares.  (a) Such International 
Investor is the record and/or beneficial owner of that number of shares of 
Company Common Stock set forth opposite such International Investor's name on 
Annex 1 attached hereto (such shares hereinafter referred to as the "Existing 
Shares," and together with any shares of Company Common Stock acquired of 
record or beneficially by such International Investor in any

                                         -2-

<PAGE>


capacity after the date hereof and prior to the termination hereof, whether 
upon exercise of options, conversion of convertible securities, purchase, 
exchange or otherwise, referred to as  the "International Shares").

              (b)  On the date hereof, the Existing Shares constitute all of 
    the outstanding shares of Company Common Stock owned of record and/or 
    beneficially by such International Investors.

              (c)  Such International Investor has sole power of disposition 
    with respect to all of the Existing Shares owned by it and sole voting 
    power with respect to the matters set forth in Section 3.1 hereof and 
    sole power to demand dissenter's or appraisal rights, in each case with 
    respect to all of the Existing Shares owned by it with no restrictions on 
    such rights, subject to applicable federal securities laws and the terms 
    of this Agreement.

              (d)  Such International Investor will have sole power of 
    disposition with respect to shares of Company Common Stock other than 
    Existing Shares, if any, which become beneficially owned by such 
    International Investor and will have sole voting power with respect to 
    the matters set forth in Section 3.1 hereof and sole power to demand 
    dissenter's or appraisal rights, in each case with respect to all such 
    shares, if any, which become beneficially owned by such International 
    Investor with no restrictions on such rights, subject to applicable 
    federal securities laws and the terms of this Agreement.

         1.4  No Encumbrances.  The Existing Shares and the certificates 
representing such shares are now, and the International Shares and the 
certificates representing such shares at all times during the term hereof 
will be, held by such International Investor, free and clear of all claims, 
liens, charges, security interests, proxies, voting trusts or agreements, 
understandings or arrangements and any other encumbrances of any kind or 
nature whatsoever, except as otherwise provided in this Agreement.

         1.5  Brokers and Intermediaries.  No broker, investment banker, 
financial adviser or other person is entitled to any broker's, finder's, 
financial advisor's or other similar fee or commission in connection with the 
transactions contemplated hereby based upon arrangements made by or on behalf 
of such International Investor.

         1.6  Reliance.  Such International Investor understands and 
acknowledges that Parent and Newco are entering into the Merger Agreement in 
reliance upon such International Investor's execution and delivery of this 
Agreement with Parent.

    2.   Representations and Warranties of Parent.  Parent hereby represents 
and warrants to the International Investors as follows:

         2.1  Organization; Authorization; Validity of Agreement.  Parent is 
a corporation duly organized, validly existing and in good standing under the 
laws of Delaware and has the corporate power and authority to enter into this 
Agreement and to carry out its obligations hereunder.  The execution and 
delivery of this Agreement by Parent and the

                                         -3-


<PAGE>


consummation by Parent of the transactions contemplated hereby have been duly 
authorized by all necessary corporate action on the part of Parent and no 
other corporate proceedings on the part of Parent are necessary to authorize 
this Agreement or any of the transactions contemplated hereby.  This 
Agreement has been duly executed and delivered by Parent and constitutes a 
valid and binding obligation of Parent enforceable against Parent in 
accordance with its terms, except that (a) such enforcement may be subject to 
applicable bankruptcy, insolvency or other similar laws, now or hereafter in 
effect, affecting creditors' rights generally, and (b) the remedy of specific 
performance and injunctive and other forms of equitable relief may be subject 
to equitable defenses and to the discretion of the court before which any 
proceeding therefor may be brought.

         2.2  Consents and Approvals; No Violations.  The execution, delivery 
and performance of this Agreement by Parent shall not (a) conflict with or 
result in any breach of the certificate of incorporation or by-laws of 
Parent, (b) result in a violation or breach of, or constitute (with or 
without notice or lapse of time or both) a default (or give rise to any third 
party right of termination, cancellation, material modification or 
acceleration) under any of the terms, conditions or provisions of any note, 
bond, mortgage, indenture, license, contract, commitment, arrangement, 
understanding, agreement or other instrument or obligation of any kind to 
which Parent is a party or by which Parent or any of its properties or assets 
is bound or affected or (c) violate any order, writ, injunction, decree, 
judgment, statute, rule or regulation applicable to Parent or any of Parent's 
properties or assets.  Except as provided in the Merger Agreement, no 
consent, approval, order or authorization of, or registration, declaration or 
filing with, or notice to, any state, federal or foreign public body or 
authority is required by or with respect to Parent in connection with the 
execution and delivery of this Agreement by Parent or the consummation by 
Parent of any of the transactions contemplated by this Agreement.

    3.   Agreement to Vote; Proxy.

         3.1  Voting.  Each International Investor hereby agrees that, until 
the Termination Date (as defined in Section 9), at any meeting of the 
stockholders of the Company, however called, or in connection with any 
written consent of the stockholders of the Company, such International 
Investor shall vote (or cause to be voted) the International Shares held of 
record or beneficially by such party (a) in favor of the Merger, the 
execution and delivery by the Company of the Merger Agreement and the 
approval of the terms thereof and each of the other actions contemplated by 
the Merger Agreement and this Agreement and any actions required in 
furtherance hereof and thereof; (b) against any action or agreement that 
would result in a breach of any covenant, representation or warranty or any 
other obligation or agreement of the Company under the Merger Agreement or 
this Agreement; and (c) except as specifically requested in writing by Parent 
in advance, against the following actions (other than the Merger and the 
transactions contemplated by the Merger Agreement):  (i) any extraordinary 
corporate transaction, such as a merger, consolidation or other business 
combination involving the Company; (ii) a sale, lease or transfer of a 
material amount of assets of the Company or reorganization, recapitalization, 
dissolution or liquidation of the Company; (iii)(A) any change in the 
majority of the board of directors of the Company; (B) any material change in 
the present capitalization of the Company or any amendment of the Company's 
Certificate of Incorporation or By-Laws; (C) any other material change in the 

                                         -4-


<PAGE>


Company's corporate structure or business; or (D) any other action which is 
intended, or could reasonably be expected, to impede, interfere with, delay, 
postpone, discourage or adversely affect the Offer, the Merger or the 
transactions contemplated by the Merger Agreement or this Agreement or the 
contemplated economic benefits of any of the foregoing.  No International 
Investor shall enter into any agreement or understanding with any person or 
entity prior to the Termination Date to vote or give instructions after the 
Termination Date in any manner inconsistent with clauses (i), (ii) or (iii) 
of the preceding sentence.

         3.2  PROXY.  EACH INTERNATIONAL INVESTOR WHICH IS A RECORD OR 
BENEFICIAL OWNER OF ANY OF THE INTERNATIONAL SHARES, HEREBY GRANTS TO, AND 
APPOINTS, PARENT AND MARK COHEN, EXECUTIVE VICE PRESIDENT OF PARENT, AND 
SIXTEN NORDMARK, GENERAL COUNSEL OF PARENT, IN THEIR RESPECTIVE CAPACITIES AS 
OFFICERS OF PARENT, AND ANY INDIVIDUAL WHO SHALL HEREAFTER SUCCEED TO ANY 
SUCH OFFICE OF PARENT, AND ANY OTHER DESIGNEE OF PARENT, EACH OF THEM 
INDIVIDUALLY, SUCH INTERNATIONAL INVESTOR'S IRREVOCABLE (UNTIL THE 
TERMINATION DATE) PROXY AND ATTORNEY-IN-FACT (WITH FULL POWER OF 
SUBSTITUTION) TO VOTE THE INTERNATIONAL SHARES AS INDICATED IN SECTION 3.1 
ABOVE.  EACH INTERNATIONAL INVESTOR INTENDS THIS PROXY TO BE IRREVOCABLE 
(UNTIL THE TERMINATION DATE) AND COUPLED WITH AN INTEREST AND WILL TAKE SUCH 
FURTHER ACTION AND EXECUTE SUCH OTHER INSTRUMENTS AS MAY BE NECESSARY TO 
EFFECTUATE THE INTENT OF THIS PROXY AND HEREBY REVOKES ANY PROXY PREVIOUSLY 
GRANTED BY SUCH INTERNATIONAL INVESTOR WITH RESPECT TO THE INTERNATIONAL 
SHARES.

    4.   Certain Covenants of the International Investors.  Except in 
accordance with the terms of this Agreement, Each International Investor 
hereby agrees as follows:

         4.1  Tender of International Shares.  Each International Investor 
agrees to tender and sell to Newco all of the International Shares pursuant 
to and in accordance with the terms of the Offer.  Each International 
Investor agrees that such party shall deliver to the depositary for the 
Offer, no later than the fifth Business Day (as defined below) following the 
commencement of the Offer pursuant to Section 1.01 of the Merger Agreement, a 
letter of transmittal together with any and all certificates representing the 
International Shares owned by it.  Notwithstanding any term of the Offer to 
the contrary, each International Investor agrees not to withdraw any 
International Shares tendered into the Offer pursuant to this Section 4.1 
during the term of this Agreement. Each International Investor hereby 
acknowledges and agrees that Newco's obligation to accept for payment and pay 
for the International Shares in the Offer is subject to the terms and 
conditions of the Offer.  Each International Investor hereby permits Parent 
and Newco to publish and disclose in the Offer Documents (including, without 
limitation, all documents and schedules filed with the SEC), the identity of 
the International Investors and the nature of their commitments, arrangements 
and understandings under this Agreement. Notwithstanding anything in this 
Section 4.1 to the contrary, the foregoing shall not restrict any director, 
officer or employee of an International Investor who is also a director of 
the Company from taking actions in such person's capacity as a director of 
the Company to the extent and in the circumstances 

                                         -5-


<PAGE>


permitted by Section 6.07 of the Merger Agreement.  For purposes of this 
Agreement, "Business Day" shall mean a day on which banks are not required or 
authorized to be closed in the City of New York.

         4.2  No Solicitation.  Prior to the Termination Date, no 
International Investor shall (directly or indirectly through advisors, agents 
or other intermediaries, nor shall such International Investor authorize or 
permit any of their officers, directors, agents, representatives or advisors 
to (a) solicit, initiate or take any action knowingly to facilitate the 
submission of inquiries, proposals or offers from any Person (other than 
Parent or any of its affiliates) relating to any Transaction Proposal or (b) 
enter into or participate in any discussions or negotiations regarding any of 
the foregoing, or furnish to any other Person any information with respect to 
the business, properties or assets or any of the foregoing, or otherwise 
cooperate in any way with, or knowingly assist or participate in, facilitate 
or encourage, any effort or attempt by any other Person (other than Parent or 
any of its affiliates) to do or seek any of the foregoing; provided, however, 
that the foregoing shall not restrict any director, officer or employee of an 
International Investor who is also a director of the Company from taking 
actions in such person's capacity as a director of the Company to the extent 
and in the circumstances permitted by Section 6.07 of the Merger Agreement.  
If an International Investor receives any such inquiry or proposal, then such 
International Investor shall promptly inform Parent of the terms and 
conditions, if any, of such inquiry or proposal and the identity of the 
person making it.  Each International Investor will immediately cease and 
cause its advisors, agents and other intermediaries to cease any and all 
existing activities, discussions or negotiations with any parties conducted 
heretofore with respect to any of the foregoing, and shall use its reasonable 
best efforts to cause any such parties in possession of confidential 
information about the Company that was furnished by or on behalf of the 
Company to return or destroy all such information in the possession of any 
such party or in the possession of any agent or advisor of such party.

         4.3  Restriction on Transfer, Proxies and Non-Interference; 
Restriction on Withdrawal.  Prior to the Termination Date, no International 
Investor shall directly or indirectly: (a) except pursuant to the terms of 
the Offer and the Merger Agreement, and to Parent pursuant to this Agreement, 
offer for sale, sell, transfer, tender, pledge, encumber, assign or otherwise 
dispose of, enforce or permit the execution of the provisions of any 
redemption agreement with the Company or enter into any contract, option or 
other arrangement or understanding with respect to or consent to the offer 
for sale, sale, transfer, tender, pledge, encumbrance, or other disposition 
of, or exercise any discretionary powers to distribute, any or all of the 
International Shares owned by it or any interest therein; (b) except as 
contemplated hereby, grant any proxies or powers of attorney with respect to 
any International Shares, deposit any International Shares into a voting 
trust or enter into a voting agreement with respect to any International 
Shares; or (c) take any action that would make any representation or warranty 
of any International Investor contained herein untrue or incorrect or have 
the effect of preventing or disabling any International Investor from 
performing its obligations under this Agreement.

         4.4  Waiver of Appraisal and Dissenter's Rights.  Each International 
Investor hereby waives any rights of appraisal or rights to dissent from the 
Merger that such International Investor may have.

                                         -6-


<PAGE>



    5.   Third Party Business Combination; Remedy.

         (a)(i)  If the Merger Agreement is terminated in accordance with 
Section 8.01(e) or Section 8.01(f) of the Merger Agreement, and, upon or 
following any such termination, any International Investor receives from any 
Person (other than Parent, Newco or any of their affiliates) any cash or 
non-cash consideration in an amount greater than $32.00 per share (the "Third 
Party Consideration") in respect of all or any portion of the International 
Shares in connection with or following any public announcement of a Third 
Party Business Combination (as defined below) during the period commencing on 
the date hereof and ending twelve months from the date the Merger Agreement 
is terminated (provided that the contract or agreement relating to such Third 
Party Business Combination was entered into within six months after the 
Merger Agreement is terminated), then such International Investor shall 
within two (2) Business Days of receipt thereof pay to Parent or its designee 
an aggregate amount equal to one hundred percent (100%) of (A) the excess of 
(1) the Third Party Consideration up to and including $36.00 over (2) $32.00 
multiplied by (B) the number of International Shares with respect to which 
such Third Party Consideration was received, or

         (ii)  if any International Investor receives from Parent, Newco or 
any of their affiliates any cash or non-cash consideration pursuant to the 
Offer or otherwise in an amount greater than $32.00 per share (the "Alternate 
Consideration") in respect of all or any portion of the International Shares 
owned by it following any public announcement of a Third Party Business 
Combination (as defined below) during the period commencing on the date 
hereof and ending twelve months from the date of such public announcement, 
then such International Investor shall within two (2) Business Days of 
receipt thereof pay to Parent or its designee an aggregate amount equal to 
(A) one hundred percent (100%) of the excess of (1) the Alternate 
Consideration up to and including $34.00 over (2) $32.00; and (B) fifty 
percent (50%) of the excess, if any, of (1) the Alternate Consideration up to 
and including $36.00 over (2) $34.00; in each case multiplied by the number 
of International Shares with respect to which such Alternative Consideration 
was received; 

provided that, in each case, (x) if the consideration received by an 
International Investor shall be securities listed on a national securities 
exchange or traded on the NASDAQ National Market ("NASDAQ"), the per share 
value of such consideration shall be equal to the closing price per share 
listed on such national securities exchange or NASDAQ on the date such 
transaction is consummated and (y) if the consideration received by an 
International Investor shall be in a form other than such listed securities, 
the per share value shall be determined in good faith as of the date such 
transaction is consummated by Parent or its designee and such International 
Investor, or, if Parent or its designee and such International Investor 
cannot reach agreement, by a nationally-recognized investment banking firm 
reasonably acceptable to the parties.  The term "Third Party Business 
Combination" with respect to the Company means the occurrence of any of the 
following events:  (i) the Company or any subsidiary of the Company whose 
assets constitute twenty percent (20%) or more of the Company's consolidated 
assets is acquired by merger or otherwise by any person or group, other than 
Parent or any affiliate thereof (a "Third Party"); (ii) the Company or any 
subsidiary of the Company enters into an agreement with a Third Party which 
contemplates the acquisition of twenty percent (20%) or more of the total 
assets of the Company and its subsidiaries, taken 

                                         -7-


<PAGE>

as a whole; (iii) the Company, or any International Investor enters into a 
merger or other agreement with a Third Party which contemplates the 
acquisition of more than twenty percent (20%) of the outstanding shares of 
Company Common Stock; or (iv) a Third Party acquires more than twenty percent 
(20%) of the outstanding Company Common Stock.

         (b)  If, within one hundred eighty (180) days after the acquisition 
by Parent, Newco or any of their affiliates (the "Acquiring Company") of the 
International Shares for an amount greater than $32.00 per share (as 
contemplated by Section 5(a)(ii)), the Acquiring Company sells all or 
substantially all of the outstanding shares of capital stock or assets of the 
Company, then the Acquiring Company shall within two (2) Business Days of 
receipt thereof pay to each International Investor or its designees an amount 
equal to the excess of the sales proceeds received by the Acquiring Company 
in connection with such sale attributable to the percentage ownership 
interest in the Company represented by the International Shares purchased by 
the Acquiring Company from such International Investor over the aggregate 
price paid by the Acquiring Company to such International Investor for such 
International Shares.

    6.   Further Assurances.  From time to time, at any other party's request 
and without further consideration, each party hereto shall execute and 
deliver such additional documents and take all such further action as may be 
necessary or desirable to consummate and make effective, in the most 
expeditious manner practicable, the transactions contemplated by this 
Agreement.

    7.   Certain Events.  Each International Investor agrees that this 
Agreement and the obligations hereunder shall attach to all International 
Shares and shall be binding upon any person or entity to which legal or 
beneficial ownership of such International Shares shall pass, whether by 
operation of law or otherwise. 

    8.   Stop Transfer.  Each International Investor agrees with, and 
covenants to Parent that it shall not request that the Company register the 
transfer (book-entry or otherwise) of any certificate or uncertificated 
interest representing any of the International Shares. 

    9.   Termination.  The obligations of each International Investor under 
Sections 3, 4.1, 4.2 , 4.3 and 8.1 shall terminate upon the first to occur of 
(a) the Effective Time of the Merger and (b) the date the Merger Agreement is 
terminated in accordance with its terms (such earlier date being the 
"Termination Date").  Except as set forth in this Section 9, all other 
agreements and obligations of the parties hereto shall survive the Effective 
Time of the Merger and/or the Termination Date, as applicable, and in the 
case of Section 5 hereof, to the extent set forth in such section.

    10.  Miscellaneous.

         10.1  Entire Agreement; Assignment.  This Agreement (a) constitutes 
the entire agreement between the parties with respect to the subject matter 
hereof and supersedes all other prior agreements and understandings, both 
written and oral, between the parties with respect to the subject matter 
hereof and (b) shall not be assigned by operation of law or

                                         -8-


<PAGE>


otherwise without the prior written consent of the other parties, provided 
that Parent may assign, in its sole discretion, its rights and obligations 
hereunder to any affiliate of Parent, but no such assignment shall relieve 
Parent of its obligations hereunder if such assignee does not perform such 
obligations.

         10.2  Amendments.  This Agreement may not be modified, amended, 
altered or supplemented, except upon the execution and delivery of a written 
agreement executed by the parties hereto. 

         10.3 Notices.  All notices, requests, claims, demands and other 
communications hereunder shall be in writing and shall be given (and shall be 
deemed to have been duly received if so given) by hand delivery, telegram, 
telex or telecopy, or by mail (registered or certified mail, postage prepaid, 
return receipt requested) or by any courier service, such as Federal Express, 
providing proof of delivery.  All communications hereunder shall be delivered 
to the respective parties at the following addresses:

         (a)  if to Parent,to

              Atlas Copco North America Inc.
              1211 Hamburg Turnpike
              Suite 214
              Wayne, New Jersey  07470
              Telephone: (973) 633-8600
              Telecopy:  (973) 633-9722

              Attention: Mr. Mark Cohen

              with a copy to

              Winthrop, Stimson, Putnam & Roberts
              One Battery Park Plaza
              New York, New York  10004-1490
              Telephone: (212) 858-1000
              Telecopy:  (212) 858-1500

              Attention: Stephen R. Rusmisel, Esq.

         (b)  if to the International Investors or any of them, to
          
              c/o Investcorp Management Services Limited
              P.O. Box 5430
              Investcorp House
              Manama, Bahrain

              Telephone: 011 973 532 000
              Telecopy:  011 973 530 816


                                         -9-


<PAGE>


              Attention: H. Richard Lukens, III

              with a copy to:

              Gibson, Dunn & Crutcher LLP
              200 Park Avenue
              New York, New York  10166-0193
              Telephone: (212) 351-4000
              Telecopy:  (212) 351-4035

              Attention: E. Michael Greaney, Esq.

or to such other address as the person to whom notice is given may have 
previously furnished to the others in writing in the manner set forth above.

         10.4 Governing Law. This Agreement shall be governed by and 
construed in accordance with the laws of the State of Delaware, regardless of 
the laws that might otherwise govern under applicable principles of conflicts 
of laws thereof.

         10.5 Enforcement.  The parties agree that irreparable damage would 
occur in the event that any of the provisions of this Agreement were not 
performed in accordance with their specific terms or were otherwise breached. 
It is accordingly agreed that the parties shall be entitled to an injunction 
or injunctions to prevent breaches of this Agreement and to enforce 
specifically the terms and provisions of this Agreement.

         10.6 Counterparts.  This Agreement may be executed in two or more 
counterparts, each of which shall be deemed to be an original, but all of 
which shall constitute one and the same Agreement.

         10.7 Descriptive Headings.  The descriptive headings used herein are 
inserted for convenience of reference only and are not intended to be part of 
or to affect the meaning or interpretation of this Agreement.

         10.8 Severability.  Whenever possible, each provision or portion of 
any provision of this Agreement will be interpreted in such manner as to be 
effective and valid under applicable law but if any provision or portion of 
any provision of this Agreement is held to be invalid, illegal or 
unenforceable in any respect under any applicable law or rule in any 
jurisdiction, such invalidity, illegality or unenforceability will not affect 
any other provision or portion of any provision in such jurisdiction, and 
this Agreement will be reformed, construed and enforced in such jurisdiction 
as if such invalid, illegal or unenforceable provision or portion of any 
provision had never been contained herein.

         10.9 Definitions.  For purposes of this Agreement:

         (a)  "beneficially own" or "beneficial ownership" with respect to 
any securities shall mean having "beneficial ownership" of such securities 
(as determined pursuant to Rule 13d-3 under the Exchange Act), including 
pursuant to any agreement, 

                                         -10-


<PAGE>


arrangement or understanding, whether or not in writing.  Without duplicative 
counting of the same securities by the same holder, securities beneficially 
owned by a Person shall include securities Beneficially Owned by all other 
Persons with whom such Person would constitute a "group" as described in 
Section 13(d)(3) of the Exchange Act.

         (b)  "Person" shall mean an individual, corporation, limited 
liability company, partnership, joint venture, association, trust, 
unincorporated organization or other entity.

         (c)  In the event of a stock dividend or distribution, or any change 
in the Company Common Stock by reason of any stock dividend, split-up, 
recapitalization, combination, exchange of shares or the like, the term 
"International Shares" shall be deemed to refer to and include the 
International Shares as well as all such stock dividends and distributions 
and any shares into which or for which any or all of the International Shares 
may be changed or exchanged.

         10.10  Stockholder Capacity.  Notwithstanding anything herein to the 
contrary, no person who is a director, officer or employee of an 
International Investor who is, or becomes during the term hereof, a director 
of the Company makes any agreement or understanding herein in his or her 
capacity as such director, and the agreements set forth herein shall in no 
way restrict any director in the exercise of his or her fiduciary duties as a 
director of the Company.  Each International Investor has executed this 
Agreement solely in its capacity as the record and/or beneficial holder of 
International Shares.

            [THE REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                         -11-


<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to 
be duly executed as of the day and year first above written.

ARLINGTON LIMITED                    BALLET LIMITED

By: /s/                              By: /s/ H. Richard Lukens III
    --------------------------------     ---------------------------------
    Name:  Martonmere Services Ltd.      Name: H. Richard Lukens III
    Title: Director                      Title: Authorized Signatory
             
                                                                     
CHASE NOMINEES (GUERNSEY)            DENARY LIMITED                  
 LIMITED                                                             
                                                                     
                                                                     
By: /s/ A. Williams                  By: /s/ H. Richard Lukens III
    --------------------------------     ---------------------------------
    Name: A. Williams                    Name: H. Richard Lukens III
    Title: Secretary                     Title: Authorized Signatory
                                                                     
EQUIPMENT RENTAL LIMITED             EQUITY PEA LIMITED              
                                                                     
                                                                     
                                                                     
By: /s/ Sydney J. Coleman            By: /s/ Sydney J. Coleman
    --------------------------------     ---------------------------------
    Name: Sydney J. Coleman              Name: Sydney J. Coleman
    Title: The Director Ltd. Director    Title: The Director Ltd. Director
                                                                     
EQUITY PEB LIMITED                   EQUITY PEC LIMITED              
                                                                     
                                                                     
                                                                     
By: /s/ Sydney J. Coleman            By: /s/ Sydney J. Coleman
    --------------------------------     ---------------------------------
    Name: Sydney J. Coleman              Name: Sydney J. Coleman
    Title: The Director Ltd. Director    Title: The Director Ltd. Director
                                                                     
EQUITY PED LIMITED                   FREEPORT LIMITED                
                                                                     
                                                                     
                                                                     
By: /s/ Sydney J. Coleman            By: /s/
    --------------------------------     ---------------------------------
    Name: Sydney J. Coleman              Name: Martonmere Services Ltd.
    Title: The Director Ltd. Director    Title: Director



                                         -12-


<PAGE>

GLEAM LIMITED                        HIGHLANDS LIMITED



By: /s/ H. Richard Lukens III        By: /s/ H. Richard Lukens III
    ------------------------------       -------------------------------
    Name: H. Richard Lukens III          Name: H. Richard Lukens III
    Title: Authorized Signatory          Title: Authorized Signatory
                                                                     
INVESTCORP INVESTMENT EQUITY         LAPORTE LIMITED                 
 LIMITED                                                             
                                                                     
                                                                     
By: /s/ Sydney J. Coleman            By: /s/
    ------------------------------       --------------------------------
    Name: Sydney J. Coleman              Name: Martonmere Services Ltd.
    Title: The Director Ltd. Director    Title: Director
                                                                     
NOBLE LIMITED                        OUTRIGGER LIMITED               
                                                                     
                                                                     
                                                                     
By: /s/ H. Richard Lukens III        By: /s/ H. Richard Lukens III
    ------------------------------       --------------------------------
    Name: H. Richard Lukens III          Name: H. Richard Lukens III
    Title: Authorized Signatory          Title: Authorized Signatory
                                                                     
PLANO LIMITED                        QUILL LIMITED                   
                                                                     
                                                                     
                                                                     
By:                                  By: /s/ H. Richard Lukens III
    ------------------------------       --------------------------------
    Name: Martonmere Services Ltd.       Name: H. Richard Lukens III
    Title: Director                      Title: Authorized Signatory
                                                                     
RADIAL LIMITED                       SHORELINE LIMITED               
                                                                     
                                                                     
                                                                     
By: /s/ H. Richard Lukens III        By: /s/ H. Richard Lukens III
    ------------------------------       ---------------------------------
    Name: H. Richard Lukens III          Name: H. Richard Lukens III
    Title: Authorized Signatory          Title: Authorized Signatory


                                    -13-


<PAGE>



RENTAL EQUITY LIMITED                PRIME HOLDINGS LIMITED          
                                                                     
                                                                     
                                                                     
By: /s/ Ray Iler                     By: /s/ Rory Mohammed
    -----------------------------        -------------------------------
    Name: Ray Iler                       Name: Rory Mohammed
    Title: Director                      Title: Alternate Director
                                                                     
PRIME EQUITY LIMITED                 PE INVESTMENTS LIMITED          
                                                                     
                                                                     
                                                                     
                                                                     
By: /s/ Sydney J. Coleman            By: /s/ Christopher J. Bowring
    -----------------------------        -------------------------------
    Name: Sydney J. Coleman              Name: Christopher J. Bowring
    Title: The Director Ltd. Director    Title: Director
                                                                     
PE HOLDING LIMITED                   NEW PRIME INVESTMENTS LIMITED   
                                                                     
                                                                     
                                                                     
                                                                     
By: /s/ Michael Pilling              By: /s/ Simon James
    -----------------------------        -------------------------------
    Name: Michael Pilling                Name: Simon James
    Title: Director                      Title: Director
                                                                     
NEW PRIME EQUITY LIMITED             EQUIPMENT INVESTMENTS LIMITED   
                                                                     
                                                                     
                                                                     
By: /s/ Jessie Bush                  By: /s/ Dale Babiuk
    -----------------------------        -------------------------------
    Name: Jessie Bush                    Name: Dale Babiuk
    Title: Director                      Title: Director
                                                                     
EQUIPMENT HOLDINGS LIMITED           EQUIPMENT EQUITY LIMITED        
                                                                     
                                                                     
                                                                     
By: /s/ Mark Rutkowski               By: /s/ Glen Wigney
    -----------------------------        -------------------------------
    Name: Mark Rutkowski                 Name: Glen Wigney
    Title: Director                      Title: Director


                                         -14-


<PAGE>

ZINNIA LIMITED                      RENTAL HOLDINGS LIMITED          
                                                                      
                                                                      
                                                                      
By: /s/ H. Richard Lukens III       By: /s/ Bruce Stirling 
    ---------------------------         --------------------------
    Name: H. Richard Lukens III          Name: Bruce Stirling         
    Title: Authorized Signatory          Title: Director
                                                                      
FLEET EQUITY LIMITED                 ATLAS COPCO NORTH AMERICA INC.   
                                                                      
                                                                      
                                                                      
By: /s/ Richard E. Douglas          By: /s/ Mark Cohen
    ---------------------------         --------------------------
    Name: Richard E. Douglas             Name: Mark Cohen             
    Title: Director                      Title: Exec. V.P.             






                                         -15-





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