VALLEN CORP
8-K, 1999-11-16
MEDICAL, DENTAL & HOSPITAL EQUIPMENT & SUPPLIES
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<PAGE>

                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549


                                    FORM 8-K


                                 CURRENT REPORT
                        Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

                Date of Report (Date of earliest event reported)
                     November 16, 1999 (November 14, 1999)


                               VALLEN CORPORATION
                          (Exact name of registrant as
                           specified in its charter)


Texas                              0-10796                      74-1366847
(State or other                  (Commission                  (IRS Employer
jurisdiction of                  File Number)                 Identification
incorporation)                                                   Number)


                            13333 Northwest Freeway
                             Houston, Texas  77040
                    (Address of principal executive offices)


       Registrant's telephone number, including area code (713) 462-8700

                                       1
<PAGE>

ITEM 1 - CHANGES IN CONTROL OF REGISTRANT AND ITEM 5 - OTHER EVENTS

     On November 14, 1999, Vallen Corporation (the "Registrant") entered into an
Agreement and Plan of Merger with Hagemeyer P.P.S. North America, Inc.
("Hagemeyer"), Shield Acquisition Corp. ("Sub") and the Registrant (the "Merger
Agreement").  In the Merger Agreement:  (i) Hagemeyer and Sub have agreed that
Sub will commence within five business days after the date of the Merger
Agreement a cash tender offer (the "Offer") for all issued and outstanding
shares of common stock, $.50 par value per share, of the Registrant (the "Common
Stock") at a price of $25.00 per share, net to the seller in cash; and (ii) the
parties have agreed that, following consummation of the Offer, (x) Sub will be
merged with and into the Registrant (the "Merger"), with the Registrant
surviving as a wholly owned subsidiary of Hagemeyer, and (y) each issued and
outstanding share of Common Stock will be converted into the right to receive
$25.00 per share in cash (or such higher price as may be paid in the Offer).
The Offer is subject to, among other things, the condition that there shall have
been tendered and not withdrawn prior to the expiration date of the Offer a
number of shares of Common Stock which, together with any shares of Common Stock
beneficially owned by Hagemeyer and its affiliates, constitutes at least two-
thirds of the then-outstanding shares of Common Stock (determined on a fully
diluted basis) (the "Minimum Condition").  The Offer and Merger are subject to,
among other things, regulatory approval, and the Merger is subject to approval
by the Registrant's shareholders.  Approval of the Merger by the Registrant's
shareholders will be assured if the Minimum Condition is satisfied.

     Hagemeyer N.V., the Netherlands-based parent company of Hagemeyer, has
unconditionally guaranteed all obligations of its subsidiaries in the
transaction.

     Leonard J. Bruce, Chairman of the Board of the Registrant, and certain
family members, in the form of two family partnerships, have entered into a
Shareholders' Agreement with Hagemeyer and Sub to tender the approximately 56%
of the Registrant's outstanding shares held by the family and to vote such
shares to support the merger.

ITEM 7.  EXHIBITS

     Exhibit 2.1       Agreement and Plan of Merger dated November 14, 1999
     Exhibit 2.2       Guarantee dated November 14, 1999
     Exhibit 2.3       Option Agreement dated November 14, 1999
     Exhibit 99.1      Shareholders' Agreement dated November 14, 1999
     Exhibit 99.2      Joint News Release dated November 15, 1999

                                       2
<PAGE>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                    VALLEN CORPORATION



Dated:  November 16, 1999       By:  /s/ James W. Thompson
                                    --------------------------------------
                                    Name:  James W. Thompson
                                    Title: President and Chief Executive
                                             Officer

                                       3

<PAGE>

                          AGREEMENT AND PLAN OF MERGER

                                     AMONG

                      HAGEMEYER P.P.S. NORTH AMERICA, INC.

                            SHIELD ACQUISITION CORP.

                                      AND

                               VALLEN CORPORATION
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                         Page
                                                                         ----
<S>                                                                      <C>
ARTICLE I. THE OFFER...................................................    2
 Section 1.1.    The Offer.............................................    2
 Section 1.2.    Offer Documents.......................................    3
 Section 1.3.    Company Actions.......................................    3
 Section 1.4.    Designation of Company Directors after Completion
                  of Offer.............................................    5
ARTICLE II. THE MERGER.................................................    5
 Section 2.1.    The Merger............................................    5
 Section 2.2.    Conversion of Capital Stock...........................    6
 Section 2.3.    Exchange of Certificates..............................    7
 Section 2.4.    Stock Options.........................................    9
 Section 2.5.    Time and Place of Closing.............................   10
ARTICLE III. CORPORATE ORGANIZATION AND GOVERNANCE OF THE
 SURVIVING CORPORATION.................................................   10
 Section 3.1.    Articles of Incorporation.............................   10
 Section 3.2.    Bylaws................................................   10
 Section 3.3.    Directors and Officers................................   10
ARTICLE IV. REPRESENTATIONS AND WARRANTIES OF THE COMPANY..............   10
 Section 4.1.    Corporate Existence and Power.........................   10
 Section 4.2.    Corporate Authorization...............................   11
 Section 4.3.    Subsidiaries..........................................   11
 Section 4.4.    Governmental Authorization............................   12
 Section 4.5.    Non-Contravention.....................................   12
 Section 4.6.    Capitalization........................................   13
 Section 4.7.    SEC Reports and Financial Statements..................   14
 Section 4.8.    Absence of Certain Changes or Events..................   14
 Section 4.9.    Disclosure Documents..................................   15
 Section 4.10.   Litigation............................................   16
 Section 4.11.   Contracts.............................................   16
 Section 4.12.   Real Property; Material Assets........................   16
 Section 4.13.   Taxes.................................................   17
 Section 4.14.   Employee Benefit Plans; ERISA.........................   18
 Section 4.15.   Labor Matters.........................................   20
 Section 4.16.   Compliance with Laws..................................   21
 Section 4.17.   Environmental Matters.................................   21
 Section 4.18.   Insurance.............................................   22
 Section 4.19.   Intellectual Property.................................   23
 Section 4.20.   Finders' Fees.........................................   24
 Section 4.21.   Opinion of Financial Advisor..........................   24
 Section 4.22.   Licenses; Approvals...................................   24
 Section 4.23.   Year 2000 Compliance..................................   24
 Section 4.24.   TBCA Article 13.......................................   24
</TABLE>

                                       i
<PAGE>

<TABLE>
<S>                                                                      <C>
ARTICLE V. REPRESENTATIONS AND WARRANTIES OF PARENT....................   25
 Section 5.1.    Corporate Existence and Power.........................   25
 Section 5.2.    Corporate Authorization...............................   26
 Section 5.3.    Governmental Authorization............................   26
 Section 5.4.    Non-Contravention.....................................   27
 Section 5.5.    Organization of Purchaser.............................   27
 Section 5.6.    Disclosure Documents..................................   27
 Section 5.7.    Litigation............................................   27
 Section 5.8.    Finders' Fees.........................................   28
 Section 5.9.    Financial Capability..................................   28
ARTICLE VI. COVENANTS OF THE COMPANY...................................   28
 Section 6.1.    Conduct of Business of the Company Pending the
                   Effective Time......................................   28
 Section 6.2.    Access to Financial and Operational Information.......   30
ARTICLE VII. COVENANTS OF PARENT.......................................   31
 Section 7.1.    Conduct of Business of Parent Pending the
                   Effective Time......................................   31
ARTICLE VIII. COVENANTS OF PARENT AND THE COMPANY......................   31
 Section 8.1.    Agreement to Cooperate; Further Assurances............   31
 Section 8.2.    No Solicitation.......................................   31
 Section 8.3.    Shareholder Approval..................................   33
 Section 8.4.    Company Shareholders' Meeting.........................   34
 Section 8.5.    Confidential Information..............................   34
 Section 8.6.    Communications........................................   35
 Section 8.7.    Obligations of Purchaser..............................   35
 Section 8.8.    Expenses..............................................   35
 Section 8.9.    Indemnification and Insurance.........................   35
 Section 8.10.   Retention and Severance Arrangements..................   35
ARTICLE IX. CONDITIONS OF THE MERGER...................................   36
 Section 9.1.    Conditions to Obligations of Each Party...............   36
ARTICLE X. TERMINATION OF AGREEMENT....................................   36
 Section 10.1.   Termination...........................................   36
 Section 10.2.   Certain Actions Prior to Termination..................   38
 Section 10.3.   Effect of Termination.................................   38
 Section 10.4.   Termination Fee.......................................   38
ARTICLE XI. MISCELLANEOUS..............................................   39
 Section 11.1.   Further Assurances....................................   39
 Section 11.2.   Survival..............................................   39
 Section 11.3.   Notices...............................................   39
 Section 11.4.   Governing Laws and Consent to Jurisdiction............   41
 Section 11.5.   Binding Upon Successors and Assigns; Assignment.......   41
 Section 11.6.   Severability..........................................   41
 Section 11.7.   Entire Agreement; Third Party Beneficiaries...........   41
 Section 11.8.   Other Remedies........................................   41
 Section 11.9.   Amendment and Waivers.................................   41
</TABLE>

                                      ii
<PAGE>

<TABLE>
<S>               <C>                                                     <C>
 Section 11.10.   Disclosure Schedules................................    42
 Section 11.11.   No Waiver...........................................    42
 Section 11.12.   Construction of Agreement...........................    42
 Section 11.13.   Counterparts........................................    42

ANNEX A
- -------

Conditions of the Offer

SCHEDULES
- ---------

Company Disclosure Schedule
Parent Disclosure Schedule
</TABLE>

                                      iii
<PAGE>

                              CERTAIN DEFINITIONS
                              -------------------

<TABLE>
<CAPTION>
DEFINED TERM                              SECTION
- ------------                              -------
<S>                                       <C>
Acquisition Proposal                      8.2(a)
Agreement                                 Introduction
Articles of Merger                        2.1(b)
Certificates                              2.3(b)
Claim                                     8.9
Code                                      2.3(g)
Company                                   Introduction
Company Acquisition                       10.4(b)
Company Board                             1.3
Company Common Stock                      Recital C
Company Disclosure Schedule               Article IV
Company ERISA Affiliate                   4.14(b)
Company Financial Advisors                1.3
Company Options                           2.4
Company Preferred Stock                   4.6
Company SEC Reports                       4.7
Company Securities                        4.6
Company Shareholders' Meeting             8.3(a)
Company Subsidiaries                      4.3
Company Systems                           4.23(b)
Company Year 2000 Compliant               4.23(b)
Company Year 2000 Plan                    4.23(a)
Confidentiality Agreement                 6.2
Corporations                              Introduction
Contamination                             4.17(a)
Copyrights                                4.19(a)
Dissenting Shares                         2.2(d)
Dissenting Shareholder                    2.2(d)
Effective Date                            2.1(b)
Effective Time                            2.1(b)
Environmental Law                         4.17(a)
ERISA                                     4.14(b)
Exchange Act                              1.1(a)
Exchange Fund                             2.3(a)
Expense Evidence                          10.4(a)
Expenses                                  10.4(a)
Fee                                       10.4(a)
Governmental Entity                       4.4
HSR Act                                   4.4(b)
Hazardous Substance                       4.17(a)
Indemnified Parties                       8.9
IRS                                       4.13(b)
Intellectual Property Assets              4.19(a)
Lien                                      4.5(d)
</TABLE>

                                      iv
<PAGE>

<TABLE>
<S>                                       <C>
Marks                                     4.19(a)
Material Adverse Effect                   4.1
Merger                                    Recital C
Merger Consideration                      2.2(c)
Multiemployer Plan                        4.14(e)
Notice                                    8.2(a)
Purchaser                                 Introduction
Offer                                     Recital C
Offer Consideration                       1.1(a)
Offer Documents                           1.2
Parent                                    Introduction
Parent Disclosure Schedule                Article V
Patents                                   4.19(a)
Paying Agent                              2.3(a)
Pension Plans                             4.14(b)
Policies                                  4.18
Proxy Statement                           4.9
RCRA                                      4.17(b)
SEC                                       1.1(b)
Schedule 14D-1                            1.2
Schedule 14D-9                            1.3
Securities Act                            4.4(d)
Superior Proposal                         8.2(a)
Surviving Corporation                     2.1(a)
Taxes                                     4.13(a)
TBCA                                      Recital C
Termination Date                          10.1(b)
Termination Notice                        10.1(d)
Welfare Plans                             4.14(b)
</TABLE>

                                       v
<PAGE>

                          AGREEMENT AND PLAN OF MERGER

     THIS AGREEMENT AND PLAN OF MERGER, dated as of November 14, 1999 (this
"Agreement"), is by and among HAGEMEYER P.P.S. NORTH AMERICA, INC., a Delaware
corporation ("Parent"), SHIELD ACQUISITION CORP., a Texas corporation and a
wholly owned subsidiary of Parent ("Purchaser"), and VALLEN CORPORATION, a Texas
corporation (the "Company") (Purchaser and the Company being hereinafter
sometimes collectively referred to as the "Constituent Corporations").

                                    RECITALS

     A.  The Boards of Directors of Parent, Purchaser and the Company each have
determined that the Offer and the Merger is advisable and fair to, and in the
best interests of, their respective shareholders, and have approved the business
combination described in this Agreement, including the transactions and plan of
merger provided for herein in which Purchaser would merge with and into the
Company, and the Company would become a wholly owned subsidiary of Parent.

     B.  The Board of Directors of each of the Company and Purchaser has adopted
a resolution recommending that the plan of merger be approved by the
shareholders of that corporation.

     C.  Leonard J. Bruce, Bruce Partners, Ltd., a Texas limited partnership,
and Bruce Interests Partnership, a Texas general partnership (collectively, the
"Major Shareholders"), are, together, the beneficial owners of approximately 56%
of the issued and outstanding shares of common stock, $.50 par value per share
("Company Common Stock"), of the Company and simultaneously with the execution
and delivery of this Agreement, and as a condition and inducement to Parent's
willingness to enter into this Agreement, have entered into a Shareholders'
Agreement (the "Shareholders' Agreement") providing for certain matters with
respect to his shares of Company Common Stock, the tender of such shares and
certain other actions relating to the Offer and the Merger and the other
transactions contemplated by this Agreement.

     D.  In furtherance of such combination it is proposed that (i) Purchaser
conduct a cash tender offer pursuant to the terms and conditions of this
Agreement for all of the outstanding shares of Company Common Stock (such cash
tender offer, as described in more detail in Article I below, the "Offer"), and
(ii) that upon consummation of the Offer, Purchaser merge with and into the
Company pursuant to the applicable provisions of the Texas Business Corporation
Act, as amended (the "TBCA"), and the terms and conditions of this Agreement
(such merger, as described in more detail in Article II below, the "Merger").

     E.  Simultaneously with the execution and delivery of this Agreement, and
as a condition and inducement to Parent's willingness to enter into this
Agreement, the Company has entered into an Option Agreement (the "Option
Agreement") with Parent and Purchaser pursuant to which the Company has granted
to Purchaser an option to purchase shares of Company Common Stock on the terms
and subject to the conditions set forth therein.
<PAGE>

     F.  Simultaneously with the execution and delivery of this Agreement, and
as a condition and inducement to the Company's willingness to enter into this
Agreement, Hagemeyer N.V., a corporation organized under the laws of the
Netherlands ("Hagemeyer"), has executed, delivered and entered into a Guarantee
(the "Guarantee") for the benefit of the Company and any third party
beneficiaries under this Agreement pursuant to which Hagemeyer has, among other
things, unconditionally, absolutely and irrevocably guaranteed the full and
punctual payment and performance of all covenants, agreements, obligations and
liabilities of Parent, Purchaser and the Surviving Corporation (as defined
herein) contained in or in connection with the other agreements and transactions
contemplated by this Agreement.

                                   AGREEMENT

     NOW, THEREFORE, in consideration of the premises, the mutual
representations, warranties, covenants, agreements and conditions contained in
this Agreement, and for other good and valuable consideration the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:


                                  ARTICLE I.

                                   THE OFFER

     Section 1.1.  The Offer.

     (a)  Provided that none of the events set forth in clause (iii) of Annex A
hereto shall have occurred and be continuing, as promptly as practicable (but in
any event not later than five business days after the public announcement of the
execution and delivery of this Agreement), Parent shall cause Purchaser to
commence (within the meaning of Rule 14d-2 under the Securities Exchange Act of
1934, as amended (the "Exchange Act")), the Offer to purchase all of the
outstanding shares of Company Common Stock at a price of Twenty-Five Dollars
($25.00) per share, net to the seller in cash (as such may be increased by
Purchaser from time to time, the "Offer Consideration").  The obligation of
Parent and Purchaser to accept for payment and to pay for shares of Company
Common Stock validly tendered in the Offer and not withdrawn shall be subject
only to those conditions set forth in Annex A hereto.

     (b) Without the prior written consent of the Company, Purchaser shall not
(and Parent shall cause Purchaser not to):  (i) decrease the Offer Consideration
or change the form of consideration or decrease the number of shares of Company
Common Stock sought pursuant to the Offer; (ii) change the conditions to the
Offer (other than to increase the Offer Consideration); (iii) impose additional
conditions to the Offer; (iv) waive the condition that there shall be validly
tendered and not withdrawn prior to the time the Offer expires a number of
shares of Company Common Stock which, together with any shares of Company Common
Stock beneficially owned by Parent and its affiliates, constitutes at least a
two-thirds of the shares of Company Common Stock outstanding on a fully-diluted
basis as of the date of purchase; (v) terminate or withdraw the Offer or extend
the expiration date of the Offer (except as required by law) beyond the initial
expiration date thereof (which shall be the 20th business day after the
commencement (within the meaning of Rule 14d-2 under the Exchange Act) of the
Offer); or (vi) amend any term of the Offer in any manner adverse to holders of
shares of Company Common Stock.  Notwithstanding the provisions of the preceding
sentence:  (A) Purchaser may increase the Offer Consideration and may waive any
condition to the Offer (other than the condition referred to in clause (iv) of
the preceding sentence), in whole or in part, in its sole discretion; (B) the
Offer may be extended

                                       2
<PAGE>

by Purchaser in connection with an increase in the consideration to be paid
pursuant to the Offer so as to comply with applicable rules and regulations of
the United States Securities and Exchange Commission (the "SEC"); (C) if any of
the conditions to the Offer set forth in Annex A has not been satisfied or
waived, and if all of such conditions are then still reasonably capable of being
satisfied prior to the Termination Date (as defined in Section 10.1), Purchaser
shall extend the Offer for one additional period of ten (10) business days, and
may, at its discretion, extend the Offer from time to time (each such individual
extension not to exceed ten business days after the previously scheduled
expiration date) until such conditions are satisfied or waived, but in no event
beyond the Termination Date; and (D) the Offer may be extended by Purchaser, in
its sole discretion, for one additional period of up to ten business days, but
not beyond the Termination Date, if on the expiration date of the Offer (as it
may previously have been extended) the conditions of the Offer described in
Annex A hereto shall have been satisfied or earlier waived, but the number of
shares of Company Common Stock that have been validly tendered and not
withdrawn, together with any shares of Company Common Stock beneficially owned
by Parent and its affiliates, represents less than 90% of the then issued and
outstanding shares of Company Common Stock on a fully diluted basis. Subject
only to satisfaction or waiver of the conditions to the Offer set forth in Annex
A, Purchaser shall, and Parent shall cause Purchaser to, accept for payment and
pay for, in accordance with the terms of the Offer, all shares of Company Common
Stock validly tendered and not withdrawn pursuant to the Offer as soon as it is
permitted to do so under applicable law. Parent shall provide or cause to be
provided to Purchaser on a timely basis all funds necessary to accept for
payment and pay for all shares of Company Common Stock that Purchaser becomes
obligated to accept for payment and pay for pursuant to the Offer.

     Section 1.2.  Offer Documents.  As soon as practicable on the date of
commencement of the Offer, Parent and Purchaser shall (x) jointly file or cause
to be filed with the SEC a Tender Offer Statement on Schedule 14D-1 (the
"Schedule 14D-1") with respect to the Offer which shall contain the offer to
purchase and related letter of transmittal and other ancillary Offer documents
and instruments pursuant to which the Offer will be made (collectively with any
supplements or amendments thereto, the "Offer Documents") and shall contain (or
shall be amended in a timely manner to contain) all information which is
required to be included therein in accordance with the Exchange Act and the
rules and regulations thereunder and any other applicable law, and shall comply
in all material respects with the requirements of the Exchange Act and any other
applicable law and (y) mail or cause to be mailed the Offer Documents to the
record holders of the Company Common Stock.  Parent, Purchaser and the Company
each agrees promptly to correct any information provided by it for use in the
Offer Documents if and to the extent that it shall have become false or
misleading in any material respect, and Purchaser further agrees to take all
lawful action necessary to cause the Offer Documents as so corrected to be filed
promptly with the SEC and disseminated to the holders of Company Common Stock,
in each case as and to the extent required by applicable law.  In conducting the
Offer, Parent and Purchaser shall comply in all material respects with the
provisions of the Exchange Act and any other applicable law.  The Company and
its counsel shall be given the opportunity to review and comment on the Offer
Documents and any amendments thereto prior to the publication, dissemination or
filing thereof with the SEC.

     Section 1.3.  Company Actions.  The Company hereby consents to the Offer
and represents that:  (a) the Board of Directors of the Company (the "Company
Board"), at a meeting duly called and held, has, on the basis of matters
considered by the Company Board as of the


                                       3
<PAGE>

date of such meeting, (i) determined that each of the Offer and the Merger is
fair to and in the best interests of the holders of Company Common Stock, (ii)
approved and declared advisable this Agreement and the transactions contemplated
hereby, including the Offer and the Merger, (iii) such approval constitutes
approval by the Company Board of this Agreement and the transactions
contemplated hereby, including the Merger, for purposes of Part Five and Article
13 of the TBCA and (iv) resolved to recommend acceptance of the Offer and
approval and adoption of this Agreement and the Merger by the holders of Company
Common Stock; and (b) Salomon Smith Barney Inc. and William Blair & Company,
L.L.C. (together, the "Company Financial Advisors") have delivered to the Board
of Directors of the Company their separate written opinions to the effect that
as of the date of the Agreement the consideration to be received in the Offer
and the Merger, taken as a whole, is fair, from a financial point of view, to
the holders of Company Common Stock (other than Parent and its affiliates)
(photocopies of which have been or will be delivered to Parent). The Company
hereby agrees to file with the SEC a Solicitation/Recommendation Statement on
Schedule 14D-9 (together with all amendments and supplements thereto, the
"Schedule 14D-9") containing the recommendation of the Company Board referred to
in clause (a) (iv) of the preceding sentence (subject to the fiduciary duties of
the Company Board under Texas law) and shall mail or cause to be mailed the
Schedule 14D-9 to the holders of the Company Common Stock. The Company will use
its reasonable efforts to cause the Schedule 14D-9 to be filed with the SEC as
promptly as is practicable after, and if practicable on the same date as,
Parent's and Purchaser's Schedule 14D-1 is filed with the SEC and to permit such
Schedule 14D-9 to be mailed together with the Offer Documents; provided,
however, that in any event the Schedule 14D-9 shall be filed with the SEC and
mailed to the holders of Company Common Stock no later than 10 business days
following the commencement of the Offer. The Schedule 14D-9 shall comply in all
material respects with the Exchange Act and any other applicable law and shall
contain (or shall be amended in a timely manner to contain) all information
which is required to be included therein in accordance with the Exchange Act and
the rules and regulations thereunder and any other applicable law. The Company,
Parent and Purchaser each agrees promptly to correct any information provided by
it for use in the Schedule 14D-9 if and to the extent that it shall have become
false or misleading in any material respect, and the Company further agrees to
take all lawful action necessary to cause the Schedule 14D-9 as so corrected to
be filed promptly with the SEC and disseminated to the holders of Company Common
Stock, in each case as and to the extent required by applicable law. Parent,
Purchaser and their counsel shall be given the opportunity to review and comment
on the Schedule 14D-9 and any amendments thereto prior to the filing thereof
with the SEC. In connection with the Offer, the Company shall promptly furnish
Purchaser with security position listings and all available listings or computer
files containing the names and addresses of the record holders of the Company
Common Stock as of the latest practicable date and shall furnish Parent and
Purchaser with such information and assistance (including updated lists of
shareholders and lists of security positions) as Parent and Purchaser or any of
their agents may reasonably request in communicating the Offer to the record and
beneficial holders of Company Common Stock. Subject to the requirements of
applicable law, and except for such actions as are necessary to disseminate the
Offer Documents and any other documents necessary to consummate the Offer and
the Merger, Parent and Purchaser and each of their affiliates, associates,
partners, employees, agents and advisors shall hold in confidence the
information contained in such lists and files, shall use such information only
in connection with the Offer and the Merger, and, if this Agreement is
terminated, shall deliver promptly to the Company all copies of such information
in their possession.

                                       4
<PAGE>

     Section 1.4.  Designation of Company Directors after Completion of Offer.

     (a)  Promptly upon Purchaser's consummation of the Offer, Purchaser will be
entitled, subject to compliance with Section 14(f) of the Exchange Act, to
designate that number (rounded down to the next greatest whole number) of
directors on the Company Board that is equal to the product of the total number
of directors on the Company Board multiplied by the percentage that the
aggregate number of shares of Company Common Stock owned by Purchaser or any
affiliate of Purchaser (including for purposes of this Section 1.4 such shares
of Company Common Stock as are accepted for payment pursuant to the Offer but
excluding shares of Company Common Stock held by the Company or any Company
Subsidiaries) bears to the number of shares of Company Common Stock outstanding.
The Company will cause (i) each committee of the Company Board, (ii) the board
of directors of each Company Subsidiary, and (iii) each committee of such
Company Subsidiary board to include persons designated by Purchaser constituting
the same percentage of each such committee or board as Purchaser's designees are
of the Company Board.  The Company will, upon request by Purchaser, promptly
increase the size of the Company Board and/or exercise its best efforts to
secure the resignations of such number of directors as necessary to enable
Purchaser designees to be elected to the Company Board and to cause Purchaser's
designees to be so elected.  Nothing in this Section 1.4 will require the
Company to elect any person a director if such election would violate applicable
law.  After the time that Purchaser's designees constitute a majority of the
Company Board, any action on the part of the Company with respect to this
Agreement or any of the transactions contemplated hereby will require the vote
of a majority of the directors who are not employees of the Company or designees
of Purchaser.

     (b)  Subject to applicable law, the Company will promptly take all action
necessary pursuant to Section 14(f) of the Exchange Act and Rule 14f-1
promulgated thereunder in order to fulfill its obligations under this Section
1.4 and will include in the Schedule 14D-9 disseminated to stockholders promptly
after the commencement of the Offer (or an amendment thereof or an information
statement pursuant to Rule 14f-1 if Purchaser has not theretofore designated
directors) such information with respect to the Company and its officers and
directors as is required under Section 14(f) and Rule 14f-1 in order to fulfill
its obligations under this Section 1.4.  Parent and Purchaser will supply to the
Company and be solely responsible for any information with respect to itself and
its nominees, officers, directors and affiliates required by Section 14(f) and
Rule 14f-1.

                                  ARTICLE II.

                                   THE MERGER

     Section 2.1.  The Merger.

     (a)  At the Effective Time (as defined below) and subject to the terms and
conditions hereof and the provisions of the TBCA:  (i) Purchaser will be merged
with and into the Company in accordance with the TBCA; (ii) the separate
existence of Purchaser shall thereupon cease; and (iii) the Company shall
continue as the surviving corporation in the Merger (the "Surviving
Corporation"), as a wholly owned subsidiary of Parent.

     (b)  Subject to the terms and conditions hereof, the Merger shall be
consummated as promptly as practicable, but in any event no later than two
business days, after satisfaction or, to the extent permitted hereunder, waiver
of all of the conditions to each party's obligation to

                                       5
<PAGE>

consummate the Merger contained in Article IX, by duly filing appropriate
articles of merger (the "Articles of Merger"), together with a plan of merger
attached thereto setting forth only that information required by Article 5.01(B)
(or Article 5.16(B), if applicable) of the TBCA, in such form as is required by,
and executed in accordance with, the relevant provisions of the TBCA. The Merger
shall be effective at such time as the Articles of Merger shall have been duly
filed with the Secretary of State of the State of Texas and shall have become
effective in accordance with the TBCA (the "Effective Time"). The date on which
the Effective Time shall occur is referred to herein as the "Effective Date."

     (c)  The separate corporate existence of the Company, as the Surviving
Corporation, with all its purposes, objects, rights, privileges, powers,
certificates and franchises, shall continue unimpaired by the Merger.  The
Surviving Corporation shall succeed to all the properties and assets of the
Constituent Corporations and to all debts, causes of action and other interests
due or belonging to the Constituent Corporations and shall be subject to, and
responsible for, all the debts, liabilities and duties of the Constituent
Corporations with the effect set forth in Article 5.06 of the TBCA.

     Section 2.2.  Conversion of Capital Stock.  As of the Effective Time, by
virtue of the Merger:

     (a)  Capital Stock of Purchaser.  Each issued and outstanding share of the
capital stock of Purchaser shall be converted into and become one fully paid and
nonassessable share of common stock of the Surviving Corporation.

     (b)  Cancellation of Treasury Stock.  All shares of Company Common Stock
that are owned by the Company as treasury stock and any shares of Company Common
Stock owned by any direct or indirect wholly owned subsidiary of the Company
shall be cancelled and retired and shall cease to exist, and no stock of Parent
or other consideration shall be delivered in exchange therefor.

     (c)  Conversion of Company Common Stock.  Subject to Section 2.3(e), each
issued and outstanding share of Company Common Stock (other than shares to be
cancelled in accordance with Section 2.2(b) and Dissenting Shares (as defined
below)) shall be converted into the right to receive an amount of cash per share
equal to the Offer Consideration (such amount referred to in connection with the
Merger as the "Merger Consideration") payable to the holder thereof upon
surrender of the certificate representing such shares of Company Common Stock.
All such shares of Company Common Stock, when so converted, shall no longer be
outstanding and shall automatically be cancelled and retired and shall cease to
exist, and each holder of a certificate representing any such shares, shall
cease to have any rights with respect thereto, except the right to receive the
Merger Consideration, without interest, upon the surrender of such certificate
in accordance with Section 2.3.

     (d)  Shares of Dissenting Shareholders.  Notwithstanding anything in this
Agreement to the contrary, any issued and outstanding shares of Company Common
Stock held by any shareholder who has not voted such shares in favor of or
consented to the Merger and who complies with all the provisions of Article 5.12
of the TBCA (a "Dissenting Shareholder") concerning the right of shareholders to
dissent from the Merger and require appraisal of their shares of Company Common
Stock ("Dissenting Shares") will not be converted as described in Section
2.2(c), but will become the right to receive such consideration as may be
determined to

                                       6
<PAGE>

be due to such Dissenting Shareholder pursuant to the laws of the State of
Texas. If, after the Effective Time, such Dissenting Shareholder withdraws his
or her demand for appraisal or fails to perfect or otherwise loses his or her
right of appraisal, in any case pursuant to the TBCA, his or her shares of
Company Common Stock will be deemed to be converted as of the Effective Time
into the right to receive the Merger Consideration, without interest, upon the
surrender of such certificate in accordance with the terms of this Agreement.
The Company will give Parent (i) prompt notice of any demands for appraisal of
shares of Company Common Stock received by the Company and (ii) the opportunity
to participate in and direct all negotiations and proceedings with respect to
any such demands. The Company will not, without the prior written consent of
Parent, make any payment with respect to, or settle, offer to settle, or
otherwise negotiate, any such demands.

     Section 2.3.  Exchange of Certificates.

     (a)  Paying Agent.  As soon as practicable after the date hereof, but in
any event within fifteen (15) business days after the date hereof, Parent and
the Company shall enter into an agreement on customary terms with an appropriate
and qualified paying agent (the "Paying Agent"), which provides that Parent
shall deposit with the Paying Agent, for the benefit of the holders of shares of
Company Common Stock, for exchange in accordance with this Section 2.3 and the
Articles of Merger, through the Paying Agent, at least two (2) business days
prior to the Effective Time, cash in an amount equal to the aggregate amount of
Merger Consideration that may become payable pursuant to Section 2.2 (such
amount being hereinafter referred to as the "Exchange Fund").  Parent agrees to
use its commercially reasonable best efforts to cause the Paying Agent to comply
with the terms of this Section 2.3.

     (b)  Exchange Procedures.  As soon as practicable after the Effective Time,
the Paying Agent will mail to each holder of record of a certificate or
certificates that immediately prior to the Effective Time represented
outstanding shares of Company Common Stock (the "Certificates") (i) a notice
(advising that the Merger has become effective) and a letter of transmittal, in
customary and appropriate form, which shall specify that delivery shall be
effected, and risk of loss and title to the Certificates shall pass, only upon
delivery of the Certificates to the Paying Agent and (ii) instructions for use
by holders of Certificates in effecting the surrender of the Certificates in
exchange for the Merger Consideration.  Upon surrender of a Certificate for
cancellation to the Paying Agent or to such other agent or agents as may be
appointed by Parent, together with such letter of transmittal, duly executed,
and such other documents as may reasonably be required by the Paying Agent, the
holder of such Certificate shall be entitled in exchange therefor to receive,
and the Paying Agent shall promptly pay, after the Effective Time, the amount of
cash into which the shares theretofore represented by such Certificate have been
converted pursuant to the provisions of Section 2.2, and the Certificate so
surrendered shall forthwith be cancelled.  If any cash is to be paid to a name
other than that in which the Certificate surrendered in exchange therefor is
registered, the person requesting such payment shall pay to the Paying Agent any
transfer or other taxes required by reason of the payment of cash to a person
other than the registered holder of such Certificate or establish to the
satisfaction of the Paying Agent that such tax has been paid or is not
applicable.  Until surrendered as contemplated by this Section 2.3, each
Certificate shall be deemed at any time after the Effective Time to represent
only the right to receive upon such surrender the amount of cash contemplated by
this Section 2.3.  No interest will be paid or will accrue on any cash payable
pursuant to Section 2.2.

                                       7
<PAGE>

     (c)  Distributions with Respect to Unexchanged Shares.  No cash shall be
paid to the holder of any unsurrendered Certificate until the holder of record
of such Certificate shall surrender such Certificate in accordance with this
Section 2.3.  If any holder of converted shares of Company Common Stock shall be
unable to surrender such holder's Certificates because such Certificates shall
have been lost or destroyed, such holder may deliver in lieu thereof an
affidavit (and, if required by Parent, an indemnity bond) in form and substance
and with surety (if applicable) reasonably satisfactory to Parent.

     (d)  No Further Ownership Rights in Company Common Stock.  All cash paid
upon the surrender for exchange of the Certificates in accordance with the terms
hereof shall be deemed to have been paid in full satisfaction of all rights
pertaining to such shares of Company Common Stock theretofore represented by
such Certificates.  If, after the Effective Time, Certificates are presented to
the Surviving Corporation or the Paying Agent for any reason, they shall be
cancelled and exchanged as provided in this Section 2.3, except as otherwise
provided by law.

     (e)  Termination of Exchange Fund.  Any portion of the Exchange Fund that
remains undistributed to the shareholders of the Company six (6) months after
the Effective Time shall be delivered to Parent, upon demand, and any
shareholders of the Company who have not theretofore complied with this Article
II shall thereafter look only to Parent for payment of their claim for the
Merger Consideration.  All interest accrued in respect to the Exchange Fund
shall inure to the benefit of and be paid to Parent.

     (f)  No Liability.  None of Parent, Purchaser, the Company or the Paying
Agent shall be liable to any person in respect to any shares of Company Common
Stock (or dividends or distributions with respect thereto) or cash from the
Exchange Fund delivered to a public official pursuant to any applicable
abandoned property, escheat or similar law. If any Certificates shall not have
been surrendered prior to the end of the applicable period after the Effective
Time under escheat laws (or immediately prior to such earlier date on which any
payment in respect of such Certificates would otherwise escheat to or become the
property of any governmental entity), any such payment in respect of such
Certificates shall, to the extent permitted by applicable law, become the
property of the Surviving Corporation, free and clear of all claims or interest
of any person previously entitled thereto.

     (g)  Withholding Rights.  Parent, the Surviving Corporation and the Paying
Agent shall be entitled to deduct and withhold, from the consideration otherwise
payable pursuant to this Agreement to any former holder of shares of Company
Common Stock, such amounts as Parent, the Surviving Corporation, the Company (or
any of its Subsidiaries (as defined in Section 4.3) or the Paying Agent is
required to deduct and withhold with respect to the making of such payment under
the Internal Revenue Code of 1986, as amended (the "Code") or any provision of
state, local or foreign Tax law.  To the extent that amounts are so withheld by
Parent, the Surviving Corporation or the Paying Agent, such withheld amounts
shall be treated for all purposes of this Agreement as having been paid to the
former holder of the shares of Company Common Stock in respect of which such
deduction and withholding was made by Parent, the Surviving Corporation or the
Paying Agent.

                                       8
<PAGE>

     (h)  Stock Transfer Books.  The stock transfer books of the Company shall
be closed immediately upon the Effective Time and there shall be no further
registration of transfers of shares of Company Common Stock thereafter on the
records of the Company.

     Section 2.4.  Stock Options

     (a)  Immediately prior to the Effective Time, each then outstanding option
to purchase shares of Company Common Stock (other than options granted under the
Company's Employee Stock Purchase Plan (the "Employee Stock Purchase Plan")),
which is then exercisable (in each case, a "Company Option") shall be canceled
by the Company and in consideration of such cancellation, the Company shall pay
to the holders of Company Options an amount in respect thereof equal to the
product of (A) the excess, if any, of (i) the Merger Consideration over (ii) the
exercise price per share of Company Common Stock subject to the unexercised
portion of such Company Option immediately prior to its cancellation and (B) the
number of shares of Company Common Stock subject to the unexercised portion of
such Company Option immediately prior to its cancellation.  Such payment, if
any, shall be less any required withholding Taxes and without interest.  The
Company shall use its commercially reasonable best efforts to obtain the consent
of each holder of Company Options to such cancellation if such consent is
required under the terms thereof.

     (b)  Immediately prior to the Effective Time, each outstanding share of
restricted stock that is not vested shall be canceled by the Company without any
consideration whatsoever.

     (c)  Except as otherwise agreed to by the Company and Parent, the Company
shall use its reasonable best efforts to ensure that (i) all plans, programs or
arrangements providing for the issuance or grant of any interest in respect of
the capital stock of the Company or any of its Subsidiaries shall terminate as
of the Effective Time (including the Employee Stock Purchase Plan as provided in
Section 2.5 below).

     (d)  Prior to the consummation of the Offer, the Company shall, if
necessary, amend the terms of the applicable plans, programs and arrangements to
give effect to the provisions of this Section 2.4.

     Section 2.5.  Company Employee Stock Purchase Plan.  The Company Board
shall terminate the Employee Stock Purchase Plan effective November 15, 1999
(but subject to consummation of the Offer) and no further contributions to
purchase Company Common Stock or issuances of shares of Company Common Stock
under the Employee Stock Purchase Plan shall be permitted.  Each participant in
the Employee Stock Purchase Plan shall, in consideration for the termination of
the right to purchase shares of Company Common Stock thereunder, receive at the
Effective Time (or as soon as practicable thereafter) from the Company in lieu
of each share of Company Common Stock that could have been purchased under the
Employee Stock Purchase Plan had the then applicable Plan Year (as defined in
the Employee Stock Purchase Plan) ended on such termination date, an amount in
cash equal to the difference between the Merger Consideration and the Issue
Price (as defined in the Employee Stock Purchase Plan) determined with reference
to the first business day of the applicable Plan Year (as defined in the
Employee Stock Purchase Plan), to the extent such difference is a positive
number.  All funds contributed to the Employee Stock Purchase Plan which have
not been used to purchase Company Common Stock as of the termination date shall
be returned, in cash, without interest, to participants in the Employee Stock
Purchase Plan.

                                       9
<PAGE>

     Section 2.6.  Time and Place of Closing.  The closing of the Merger shall
take place at the offices of Mayor, Day, Caldwell & Keeton, L.L.P., 700
Louisiana, Suite 1900, Houston, Texas 77002, as promptly as practicable after
satisfaction or, to the extent permitted hereunder, waiver of all of the
conditions to each party's obligation to consummate the Merger contained in
Article IX.

                                 ARTICLE III.

                     CORPORATE ORGANIZATION AND GOVERNANCE
                          OF THE SURVIVING CORPORATION

     Section 3.1.  Articles of Incorporation.  At the Effective Time, the
Articles of Incorporation of the Company as in effect immediately prior to the
Effective Time, and until thereafter altered, amended or repealed in accordance
with the TBCA and the Articles of Incorporation and Bylaws of the Surviving
Corporation, shall be the Articles of Incorporation of the Surviving
Corporation.

     Section 3.2. Bylaws.  At the Effective Time, the Bylaws of the Company as
in effect immediately prior to the Effective Time, and until thereafter altered,
amended or repealed in accordance with the TBCA and the Articles of
Incorporation and Bylaws of the Surviving Corporation, shall be the Bylaws of
the Surviving Corporation.

     Section 3.3. Directors and Officers.  At and after the Effective Time,
until successors are duly elected or appointed and qualified in accordance with
applicable law or until their earlier death, resignation or removal in
accordance with the Surviving Corporation's Articles of Incorporation and
Bylaws, the directors and officers of Purchaser at the Effective Time shall be
the directors and officers of the Surviving Corporation.

                                  ARTICLE IV.

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company has delivered to Parent on or prior to the execution hereof a
disclosure schedule (the "Company Disclosure Schedule").  The information in the
Company Disclosure Schedule shall be deemed a part of the Company's
representations and warranties herein.  Except as disclosed in the Company
Disclosure Schedule, the Company represents and warrants to Parent as set forth
below:

     Section 4.1.  Corporate Existence and Power.  The Company is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Texas and has all corporate power required to own or lease its
properties and to carry on its business as now conducted.  The Company is duly
qualified to do business as a foreign corporation and is in good standing in
each jurisdiction where the nature of its activities makes such qualification
necessary, except where the failure to be so qualified or to be in good standing
would not have a Material Adverse Effect on the Company.  For purposes of this
Agreement, a "Material Adverse Effect," with respect to any person or entity,
shall mean any change, effect, event or occurrence that, individually or in the
aggregate with all other changes, effects, events or occurrences is or would
reasonably be expected to materially adversely impact (i) the financial
condition, assets, properties or results of operations of such person or entity
and its direct and indirect parents and subsidiaries (including the
Subsidiaries), taken as a whole, other than any such adverse effects relating to
general economic or market conditions or to the industry in which the Company

                                      10
<PAGE>

operates or (ii) the ability of such person or entity to perform its obligations
under this Agreement or to consummate the transactions contemplated hereby.  The
Company has delivered or made available to Parent true and complete copies of
the Articles of Incorporation and Bylaws of the Company.

     Section 4.2. Corporate Authorization.  The execution, delivery and
performance by the Company of this Agreement, and each agreement to be executed
by the Company in connection herewith, and the consummation by the Company of
the transactions contemplated hereby and thereby, are within the Company's
corporate powers and have been duly authorized by all necessary corporate
action, except for the approval of this Agreement and the transactions
contemplated hereby by the Company's shareholders to the extent required by
applicable law.  This Agreement and each agreement to be executed by the Company
in connection herewith have been duly and validly executed and delivered by the
Company and, assuming the due authorization, execution and delivery hereof and
thereof by each other party hereto and thereto, constitute valid and binding
agreements of the Company, enforceable against the Company in accordance with
their terms, except that (i) the enforceability hereof and thereof may be
subject to bankruptcy, insolvency, reorganization, moratorium or other similar
laws now or hereafter in effect relating to creditors' rights generally and (ii)
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.

     Section 4.3. Subsidiaries.  All of the Company's Subsidiaries are listed
or otherwise described on the Company Disclosure Schedule, and except as set
forth on the Company Disclosure Schedule, the Company has no Subsidiaries and
does not own, directly or indirectly, beneficially or of record, any shares of
capital stock or other security of any other entity or any other material
investment in any other corporation, partnership, limited liability company,
joint venture or similar entity.  The term "Subsidiary" or "Company Subsidiary"
means, when used with reference to any entity, any corporation or other
organization, whether incorporated or unincorporated, (i) of which such party or
any other subsidiary of such party is a general or managing partner or managing
member, (ii) the outstanding voting securities or interests of which, having by
their terms ordinary voting power to elect a majority of the Board of Directors
or others performing similar functions with respect to such corporation or other
organization, are directly or indirectly owned or controlled by such party or by
any one or more of its subsidiaries, or (iii) of which fifty percent (50%) or
more of the value of the outstanding equity securities or interests (including
membership interests) of which are owned directly or indirectly by such party.

     (a)  Each Company Subsidiary that is a corporation is a corporation duly
organized, validly existing and in good standing under the laws of its
jurisdiction of incorporation, except where the failure to be so would not
individually or in the aggregate have a Material Adverse Effect on the Company.
Each Company Subsidiary that is a partnership or a limited liability company is
duly formed and validly existing under the laws of its jurisdiction of
formation, except where the failure to be so would not individually or in the
aggregate have a Material Adverse Effect on the Company.

     (b)  Each Company Subsidiary has the corporate power, the limited liability
company power or the partnership power, as the case may be, to carry on its
business as it is now being

                                      11
<PAGE>

conducted or presently proposed to be conducted, except where the failure to be
so would not individually or in the aggregate have a Material Adverse Effect on
the Company.

     (c)  Each Company Subsidiary that is a corporation is duly qualified to do
business as a foreign corporation and is in good standing in each jurisdiction
where the nature of its activities makes such qualification necessary, except
where the failure to be so qualified would not have a Material Adverse Effect on
the Company.

     Section 4.4.  Governmental Authorization.  The execution, delivery and
performance by the Company of this Agreement, and each agreement to be executed
by the Company in connection herewith, and the consummation by the Company of
the transactions contemplated hereby and thereby, require no action by or in
respect of, or filing with, any court, administrative agency or commission or
other governmental authority or instrumentality, domestic or foreign
("Governmental Entity"), other than:

     (a)  the filing of the Articles of Merger in accordance with the TBCA;

     (b)  compliance with any applicable requirements of the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, as amended (the "HSR Act") and, if
applicable, similar provisions of the laws of Canada, Mexico and Chile;

     (c)  compliance with any applicable requirements of the Exchange Act and
the rules and regulations promulgated thereunder;

     (d)  compliance with any applicable requirements of the Securities Act of
1933, as amended (the "Securities Act"), and the rules and regulations
promulgated thereunder;

     (e)  compliance with any applicable foreign or state securities or "blue
sky" laws, rules or regulations; and

     (f)  such other filings or registrations with, or authorizations, consents
or approvals of, Governmental Entities, the failure of which to make or obtain
would not (i) result in a Material Adverse Effect on the Company or (ii)
materially and adversely affect the ability of the Company to consummate the
transactions contemplated hereby.

     Section 4.5.  Non-Contravention.  The execution, delivery and performance
by the Company of this Agreement, and each agreement to be executed by the
Company in connection herewith, and the consummation by the Company of the
transactions contemplated hereby and thereby, do not and will not:

     (a)  contravene or conflict with any provision of the respective charters
or bylaws (or similar governing documents) of the Company or any of the Company
Subsidiaries except where such contravention or conflict would not have a
Material Adverse Effect on the Company;

     (b)  assuming compliance with the matters referred to in Section 4.4 and
assuming the requisite approval of the Company's shareholders of the
transactions contemplated by this Agreement, contravene or conflict with or
constitute a violation of any provision of any law, regulation, judgment,
injunction, order or decree binding upon or applicable to the Company or

                                      12
<PAGE>

any of its respective properties or assets, except where such contravention,
conflict or violation would not have a Material Adverse Effect on the Company;

     (c)  conflict with or result in a material breach or violation of, or
constitute a default under (i) any material agreement, contract or other
instrument binding upon the Company or (ii) assuming compliance with the matters
referred to in Section 4.4, any material license, franchise, permit or other
similar authorization held by the Company, except where such conflict, breach,
violation, default or result would not have a Material Adverse Effect on the
Company; or

     (d)  result in the creation or imposition of any Lien (as defined below)
that could have a Material Adverse Effect on the Company.  For purposes of this
Agreement, the term "Lien" shall mean, with respect to any asset, any mortgage,
lien, pledge, charge, security interest or encumbrances of any kind in respect
of such asset.

     Section 4.6.  Capitalization.  The authorized capital stock of the Company
consists of 20,000,000 shares of Company Common Stock and 1,000,000 shares of
preferred stock, par value $1.00 per share (the "Company Preferred Stock").  As
of November 12, 1999, there were outstanding:

          (i)   7,192,264 shares of Company Common Stock and 2,575,811 shares of
     Company Common Stock held in treasury;

          (ii)  no shares of Company Preferred Stock; and

          (iii) Company Options to purchase an aggregate of 443,003 shares of
     Company Common Stock.

The items in clauses (i) through (iii) above are herein referred to collectively
as the "Company Securities."  All outstanding shares of Company Common Stock
have been duly authorized and validly issued and are fully paid and
nonassessable and free from any preemptive rights.  Except as set forth in this
Section 4.6, there are outstanding (i) no shares of capital stock or other
voting securities of the Company, (ii) no securities issued by the Company
convertible into or exchangeable for shares of capital stock or voting
securities of the Company, (iii) no options or other rights to acquire from the
Company, and no obligation of the Company to issue, any capital stock, voting
securities or securities convertible into or exchangeable for capital stock or
other voting securities of the Company and (iv) no equity equivalents, or
interests in the ownership or earnings of the Company or its subsidiaries to
repurchase, redeem or otherwise acquire any of the Company Securities or
ownership interest of the Subsidiaries.  Except as provided in Section 2.4,
there are no outstanding obligations of the Company or any Company Subsidiaries
to repurchase, redeem or otherwise acquire any Company Securities or ownership
interests of the Subsidiaries.  No holder of Company Securities has, as of the
date hereof, any contractual right to require the Company to file any
registration statement under the Securities Act or to include any such
securities in any registration statement proposed to be filed by the Company
under the Securities Act.  Except as disclosed in written information made
available to Parent, all of the outstanding capital stock of the Company's
Subsidiaries is owned by the Company, directly or indirectly, free and clear of
any Lien or any other limitation or restriction (including any restriction on
the right to vote or sell the same, except as may be provided as a matter of
law).

                                      13
<PAGE>

     Section 4.7.  SEC Reports and Financial Statements.  Each periodic report,
registration statement and definitive proxy statement filed by the Company with
the SEC since June 1, 1996 (as such documents since the time of their filing
have been amended and each document filed between the date hereof and the
Effective Time, the "Company SEC Reports"), which include all the documents
(other than preliminary material) that the Company was required to file with the
SEC, as of their respective dates, complied as to form in all material respects
with the requirements of the Securities Act or the Exchange Act, as the case may
be, applicable to such Company SEC Reports.  None of the Company SEC Reports
contained any untrue statement of a material fact or omitted to state any
material fact necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading, except for such
statements, if any, as have been modified or superseded by subsequent filings
prior to the date hereof.  The consolidated financial statements of the Company
included in such reports comply as to form in all material respects with
applicable accounting requirements and with the published rules and regulations
of the SEC with respect thereto, have been prepared in accordance with generally
accepted accounting principles applied on a consistent basis during the periods
involved (except as may be indicated in the notes thereto or, in the cases of
the unaudited statements, as permitted by Form 10-Q of the SEC) and fairly
present (subject in the case of the unaudited statements, to normal, recurring
audit adjustments) in all material respects the consolidated financial position
of the Company and the Company Subsidiaries as of the dates thereof and the
consolidated results of their operations and cash flows for the periods then
ended.

     Section 4.8.  Absence of Certain Changes or Events.  Except as and to the
extent disclosed or reflected in the Company SEC Reports filed with the SEC
prior to the date hereof (the "Filed Company SEC Reports"), neither the Company
nor any of its Subsidiaries has any liabilities or obligations of any nature,
whether or not accrued, contingent or otherwise, that would reasonably be
expected to have, individually or in the aggregate, a Material Adverse Effect on
the Company.  Except as and to the extent disclosed by the Company in the Filed
Company SEC Reports, from June 1, 1999 through the date of this Agreement, the
Company and its Subsidiaries have conducted their business in the ordinary and
usual course consistent with past practice and there has not been:

     (a)  any change, effect, event or occurrence which does or would reasonably
be expected to have, individually or in the aggregate, a Material Adverse Effect
on the Company.

     (b)  any declaration, setting aside or payment of any dividend or other
distribution with respect to any shares of capital stock of the Company, or any
repurchase, redemption or other acquisition by the Company or any of its
Subsidiaries of any Company Securities;

     (c)  any amendment of any term or condition of any outstanding
security of the Company or any of its Subsidiaries (except for acceleration of
vesting as a result of the transactions contemplated by this Agreement);

     (d)  (i) any incurrence or assumption  by the Company or any of its
Subsidiaries of any indebtedness for borrowed money other than in the ordinary
course of business consistent with past practice or (ii) any guarantee,
endorsement or contractual assumption of liability (whether directly,
contingently or otherwise) by the Company or any of its Subsidiaries for the
obligations of any other person other than in the ordinary course of business
consistent with past

                                      14
<PAGE>

practice (other than any wholly owned Subsidiary of the Company, or the Company,
with respect to its Subsidiaries);

     (e)   any creation or assumption by the Company or any of its
Subsidiaries of any Lien of any kind or nature whatsoever on any asset of the
Company or any of its Subsidiaries other than in the ordinary course of business
consistent with past practice;

     (f)  any making of any loan, advance or capital contribution to or
investment in any person by the Company or any of its Subsidiaries other than
(i) loans, advances or capital contributions to or investments in wholly owned
Subsidiaries of the Company or (ii) loans or advances to employees of the
Company or any of its Subsidiaries made in the ordinary course of business
consistent with past practice;

     (g)  (i) any contract or agreement entered into by the Company or any of
its Subsidiaries relating to any material acquisition or disposition of any
assets or business or (ii) any material modification, amendment, assignment,
termination or relinquishment by the Company or any of its Subsidiaries of any
material contract, license or other right (including any insurance policy naming
it as a beneficiary or a loss payee) other than, in the case of (i),
transactions, commitments, contracts or agreements in the ordinary course of
business consistent with past practice;

     (h)  any material change in any method of accounting or accounting
principles or practice (for financial accounting or tax purposes) by the Company
or any of its Subsidiaries, except for any such change required by reason of a
change in GAAP;

     (i)  any (i) grant of any severance or termination pay to any
director, officer or employee of the Company or any of its Subsidiaries, other
than grants of severance or termination pay to employees (but not officers or
directors) in the ordinary course of business consistent with past practice;
(ii) entering into any employment, deferred compensation or other similar
agreement (or any amendment to any such existing agreement) with any director,
officer or employee of the Company or any of its Subsidiaries; (iii)_increase
in benefits payable under any existing severance or termination pay policies or
employment agreements; or (iv) increase in compensation, bonus or other benefits
payable to directors, officers or employees of the Company or any of its
Subsidiaries other than, in the case of clause (iv) only, increases in
compensation, bonus or other benefits payable to employees of the Company or any
of its Subsidiaries in the ordinary and usual course of business consistent with
past practice or merit increases in salaries of employees at regularly scheduled
times in customary amounts consistent with past practices; or

     (j)  any action or proceeding commenced, threatened or proposed, to condemn
or take by eminent domain or other governmental action any real or personal
property owned or used by the Company and its Subsidiaries, other than such
actions or proceedings that have not had and would not reasonable be expected to
have, individually or in the aggregate, a Material Adverse Effect on the
Company.

     Section 4.9.  Disclosure Documents.  None of the information supplied or to
be supplied by the Company for inclusion in the Offer Documents, the Schedule
14D-9 or any proxy statement relating to a meeting of the Company's shareholders
held in connection with the

                                      15
<PAGE>

shareholders' approval of the transactions contemplated hereby (if applicable,
and as the same may be amended or supplemented from time to time, the "Proxy
Statement") will, either at the time of publication, filing with the SEC or
mailing thereof to shareholders of the Company or, in the case of the Proxy
Statement (if applicable), at the time of the meeting of such shareholders held
in connection with the transactions contemplated hereby, contain any untrue
statement of a material fact or omit to state any material fact necessary in
order to make the statements therein, in light of the circumstances under which
they are made, not misleading. The Schedule 14D-9 and the Proxy Statement (if
applicable) will comply as to form in all material respects with the provisions
of the Exchange Act, except that no representation or warranty is made by the
Company with respect to information supplied by Parent or Purchaser for
inclusion therein.

     Section 4.10.  Litigation.  There is no action, suit, proceeding, claim or
investigation pending, or to the knowledge of the Company, threatened against
the Company or any Company Subsidiary or any of their respective properties or
assets which is, individually or in the aggregate, reasonably likely to have a
Material Adverse Effect on the Company and its Subsidiaries taken as a whole.
Neither the Company nor any Subsidiary is subject to an outstanding material
judgment, order, writ, injunction or decree.

     Section 4.11.  Contracts.  All materials contracts and agreements (and all
amendments, modifications and supplements thereto and all side letters to which
the Company or any of its Subsidiaries is a party materially affecting the
obligations of any party thereunder) to which the Company or any of its
Subsidiaries is a party or by which any of their properties or assets are bound
(collectively, the "Material Contracts") are legally valid and binding in
accordance with their terms and in full force and effect except that (i) the
enforceability thereof may be subject to bankruptcy, insolvency, reorganization,
moratorium or other similar laws now or hereafter in effect relating to
creditors' rights generally and (ii) 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.  The Company has complied in all material respects with such
contracts, leases, agreements and arrangements, and, to the knowledge of the
Company, all other parties to such contracts, leases, agreements and
arrangements have complied with the provisions of such contracts, leases,
agreements and arrangements, and to the knowledge of the Company, no party is in
default thereunder, and no event has occurred (including giving notice) which,
but for the passage of time or the giving of notice or both, would constitute a
default thereunder, except, in each case, where the invalidity of the lease,
contract, agreement or arrangement or the default or breach thereunder or
thereof would not, individually or in the aggregate, have a Material Adverse
Effect on the Company.

     Section 4.12.  Real Property; Material Assets; Tangible Property.

     (a)  The Company Disclosure Schedule sets forth all of the real property
owned by the Company or any Company Subsidiary.  The Company and each Company
Subsidiary has good and marketable title to all real property and other assets
it owns subject to no encumbrance, lien, charge or other restriction (including,
without limitation, any restriction on transfer) of any kind or character and
there is no condition, restriction or reservation affecting the title to or
utility of any of its material properties or assets, other than (i) such
imperfections or irregularities of title, encumbrances, claims, liens, charges
or other conditions, restrictions or reservations as do not materially affect
the use of the properties or assets subject thereto or affected thereby or
otherwise materially impair business operations at such properties, (ii)
statutory liens securing

                                      16
<PAGE>

payments (including taxes) not yet due and (iii) such imperfections or
irregularities of title, encumbrances, claims, liens, charges or other
conditions, restrictions or reservations as do not have a Material Adverse
Effect on the Company.

     (b)  Except as does not have a Material Adverse Effect on the Company, with
regard to buildings and improvements owned by the Company, (i) there are no
structural or nonstructural defects of a material character, (ii) such buildings
and improvements are not in violation of the requirements of any Governmental
Entity, and all necessary final certificates of occupancy have been issued for
such buildings and improvements, (iii) all licenses and permits required by
Governmental Entities have been issued for such buildings and improvements and
the operations conducted in connection with them and (iv) the current use of the
buildings and improvements does not violate such licenses and permits.

     (c)  The Company Disclosure Schedule sets forth all leases, subleases and
other agreements under which the Company or any of its Subsidiaries uses or
occupies or has the right to use or occupy, now or in the future, any real
property (the "Real Property Leases").  Each of the Company and its Subsidiaries
has a good and valid leasehold interest in each parcel of real property leased
by it free and clear of all Liens.

     (d)  With such exceptions as have not had and would not reasonably be
expected to have, individually or in the aggregate, a Material Adverse Effect on
the Company, (i) each of the Real Property Leases is valid and enforceable in
accordance with its terms, (ii) there is no default under any Real Property
Leases either by the Company or any of its Subsidiaries or, to the knowledge of
the Company, by any other party thereto, (iii) no event has occurred that with
the lapse of time or the giving of notice or both would constitute a default
thereunder by the Company or any of its Subsidiaries (including the consummation
of the Merger) or, to the knowledge of the Company, any other party, and (iv) no
party to any such contract or agreement has given notice to the Company or any
of its Subsidiaries of or made any claim against the Company or any of its
Subsidiaries with respect to any breach or default thereunder.

     (e)  With such exceptions as have not had and would not reasonably be
expected to have, individually or in the aggregate, a Material Adverse Effect on
the Company, (i) with respect to the tangible properties and assets of the
Company and its Subsidiaries (excluding real property) that are material to the
conduct of the business of the Company or any of its Subsidiaries, the Company
and its Subsidiaries have good title to, or hold pursuant to valid and
enforceable leases or licenses, all such properties and assets and (ii) all of
the assets of the Company and its Subsidiaries have been maintained and repaired
for their continued operation and are in good repair and condition.


     Section 4.13.  Taxes.

     (a)  The Company and the Company Subsidiaries (i) have timely filed (or the
Company had timely filed in their behalf) or will file or cause to be filed when
due (taking into account extensions) with the appropriate Federal, state, local,
provincial, foreign and other governmental agencies, all material tax returns,
estimates, reports and documents of a similar nature relating to taxes required
by applicable laws to be filed by it, and all such returns, estimates and
reports are or will be at the time of filing, true, complete and correct in all
material respects, (ii) either paid when due and payable or established adequate
reserves or otherwise

                                      17
<PAGE>

accrued on the Company's financial statements all material Federal, state,
local, municipal, governmental, provincial or foreign taxes, levies, duties,
licenses and registration fees and charges of any nature whatsoever, and
unemployment and social security taxes and income tax withholding, including
interest and penalties thereon ("Taxes"), and there are no material taxes,
interest, penalties, assessments or deficiencies claimed in writing by any
taxing authority and received by the Company that, in the aggregate, would
result in any Tax liability in excess of the amount of the reserves or accruals,
and (iii) have or will establish in accordance with its normal accounting
practices and procedures accruals and reserves that, in the aggregate, are
adequate for the payment of all material Taxes not yet due and payable and
attributable to any period preceding the Effective Time.

     (b)  Neither the Company nor any predecessor corporation, nor any of their
respective subsidiaries, has executed or filed with the Internal Revenue Service
("IRS") or any other taxing authority any agreement or other document with
respect to Taxes, including any agreement extending, or having the effect of
extending, the period of assessment or collection of any material Taxes.

     (c)  During the three (3) years prior to the date of this Agreement,
neither the Company nor any Subsidiary has constituted either a "distributing
corporation" or a "controlled corporation" (within the meaning of Section
355(a)(1)(A) of the Code) in a distribution of stock qualifying for Tax-free
treatment under Section 355 of the Code.

     (d)  No audit or other administrative or court proceedings in which the
total proposed adjustments to net income exceed $50,000 are pending with respect
to Federal, state or foreign income or franchise Taxes of the Company or any of
its Subsidiaries and no written notice thereof has been received.

     (e)  No claim in writing has been made by a Tax authority in a jurisdiction
where neither the Company nor any Subsidiary files Tax returns that the Company
or any Subsidiaries is or may be subject to taxation in that jurisdiction.

     (f)  Neither the Company nor any Subsidiary is a party to any contract,
agreement or other arrangement which provides for the payment of any amount
which would not be deductible by reason of Section 162(m) or Section 280G of the
Code.

     (g)  The Company has made available to Parent true and complete copies of
(i) all Federal, state and foreign income and franchise Tax Returns of the
Company and any Subsidiaries for the preceding three taxable years and (ii) any
audit report issued within the last three years (or otherwise with respect to
any audit or proceeding in progress) relating to Taxes of the Company or any of
its Subsidiaries.

     (h)  No Subsidiary of the Company owns any shares of Company Common Stock.

     Section 4.14. Employee Benefit Plans; ERISA.

     (a)  Neither the Company nor any of the Company Subsidiaries is a party to
any oral or written (i) employment, severance, collective bargaining or
consulting agreement not terminable on 60 days' or less notice, (ii) agreement
with any current or former executive officer or other current or former key
employee of the Company or any Company Subsidiary (A) the

                                      18
<PAGE>

benefits of which are contingent, or the terms of which are materially altered,
upon the occurrence of a transaction involving the Company or any Company
Subsidiary of the nature of any of the transactions contemplated by this
Agreement, (B) providing any term of employment or compensation guarantee
extending for a period longer than six months, or (C) providing severance
benefits or other benefits after the termination of employment of such executive
officer or key employee regardless of the reason for such termination of
employment, (iii) agreement, plan or arrangement under which any person may
receive payments subject to the tax imposed by Section 4999 of the Code, or (iv)
agreement or plan, including, without limitation, any stock option plan, stock
appreciation rights plan, restricted stock plan or stock purchase plan, the
benefits of which would be increased, or the vesting of benefits of which would
be accelerated, by the occurrence of any of the transactions contemplated by
this Agreement or the value of any of the benefits of which will be calculated
on the basis of any of the transactions contemplated by this Agreement.

     (b)  The Company has delivered or made available to Parent full and
complete copies of all "Employee Pension Benefit Plans" ("Pension Plans") and
all "Employee Welfare Benefit Plans" ("Welfare Plans") as such terms are defined
in Sections 3(2) and 3(1) respectively of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA"), which are maintained, contributed
to, or required to be contributed to by the Company or any corporation or other
entity which under Section 4001(b) of ERISA is under common control with the
Company (a "Company ERISA Affiliate").  Each Pension Plan and Welfare Plan of
the Company and the Company ERISA Affiliates has been maintained in all material
respects in compliance with its terms and all provisions of ERISA and the Code
(including rules and regulations thereunder) and other applicable laws.  Neither
the Company nor any Company ERISA Affiliate is subject to potential liability
under Section 4069(a) of ERISA.

     (c)  No Pension Plan or Welfare Plan of the Company or any Company ERISA
Affiliate is currently subject to an audit or other investigation by the IRS,
the Department of Labor, the Pension Benefit Guaranty Corporation or any other
Governmental Entity nor are any such plans subject to any lawsuits or legal
proceedings of any kind or to any material pending disputed claims by employees
or beneficiaries covered under any such plan or by any other parties.

     (d)  No "prohibited transaction," as defined in Section 406 of ERISA or
Section 4975 of the Code, resulting in material liability to the Company or any
Company ERISA Affiliate has occurred with respect to any Pension Plan or Welfare
Plan.  The Company has no knowledge of any breach of fiduciary responsibility
under Part 4 of Title I of ERISA which has resulted in or would result in any
material liability to the Company, any trustee, administrator or fiduciary of
any Pension Plan or Welfare Plan of the Company or any Company ERISA Affiliate.

     (e)  Neither the Company nor any Company ERISA Affiliate has maintained or
contributed to, or been obligated or required to contribute to, a "Multiemployer
Plan," as such term is defined in Section 4001(a)(3) of ERISA.  Neither the
Company nor any Company ERISA Affiliate has either withdrawn, partially or
completely, or instituted steps to withdraw, partially or completely, from any
Multiemployer Plan nor has any event occurred which would enable a Multiemployer
Plan to give notice of and demand payment of any material withdrawal liability
with respect to the Company or any Company ERISA Affiliate.

                                      19
<PAGE>

     (f)  There is no contract, agreement, plan or arrangement covering any
employee or former employee of the Company or any Company ERISA Affiliate that,
individually or collectively, could give rise to the payment of any material
amount that would not be deductible pursuant to the terms of Sections 162(m) or
280G of the Code.

     (g)  The Company has delivered or made available to Parent full and
complete copies or descriptions of each Pension Plan, Welfare Plan and each
other material agreement, policy, plan or other arrangement, whether written or
oral, express or implied, fixed or contingent, to which the Company or any
Company ERISA Affiliate is a party or by which the Company or any Company ERISA
Affiliate is bound, which is or relates to a pension, option, bonus, deferred
compensation, retirement, stock purchase, profit-sharing, severance pay, health,
welfare, incentive, vacation, sick leave, medical disability, hospitalization,
life or other insurance or fringe benefit plan, policy or arrangement
(collectively, "Company Employee Benefit Plans").

     (h)  The Company has delivered or made available to Parent, for each
Pension Plan which is intended to be "qualified" within the meaning of Section
401(a) of the Code, a copy of the most recent determination letter issued by the
IRS to the effect that each such Plan is so qualified and that each trust
created thereunder is tax exempt under Section 501 of the Code, and the Company
is unaware of any fact or circumstances that would jeopardize the qualified
status of each such Pension Plan or the tax exempt status of each trust created
thereunder.

     (i)  The Company does not sponsor, maintain, participate in or contribute
to (and is not required to contribute to) (i) any Pension Plan that is subject
to minimum funding requirements of Section 412 of the Code or Section 302 of
ERISA, or Title IV of ERISA (ii) foreign Pension Plans; or (iii) voluntary
employee benefit associations intended to be exempt from Federal Income Tax
under Section 501(c)(9) of the Code.

     (j)  Except as would not, individually or in the aggregate, have a Material
Adverse Effect on the Company, (i) all payments required to be made by or under
any Company Employee Benefit Plan, any related trusts, insurance policies or
ancillary agreements, or any collective bargaining agreement have been timely
made, and (ii) the Company and its Subsidiaries have performed all obligations
required to be performed by them under any Company Employee Benefit Plan.

     (k)  None of the Company Employee Benefit Plans provides for post-
employment life or health insurance, benefits or coverage for any participant or
any beneficiary of a participant, except as may be required under the
Consolidated Omnibus Budget Reconciliation Act of 1985, as amended, or as may be
offered as individual conversion rights.

     (l)  Neither the Company nor any of its Subsidiaries currently maintains or
has ever previously maintained a Pension Plan which is not intended to be
"qualified" within the meaning of Section 401(a) of the Code.

     Section 4.15.  Labor Matters.  (a)  Neither the Company nor any of the
Company Subsidiaries is a party to any collective bargaining agreement or other
labor union contract applicable to persons employed by the Company or any
Company Subsidiary, and, to the knowledge of the Company, there are no
activities or proceedings of any labor union or any such employees to organize
any such employees.

                                      20
<PAGE>

     (b)  There are no unfair labor practice charges, grievances or complaints
pending or threatened in writing by or on behalf of any employee or group of
employees of the Company or its Subsidiaries.

     (c)  There are no complaints, charges or claims against the Company or its
Subsidiaries pending, or threatened in writing to be brought or filed, with any
Governmental Entity or arbitrator based on, arising out of, in connection with,
or otherwise relating to the employment or termination of employment of any
individual by the Company or any of its Subsidiaries.

     (d)  Except for violations which do not have and would not reasonably be
expected to have, individually or in the aggregate, a Material Adverse Effect on
the Company, the Company and each of its Subsidiaries is in compliance with all
laws relating to the employment of labor, including all such laws and orders
relating to wages, hours, collective bargaining, discrimination, civil rights,
safety and health, workers' compensation and the collection and payment of
withholding and/or Social Security Taxes and similar Taxes. The Company and each
of its Subsidiaries has complied with the Workers Adjustment and Retraining
Notification Act (or any similar state or local law) and has not incurred any
liabilities or obligations in connection therewith which remain outstanding.

     Section 4.16.  Compliance with Laws.  Except for violations which do not
have and would not have, individually or in the aggregate, a Material Adverse
Effect on the Company, neither the Company nor any Company Subsidiary is in
violation or has received any notices of violations of federal, state or local
laws, regulations or ordinances relating to its business and operations,
including, without limitation, the Occupational Safety and Health Act and the
Americans with Disabilities Act, and no notice of any pending inspection or
inquiry or of the violation of any such law, regulation or ordinance has been
received by the Company or any Company Subsidiary.

     Section 4.17.  Environmental Matters.

     (a)  Definitions.  As used in this Agreement, "Environmental Law" means any
federal, state or local statute, regulation or ordinance pertaining to the
protection of human health or the environment and any applicable orders,
judgments, decrees, permits, licenses or other authorizations or mandates under
such laws.  "Hazardous Substance" means any hazardous, toxic, radioactive or
infectious substance, material or waste as defined, listed or regulated under
any Environmental Law, and includes without limitation petroleum oil and its
fractions.  "Contamination" means the existence (actual or reasonably suspected)
in the environment of a Hazardous Substance, if the existence or suspected
existence of such Hazardous Substance requires any investigatory, remedial,
removal or other response action under any Environmental Law, if such response
action legally could be required by any Governmental Entity.

     (b)  Environmental Compliance.

          (i)  The Company and each Company Subsidiary possesses all material
     governmental and other licenses it is required to carry under any
     Environmental Law for its business as now conducted.  No material violation
     exists in respect of, and no proceeding is pending or threatened to revoke
     or limit, any such license.  The Company and each Company Subsidiary is
     operating its business in material compliance with all

                                      21
<PAGE>

     Environmental Laws. No incident regarding environmental matters has
     occurred in connection with the business of the Company or any Company
     Subsidiary that was required to be reported to a Governmental Entity under
     any Environmental Law that was not so reported, except where the failure to
     report would not have a Material Adverse Effect on the Company.

          (ii)  No real property currently or previously owned, leased or
     occupied by the Company or any Company Subsidiary is or during the
     Company's or any Company Subsidiary's ownership or occupation was used as a
     hazardous waste treatment, storage or disposal facility within the meaning
     of Subtitle C of the Resource Conservation and Recovery Act ("RCRA") or any
     comparable state Environmental Law.  No real property currently owned,
     leased or occupied by the Company or any Company Subsidiary and, to the
     Company's knowledge, no real property previously owned, leased or occupied
     by the Company or any Company Subsidiary is listed on the National Priority
     List or the Comprehensive Environmental Response, Compensation and
     Liability Information System list compiled by the Environmental Protection
     Agency or any comparable listing compiled by any state or local
     Governmental Entity having jurisdiction over environmental matters.

          (iii)  Neither the Company nor any Company Subsidiary has received
     notice from any Governmental Entity or other person that it has been named
     as a responsible or potentially responsible party with respect to any site
     listed on the lists described in paragraph (ii) above or that it otherwise
     is potentially liable for Contamination under any Environmental Law.

          (iv)  Except as would not have a Material Adverse Effect on the
     Company, no portion of any property currently owned, leased or occupied by
     the Company or any Company Subsidiary is Contaminated.  Except as would not
     have a Material Adverse Effect on the Company, with respect to property
     previously owned, leased or occupied by the Company or any Company
     Subsidiary, no Contamination occurred during the Company's or any Company
     Subsidiary's ownership, lease or occupancy.

     Section 4.18.  Insurance. The Company and all of its Subsidiaries maintain
insurance with respect to their respective properties and business against loss
or damage of the kinds customarily insured against by corporations of
established reputations engaged in the same or similar business and similarly
situated, of such types and in amounts as disclosed to Parent.  Within the past
three (3) years, neither the Company nor any of its Subsidiaries has received
any refusal of insurance coverage or any notice that a defense will be afforded
with reservation of rights, or any notice of any cancellation or other
indication that any Policy (as defined below) is no longer in full force and
effect or will not be renewed or that the issuer of any Policy is not willing or
able to perform its obligations thereunder.  To the knowledge of the Company,
there are no outstanding requirements or recommendations by any current insurer
or underwriter with respect to the business or assets of the Company or any of
its Subsidiaries which require or recommend changes in the conduct of their
respective businesses, or require any repairs or other work to be done with
respect to any of the Company's or any of its Subsidiaries' assets, properties
or products.  All material property (fire and extended coverage perils),
business interruption, public liability, workers' compensation, directors' and
officers' liability and other insurance policies and fidelity and surety bonds
of the Company or any Company Subsidiary in

                                      22
<PAGE>

the Company's possession that have been provided to Parent (the "Policies") are
currently in full force and effect. To the Company's knowledge, there are no
disputes with insurers under the Policies, and all premiums due and payable
thereto have been paid. To the Company's knowledge, there are no pending or
threatened cancellations or nonrenewals or premium increases with respect to any
of the Policies, and the Company and each Company Subsidiary is in compliance
with all material conditions contained in its Policies.

     Section 4.19.  Intellectual Property.

     (a) The term "Intellectual Property Assets" means collectively:

         (i)  all registered and unregistered trademarks, service marks and
     applications (collectively, "Marks");

         (ii) all patents and patent applications (collectively, "Patents");

         (iii) all copyrights in both published works and unpublished works
     that are material to the Company's or any Company Subsidiary's businesses
     (collectively, "Copyrights"); and

         (iv)  all trade secrets used in the conduct of the businesses of the
     Company and Company Subsidiaries.

     (b)  The Company and each Company Subsidiary owns, has the right to use,
sell, license, dispose of, and to bring actions for the misappropriation of all
of the Intellectual Property Assets, material to the conduct of its business
without any conflict with or infringement of the rights of others, free and
clear of all liens, charges, encumbrances or other restrictions of any kind.

     (c)  To the Company's knowledge, no Intellectual Property Asset material to
the conduct of business of the Company or any Company Subsidiary is infringed or
has been challenged.

     (d)  There is no action, suit, proceeding, judgment, order or writ pending,
or to the Company's knowledge, threatened against the Company or any Company
Subsidiary contesting the validity, ownership or right to use, sell, license,
dispose of or to bring actions for the misappropriation of the Intellectual
Property Assets material to the conduct of its business.

     (e)  Subject to such exceptions as have not and would not reasonably be
expected to have, individually or in the aggregate, a Material Adverse Effect,
there have been no claims made or notices that the conduct of the Company's or
any of its Subsidiaries' business has infringed the intellectual property rights
of any third party.

     (f) To the knowledge of the Company, (i) the Company and its Subsidiaries
have taken all reasonably necessary measures to protect and preserve the
validity and enforceability of the Intellectual Property Assets and the goodwill
associated therewith, including, without limitation, the confidentiality and
enforceability of trade secrets and the confidentiality of all confidential and
proprietary information included within the Intellectual Property Assets, and
(ii)

                                      23
<PAGE>

no trade secret, or confidential and proprietary information has been disclosed
to any third party other than pursuant to appropriate non-disclosure agreements
consistent with industry practice.

     Section 4.20.  Finders' Fees.  Except for Salomon Smith Barney Inc. and
William Blair & Company, L.L.C., there is no investment banker, broker, finder
or other intermediary that has been retained by or is authorized to act on
behalf of the Company who is entitled to any fee or commission in connection
with the transactions contemplated by this Agreement.

     Section 4.21.  Opinions of Financial Advisors.  The Board of Directors of
the Company has received the separate opinions of the Company Financial Advisors
to the effect that, as of the date of this Agreement, the consideration to be
received in the Offer and Merger, taken as a whole, is fair, from a financial
point of view, to the holders of Company Common Stock (other than of Parent and
its affiliates).

     Section 4.22.  Licenses; Approvals.  The Company and each Company
Subsidiary hold all licenses, permits and other regulatory approvals necessary
to conduct their respective businesses as presently conducted except where the
failure to obtain or hold such license, permit or regulatory approval would not
have a Material Adverse Effect on the Company.  All such licenses, permits and
other regulatory approvals related to the business, operations and facilities of
the Company and each Company Subsidiary are in full force and effect, except
where any failure of such license, permit or regulatory approval to be in full
force and effect would not have a Material Adverse Effect on the Company.

     Section 4.23.  Year 2000 Compliance.  Except as would not reasonably be
expected to have, individually or in the aggregate, a Materially Adverse Effect
on the Company and the Subsidiaries taken as a whole, the functions, including
without limitation, date-reliant (which includes year-reliant) functions of all
hardware, software, computers, equipment, devices with embedded electronics and
business critical systems used in the conduct of the business of the Company or
the Company Subsidiaries (collectively, the "Systems") are capable of continuing
to operate up to, during and after the year 2000 without the necessity of any
re-programming or the installation of any new microchip, processor or other
equipment, (ii) neither the performance nor functionality of the Systems will be
affected by any changes caused by the advent of the year 2000 to the field
configuration which contains the date information within any part of the Systems
and (iii) the Systems shall suffer no faults in the processing of dates and
date-dependent information or data, including, without limitation, in
calculations, comparisons and sequencing of information or data. To the
knowledge of the Company, the Systems shall be free of surreptitious codes, such
as back door, time bomb, drop dead devices or other software routine designed to
disable a computer program automatically with the passage of time, and
unauthorized codes such as a computer virus, Trojan horse, worm or other
software routines or hardware components designed to permit unauthorized access
or to disable, erase or otherwise harm software, hardware or data. The Company
and its Subsidiaries have not received written notice from any customer,
supplier or financial institution that such party expects its operations to be
disrupted as a result of Systems failures due to year 2000 problems, which
disruption, individually or in the aggregate, would reasonably be expected to
have a Material Adverse Effect on the Company and the Subsidiaries taken as a
whole.

     Section 4.24.  TBCA Article 13.  The Company Board has approved this
Agreement and each agreement to be executed by the Company in connection
herewith, and taken such actions

                                      24
<PAGE>

sufficient to render the provisions of Article 13 of the TBCA inapplicable to
this Agreement and the transactions contemplated herein and therein.

     Section 4.25.  Absence of Questionable Payments.  Neither the Company nor
any of its Subsidiaries nor, to the Company's knowledge, any director, officer,
agent, employee or other person acting on behalf of the Company or any of its
Subsidiaries, has used any corporate or other funds for unlawful contributions,
payments, gifts, or entertainment, or made any unlawful expenditures relating to
political activity to government officials or others or established or
maintained any unlawful or unrecorded funds in violation of Section 30A of the
Exchange Act.  Neither the Company nor any of its Subsidiaries nor, to the
Company's knowledge, any director, officer, agent, employee or other person
acting on behalf of the Company or any of its Subsidiaries, has accepted or
received any unlawful contributions, payments, gifts, or expenditures.  To the
Company's knowledge, the Company and each of its Subsidiaries which is required
to file reports pursuant to Section 12 or 15(d) of the Exchange Act is in
compliance with the provisions of Section 13(b) of the Exchange Act.

     Section 4.26.  Suppliers and Customers.  Since January 1, 1999, neither the
Company's nor any of its Subsidiaries' relationship with any material customer
or supplier has been terminated or materially altered.  The Company and each of
its Subsidiaries has good commercial relationships with each of its material
suppliers and to the Company's knowledge, there are no facts concerning such
suppliers that would reasonably be expected to result in any material
interruption in the timely supply by such supplier to the Company or any of its
Subsidiaries of any such materials other than ordinary course delays experienced
from time to time. Neither the Company nor any of its Subsidiaries has received
any indication that any such material supplier intends to terminate or
materially alter the terms of its supply relationship with the Company or any of
its Subsidiaries.  The Company and each of its Subsidiaries has good commercial
relationships with its material customers, and neither the Company nor any of
its Subsidiaries has received any indication that any such customer intends to
terminate or materially alter its relationship with the Company or any of its
Subsidiaries.

                                  ARTICLE V.

                    REPRESENTATIONS AND WARRANTIES OF PARENT

     Parent has delivered to the Company on or prior to the execution hereof a
disclosure schedule (the "Parent Disclosure Schedule").  The information in the
Parent Disclosure Schedule shall be deemed a part of Parent's representations
and warranties herein.  Except as disclosed in the Parent's Disclosure Schedule,
Parent represents and warrants to the Company as set forth below:

     Section 5.1.  Corporate Existence and Power.

     (a)  Parent is a corporation duly organized, validly existing and in good
standing under the laws of the State of Delaware and has all corporate power
required to own or lease its properties and to carry on its business as now
conducted.  Parent is duly qualified to do business as a foreign corporation and
is in good standing in each jurisdiction where the nature of its activities
makes such qualification necessary, except where the failure to be so qualified
or to be in good standing would not have a Material Adverse Effect on Parent.
Parent has delivered or made available to the Company true and complete copies
of the certificate of incorporation and bylaws of Parent.

                                      25
<PAGE>

     (b)  Purchaser is a corporation duly organized, validly existing and in
good standing under the laws of the State of Texas and has all corporate power
required to own or lease its properties and to carry on its business as now
conducted.  Purchaser is duly qualified to do business as a foreign corporation
and is in good standing in each jurisdiction where the nature of its activities
makes such qualification necessary, except where the failure to be so qualified
or to be in good standing would not have a Material Adverse Effect on Purchaser.
Parent or Purchaser has delivered or made available to the Company true and
complete copies of the certificate of incorporation and bylaws of Purchaser.

     Section 5.2.  Corporate Authorization.  The execution, delivery and
performance by Parent and Purchaser of this Agreement, and each agreement to be
executed by Parent and Purchaser in connection herewith, and the consummation by
Parent and Purchaser of the transactions contemplated hereby and thereby, are
within Parent's and Purchaser's corporate powers and have been duly authorized
by all necessary corporate action to the extent required by applicable law and
the applicable stock exchange rules and regulations.  This Agreement and each
agreement to be executed by Parent or Purchaser in connection herewith have been
duly and validly executed and delivered by Parent and Purchaser and, assuming
the due authorization, execution and delivery hereof and thereof by each other
party hereto and thereto, constitute valid and binding agreements of Parent and
Purchaser, enforceable against Parent and Purchaser in accordance with their
terms except that (i) the enforceability hereof and thereof may be subject to
bankruptcy, insolvency, reorganization, moratorium or other similar laws now or
hereafter in effect relating to creditors' rights generally and (ii) 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.

     Section 5.3.  Governmental Authorization.  The execution, delivery and
performance by Parent and Purchaser of this Agreement, and each agreement to be
executed by Parent or Purchaser pursuant hereto, and the consummation by Parent
and Purchaser of the transactions contemplated hereby and thereby, require no
action by or in respect of, or filing with, any Governmental Entity, other than:

     (a)  the filing of the Articles of Merger in accordance with the TBCA;

     (b)  compliance with any applicable requirements of the HSR Act and (if
applicable) similar provisions of the laws of Canada, Mexico and Chile;

     (c)  compliance with any applicable requirements of the Exchange Act;

     (d)  compliance with any applicable requirements of the Securities Act;

     (e)  compliance with any applicable foreign or state securities or "blue
sky" laws, rules or regulations; and

     (f)  such other filings or registrations with, or authorizations, consents
or approvals of, Governmental Entities, the failure of which to make or obtain
(i) would not reasonably be expected to have a Material Adverse Effect on Parent
or Purchaser or (ii) would not materially and adversely affect the ability of
Parent or Purchaser to consummate the transactions contemplated hereby and
operate their respective businesses as heretofore operated.

                                      26
<PAGE>

     Section 5.4.  Non-Contravention.  The execution, delivery and performance
by Parent and Purchaser of this Agreement, and each agreement to be executed by
Parent or Purchaser in connection herewith, and the consummation by Parent and
Purchaser of the transactions contemplated hereby and thereby, do not and will
not:

     (a)  contravene or conflict with any provision of the respective charters
or bylaws (or similar governing documents) of Parent or any of its subsidiaries
except where such breach would not have a Material Adverse Effect on Parent;

     (b)  assuming compliance with the matters referred to in Section 5.3 and
assuming the requisite approval of Parent's shareholders of the transactions
contemplated by this Agreement, contravene or conflict with or constitute a
violation of any provision of any law, regulation, judgment, injunction, order
or decree binding upon or applicable to Parent or any of its subsidiaries or any
of their respective properties or assets, except where such contravention,
conflict or violation  would not have a Material Adverse Effect on Parent;

     (c)  conflict with or result in a material breach or violation of, or
constitute a default under, or result in any third party having any right of
termination, amendment, acceleration or cancellation of, or loss of a material
benefit under, (i) any material agreement, contract or other instrument binding
upon Parent or any Parent Subsidiary or (ii) assuming compliance with the
matters referred to in Section 5.3, any material license, franchise, permit or
other similar authorization held by Parent or any Parent Subsidiary, in each
case except where such conflict, breach, violation, default or result would not
have a Material Adverse Effect on Parent; or

     (d)  result in the creation or imposition of any Lien that could have a
Material Adverse Effect on Parent.

     Section 5.5.  Organization of Purchaser.  The authorized capital stock of
Purchaser consists of 1,000 shares of common stock, par value $.01 per share,
all of which are outstanding.  All the issued and outstanding capital stock of
Purchaser is owned by Parent. Purchaser has not conducted any business prior to
the date hereof and has no assets, liabilities or obligations of any nature
other than those incident to its formation and pursuant to this Agreement.

     Section 5.6.  Disclosure Documents.  None of the information supplied or to
be supplied by Parent for inclusion in the Offer Documents, the Schedule 14D-9
or the Proxy Statement (if applicable) will, either at the time of mailing
thereof to shareholders of the Company or at the time of the meeting of such
shareholders to be held in connection with the transactions contemplated hereby,
contain any untrue statement of a material fact or omit to state any material
fact necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading.  The Offer Documents
will comply as to form in all material respects with the provisions of the
Exchange Act, except that no representation or warranty is made by Parent with
respect to information supplied by the Company for inclusion therein.

     Section 5.7.  Litigation.  There is no action, suit, proceeding, claim or
investigation pending, or to the knowledge of Parent, threatened against or
affecting Parent or any of its subsidiaries or any of their assets which would
reasonably be expected to have a Material Adverse Effect on Parent.  To the
knowledge of Parent, there are no, and have not been any, facts, conditions or
incidents that are reasonably likely to result in any such action, suit,

                                      27
<PAGE>

proceeding, claim or investigation, except for actions, suits, proceedings,
claims or investigations that would not, individually or in the aggregate, have
a Material Adverse Effect on Parent.  Neither Parent nor any of its subsidiaries
is subject to or in default with respect to any writ, order, judgment,
injunction or decree that has or that, individually or in the aggregate, would
have a Material Adverse Effect on Parent.

     Section 5.8.  Finders' Fees.  Except for Deutsche Banc Securities Inc.,
there is no investment banker, broker, finder or other intermediary that has
been retained by or is authorized to act on behalf of Parent who is entitled to
any fee or commission in connection with the transactions contemplated by this
Agreement.

     Section 5.9.  Financial Capability.  As of the date hereof, Parent has
sufficient financial resources available to it through its ultimate parent or
other of its affiliates to consummate the transactions contemplated by this
Agreement.  None of Parent's or Purchaser's obligations pursuant to this
Agreement are subject to Parent's or Purchaser's obtaining or securing any
financing or credit support for the transactions contemplated hereby.


                                  ARTICLE VI.

                            COVENANTS OF THE COMPANY

     From the date hereof until the occurrence of the earlier of (i) the
Effective Time or (ii) termination of this Agreement, the Company agrees that:

     Section 6.1.  Conduct of Business of the Company Pending the Effective
Time.  Except as expressly permitted or contemplated by this Agreement, or by
the Company Disclosure Schedule, the Company shall, and shall use its
commercially reasonable best efforts to cause each of the Company Subsidiaries
to, conduct their operations in the ordinary and usual course of business
consistent with past practice and use its commercially reasonable best efforts
to preserve intact their respective business organizations' goodwill, keep
available the services of their respective present officers and key employees,
and preserve the goodwill and business relationships with customers, suppliers
and others having business relationships with them to the end that it is
intended that the goodwill and ongoing businesses of the Company and any Company
Subsidiary shall be materially unimpaired at the Effective Time.  Without
limiting the generality of the foregoing, and except as otherwise permitted by
this Section 6.1 and Section 8.2 or the other terms of this Agreement, prior to
the Effective Time, without the consent of Parent, which consent shall not be
unreasonably withheld or delayed as to matters other than those referred to in
clause (p) below, the Company will not, and will cause each of the Company
Subsidiaries not to:

     (a)  amend or propose to amend their respective organizational documents;
or split, combine or reclassify their outstanding capital stock or declare, set
aside or pay any dividend or distribution in respect of any capital stock or
issue or authorize or propose the issuance of any other securities in respect
of, in lieu of or in substitution for shares of its capital stock, except for
dividends and distributions paid by Company Subsidiaries to other Company
Subsidiaries or to the Company;

     (b)  (i) issue, sell, pledge or dispose of, or agree to, authorize or
propose the issuance, sale, pledge or disposition of, any additional shares of,
or any options, warrants or rights of any kind to acquire any shares of, their
capital stock of any class, any debt or equity securities

                                      28
<PAGE>

convertible into or exchangeable for such capital stock or any other equity
related right (including any phantom stock or SAR rights), other than any such
issuance pursuant to options, warrants, rights, agreements or convertible
securities outstanding as of the date hereof in accordance with their terms;
(ii) redeem, purchase, acquire or offer to purchase or acquire any (x) shares of
its capital stock of (y) long-term debt other than as required by governing
instruments relating thereto; or (iii) enter into any contract, agreement,
commitment or arrangement with respect to any of the foregoing;

     (c)  enter into or amend any employment, severance, special pay arrangement
with respect to termination of employment or other arrangements or agreements
with any directors, officers or key employees except for (i) normal or budgeted
salary increases, merit bonuses and annual bonuses, (ii) arrangements in
connection with employee transfers, (iii) agreements with new employees, in the
case of (i), (ii), or (iii), in the ordinary course of business consistent with
past practice or (iv) agreements to pay bonuses to key employees for the purpose
of retaining such employees through the Effective Date;

     (d)  (i) adopt, enter into or amend any, or become obligated under any new
bonus, profit sharing, compensation, stock option, pension, retirement, deferred
compensation, health care, employment or other employee benefit plan, agreement,
trust, fund or arrangement for the benefit or welfare of any employee or
retiree, except in the ordinary course of business consistent with past practice
or as required to comply with changes in applicable law occurring after the date
hereof or (ii) except for normal increases in the ordinary course of business
consistent with past practice that, in the aggregate, do not result in a
material increase in benefits or compensation expense to the Company, increase
the compensation or fringe benefits of any director, officer or employee in any
manner, or pay any benefit that, in any such case, is not required by any plan
and arrangement as in effect prior to the date hereof;

     (e)  make any commitment or enter into any material contract or agreement
(including any agreement relating to the hiring of an individual as an employee
or consultant) providing for expenditures by the Company in excess of $100,000,
except in the ordinary course of business consistent with past practice;

     (f)  alter through merger, liquidation, reorganization, restructuring or in
any other fashion the corporate structure or ownership of the Company or any
Company Subsidiary;

     (g)  except as may be required as a result of a change in law or in
generally accepted accounting principles, change any of the accounting
principles or practices used by it;

     (h)  revalue any of its assets, including, without limitation, writing down
the value of its inventory or writing off notes or accounts receivable, other
than in the ordinary course of business;

     (i)  make any material tax election or settle or compromise any material
income tax liability;

     (j)  pay, or agree to pay, in excess of $100,000 in connection with the
settlement or compromise of any pending or threatened suit, action or claim;

                                      29
<PAGE>

     (k)  pay, discharge or satisfy any claim, liability or obligation
(absolute, accrued, asserted or unasserted, contingent or otherwise) in excess
of $100,000 other than the payment, discharge or satisfaction in the ordinary
course of business of liabilities reflected or reserved against in, or
contemplated by, the financial statements (or the notes thereto) as of May 31,
1999 of the Company incurred in the ordinary course of business consistent with
past practice;

     (l)  waive, redeem, amend or allow to lapse any material term or condition
of any confidentiality or "standstill" agreement to which the Company or any
Company Subsidiary is a party;

     (m)   (i) incur or assume any long-term or short-term indebtedness for
borrowed money ("debt") or issue any debt securities except for borrowings under
existing lines of credit in the ordinary course of business; (ii) assume,
guarantee, endorse or otherwise become liable or responsible (whether directly,
contingently or otherwise) for the obligations of any other person except in the
ordinary course of business consistent with past practice and in amounts not
material to the Company or any of its Subsidiaries; (iii) make any loans,
advances or capital contributions to, or, except for immaterial investments in
the ordinary course of business consistent with past practice, investments in,
any other person (other than to wholly owned Subsidiaries of the Company or the
Company, with respect to its Subsidiaries, or customary loans or advances to
employees in the ordinary course of business consistent with past practice and
in amounts not material to the maker of such loan or advance); (iv) pledge or
otherwise encumber shares of capital stock of the Company or its Subsidiaries;
or (v) mortgage or pledge any of its assets, tangible or intangible, or create
or suffer to exist any Lien thereupon except in the ordinary course of business
consistent with past practice;

     (n)   (i) sell, lease or dispose of any assets outside the ordinary course
of business or any assets which in the aggregate are material to the Company or
any of its Subsidiaries; or (ii) enter into any similar material commitment or
transaction outside the ordinary course of business;

     (o)   (i) except as set forth in the Company Disclosure Schedule or
otherwise disclosed by the Company in writing to Parent on or prior to the date
hereof, acquire (by merger, consolidation, or acquisition of stock or assets)
any corporation, partnership or other business organization or division thereof
or any equity interest therein, or any assets, for consideration in excess of
$1,000,000 individually or in the aggregate; and (ii) authorize any capital
expenditure or expenditures which, in the aggregate, are in excess of the
amounts therefor set forth in the Company 1999 capital expenditures budget
delivered to Parent prior to the date hereof; or

     (p)  take or agree to take any of the foregoing actions or any action that
is reasonably likely to result in any of its representations and warranties set
forth in this Agreement becoming untrue or incorrect.

     Section 6.2.  Access to Financial and Operational Information.  Subject to
compliance with applicable law, upon reasonable notice, the Company will, and
will use its commercially reasonable best efforts to cause each of the Company
Subsidiaries to, give Parent, its directors, its counsel, financial advisors,
auditors and other authorized representatives reasonable access during normal
business hours to the offices, properties, books and records of the Company and
the Company Subsidiaries; will furnish to Parent, its counsel, financial
advisors, auditors and other authorized representatives such financial and
operating data with respect to the Company

                                      30
<PAGE>

and the Company Subsidiaries as such persons may reasonably request; and will
instruct and request the Company's directors, officers, employees, counsel and
financial advisors to cooperate with Parent in its investigation of the business
of the Company and the Company Subsidiaries and in the planning for the
combination of the businesses of the Company and Parent following the
consummation of the Merger. All information obtained pursuant to this Section
shall be governed by the Confidentiality Agreement dated September 9, 1999
between Parent and the Company (the "Confidentiality Agreement").



                                 ARTICLE VII.

                              COVENANTS OF PARENT

     Section 7.1.  Conduct of Business of Parent Pending the Effective Time.
From the date hereof until the occurrence of the earlier of (i) the Effective
Time or (ii) termination of this Agreement, Parent agrees that prior to the
Effective Time, without the consent of the Company, which consent shall not be
unreasonably withheld as to matters other than those referred to in clause (b)
below, Parent will not, and will cause each of its subsidiaries not to, take or
agree to take any action that is reasonably likely to result (a) in any of its
representations and warranties set forth in this Agreement becoming untrue or
(b) in any of the conditions to the Merger set forth in Article IX not being
satisfied.

                                 ARTICLE VIII.

                      COVENANTS OF PARENT AND THE COMPANY

     From the date hereof until the occurrence of the earlier of (i) the
Effective Time or (ii) termination of this Agreement, the Company and Parent
agree that:

     Section 8.1.  Agreement to Cooperate; Further Assurances.  Subject to the
terms and conditions of the Agreement, each of the Company and Parent shall use
its commercially reasonable best efforts promptly to take, or cause to be taken
all action and to do, or cause to be done, all things necessary, proper or
advisable under applicable laws and regulations to consummate and make effective
the transactions contemplated by this Agreement, subject to the requisite vote
of shareholders of the Company (if required), including providing information
and using its commercially reasonable best efforts to obtain promptly all
necessary or appropriate waivers, consents and approvals, and to effect promptly
all necessary registrations and filings (including filings under the HSR Act and
similar provisions of the laws of Canada or Mexico).  Parent shall pay all costs
and expenses, including, without limitation, all filing fees and counsel fees,
incurred in connection with obtaining regulatory approvals under the HSR Act and
similar provisions of the laws of Canada or Mexico.

     Section 8.2.  No Solicitation.

     (a)  From the date hereof until the termination of this Agreement and
except as expressly permitted by the following provisions of this Section 8.2,
the Company will not, and will instruct (or where it has such power cause) each
of its Subsidiaries and each officer, director or employee of or any investment
banker, attorney, accountant or other advisor or representative of, the Company
or any of its Subsidiaries not to, directly or indirectly, (i) solicit or
initiate the submission of any Acquisition Proposal (as defined in Section
8.2(c)) or of any inquiries or proposals that constitute, or may reasonably be
expected to lead to, any Acquisition Proposal, (ii) participate in any
discussions or negotiations regarding, or furnish to any person any non-

                                      31
<PAGE>

public information with respect to the Company or any of its Subsidiaries to
facilitate, the submission of any Acquisition Proposal or the making of any
inquiries or proposals that constitute, or may reasonably be expected to lead
to, any Acquisition Proposal, (iii) amend or grant any waiver or release under
any standstill or similar agreement with respect to any class of equity
securities of the Company, or (iv) agree to, approve or recommend any
Acquisition Proposal or enter into any agreement with respect to any Acquisition
Proposal (other than a confidentiality agreement as described below); provided,
however, that the Company may nevertheless take or permit any action otherwise
prohibited by clause (ii), (iii) or (iv) of this sentence in respect of any
Acquisition Proposal (A) that the Company Board determines in good faith, after
consultation with one or both of the Company Financial Advisors or any other
independent, nationally recognized financial advisor, would, if accepted,
constitute, or be reasonably likely to lead to, a Superior Proposal (as
hereinafter defined), if (B) prior to taking such action, the Company: (1)
provides reasonable notice to Parent to the effect that it is taking such
action; (2) has received from such person an executed confidentiality/standstill
agreement in reasonably customary form and in any event containing terms at
least as stringent as those contained in the Confidentiality Agreement (as
defined in Section 6.2) as of the date of its execution (it being understood
that such person shall not be released from the standstill obligations set forth
therein solely due to the existence of this Agreement or any modification of
this Agreement proposed by Parent); and (3) in the case of (x) any action to
waive or release any obligation under any such confidentiality/standstill
agreement not to purchase or offer to purchase Company Securities or (y) any
action to agree to, approve or recommend any Acquisition Proposal or to enter
into any agreement with respect to any Acquisition Proposal (other than a
confidentiality/standstill agreement), the Company Board has (I) received a
written Superior Proposal, (II) has notified Parent in writing (a "Notice") that
it intends to authorize such action (it being understood that the Company shall
be required to deliver a new Notice in respect of any revised Superior
Proposal), attaching the most recent version (or draft) of such Superior
Proposal to such Notice (which version (or draft) shall be updated on a
reasonably current basis), (III) during the five (5) business day (or, in the
case of any Notice with respect to a particular third party other than the
initial Notice with respect to such third party's Acquisition Proposal, two (2)
business day) period after delivery of the Notice the Company, in addition to
any negotiations with the third party, has exercised its best efforts to
negotiate with, and shall have caused its respective financial and legal
advisors to exercise their best efforts to negotiate with, Parent to attempt to
make such adjustments in the terms and conditions of this Agreement, the Offer
and the Merger as would enable the Company Board to determine in good faith that
there is no longer a Superior Proposal as compared to the terms and conditions
of this Agreement, the Offer and the Merger after considering the results of
such negotiations, and (IV) the Company Board concludes after considering the
results of such negotiations, that the Superior Proposal giving rise to the
Company's Notice continues to be a Superior Proposal. For purposes of this
Agreement, "Superior Proposal" means a written Acquisition Proposal on terms
that the Company Board determines in its good faith judgment (after consultation
with one or both of the Company Financial Advisors or any other independent,
nationally recognized financial advisor) would, if accepted, be more favorable
from a financial point of view to the Company's shareholders than the Offer and
the Merger. The Company shall notify Parent of any Acquisition Proposal
(including, without limitation, the material terms and conditions thereof and
the identity of the person making it) as promptly as reasonably practicable
after its receipt thereof, and shall thereafter inform Parent on a reasonably
prompt basis of the status of any discussions or negotiations with such a third
party, and any material changes to the terms and conditions of such Acquisition
Proposal. Immediately after the execution and delivery of this Agreement, the

                                      32
<PAGE>

Company will, and will instruct (or where it has such power cause) its
Subsidiaries and its and their respective officers, directors, employees,
investment bankers, attorneys, accountants and other agents to, cease and
terminate any existing activities, discussions or negotiations with any parties
conducted heretofore with respect to any possible Acquisition Proposal.

     (b)  The Company Board will not withdraw or modify, in a manner adverse to
Parent, its approval or recommendation of this Agreement, the Offer or the
Merger unless (i) a Superior Proposal is pending at the time the Company Board
determines to take any such action, and (ii) the Company Board determines in
good faith to approve or recommend such Superior Proposal (and in connection
therewith, to withdraw or modify its approval or recommendation of this
Agreement, the Offer or the Merger).

     (c)  "Acquisition Proposal" means an inquiry, offer or proposal regarding
any of the following (other than the transactions contemplated by this
Agreement) involving the Company or any of its Subsidiaries: (i) any merger,
consolidation, share exchange, recapitalization, business combination or other
similar transaction; (ii) any sale, lease, exchange, mortgage, pledge, transfer
or other disposition of all or substantially all the assets of the Company or
any of its Subsidiaries, taken as a whole, in a single transaction or series of
related transactions; (iii) any tender offer or exchange offer for 20 percent or
more of the outstanding shares of Company Common Stock or the filing of a
registration statement under the Securities Act in connection therewith; or (iv)
any public announcement of a proposal, plan or intention to do any of the
foregoing or any agreement to engage in any of the foregoing.

     Section 8.3.  Shareholder Approval.

     (a)  To the extent shareholder approval of the Merger and this Agreement is
required by law, the Company will take all action necessary in accordance with
the TBCA and the Company's Articles of Incorporation and By-laws to convene a
meeting of the holders of Company Common Stock (the "Company Shareholders'
Meeting") as promptly as practicable following the consummation of the Offer to
consider and vote upon the Merger and this Agreement.

     (b)  The Proxy Statement prepared by the Company in connection with the
obtaining of shareholder approval, if so required, shall include the
recommendation of the Company Board, subject to its fiduciary duties under Texas
law, to the holders of Company Common Stock that the holders of Company Common
Stock vote in favor of the adoption of this Agreement and the Merger.

     (c)  The Company Board shall, subject to its fiduciary duties under Texas
law and to the extent shareholder approval is so required, (i) cause the Company
to use its commercially reasonable efforts (through its agents or otherwise) to
solicit from the holders of the Company Common Stock proxies in favor of the
Merger and this Agreement and (ii) cause the Company to take all other lawful
action reasonably necessary to secure shareholder approval of the Merger and
this Agreement.

     (d)  Notwithstanding the foregoing, if Purchaser shall acquire in the Offer
a number of shares of Company Common Stock that, together with any shares
beneficially owned by Parent and its affiliates, represents at least 90% of the
outstanding Company Common Stock, no solicitation of proxies shall be undertaken
and the parties shall instead take all necessary and

                                      33
<PAGE>

appropriate action to cause the Merger to become effective as soon as
practicable after the expiration of the Offer without a meeting of shareholders
in accordance with Article 5.16 of the TBCA.

     (e)  To the extent solicitation of shareholder approval of the Merger and
this Agreement is required by applicable law:  (i) the Company shall prepare a
preliminary Proxy Statement relating to the Company Shareholders' Meeting and a
form of proxy for use in connection with the Company Shareholders' Meeting; (ii)
the Company shall cause the  preliminary Proxy Statement to be filed with the
SEC at the earliest practicable date following the consummation of the Offer;
(iii) Parent and the Company shall cooperate with each other in the preparation
of the Proxy Statement, and the Company shall notify Parent of the receipt of
any comments of the SEC with respect to the preliminary Proxy Statement and of
any requests by the SEC for any amendment or supplement thereto or for
additional information and shall provide to Parent promptly copies of all
correspondence between the Company or any representative of the Company and the
SEC; (iv) as promptly as practicable after comments are received from the SEC
with respect to the preliminary Proxy Statement, the Company shall use its
commercially reasonable efforts to respond to the comments of the SEC and, to
the extent comments of the SEC relate to Parent or Purchaser, Parent and
Purchaser shall use their commercially reasonable efforts to respond to the
comments of the SEC; and (v) the Company shall give Parent and its counsel the
opportunity to review all amendments and supplements to the Proxy Statement and
all responses to requests for additional information and replies to comments of
the SEC prior to their being filed with or sent to the SEC, and Parent and
Purchaser shall provide the Company, on a timely basis with such information
about them as may be required to be included in the Proxy Statement or as may be
reasonably required to respond to any comment of the SEC.

     Section 8.4.  Company Shareholders' Meeting.

     (a)  To the extent solicitation of shareholder approval of the Merger and
this Agreement is required by applicable law, after all the comments received
from the SEC have been cleared by the SEC staff and all information required to
be contained in the Proxy Statement has been included therein by the Company:
(i) the Company shall file with the SEC the definitive Proxy Statement and the
Company shall use its commercially reasonable efforts to have the Proxy
Statement cleared by the SEC as soon thereafter as practicable; and (ii) the
Company shall cause the Proxy Statement to be mailed to record holders of
Company Common Stock as promptly as practicable after clearance by the SEC.

     (b)  Parent and Purchaser agree to cause all shares of Company Common Stock
purchased pursuant to the Offer and all other shares of Company Common Stock
beneficially owned by Parent, Purchaser or any affiliate of Parent, or with
respect to which Parent, Purchaser or any affiliate of Parent otherwise may
exercise voting control, to be voted in favor of the approval and adoption of
the Merger and this Agreement.

     Section 8.5.  Confidential Information.  Except as otherwise contemplated
by this Agreement, the Company and Parent acknowledge that the Confidentiality
Agreement shall remain in full force and effect at all times prior to the
Effective Time and after any termination of this Agreement except as provided in
such Confidentiality Agreement, and reaffirm their agreement to comply with the
terms thereof.

                                      34
<PAGE>

     Section 8.6.  Communications.  Parent and the Company will consult with
each other before issuing, and will provide each other the opportunity to
review, comment upon and concur with, any press release, Form 8-K or other
public statement with respect to the transactions contemplated by this
Agreement, and will not issue any such press release, file any Form 8-K with the
SEC or make any such public statement prior to such consultation, except as may
be required by applicable law, court process or pursuant to applicable exchange
requirements.  The parties agree that the initial press release to be issued
with respect to the transactions contemplated by this Agreement will be in the
form heretofore agreed to by the parties.

     Section 8.7.  Obligations of Purchaser.  Parent will take all action
necessary to cause Purchaser to perform its obligations under this Agreement and
to consummate the Merger on the terms and conditions set forth in this
Agreement.  Purchaser will not issue any shares of its capital stock, any
securities convertible into or exchangeable for its capital stock, or any
option, warrant or other right to acquire its capital stock to any person or
entity other than Parent.

     Section 8.8.  Expenses.   All fees, costs and expenses incurred in
connection with this Agreement and the transactions contemplated hereby (except,
if applicable, for the Fees and Expenses, reimbursement contemplated by Section
10.4) shall be paid by the party incurring such expenses.

     Section 8.9.  Indemnification and Insurance.  After the Effective Time, the
Surviving Corporation and the Parent shall indemnify and hold harmless each
present and former director and officer of the Company and the Company
Subsidiaries (the "Indemnified Parties") as provided in their respective
charters and bylaws and as otherwise provided or permitted pursuant to any
agreement or arrangement in effect at the date hereof (to the extent consistent
with applicable law), and with respect to indemnification for acts and omissions
occurring at or prior to the Effective Time, which rights to be indemnified and
held harmless shall survive the Merger and shall continue in full force and
effect for a period of six years from the Effective Time; provided, that, in the
event any claim or claims (a "Claim or Claims") are asserted or made within such
six-year period, all rights to indemnification in respect of any such Claim or
Claims shall continue until disposition of any and all such Claim or Claims.
The Surviving Corporation and Parent shall maintain or cause to be maintained in
effect for not less than six years from the Effective Time the current policies
of the directors' and officers' liability insurance maintained by the Company
(provided that the Surviving Corporation and the Parent may substitute therefor
policies of at least the same coverage containing terms and conditions that are
not less advantageous so long as no lapse in coverage occurs as a result of such
substitution) with respect to all matters, including the transactions
contemplated hereby, occurring prior to, and including, the Effective Time;
provided that, in the event that any Claim or Claims are asserted or made within
such six-year period, such insurance shall be continued in respect of any such
Claim or Claims until final disposition of any and all such Claim or Claims.
The provisions of this Section are for the benefit of, and may be enforced by,
each Indemnified Party, his or her heirs and his or her representatives.

     Section 8.10.  Retention and Severance Arrangements.  From and after the
Effective Time, the Surviving Corporation will honor all existing written
retention and severance arrangements adopted by the Company or any of the
Company Subsidiaries for the benefit of any current or former officer, director
or employee of the Company or any of the Company

                                      35
<PAGE>

Subsidiaries. The provisions of this Section are for the benefit of, and may be
enforced by, each person covered by such arrangements, his or her heirs and his
or her representatives.


                                  ARTICLE IX.

                            CONDITIONS OF THE MERGER

     Section 9.1.  Conditions to Obligations of Each Party.  The respective
obligations of the Company, on the one hand, and Parent and Purchaser, on the
other hand, to consummate the Merger are subject to the satisfaction or waiver,
at or prior to the Effective Time, of each of the following conditions:

     (a)  The Company's shareholders shall have duly approved this Agreement and
the transactions contemplated hereby if and to the extent required by the TBCA
and other applicable law.

     (b)  No statute, rule, regulation, executive order, decree, injunction or
restraining order shall have been enacted, promulgated or enforced (and not
repealed, superseded or otherwise made inapplicable) by any court or
Governmental Entity, which prohibits the consummation of the transactions
contemplated by this Agreement (each party agreeing to use all commercially
reasonable best efforts to have any such order, decree or injunction lifted).


                                  ARTICLE X.

                            TERMINATION OF AGREEMENT

     Section 10.1.  Termination.  This Agreement may be terminated at any time
prior to the Effective Time whether before or after the approval by the
shareholders of the Company:

     (a)  by mutual consent of the Boards of Directors of Parent and the
Company;

     (b)  by Parent or the Company, on or after the date when any of the
following shall have occurred ("Termination Date"):  (i) the consummation of the
Offer shall not have occurred on or before January 31, 2000 (or March 31, 2000
if the only condition remaining unfulfilled at January 31, 2000 is approval by
any required Governmental Entity, and Parent and the Company are continuing to
seek to obtain such approval); (ii) any Governmental Entity, the consent of
which is a condition to the obligations of Parent and the Company to consummate
the Offer or the Merger, shall have determined not to grant its consent, and all
appeals of such determination shall have been taken and have been unsuccessful;
or (iii) any court of competent jurisdiction shall have issued an order,
judgment or decree (other than a temporary restraining order) restraining,
enjoining or otherwise prohibiting the Offer or the Merger and such order,
judgment or decree shall have become final and nonappealable; provided however,
that the right to terminate this Agreement pursuant to this Section 10.1(a)
shall not be available to any party whose failure to fulfill any obligation
under this Agreement has been the cause of, or resulted in, the failure of the
consummation of the Offer to occur on or before such date;

     (c)  by the Company, if Parent or Purchaser shall have failed to commence
the Offer as provided in Section 1.1 hereof;

     (d)  by Parent, if (i) there has been a breach by the Company of any
representation or warranty set forth in this Agreement (without giving effect to
any materiality or Material

                                      36
<PAGE>

Adverse Effect limitations contained in such representations or warranties),
which has not been cured within ten business days following receipt by the
Company of written notice of such breach and which breach, individually or in
the aggregate together with all other breaches not so cured, would result in a
Material Adverse Effect; (ii) there has been a material breach by the Company of
any covenant or agreement set forth in this Agreement, which breach has not been
cured within ten business days following receipt by the Company of written
notice of such breach; (iii) the Offer is terminated or expires in accordance
with its terms as a result of the failure of any of the conditions to the Offer
without Purchaser having purchased any shares of Company Common Stock pursuant
to the Offer; provided, however, that the right to terminate pursuant to this
clause (iii) is not available if Parent's or Purchaser's failure to perform any
of its covenants or agreements under this Agreement results in the failure of
such condition; or (iv) the Company Board, whether or not permitted by this
Agreement, shall have withdrawn or modified in a manner adverse to Parent its
approval or recommendation of the transactions contemplated by this Agreement or
recommended an Acquisition Proposal; provided, however, that the right to
terminate this Agreement pursuant to this Section 10.1(d)(i) or (ii) shall not
be available to Parent if it, at such time, is in material breach of any
representation, warranty, covenant or agreement set forth in this Agreement; or

     (e)  by the Company, if (i) there has been a breach by Parent of any
representation or warranty set forth in this Agreement (without giving effect to
any materiality or Material Adverse Effect limitations contained in such
representations or warranties), which has not been cured within ten (10)
business days following receipt by Parent of written notice of such breach and
which breach, individually or in the aggregate together with all other breaches
not so cured, would result in a Material Adverse Effect; (ii) there shall have
been a material breach of any covenant, agreement or obligation of Parent or
Purchaser as provided in Section 1.1 hereof; (iii) there has been a material
breach by Parent of any other covenant or agreement set forth in this Agreement,
which breach is not cured within ten business days following receipt by Parent
of written notice of such breach; or (iv) prior to the consummation of the
Offer, (A) the Company Board shall have determined in good faith that it is in
the best interest of the Company's shareholders for the Company to terminate
this Agreement and to enter into an agreement with a third party with respect to
or to consummate a Superior Proposal, (B) the Company Board shall have
authorized the Company, subject to complying with the terms of this Agreement,
to enter into a binding written agreement with a third party concerning a
Superior Proposal and the Company notifies Parent in writing (the "Termination
Notice", which may, if applicable also be a Notice pursuant to Section 8.2(a))
that it intends to enter into such an agreement (it being understood that the
Company shall be required to deliver a new Termination Notice in respect of any
revised Superior Proposal from such third party or its affiliates that the
Company proposes to accept), attaching the most current version (or draft) of
such agreement to such Termination Notice (which version (or draft) shall be
updated on a reasonably current basis), (C) during the five (5) business day
(or, in the case of any Termination Notice with respect to a particular third
party other than the initial Termination Notice with respect to such third
party's Acquisition Proposal, two (2) business day) period after delivery of the
Termination Notice, the Company in addition to any negotiations with the third
party, shall have used its best efforts to negotiate with, and shall have caused
its respective financial and legal advisors to use their best efforts to
negotiate with, Parent to attempt to make such adjustments in the terms and
conditions of this Agreement, the Offer and the Merger in the terms and
conditions of the Superior Proposal, as would enable the Company Board to
determine in good faith that there is no longer a Superior Proposal as compared
to the terms and conditions of this Agreement, the Offer and the Merger

                                      37
<PAGE>

after considering the results of such negotiations; and (D) the Company Board
shall have concluded, after considering the results of such negotiations, that
any Superior Proposal giving rise to the Company's Termination Notice continues
to be a Superior Proposal; provided, however, that the right to terminate this
Agreement pursuant to this Section 10.1(e)(i), (ii) or (iii) shall not be
available to the Company if it, at such time, is in material breach of any
representation, warranty, covenant or agreement set forth in this Agreement; and
provided, further, however, that the Company may not effect any termination
pursuant to Section 10.1(e)(iv) unless (x) prior thereto or concurrently
therewith the Company pays to Parent in immediately available funds the Fee
required to be paid pursuant to Section 10.4(a) and (y) such termination is
within two (2) business days after the termination of the five (5) (or, if
applicable, two (2)) business day period referred to in clause (C) above.

     Section 10.2.  [Reserved]

     Section 10.3.  Effect of Termination.  In the event of termination of this
Agreement by either Parent or the Company as provided in Section 10.1 hereof,
this Agreement shall forthwith become void (except as set forth in the last
sentence of Section 6.2 (confidentiality) and in Sections 8.5 (confidentiality),
8.6 (communication), 8.8 (expenses), 10.4 (termination fee, if applicable) and
Article XI, and there shall be no liability on the part of Parent, Purchaser or
the Company or their respective officers or directors, except for any breach of
a party's covenants or obligations under such provisions.  Notwithstanding the
foregoing, no party hereto shall be relieved from liability for any willful or
intentional breach of this Agreement.

     Section 10.4.  Termination Fee.

     (a)  Notwithstanding any other provision of this Agreement, in the event
that this Agreement is terminated by the Company pursuant to Section 10.1(e)(iv)
or by Parent pursuant to Section 10.1(d)(iv), then the Company shall pay Parent
in same-day funds a termination fee of $7.5 million (the "Fee"), on the date of
such termination.

     (b)  Notwithstanding any other provision of this Agreement, in the event
that this Agreement is terminated by Parent pursuant to Section 10.1(d)(i), then
the Company shall reimburse Parent's and Purchaser's fees and out-of-pocket
costs and expenses incurred in connection with this Agreement and the
transactions contemplated hereby ("Expenses"), not to exceed $1.5 million in the
aggregate, promptly upon receipt of requests for such reimbursement accompanied
by invoices or other reasonable evidence of payment of such fees and out-of-
pocket costs and expenses by Parent or Purchaser ("Expense Evidence"), and if
within twelve (12) months after such termination a Company Acquisition (as
hereinafter defined) occurs or the Company enters into an agreement to effect or
publicly announces a plan or proposal to effect a Company Acquisition and at any
time thereafter such Company Acquisition occurs, then the Company shall
immediately pay Parent the Fee less the actual amount of Expenses previously
paid pursuant to this Section 10.4(b).  A "Company Acquisition" means the
occurrence of any of the following events:  (i) the acquisition by a third party
of fifty percent (50%) or more of the assets of the Company and its
Subsidiaries, taken as a whole; (ii) the acquisition by a third party of fifty
percent (50%) or more of the outstanding shares of Company Common Stock or any
securities convertible into or exchangeable for shares of Company Common Stock
that would constitute fifty percent (50%) or more of the outstanding shares of
Company Common Stock upon such conversion or exchange, or any combination of the
foregoing; (iii) the acquisition by

                                      38
<PAGE>

the Company of the assets or stock of a third party if, as a result of which,
the outstanding shares of Company Common Stock immediately prior thereto are
increased by one hundred percent (100%) or more, or (iv) the merger,
consolidation or business combination of the Company with or into a third party,
where, following such merger, consolidation or business combination, the
shareholders of the Company immediately prior to such transaction do not hold,
immediately after such transaction, securities of the surviving entity
constituting more than fifty percent (50%) of the total voting power of the
surviving entity.

     (c)  Notwithstanding any other provisions of this Agreement, in the event
that this Agreement is terminated by Parent pursuant to Section 10.1(d)(iii) due
to the condition set forth in paragraph 2(i) of Annex A not having been
satisfied after an Acquisition Proposal shall have been commenced or publicly
announced and either (i) that third party's Acquisition Proposal results in that
party consummating a Company Acquisition, or (ii) within twelve (12) months
after such termination, the Company enters into an agreement to effect or
publicly announces a plan or proposal to effect a Company Acquisition that has a
value per share of Company Common Stock at the time of the agreement or
announcement that is greater than the Offer Consideration, then the Company
shall immediately pay Parent the Fee.

     (d)  For avoidance of doubt, under no circumstances will the Fee or
Expenses be payable by the Company more than once (if at all).  Any Fee and
Expenses paid hereunder will reduce any amounts otherwise payable by the Company
to Parent or Purchaser hereunder, including by reason of any breach of this
Agreement or any representation, warranty, covenant or agreement herein or
hereunder.

                                  ARTICLE XI.

                                 MISCELLANEOUS

     Section 11.1.  Further Assurances.  Each party agrees to cooperate fully
with the other parties and to execute such further instruments, documents and
agreements and to give such further written assurances as may be reasonably
requested by any other party to better evidence and reflect the transactions
described herein and contemplated hereby and to carry into effect the intents
and purposes of this Agreement.  The covenants and agreements contained in this
Agreement shall survive the Effective Time and, if the Agreement is terminated,
the provisions of Section 10.3 shall apply.

     Section 11.2.  Survival.  None of the representations and warranties in
this Agreement shall survive the termination of this Agreement or the Effective
Time; provided, however, the termination of this Agreement shall not relieve any
party hereto from any liability for any willful or intentional breach of this
Agreement.

     Section 11.3.  Notices.  Whenever any party hereto desires or is required
to give any notice, demand, or request with respect to this Agreement, each such
communication shall be in writing and shall be effective only if it is delivered
by personal service or mailed, United States registered or certified mail,
postage prepaid, or sent by prepaid overnight courier or confirmed telecopier,
addressed as follows:

                                      39
<PAGE>

     (a)  if to Parent or Purchaser, to:

               Hagemeyer P.P.S. North America, Inc.
               100 Galleria Parkway, Suite 1120
               Atlanta, Georgia 30339
               Attention:  Mr. David G. Gundling
               Telecopy:  770-541-6645

               with a copy (which shall not constitute notice) to:

               Hagemeyer N.V.
               Rijksweg 69
               P.O. Box 5111
               1410 AC Naarden
               The Netherlands
               Attention:  Ivo Manders, Esq.
               Telecopy:  31-35-695-7687

               and

               Altman, Kritzer & Levick, P.C.
               6400 Powers Ferry Road, N.W., Suite 224
               Atlanta, Georgia 30339
               Attention  Allen D. Altman, Esq.
               Telecopy:  770-303-1130

               and

               Powell, Goldstein, Frazer & Murphy LLP
               191 Peachtree Street, Suite 1600
               Atlanta, Georgia 30303
               Attention:  Gabriel Dumitrescu, Esq.
               Telecopy:  404-572-6999

     (b)  if to the Company, to:

               Vallen Corporation
               13333 Northwest Freeway
               Houston, Texas  77040
               Attention:  Chief Executive Officer
               Telecopy:  713-462-7634

                                      40
<PAGE>

               with a copy (which shall not constitute notice) to:

               Mayor, Day, Caldwell & Keeton, L.L.P.
               700 Louisiana, Suite 1900
               Houston, Texas  77002-2778
               Attention:  John B. Clutterbuck
               Telecopy:  713-225-7047

Such communications shall be effective when they are received by the addressee
thereof.  Any party may change its address for such communications by giving
notice thereof to the other parties in conformity with this Section 11.3.


     SECTION 11.4.  GOVERNING LAWS AND CONSENT TO JURISDICTION.  THE LAWS OF THE
STATE OF TEXAS (IRRESPECTIVE OF ITS CHOICE OF LAW PRINCIPLES) SHALL GOVERN ALL
ISSUES CONCERNING THE VALIDITY OF THIS AGREEMENT, THE CONSTRUCTION OF ITS TERMS,
AND THE INTERPRETATION AND ENFORCEMENT OF THE RIGHTS AND DUTIES OF THE PARTIES.
EACH OF THE PARTIES HEREOF IRREVOCABLY SUBMITS TO THE EXCLUSIVE JURISDICTION OF
THE COURTS OF THE STATE OF TEXAS AND THE FEDERAL COURTS OF THE UNITED STATES OF
AMERICA LOCATED IN HOUSTON, TEXAS (AND THE TEXAS STATE AND FEDERAL COURTS HAVING
JURISDICTION OVER APPEALS THEREFROM) IN RESPECT OF THIS AGREEMENT, THE OTHER
AGREEMENTS AND DOCUMENTS REFERRED TO HEREIN AND THE TRANSACTIONS CONTEMPLATED BY
THIS AGREEMENT AND SUCH OTHER DOCUMENTS AND AGREEMENTS.

     Section 11.5.  Binding Upon Successors and Assigns; Assignment.  This
Agreement and the provisions hereof shall be binding upon each of the parties,
their permitted successors and assigns.  This Agreement may not be assigned by
any party without the prior consent of each other.

     Section 11.6.  Severability.  If any provision of this Agreement, or the
application thereof, shall for any reason or to any extent be invalid or
unenforceable, the remainder of this Agreement and application of such provision
to other persons or circumstances shall continue in full force and effect and in
no way be affected, impaired or invalidated.

     Section 11.7.  Entire Agreement; Third Party Beneficiaries.  This
Agreement, including the Company Disclosure Schedule, the Parent Disclosure
Schedule and Annex A hereto, together with the Confidentiality Agreement and the
other agreements and instruments referenced herein, (a) constitutes the entire
understanding, and agreement of the parties with respect to the subject matter
hereof and supersedes all prior and contemporaneous agreements or
understandings, inducements or conditions, express or implied, written or oral,
between the parties with respect hereto and (b) is not intended to confer upon
any person other than the parties any rights or remedies hereunder other than in
Sections 8.9 and 8.10, which are intended to be for the benefit of the persons
covered thereby and may be enforced by such persons.

     Section 11.8.  Other Remedies.  Except as otherwise provided herein, any
and all remedies herein expressly conferred upon a party shall be deemed
cumulative with and not exclusive of any other remedy conferred hereby or by law
on such party, and the exercise of any one remedy shall not preclude the
exercise of any other.

     Section 11.9.  Amendment and Waivers.  Any term or provision of this
Agreement may be amended, and the observance of any term of this Agreement may
be waived (either generally

                                      41
<PAGE>

or in a particular instance and either retroactively or prospectively) only by a
writing signed by the party to be bound thereby. The waiver by a party of any
breach hereof or default in the performance hereof shall not be deemed to
constitute a waiver of any other default or any succeeding breach or default,
unless such waiver so expressly states. At any time before or after approval of
this Agreement and the Merger by the shareholders of the Company and prior to
the Effective Time, this Agreement may be amended or supplemented by the parties
hereto with respect to any of the terms contained in this Agreement, except that
following approval by the shareholders of the Company there shall be no
amendment or change to the provisions hereof with respect to the Merger
Consideration without further approval by the shareholders of the Company, and
no other amendment shall be made which by law requires further approval by such
shareholders without such further approval.

     Section 11.10.  Disclosure Schedules.  Each of the Parent Disclosure
Schedule and the Company Disclosure Schedule is an integral part of this
Agreement and all statements disclosed on any part of any such schedule shall be
deemed to be disclosed in all parts of such schedule and not only in connection
with the specific representation with respect to which such statements are
explicitly referenced.

     Section 11.11.  No Waiver.  The failure of any party to enforce any of the
provisions hereof shall not be construed to be a waiver of the right of such
party thereafter to enforce such provisions.

     Section 11.12.  Construction of Agreement.  A reference to an Article,
Section or Annex shall mean an Article of, Section in, or Annex to, this
Agreement unless otherwise explicitly set forth.  The titles and headings herein
are for reference purposes only and shall not in any manner limit the
construction of this Agreement which shall be considered as a whole.  The words
"include," "includes" or similar phrases when used herein shall be deemed in
each case to be followed by the words "without limitation."  The term
"consummation of the Offer" or similar phrase when used herein means the first
purchase of Company Common Stock pursuant to the Offer.

     Section 11.13.  Counterparts.  This Agreement may be executed in any number
of counterparts, each of which shall be an original as against any party whose
signature appears thereon and all of which together shall constitute one and the
same instrument.  This Agreement shall become binding when one or more
counterparts hereof, individually or taken together, shall bear the signatures
of all the parties reflected hereon as signatories.

                            (signature page follows)

                                      42
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first above written.

                              HAGEMEYER P.P.S. NORTH AMERICA, INC.



                              By:
                                 ------------------------------------------
                                    David G. Gundling
                                    President and Chief Executive Officer


                              SHIELD ACQUISITION CORP.



                              By:
                                 -----------------------------------------
                                    David G. Gundling
                                    President and Chief Executive Officer



                              VALLEN CORPORATION



                              By:
                                 -----------------------------------------
                                    Leonard J. Bruce
                                    Chairman of the Board


                                      43
<PAGE>

                                    ANNEX A

                            CONDITIONS OF THE OFFER

    1.  Defined Terms.  Unless otherwise defined in this Annex A, capitalized
terms that appear in this Annex A have the meanings provided in the Agreement
and Plan of Merger of which this Annex A is an integral part.

    2.  Offer Conditions.  Notwithstanding any other provision of the Offer,
Purchaser shall not be required to accept for payment or, subject to any
applicable rules and regulations of the SEC, including Rule 14e-l(c) under the
Exchange Act (relating to Purchaser's obligation to pay for or return tendered
shares of Company Common Stock promptly after expiration or termination of the
Offer), to pay for any shares of Company Common Stock tendered, and may postpone
the acceptance for payment or, subject to the restriction referred to above,
payment for any shares of Company Common Stock tendered, and (subject to Section
1.1(b) of the Agreement, as defined below) may amend or terminate the Offer
(whether or not any shares of Company Common Stock have theretofore been
purchased or paid for) if:

     (i) there have not been validly tendered and not withdrawn prior to the
time the Offer shall otherwise expire a number of shares of Company Common Stock
which, together with any shares of Company Common Stock beneficially owned by
Parent and its affiliates, constitutes at least two thirds of the shares of
Company Common Stock outstanding on a fully diluted basis; or

     (ii) any applicable waiting periods under the HSR Act (or similar
provisions of the laws of Canada or Mexico) applicable to the transactions
contemplated by the Agreement shall not have expired or been terminated prior to
the expiration of the Offer; or

     (iii)  at any time on or after the date of the Agreement and before
acceptance for payment of such shares of Company Common Stock any of the
following events shall occur and be continuing:

          (A) any U.S. or foreign governmental entity or any foreign, Federal,
     state or local court of competent jurisdiction shall have enacted, issued,
     promulgated, enforced or entered any statute, rule, regulation, executive
     order, decree, injunction or other order (other than the application to the
     Offer and the Merger of applicable waiting periods under the HSR Act (or
     similar provisions of the laws of Canada or Mexico) which is in effect and
     which (1) prevents or prohibits consummation of the Offer or the Merger,
     (2) prohibits or limits the ownership or operation by the Company, Parent
     or any of their affiliates or Subsidiaries of all or any material portion
     of the business or assets of the Company or any of its Subsidiaries, (3)
     imposes material limitations on the ability of Parent, Purchaser or any
     other Subsidiary of Parent to hold or to exercise effectively full rights
     of ownership of the shares of Company Common Stock, including, without
     limitation, the right to vote the shares of Company Common Stock, acquired
     by Purchaser pursuant to the Offer or otherwise on all matters properly
     presented to the Company's shareholders, including, without limitation, the
     approval and adoption of the Agreement and the transactions contemplated
     thereby, (4) requires divestiture by Parent, Purchaser or any other
     affiliate of Parent of the shares of Company Common Stock, or (5) requires
     Parent, the Company or any of their respective affiliates to enter into a
     divestiture, hold-separate, business limitation or similar agreement or
     undertaking, except

                                      A-1
<PAGE>

     in the case of clauses (2), (3), (4) and (5) for any prohibition,
     limitation or requirement which would not, individually or in the aggregate
     materially and adversely affect the economic or business benefits to Parent
     and its affiliates of the transactions contemplated by the Agreement or the
     ability of Parent or the Surviving Corporation to conduct its business
     substantially in the manner such business is being conducted as of the date
     of the Agreement; or

          (B) the representations and warranties of the Company contained in the
     Agreement (without giving effect to any materiality or Material Adverse
     Effect limitations contained therein) shall fail to be true and correct
     when made and as of the date of the consummation of the Offer as though
     made on and as of such date (except for representations and warranties made
     as of a specified date, which shall be true and correct as of such date)
     and the failure of such representations and warranties to be so true and
     correct, individually or in the aggregate, has or would result in a
     Material Adverse Effect on the Company; or

          (C) the Company shall not have performed or complied in all material
     respects with its obligations, agreements or covenants under the Agreement
     to be performed or complied with by it; or

          (D) the Agreement shall have been terminated in accordance with its
     terms; or

          (E) except as to matters disclosed in the Company SEC Reports filed
     prior to the date of the Agreement, there shall have occurred a material
     adverse change in the financial condition or results of operations of the
     Company and its Subsidiaries taken as a whole; or

          (F) there shall have occurred (1) any general suspension of, or
     limitation on prices for, trading in securities on any national securities
     exchange or the over-the counter market in the United States (other than
     shortening of trading hours or any coordinated trading halt triggered
     solely as a result of a specified increase or decrease in a market index)
     for a continuous period of five (5) days, (2) a declaration of a banking
     moratorium or any suspension of payments in respect of banks in the United
     States, (3) any material limitation (whether or not mandatory) by any U.S.
     or foreign governmental entity on the extension of credit by banks or other
     lending institutions in the United States, (4) a commencement of a war or
     armed hostilities or other national calamity directly involving the United
     States, Canada or Mexico and Parent shall have determined that there is a
     reasonable likelihood that such event would have a material adverse
     significance to Parent and its Subsidiaries, or the Company and its
     Subsidiaries, all taken as a whole, or (5) in the case of any of the
     foregoing existing at the time of the execution of the Agreement, a
     material acceleration or worsening thereof;

and, in the reasonable judgment of Purchaser in any such case, and regardless of
the circumstances (including any action or inaction by Parent or Purchaser other
than any action or inaction by Parent or Purchaser constituting a breach of the
Agreement) giving rise to any condition, such condition makes it inadvisable to
proceed with such acceptances for payment or such payments.

                                      A-2
<PAGE>

                          COMPANY DISCLOSURE SCHEDULE



                                      C-1
<PAGE>

                           PARENT DISCLOSURE SCHEDULE
                           --------------------------



                                      P-1


<PAGE>

                                   GUARANTEE

     As an inducement to Vallen Corporation, a Texas corporation (the
"Company"), to enter into, and consummate the transactions contemplated by, the
Agreement and Plan of Merger, dated as of November 14, 1999 (the "Merger
Agreement"), by and among the Company, HAGEMEYER P.P.S. NORTH AMERICA, INC., a
Texas corporation ("Parent"), and SHIELD ACQUISITION CORP., a Texas corporation
("Purchaser"), HAGEMEYER N.V., a corporation organized under the laws of the
Netherlands ("Hagemeyer"), hereby unconditionally, absolutely and irrevocably
guarantees to the Company and any third party beneficiaries under the Merger
Agreement (to the extent of their third party beneficiary rights thereunder) the
full and punctual payment and performance of all covenants, agreements,
obligations and liabilities of Parent, Purchaser and the Surviving Corporation
(as defined in the Merger Agreement) contained in the Merger Agreement or in
connection with the Offer, the Merger (as both are defined in the Merger
Agreement) and the other transactions contemplated by the Merger Agreement.
This is a guarantee of payment and performance and not collectibility.
Hagemeyer is the primary obligor under this Guarantee. Hagemeyer hereby waives
diligence, presentment, demand of performance, filing of any claim, any right to
require any proceeding for and against Parent, Purchaser or the Surviving
Corporation, protest, notice and all demands whatsoever in connection with the
performance of its obligations herein.

     Hagemeyer hereby represents and warrants that:

     (a) Hagemeyer is a corporation duly incorporated, validly existing and in
good standing under the laws of the Netherlands and has all corporate power and
authority to carry on its business as now being conducted and is duly qualified
to do business and is in good standing in each jurisdiction in which the nature
of its business or the ownership or leasing of its properties makes such
qualification necessary other than in such jurisdictions where the failure to be
so qualified would not, individually or in the aggregate, reasonably be expected
to have a Material Adverse Effect (as defined in the Merger Agreement) on
Hagemeyer or a material adverse effect on the ability of Hagemeyer to perform
its obligations hereunder or consummate the transactions contemplated hereby.

     (b) Hagemeyer has the requisite corporate power and authority to enter into
this Guarantee.  The execution and delivery of this Guarantee by Hagemeyer has
been duly authorized by the Supervisory Board of Hagemeyer, and no other
corporate proceedings on the part of Hagemeyer is necessary to authorize this
Guarantee or the performance by Hagemeyer of its obligations hereunder.

     (c) This Guarantee has been duly executed and delivered by Hagemeyer and
constitutes a valid and binding obligation of Hagemeyer, enforceable against
Hagemeyer in accordance with its terms.

     (d) The execution and delivery of the Guarantee by Hagemeyer do not and the
performance of its obligations hereunder and compliance with the provisions
hereof will not (x) violate any of the provisions of the certificate or articles
of incorporation or by-laws (or similar
<PAGE>

documents) of Hagemeyer or any of its subsidiaries (as defined in the Merger
Agreement), in each case as amended to the date of this Guarantee, (y) subject
to the governmental filings and other matters referred to in Section 5.4 of the
Merger Agreement, violate, result in a breach of or default (with or without
notice or lapse of time, or both) under, or give rise to a material obligation,
a right of termination, cancellation or acceleration of any obligation or loss
of a material benefit under, or require the consent of any person under, any
indenture, or other agreement, permit, concession, franchise, license or other
instrument or undertaking to which Hagemeyer or any of its subsidiaries is a
party or by which Hagemeyer or any of its subsidiaries or any of their
respective assets is bound or affected, or (z) subject to the governmental
filings and other matters referred to in Section 5.4, violate any law, rule or
regulation applicable to Hagemeyer, or any order, writ, judgment, injunction,
decree, determination or award applicable to Hagemeyer currently in effect,
which, in the case of clauses (y) and (z) above, would reasonably be expected to
have, individually or in the aggregate, a Material Adverse Effect on Hagemeyer
or its ability to perform under the Guarantee.

     (e) No consent, approval, order or authorization of, or declaration,
registration or filing with, or notice to, any Governmental Entity (as defined
in the Merger Agreement) which has not been received or made is required by or
with respect to Hagemeyer or any of its subsidiaries in connection with the
execution and delivery of this Guarantee by Hagemeyer or the performance by
Hagemeyer of its obligations hereunder, except for the governmental filings and
other matters referred to in Section 5.4 of the Merger Agreement.

     Hagemeyer agrees to perform the covenants set forth in Section 8.1 of the
Merger Agreement as if it were a party thereto.  Hagemeyer agrees that it shall
cooperate with Parent and Purchaser to fulfill their obligations under the HSR
Act (as defined in the Merger Agreement) with respect to the transactions
contemplated by the Merger Agreement.

     Hagemeyer agrees, in its capacity as sole shareholder of Parent, to cause
Parent in its capacity as sole shareholder of Purchaser to approve and adopt the
Merger, the Merger Agreement and the transactions contemplated thereby.

     This Guarantee shall be governed by, and construed in accordance with, the
laws of the State of Texas, without reference to its conflict of laws
provisions, and the Hagemeyer hereby (i) submits to the exclusive jurisdiction
of the state civil district court in and for Harris County in the State of Texas
(or, if such court lacks subject matter jurisdiction, any appropriate state or
federal court in Harris County in the State of Texas), for purposes of any
action arising from, relating to, or growing out of this Guarantee, (ii) agrees
that it shall not attempt to deny or defeat such jurisdiction by motion or other
request for leave from any such court, and (iii) agrees that it shall not bring
any such action other than in the state civil district court in and for Harris
County in the State of Texas (or if such court lacks subject matter
jurisdiction, any appropriate state or federal court in Harris County of the
State of Texas).  Hagemeyer acknowledges that service or delivery to CT
Corporation in Houston, Texas, whom Hagemeyer hereby appoints as its agent for
service of process and agrees to engage, shall constitute good and sufficient
service.  Such appointment by Hagemeyer shall be solely for the purposes set
forth in this Guarantee and shall not be deemed an appointment for any other
purpose.  Hagemeyer's agreement to be subject to service of process as provided
above shall be effective only for the purpose of the Company's

                                       2
<PAGE>

enforcement of this agreement and no third party beneficiary rights shall arise
to any third party beneficiary for it to seek to use this agreement as
Hagemeyer's admission for any other matter that Hagemeyer is doing business in
Texas or that Hagemeyer is subject to service of process in Texas for any other
purpose. Nothing herein shall be construed to require Hagemeyer to maintain any
assets in the United States.

     IN WITNESS WHEREOF, Hagemeyer has executed and delivered this Guarantee as
of the _____ day of __________, 1999.

                                 HAGEMEYER N.V.


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



                                 In the presence of:

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

                                       3

<PAGE>

             THE TRANSFER OF THIS AGREEMENT IS SUBJECT TO CERTAIN
         RESTRICTIONS CONTAINED HEREIN AND TO RESALE RESTRICTIONS UNDER
                     THE SECURITIES ACT OF 1933, AS AMENDED

                                OPTION AGREEMENT

     OPTION AGREEMENT, dated as of November 14, 1999 (the "Agreement"), among
HAGEMEYER P.P.S. NORTH AMERICA, INC., a Delaware corporation ("Parent"), SHIELD
ACQUISITION CORP., a Texas corporation and a direct wholly owned subsidiary of
Parent ("Purchaser"), and VALLEN CORPORATION, a Texas corporation (the
"Company"). Capitalized terms used and not defined in this Agreement shall have
the meaning ascribed to them in the Agreement and Plan of Merger, dated as of
the date hereof (the "Merger Agreement"), by and among Parent, Purchaser and the
Company.

     WHEREAS, concurrently with the execution of this Agreement, Parent,
Purchaser and the Company are entering into the Merger Agreement, providing for
the making of a tender offer (as defined in the Merger Agreement, the "Offer")
to purchase all of the issued and outstanding shares of the common stock, par
value $.50 per share, of the Company (as defined in the Merger Agreement, the
"Company Common Stock") at a price per share equal to the Offer Consideration
(as defined in the Merger Agreement) and, following the completion of the Offer,
the merger (as defined in the Merger Agreement, the "Merger") of Purchaser and
the Company, whereby each share of Company Common Stock not purchased pursuant
to the Offer (other than shares owned by Parent, Purchaser or any other wholly
owned subsidiary of Parent, shares held in the treasury of the Company and
Dissenting Shares (as defined in the Merger Agreement)) will be converted into
the right to receive in cash an amount equal to the Offer Consideration in
accordance with the terms of the Merger Agreement; and

     WHEREAS, the Company desires to induce Parent and Purchaser to enter into
the Merger Agreement and, therefore, has agreed to grant to Purchaser the Short
Form Merger Option (as defined in Section 1).

     NOW, THEREFORE, in consideration of the foregoing and the respective
representations, warranties, covenants and agreements set forth in this
Agreement, the parties hereto hereby agree as follows:

     1. Grant of Short Form Merger Option.  The Company hereby grants to
Purchaser an irrevocable option (the "Short Form Merger Option") to purchase up
to that number of newly issued shares of Common Stock (the "Short Form Merger
Option Shares") equal to the number of shares that, when added to the number of
shares owned by Purchaser and its affiliates immediately following Purchaser's
purchase of all shares of Company Common Stock purchasable pursuant to the Offer
(including under any extension of the Offer), shall constitute 90% of the shares
of Common Stock then outstanding on a fully diluted basis (giving effect to the
issuance of the Short Form Merger Option Shares) for a cash consideration per
Short Form Merger Option Share equal to the Offer Consideration; provided,
however, that in no event shall the number of Short Form Merger Option Shares
for which the Short Form Merger Option is exercisable exceed 10% of the issued
and outstanding shares of Company Common Stock.
<PAGE>

     2. Exercise of the Short Form Merger Option.

          (a)  Exercise.  The Short Form Merger Option may be exercised by
     Purchaser at any time during the two business days following, and will
     become exercisable upon, the date of acceptance for payment by Purchaser of
     all shares of Common Stock purchasable pursuant to the Offer (including
     under any extension of the Offer) in accordance with the terms of the
     Merger Agreement.  In the event Purchaser wishes to exercise the Option,
     Purchaser shall give written notice of its exercise of the Short Form
     Merger Option, specifying the number of shares of Common Stock owned by
     Purchaser and its affiliates immediately following completion of the Offer
     and a place and a time (which shall not be less than three business days
     from the date of such notice) for the closing of such purchase.  The
     Company shall, within two business days after receipt of such notice,
     deliver written notice to Purchaser specifying the number of Short Form
     Merger Option Shares.

          (b)  Payment and Delivery of Certificates Upon Exercise.  At the
     closing under this Section 2:  (i) the Company will deliver to Purchaser a
     certificate or certificates representing the number of Short Form Merger
     Option Shares so purchased and (ii) Purchaser will make payment to the
     Company of the aggregate price for the Short Form Merger Option Shares
     being purchased by wire transfer in an amount equal to the product of (x)
     the Offer Consideration and (y) the total number of Short Form Merger
     Option Shares delivered at such closing.  The Company shall pay all Company
     expenses, and any and all United States Federal, state and local taxes and
     other charges, that may be payable by the Company in connection with the
     preparation, issuance and delivery of stock certificates under this
     Section 2.

     3. Termination.  This Agreement shall terminate upon the first to occur of
(i) the termination of the Merger Agreement, (ii) the Effective Time of the
Merger (as defined in the Merger Agreement) and (iii) the failure of Purchaser
to exercise the Short Form Merger Agreement during the period in which it is
exercisable as set forth in Section 2(a).

     4.  Waiver and Amendment.  Any provision of this Agreement may be waived at
any time by the party that is entitled to the benefits of such provision. 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.
The failure of any party to this Agreement to assert any of its rights under
this Agreement or otherwise shall not constitute a waiver of such rights.  No
single or partial exercise of any right, remedy, power or privilege hereunder
shall preclude any other or further exercise thereof or the exercise of any
other right, remedy, power or privilege.  Any waiver shall be effective only in
the specific instance and for the specific purpose for which given and shall not
constitute a waiver to any subsequent or other exercise of any right, remedy,
power or privilege hereunder.

     5.  Entire Agreement; No Third-Party Beneficiaries;  Severability.  This
Agreement, together with the Merger Agreement and the other documents and
instruments referred to herein and therein, between Parent, Purchaser and the
Company (i) constitutes the entire agreement and supersedes all prior agreements
and understandings, both written and oral, between the parties with respect to
the subject matter hereof and (ii) is not intended to confer upon any person
other

                                       2
<PAGE>

than the parties hereto (or their respective successors and assigns) any rights,
remedies, obligations or liabilities hereunder. If any term, provision, covenant
or restriction of this Agreement is held by a court of competent jurisdiction to
be invalid, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions of this Agreement shall remain in full force and
effect and shall in no way be affected, impaired or invalidated. If for any
reason such court determines that the Option does not permit Purchaser to
acquire the full number of shares of Common Stock as provided in Section 2 (as
may be adjusted herein), it is the express intention of the Company to allow
Purchaser to acquire or to acquire such lesser number of shares as may be
permissible without any amendment or modification hereof.

     6.  Assignment.  Neither this Agreement nor any of the rights, interests or
obligations hereunder shall be assigned by any of the parties hereto (whether by
operation of law or otherwise) without the prior written consent of the other
parties, except that Purchaser may assign, in its sole discretion, any or all of
its rights, interests and obligations hereunder to Parent.  Subject to the
preceding sentence, this Agreement will be binding upon, inure to the benefit of
and be enforceable by the parties and their respective successors and permitted
assigns.

     7.  Notices.  All notices and other communications hereunder shall be in
writing and shall be deemed to have been duly given (and shall be deemed to have
been duly received if so given) if personally delivered or sent by registered or
certified mail, postage prepaid, or telecopy addressed to the respective parties
at their addresses specified in the Merger Agreement.

     8.  Specific Performance.  Each of the parties hereto acknowledges and
agrees that in the event of any breach by the Company of this Agreement, Parent
and Purchaser would be irreparably and immediately harmed and could not be made
whole by monetary damages.  It is accordingly agreed that the Company will
waive, in any action for specific performance, the defense of adequacy of a
remedy at law, and Parent and Purchaser shall be entitled, in addition to any
other remedy to which they may be entitled at law or in equity, to compel
specific performance of this Agreement in any action instituted in a court of
competent jurisdiction.

     9.  Governing Law.  This Agreement shall be governed by and construed in
accordance with the laws of the State of Texas, without regard to the conflict
of laws provisions thereof.

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

                                       3
<PAGE>

     IN WITNESS WHEREOF, this Agreement has been executed by duly authorized
officers of each of the parties hereto all as of the date first above written.

                              HAGEMEYER P.P.S. NORTH AMERICA, INC.


                              By:
                                 --------------------------------------
                                  Name:  David G. Gundling
                                  Title:  President and Chief Executive Officer


                              SHIELD ACQUISITION CORP.


                              By:
                                 --------------------------------------
                                  Name:  David G. Gundling
                                  Title:  President and Chief Executive Officer


                              VALLEN CORPORATION


                              By:
                                 --------------------------------------
                                  Leonard J. Bruce
                                  Chairman of the Board

                                       4

<PAGE>

                            SHAREHOLDERS' AGREEMENT

          SHAREHOLDERS' AGREEMENT, dated as of November 14, 1999 ("Agreement"),
is made and entered into by and among HAGEMEYER P.P.S. NORTH AMERICA, INC., a
Delaware corporation ("Parent"); SHIELD ACQUISITION CORP., a wholly owned
subsidiary of Parent and a Texas corporation ("Purchaser"); and Leonard J.
Bruce, an individual residing in the State of Texas, Bruce Partners, Ltd., a
Texas limited partnership, and Bruce Interests Partnership, a Texas general
partnership (each a "Shareholder," and collectively, the "Shareholders").

                                  WITNESSETH:

     WHEREAS, on the date hereof, Parent, Purchaser, and Vallen Corporation, a
Texas corporation (the "Company"), entered into an Agreement and Plan of Merger
(as such agreement may hereafter be amended, restated or renewed from time to
time, the "Merger Agreement"), pursuant to which Purchaser will commence the
Offer (capitalized terms used and not otherwise defined herein having the
respective meanings ascribed to them in the Merger Agreement);

     WHEREAS, each Shareholder is the Beneficial Owner (as defined below) and
has the sole right to vote and dispose of his or its respective shares of the
Company Common Stock listed on Schedule I attached hereto ("Shareholder's
Shares"); and

     WHEREAS, as an inducement and a condition to their entering into the Merger
Agreement and incurring the obligations set forth therein, Parent and Purchaser
have required that the Shareholders enter into this Agreement.

     NOW, THEREFORE, in consideration of the foregoing and the representations,
warranties, covenants and agreements contained herein and in the Merger
Agreement, the parties hereto, intending to be legally bound, hereby agree as
follows:

      1.  DEFINITIONS.  For purposes of this Agreement:

          (a) "Affiliate" means, with respect to any specified Person, any
Person that directly, or indirectly through one or more intermediaries,
controls, or is controlled by, or is under common control with, the Person
specified.

          (b) "Beneficially Own" or "Beneficial Owner" 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 Securities Exchange
Act of 1934, as amended (the "Exchange Act")), including pursuant to any
agreement, 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
Persons with whom such Person would constitute a "group" within the meaning of
Section 13(d)(3) of the Exchange Act.
<PAGE>

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

          (d) "Representative" means, with respect to any Person, as applicable,
such Person's officers, managing general partner, directors, employees, agents
and representatives (including any investment banker, financial advisor, agent,
representative or expert retained by or acting on behalf of such Person or its
subsidiaries).

          (e) "Termination Event" shall mean the first to occur of: (i) purchase
of the Shareholders' Shares pursuant to the Offer; (ii) the Effective Time;
(iii) the termination of the Merger Agreement by any party thereto in accordance
with its terms; (iv) Purchaser's failure to commence the Offer within five (5)
business days following the date of the initial public announcement of the
execution of the Merger Agreement; (v) the termination or expiration of the
Offer without Purchaser's having accepted for payment and paid for all shares of
Company Common Stock tendered pursuant thereto, provided that each Shareholder's
right to terminate pursuant to this clause (vi) shall not be available to the
Shareholder if such Shareholder is then in material breach of this Agreement and
such breach has been the proximate cause of the Offer having so expired or
having been so terminated; (vii) any modification of any term or condition of
the Offer as to which prior written consent of the Company is required pursuant
to Section 1.1(b) of the Merger Agreement in the form executed and delivered as
of the date hereof (whether or not such consent is obtained); and (viii) the
applicable date set forth in Section 10.1(b) of the Merger Agreement.

     2.   AGREEMENT TO TENDER; VOTING OF THE SHARES.

          (a) During the period commencing on the date hereof and until a
Termination Event, each Shareholder, severally, hereby agrees that such
Shareholder shall: (i) validly tender and sell (and not withdraw), pursuant to
and in accordance with the terms of the Offer, not later than the fifth business
day after the receipt by the Shareholder of the offer to purchase, transmittal
letter and other relevant Offer Documents (or as soon as practicable thereafter
as shall be permitted by the relevant court or governmental authority), such
Shareholder's Shares (as defined in Section 3(a)) and any shares of Company
Common Stock acquired by such Shareholder after the date hereof and prior to a
Termination Event, whether upon exercise of options, warrants or rights, the
conversion or exchange of convertible or exchangeable securities, or by means of
purchase, dividend, distribution or otherwise); (ii) at any meeting of the
Company's shareholders (whether annual or special, and whether or not an
adjourned or postponed meeting), however called, or in connection with any
written consent of the Company's shareholders, vote (or cause to be voted) all
of such Shareholder's Shares: (x) in favor of the Merger, the execution and
delivery by the Company of the Merger Agreement and the approval and adoption of
the Merger and the terms thereof and each of the other actions contemplated by
the Merger Agreement and this Agreement and any actions required in furtherance
thereof and hereof; (y) 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; and (z) except as otherwise
agreed to in writing in advance by Parent and Purchaser, against the following
actions (other than the Merger and the transactions contemplated by the Merger
Agreement and this Agreement): (A) any extraordinary

                                       2
<PAGE>

corporate transaction, such as a merger, consolidation or other business
combination, involving the Company or any of its subsidiaries; (B) any sale,
lease or transfer of a material amount of the assets or business of the Company
or its subsidiaries, or any reorganization, restructuring, recapitalization,
special dividend, dissolution, liquidation or winding up of the Company or its
subsidiaries; (C) any change in the present capitalization of the Company,
including any proposal to sell any equity interest in the Company or any of its
subsidiaries or any amendment of the Articles of Incorporation or By-laws of the
Company; (D) any change in directors constituting a majority of the Company's
Board of Directors; (E) any other action that would impede, interfere with,
delay, postpone, discourage or adversely affect the Offer, the Merger, or the
transactions contemplated by the Merger Agreement; and (iii) such Shareholder
shall not enter into any agreement with any Person the effect of which would be
inconsistent with or violative of the provisions and agreement contained in this
Section 2(a).

          (b) Each Shareholder hereby acknowledges that Purchaser's obligation
to accept for payment shares of the Company Common Stock purchased pursuant to
the Offer, including the Shares, is subject to the terms and conditions of the
Offer.  Upon the terms and subject to the conditions of the Offer, Parent shall
cause Purchaser to accept for payment and pay for all shares of Company Common
Stock (including each Shareholder's Shares) validly tendered and not withdrawn
pursuant to the Offer as soon as Purchaser is permitted to do so under
applicable law.

          (c) Each Shareholder shall permit Purchaser to publish and to disclose
in the Offer Documents and, if shareholder approval is required under applicable
law, the Proxy Statement, if any (including all documents and schedules filed
with the SEC), such Shareholder's identity and ownership of the Company Common
Stock and each Shareholder's commitments, arrangements and understandings under
this Agreement.  Parent and Purchaser shall permit the Shareholders to disclose
the terms of this Agreement in each Shareholder's Schedule 13D, as applicable,
with respect to the Shareholder's Shares.

     3.  REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDER.  Each Shareholder,
severally, hereby represents and warrants to Parent and Purchaser as follows:

          (a) Ownership of Shares.  Such Shareholder is the Beneficial Owner of
the number of shares of Company Common Stock Beneficially Owned by such
Shareholder on the date hereof set forth opposite such Shareholder's name on
Schedule I attached hereto under the heading "Shareholder's Shares."  Such
Shareholder has sole power to issue instructions with respect to the matters set
forth in Section 2 hereof, sole power of disposition, sole power to demand
appraisal rights and sole power to agree to all of the matters set forth in this
Agreement, in each case with respect to such Shareholder's Shares with no
material limitations, qualifications or restrictions on such rights, subject to
applicable securities laws and the terms of this Agreement.  Except for such
Shareholder's Shares, such Shareholder is not the Beneficial Owner of any shares
of Company Common Stock.

          (b) No Conflicts. (i) Except for filings under the Exchange Act or the
HSR Act, no filing with, and no permit, authorization, consent or approval of,
any United States state or federal public body or authority is necessary for the
execution of this Agreement by such

                                       3
<PAGE>

Shareholder and the consummation by such Shareholder of the transactions
contemplated hereby, except where the failure to obtain such consent, permit,
authorization, approval or filing would not interfere with such Shareholder's
ability to perform its obligations hereunder, and (ii) none of the execution and
delivery of this Agreement by such Shareholder, the consummation by such
Shareholder of the transactions contemplated hereby or compliance by such
Shareholder with any of the provisions hereof shall (x) 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 Shareholder is a party or by which such
Shareholder or any of such Shareholder's properties or assets may be bound, or
(y) violate any order, writ, injunction, decree, judgment, order, statute, rule
or regulation applicable to such Shareholder or any of such Shareholder's
properties or assets, in each such case except to the extent that any conflict,
breach, default or violation would not interfere with the ability of such
Shareholder to perform its obligations hereunder.

          (c) Execution, Delivery and Performance.  This Agreement constitutes
the valid and binding obligation of such Shareholder and is enforceable in
accordance with its terms, except as enforceability may be subject to
bankruptcy, insolvency, reorganization, moratorium or other similar laws
relating to or affecting creditors' rights generally and general principles of
equity.  The execution, delivery and performance of this Agreement will not
violate any other agreement to which such Shareholder is a party, including,
without limitation, any voting agreement, partnership agreement, other
shareholders agreement or voting trust.  As to the Shareholder who is a natural
person, such Shareholder hereby represents that such Shareholder (i) has the
full power and capacity necessary to enter into and perform his obligations
under this Agreement, and (ii) has read all provisions of this Agreement, has
reviewed such provisions with counsel to the extent such Shareholder deemed
appropriate, understands each of such provisions and voluntarily agrees to be
bound thereby.  As to the Shareholder that is a partnership, such Shareholder
hereby represents that such partnership is duly formed, validly existing and in
good standing under the laws of the state of its organization with full
partnership power and authority necessary to enter into this Agreement and to
perform its obligations hereunder.

          (d) No Encumbrances.  Such Shareholder's Shares are held by such
Shareholder, or by a nominee or custodian for the benefit of such Shareholder,
free and clear of all liens, claims, security interests, proxies, voting trusts
or agreements, understandings or arrangements or any other encumbrances
whatsoever, except this Agreement and applicable securities laws.

          (e) Reliance.  Such Shareholder understands and acknowledges that
Parent and Purchaser are entering into the Merger Agreement, and are incurring
the obligations set forth therein, in reliance upon such Shareholder's execution
and delivery of this Agreement.

     4.  REPRESENTATIONS OF PARENT AND PURCHASER.  Parent and Purchaser, jointly
and severally, hereby represent and warrant to the Shareholders as follows:

                                       4
<PAGE>

          (a) Organization, Standing and Corporate Power.  Parent is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and Purchaser is a corporation duly organized, validly
existing and in good standing under the laws of the State of Texas, and each has
adequate corporate power and authority to own its properties and carry on its
business as presently conducted.  Each of Parent and Purchaser has the corporate
power and authority to enter into and perform all of its obligations under this
Agreement and to consummate the transactions contemplated hereby.

          (b) No Conflicts.  (i) Except, for filings under the Exchange Act and
the HSR Act, no filing with, and no permit, authorization, consent or approval
of, any state or federal public body or authority is necessary for the execution
of this Agreement by either Parent or Purchaser and the consummation by Parent
and Purchaser of the transactions contemplated hereby, except where the failure
to obtain such consent, permit, authorization, approval or filing would not
interfere with its ability to perform their respective obligations hereunder,
and (ii) none of the execution and delivery of this Agreement by Parent or
Purchaser, the consummation by Parent or Purchaser of the transactions
contemplated hereby or compliance by Parent and Purchaser with any of the
provisions hereof shall (x) conflict with or result in any breach of any
applicable organizational documents applicable to Parent or Purchaser, (y)
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 or Purchaser is a party or
by which Parent or Purchaser or any of Parent's or Purchaser's properties or
assets may be bound, or (z) violate any order, writ, injunction, decree,
judgment, order, statute, rule or regulation applicable to Parent or Purchaser
or any of Parent's or Purchaser's properties or assets, in each such case except
to the extent that any conflict, breach, default or violation would not
interfere with the ability of Parent or Purchaser to perform their respective
obligations hereunder.

          (c) Execution, Delivery and Performance.  The execution, delivery and
performance of this Agreement and the consummation of the transactions
contemplated hereby have been duly authorized by all necessary corporate action
on the part of Parent and Purchaser.  This Agreement constitutes the valid and
binding obligations of Parent and Purchaser and is enforceable in accordance
with its terms, except as enforceability may be subject to bankruptcy,
insolvency, reorganization, moratorium or other similar laws relating to or
affecting creditors' rights generally and general principles of equity.

     5.   CERTAIN COVENANTS.

          (a) Restriction on Transfer, Proxies and Non-interference.  Prior to
the occurrence of a Termination Event, except as required by this Agreement,
each Shareholder, severally, hereby agrees that such Shareholder shall not
directly or indirectly without the prior written consent of Parent and
Purchaser: (i) offer for sale, sell, transfer, tender, pledge, encumber, assign
or otherwise dispose of, or enter into any contract, option or other arrangement
or understanding with respect to the offer for sale, sale, transfer, tender,
pledge, encumbrance, assignment or other disposition of, any or all of such
Shareholder's Shares, or any interest

                                       5
<PAGE>

therein, (ii) grant any proxies or powers of attorney, deposit any of such
Shareholder's Shares into a voting trust or enter into a voting agreement,
understanding or arrangement with respect to any of such Shareholder's Shares,
or (iii) take any action that would make any representation or warranty of such
Shareholder contained in this Agreement untrue or incorrect or result in a
breach by such Shareholder of such Shareholder's obligations under this
Agreement.

          (b) Waiver of Appraisal Rights.  Each Shareholder hereby waives any
rights of appraisal or rights to dissent from the Merger that such Shareholder
may have.

          (c) No Solicitation.  Prior to the occurrence of a Termination Event,
each Shareholder, severally, hereby agrees that such Shareholder will not, and
will instruct such Shareholder's Representatives not to, take any action which,
if taken by the Company, would constitute a violation of Section 8.2(a) of the
Merger Agreement.  Notwithstanding the foregoing, it is expressly stipulated
that any action that may be taken by the Company or the Company Board pursuant
to the proviso of Section 8.2(a) of the Merger Agreement may likewise be taken
by any Shareholder or any Representative of a Shareholder as such.

          (d) Stop Transfer.  Prior to a Termination Event, each Shareholder,
severally, agrees that such Shareholder shall not request that the Company
register the transfer (book-entry or otherwise) of any certificate or
uncertificated interest representing any of such Shareholder's Shares, unless
such transfer is made in compliance with this Agreement.

          (e) HSR Act.  Each Shareholder, severally, agrees that such
Shareholder shall cooperate with the Company to fulfill such Shareholder's
obligations, if any, under the HSR Act with respect to the transactions
contemplated by the Merger Agreement.

          (f) Further Assurances.  From time to time, at the other parties'
reasonable request and without further consideration, each Shareholder, Parent
and Purchaser shall execute and deliver such additional documents as may be
reasonably necessary or desirable to consummate and make effective, in the most
expeditious manner practicable, the tender of each Shareholder's Shares by such
Shareholder as contemplated by Section 2 of this Agreement.

     6.   MISCELLANEOUS.

          (a) Entire Agreement.  This Agreement 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.

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

                                       6
<PAGE>

          (c) Assignment.  Neither this Agreement nor any of the rights,
interests or obligations under this Agreement shall be assigned or delegated, in
whole or in part, by operation of law or otherwise, by any of the parties hereto
without the prior written consent of the other parties, except that Purchaser
may assign its rights and obligations, in whole or in part, to any of its
Affiliates, but no such assignment shall relieve Purchaser of its obligations
hereunder if such assignee does not perform such obligations.  Subject to the
preceding sentence, this Agreement will be binding upon, inure to the benefit
of, and be enforceable by, the parties and their respective successors and
assigns.

          (d) Amendment, Waivers, etc.  This Agreement may not be amended,
changed, supplemented, waived or otherwise modified or terminated, except upon
the execution and delivery of a written agreement executed by the parties
hereto.

          (e) 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, 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, or by
transmission by telecopy, confirmed received.  All communications hereunder
shall be delivered to the respective parties at the following addresses:

               If to Parent or Purchaser:
               Hagemeyer P.P.S. North America, Inc.
               100 Galleria Parkway, Suite 1120
               Atlanta, Georgia 30339
               Attention:  Mr. David G. Gundling
               Telecopy:  770-541-6645

               With a copy (which shall not constitute notice) to:

               Hagemeyer N.V.
               Rijksweg 69
               P.O. Box 5111
               1410 AC Naarden
               The Netherlands
               Attention:  Ivo Manders, Esq.
               Telecopy:  31-35-695-7687

               and

               Altman, Kritzer & Levick, P.C.
               6400 Powers Ferry Road, N.W., Suite 224
               Atlanta, Georgia 30339
               Attention  Allen D. Altman, Esq.
               Telecopy:  770-303-1130

                                       7
<PAGE>

               and

               Powell, Goldstein, Frazer & Murphy LLP
               191 Peachtree Street, Suite 1600
               Atlanta, Georgia 30303
               Attention:  Gabriel Dumitrescu, Esq.
               Telecopy:  404-572-6999

               If to the Shareholders:

               Leonard J. Bruce
               3633 Chevy Chase
               Houston, TX 77019

               With a copy (which shall not constitute notice) to:

               Mayor, Day, Caldwell & Keeton, L.L.P.
               700 Louisiana, Suite 1900
               Houston, Texas  77002-2778
               Attention:  John B. Clutterbuck
               Telecopy:  713-225-7047

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.

          (f) 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.

          (g) Specific Performance.  Each of the parties hereto recognizes and
acknowledges that a breach by it of any covenants or agreements contained in
this Agreement will cause the other party to sustain damages for which it would
not have an adequate remedy at law for money damages, and therefore each of the
parties hereto agrees that in the event of any such breach the aggrieved party
shall be entitled to the remedy of specific performance of such covenants and
agreements and injunctive and other equitable relief in addition to any other
remedy to which it may be entitled, at law or in equity.

          (h) Remedies Cumulative.  All rights, powers and remedies provided
under this Agreement or otherwise available in respect hereof at law or in
equity shall be cumulative

                                       8
<PAGE>

and not alternative, and the exercise of any thereof by any party shall not
preclude the simultaneous or later exercise of any other such right, power or
remedy by such party.

          (i) No Waiver.  The failure of any party hereto to exercise any right,
power or remedy provided under this Agreement or otherwise available in respect
hereof at law or in equity, or to insist upon compliance by any other party
hereto with its obligations hereunder, and any custom or practice of the parties
at variance with the terms hereof, shall not constitute a waiver by such party
of its right to exercise any such or other right, power or remedy or to demand
such compliance.

          (j)  No Third-Party Beneficiaries. This Agreement is not intended to
be for the benefit of, and  shall not be enforceable by, any person or entity
who or which is not a party hereto.

          (k) Governing Law.  This Agreement shall be governed and construed in
accordance with the laws of the State of Texas, without giving effect to the
principles of conflicts of law thereof.

          (1) 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.

          (m) Counterparts.  This Agreement may be executed in counterparts,
each of which shall be deemed to be an original, but all of which, taken
together, shall constitute one and the same Agreement.  This Agreement shall not
be effective as to any party hereto until such time as this Agreement or a
counterpart thereof has been executed and delivered by each party hereto.

          (n) Termination.  This Agreement shall terminate for all purposes, and
shall have no further force and effect, upon the occurrence of any Termination
Event.

                                       9
<PAGE>

     IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed by their duly authorized officers effective as of the date and year
first above written.

                              HAGEMEYER P.P.S. NORTH AMERICA, INC.


                              By:
                                 -------------------------------------
                              Name:  David G. Gundling
                              Title:  President and Chief Executive Officer


                              SHIELD ACQUISITION CORP.


                              By:
                                 -------------------------------------
                              Name:  David G. Gundling
                              Title:  President and Chief Executive Officer


                              SHAREHOLDERS:



                              -------------------------------------
                              Leonard J. Bruce


                              BRUCE PARTNERS, LTD.



                              By:
                                 -------------------------------------
                                 Leonard J. Bruce, its Managing General Partner



                              By:
                                 -------------------------------------
                                 Robert W. Bruce, its General Partner, with
                                 respect to exercising joint power to vote the
                                 Shareholder's Shares as agreed in Section 2(a)

                                       10
<PAGE>

                              BRUCE INTERESTS PARTNERSHIP


                              By:
                                 -------------------------------------
                                 Robert W. Bruce, partner


                              By:
                                 -------------------------------------
                                 Leonard Bruce, Jr.,  partner


                              By:
                                 -------------------------------------
                                 Robin V. Bruce, partner


                              By:
                                 -------------------------------------
                                 Carter M. Bruce, partner


                              By:
                                 -------------------------------------
                                 Christine L. Bruce, partner

                                       11
<PAGE>

                              SCHEDULE I
                              ----------


LEONARD J. BRUCE                                 6,747


BRUCE PARTNERS, LTD.                         3,943,665


BRUCE INTERESTS PARTNERSHIP                    117,000




                                       12

<PAGE>

JOINT NEWS RELEASE

                                    CONTACTS

          VALLEN:                       HAGEMEYER N.V:
          Jim Thompson                  Rob ter Haar
          Leighton Stephenson           31-35-695-7676
          713-462-8700
                                        HAGEMEYER P.P.S. NORTH
                                        AMERICA, INC.:
                                        David G. Gundling
                                        770-541-6151

FOR IMMEDIATE RELEASE

          VALLEN CORPORATION TO BE ACQUIRED THROUGH CASH TENDER OFFER

                                  BY HAGEMEYER

HOUSTON, TEXAS; ATLANTA, GEORGIA:  November 15, 1999 - Vallen Corporation
(NASDAQ:  VALN) and Hagemeyer P.P.S. North America, Inc. today announced the
signing of a definitive agreement for the acquisition of Vallen by Hagemeyer
P.P.S. North America, Inc.  The agreement calls for Hagemeyer P.P.S. North
America, Inc., through a subsidiary, to commence a cash tender offer for all of
the outstanding shares of Vallen within five days at a cash price of $25.00 per
share.  Upon completion of the tender offer, Vallen will become a wholly owned
subsidiary of Hagemeyer P.P.S. North America, Inc. through a cash merger at the
same price per share.  Vallen has approximately 7.4 million shares outstanding
on a fully diluted basis, making the value of the transaction about $201 million
(including approximately $17 million in debt to be assumed by Hagemeyer P.P.S.
North America, Inc.).

The tender offer will be conditioned on at least two-thirds of Vallen's
outstanding shares, on a fully diluted basis, being validly tendered and not
withdrawn prior to expiration of the offer.  The expiration date of the offer
will be twenty business days following the commencement, unless the offer is
extended.  The tender offer and merger are also subject to expiration or
termination of the applicable waiting period under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976 and other customary conditions.  The tender
offer and merger are not contingent upon financing.

Hagemeyer N.V., the Netherlands-based parent company of Hagemeyer P.P.S. North
America, Inc., has unconditionally guaranteed all obligations of its
subsidiaries in the transaction.

Leonard J. Bruce, Chairman of the Board of Vallen, and his family agreed with
Hagemeyer to tender the approximately 56% of Vallen's outstanding shares held by
the family and to vote their shares in favor of the merger.

"We are very excited about this transaction," stated David G. Gundling,
President and CEO of Hagemeyer P.P.S. North America, Inc.  "Leonard Bruce has
built Vallen into the recognized
<PAGE>

leader in the industrial health and safety industry, and we are pleased that he
and the Board of Directors have entrusted us to carry on Vallen's over 50-year
tradition in this important industry."

"We have given this transaction thorough and careful consideration," said Mr.
Bruce, "and the Vallen Board of Directors shares my belief that it is in the
best interests of the Company and the Company's shareholders."  James W.
Thompson, President and Chief Executive Officer of Vallen stated, "We have great
respect for the Hagemeyer organization. Our industry-leading team of associates
will provide a platform to continue to grow the business after the transaction,
with exciting new opportunities for Vallen as a key part of a vibrant
multinational group."

Vallen is being advised by Salomon Smith Barney Inc. and William Blair & Company
L.L.C.  Hagemeyer is being advised by Deutsche Banc Alex. Brown.

Hagemeyer, N.V. is an international marketing and distribution company with
operations in Europe, North America and the Asia-Pacific region.  The Hagemeyer
group operates in over 60 countries and has approximately 22,000 employees world
wide.  Hagemeyer's shares are listed on the stock exchange in Amsterdam and form
part of the AEX index.

Vallen Corporation, through its operating subsidiaries, is engaged in providing
integrated safety products and related services as well as other industrial MRO
products to customers, including total safety solutions programs in customers'
working environments.  Its manufacturing facilities under Encon Safety Products,
Inc. produce a variety of safety products and other products for industrial and
commercial application, including emergency shower and eyewash fountains for
industrial usage, and a broad line of non-prescription safety eyewear
distributed throughout North and South America.  Vallen operates from 162
locations, including 69 onsite/just in time locations throughout North America
and in Chile.


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