NEWPARK RESOURCES INC
8-K, 1995-07-24
OIL & GAS FIELD SERVICES, NEC
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<PAGE>
 
================================================================================

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



                                    FORM 8-K

                                 CURRENT REPORT

        PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


Date of Report:  JULY 21, 1995

Date of Earliest Event:  JULY 18, 1995    Commission File:  No. 1-2960
 


                            NEWPARK RESOURCES, INC.
             (Exact name of registrant as specified in its charter)



                DELAWARE                     72-1123385
     (State or other jurisdiction of      (I.R.S. Employer
     incorporation or organization)      Identification No.)
 


       3850 N. CAUSEWAY, SUITE 1770            70002
           METAIRIE, LOUISIANA               (Zip Code)
 (Address of principal executive offices)



                                (504) 838-8222
                        (Registrant's telephone number)


================================================================================
<PAGE>
 
ITEM 5.  OTHER EVENTS

          On July 18, 1995, Newpark Resources, Inc., a Delaware corporation
("Newpark"), Penhall Acquisition Corporation, a Delaware corporation and a
newly-formed, wholly-owned subsidiary of Newpark ("Acquisition"), Penhall
International, Inc., a privately-held California corporation ("Penhall"), and
Roger C. Stull, the principal shareholder of Penhall, entered into a Merger
Agreement and Plan of Reorganization (the "Merger Agreement") pursuant to which
Acquisition will be merged with and into Penhall (the "Merger").  As a result of
the Merger, Penhall will become a wholly-owned subsidiary of Newpark, and each
outstanding share of Penhall Common Stock (other than shares held by
shareholders who perfect their appraisal rights under California law) will be
converted into the right to receive 9.229043 shares of Newpark Common Stock.
Assuming the Merger is consummated and no Penhall shareholder perfects appraisal
rights, the outstanding shares of Penhall Common Stock will be converted into an
aggregate of 3,636,363 shares of Newpark Common Stock.  The shares of Newpark
Common Stock to be issued in connection with the Merger will not be registered
under the Securities Act of 1933 but will be issued in reliance upon an
exemption under the Securities Act of 1933 and applicable state securities laws.

          It is presently contemplated that the Merger will become effective as
soon as practicable after the requisite approvals of the stockholders of Newpark
and Penhall have been obtained and various conditions have been satisfied (or
waived).

          For further information regarding the Merger Agreement, reference is
made to the copy of such agreement filed as an Exhibit to this Report and
incorporated herein by this reference.
 

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

(c)   Exhibits
 
1.    Merger Agreement and Plan or Reorganization, dated July 18, 1995, among
      Newpark, Acquisiton, Penhall and Stull.

2.    Press Release issued by Newpark on July 18, 1995.
<PAGE>
 
SIGNATURES

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



Dated:  July 21, 1995

                                         NEWPARK RESOURCES, INC.

 

                                         By: /s/ Matthew W. Hardey
                                            ------------------------------------
                                            Matthew W. Hardey, Vice President of
                                            Finance and Chief Financial Officer
<PAGE>
 
                                  EXHIBIT INDEX

<TABLE> 
<CAPTION> 
                                                                    SEQUENTIALLY
EXHIBIT                                                               NUMBERED
NUMBER                       DESCRIPTION                                PAGE
- ------                       -----------                            ------------
<S>           <C>                                                   <C> 

1.            Merger Agreement and Plan or Reorganization,
              dated July 18, 1995, among Newpark, Acquisition,
              Penhall and Stull.

2.            Press Release issued by Newpark on July 18, 1995.
</TABLE> 

<PAGE>
 
                  MERGER AGREEMENT AND PLAN OF REORGANIZATION

  THIS MERGER AGREEMENT AND PLAN OF REORGANIZATION ("Agreement") is made and
entered into on July 18, 1995, by and among NEWPARK RESOURCES, INC., a Delaware
corporation ("Newpark"), PENHALL ACQUISITION CORPORATION, a Delaware corporation
("Newco"), which is a wholly-owned subsidiary of Newpark, PENHALL INTERNATIONAL,
INC., a California corporation (the "Company"), and ROGER STULL ("Stull"), an
individual, with reference to the following facts:

     A.   Stull owns beneficially and of record approximately 87% of the
outstanding capital stock of the Company.  The term "Company Shares," as used
herein, means 100% of the outstanding capital stock of the Company.

     B.   The business of the Company is the provision of specialized
construction equipment and services.

     C.   The parties intend that this Agreement shall constitute a plan of
reorganization (the "Plan") of the type described in Sections 368(a)(1)(A) and
368(a)(2)(E) of the Internal Revenue Code of 1986, as amended (the "Code").  The
Plan comprises the merger (the "Merger") of Newco into the Company in accordance
with the applicable provisions of the California General Corporation Law (the
"CGCL") and the Delaware General Corporation Law (the "DGCL"), with Newco
disappearing and the Company surviving, and the conversion of the Company Shares
into 3,636,363 newly issued shares of Common Stock of Newpark (the "Newpark
Shares").

     D.   Newpark, Newco, the Company and Stull believe that it is in their best
interests to adopt and consummate the Plan.

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
herein contained, the parties agree as follows:

     1.   Plan of Reorganization.
          ---------------------- 

          1.1   Adoption of Plan.  Newpark, Newco, the Company and Stull hereby
                ----------------                                               
adopt the plan of reorganization herein set forth.

          1.2   Merger of Newco into the Company.  Subject to the provisions of
                --------------------------------                               
this Agreement, the CGCL and the DGCL, at the "Effective Time" (as defined in
Section 1.4) Newco will be merged with and into the Company, and the separate
corporate existence of Newco shall cease.  The Company, which will retain its
name, will be the surviving corporation in the Merger and shall continue its
corporate existence under the laws of the State of California.  The Merger will
have the effects set forth in Section 1107 of the CGCL and Section 259 of the
DGCL.

          1.3   Conversion of Shares.
                -------------------- 

                1.3.1    At the Effective Time, each of the Company Shares will
be converted into 9.229043 shares of Common Stock of Newpark, being an aggregate
of 3,636,363
<PAGE>
 
newly issued shares of Common Stock of Newpark, subject to adjustment for the
elimination of fractional shares. Cash equal to the "Share Value" (as defined in
Section 18) of such eliminated fractional shares will be paid in lieu thereof.
Certificates representing the Newpark Shares and checks for fractional shares
will be delivered to the shareholders of the Company ("Shareholders") upon
surrender to Newpark of valid stock certificates representing their Company
Shares. Certificates representing the Newpark Shares initially will bear the
following legend:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
     UNDER THE SECURITIES ACT OF 1933 AND MAY NOT BE SOLD, TRANSFERRED OR
     OTHERWISE DISPOSED OF UNLESS REGISTERED UNDER SAID ACT OR UNLESS AN
     EXEMPTION FROM SUCH REGISTRATION IS AVAILABLE IN THE OPINION OF
     COUNSEL FOR THE ISSUER."

                1.3.2    At the Effective Time, each share of Common Stock of
Newco that is issued and outstanding will be converted into one newly issued
share of Common Stock of the Company. From and after the Effective Time,
Newpark, as the sole shareholder of the Company, shall be entitled to receive,
upon surrender to the Company of the certificate or certificates representing
such shares, one or more certificates representing the Common Stock of the
Company into which such shares have been converted.

          1.4   Effective Time.  If all of the conditions precedent to the
                --------------                                            
parties' obligations to consummate the Merger under this Agreement are satisfied
or waived and this Agreement has not been terminated in accordance with the
provisions hereof, the parties shall cause an agreement of merger (the
"Agreement of Merger") in form and substance as set forth in Exhibit 1.4
attached hereto to be duly executed and filed with the Secretary of State of
California on the Closing Date and, concurrently therewith, a certificate of
merger (the "Certificate of Merger") in form and substance as set forth in
Exhibit 1.4(a) attached hereto to be duly executed and filed with the Secretary
of State of Delaware.  The Merger shall become effective as of the time the
Agreement of Merger is accepted for filing and officially filed in the State of
California and the Certificate of Merger is accepted for filing and officially
filed in the State of Delaware.  The date and time when the Merger becomes
effective is referred to herein as the "Effective Time."  This Agreement, the
Agreement of Merger and the Certificate of Merger are sometimes collectively
referred to herein as the "Merger Agreements."

          1.5   Capital Changes.  If Newpark shall combine, subdivide or
                ---------------                                         
reclassify its Common Stock, or shall declare any dividend payable in shares of
its Common Stock, or shall take any other action of a similar nature affecting
such shares, as of a record date between the date hereof and the Effective Time,
the number of Newpark Shares to be issued at the Effective Time shall be
adjusted to such extent as may be necessary to prevent dilution or enlargement
of the rights of the Shareholders.  Such adjustments shall be made by the
regular independent certified public accountants for Newpark and a written
report thereof, showing the adjustment and the underlying calculations, shall be
sent to each party hereto.

                                      -2-
<PAGE>
 
          1.6   Pooling of Interests.  Between the date hereof and the Effective
                --------------------                                            
Time, neither Newpark nor the Company nor any of their respective subsidiaries
or other "Affiliates" (as defined in Section 18) shall knowingly take any
action, or knowingly fail to take any action, that would jeopardize the
treatment of Newpark's acquisition of the Company as a "pooling of interests"
for accounting purposes or enter into any contract, agreement, commitment or
arrangement with such effect.  Following the Effective Time, Newpark shall use
its best efforts to conduct the business of the Company and shall cause the
Company to use its best efforts to conduct its business in a manner that would
not jeopardize the characterization of the Merger as a "pooling of interests"
for accounting purposes or as a reorganization within the meaning of Sections
368(a)(1)(A) and 368(a)(2)(E) of the Code.

     2.   Ancillary Agreements.
          -------------------- 

          2.1   Noncompetition Agreements.  On the Closing Date, as a necessary
                -------------------------                                      
incident of the Merger, Newpark will execute and deliver noncompetition
agreements substantially as set forth in Exhibit 2.1(a) attached to this
Agreement with Stull and each employee of the Company identified on Exhibit 2.1
attached to this Agreement.  Except for such agreement with Stull, which shall
be for a term of five years, such agreements will be for three year terms.

          2.2   Employment Agreement.  On the Closing Date, Newpark and Stull
                --------------------                                         
will execute and deliver an employment agreement substantially as set forth in
Exhibit 2.2(a) attached to this Agreement.  The compensation of Stull thereunder
shall be satisfactory to Newpark's Compensation Committee.

          2.3   Registration Rights Agreement.  On the Closing Date, Newpark
                -----------------------------
will execute and deliver an agreement substantially as set forth in Exhibit 2.3
attached to this Agreement with each of the Shareholders.

     3.   Representations and Warranties of the Company and Stull.
          ------------------------------------------------------- 

          Except as otherwise specifically set forth in a letter ("the
Disclosure Letter") delivered by the Company and Stull to Newpark and Newco
prior to the execution hereof, the Company and Stull hereby jointly and
severally warrant and represent the following (the truth and accuracy of each of
which shall constitute a condition precedent to Newpark's and Newco's
obligations to consummate the Merger and issue the Newpark Shares):

          3.1   Organization and Good Standing of the Company.
                --------------------------------------------- 

                3.1.1    The Company is a corporation duly organized, validly
existing and in good standing under the laws of the State of California, has
full corporate power and authority to carry on its business as now conducted by
it and is entitled to own or lease and operate its properties and assets now
owned or leased and operated by it.  The Company is duly qualified and in good
standing as a foreign corporation in each jurisdiction where the character

                                      -3-
<PAGE>
 
or location of the assets owned by the Company or the nature of the business
transacted by the Company require such qualification, except where failure to be
so qualified would not have a "Material Adverse Effect" (as defined in Section
18). The Disclosure Letter includes a list of the jurisdictions in which the
Company is qualified to do business.

                3.1.2    The Company has furnished to Newpark complete and
correct copies of the Company's Articles of Incorporation and Bylaws as in
effect on the date hereof.

                3.1.3    The Company has heretofore made available to Newpark
for its examination copies of the minute books, stock certificate books and
corporate seal of the Company.  Said minute books are accurate in all material
respects and reflect all resolutions adopted and all material actions expressly
authorized or ratified by the shareholders and directors of the Company.  The
stock certificate books reflect all issuances, transfers and cancellations of
capital stock of the Company.

          3.2   Capitalization.
                -------------- 

                3.2.1    The authorized capital stock of the Company consists of
5,000,000 shares of Common Stock without par value, of which 383,752 shares are
issued and outstanding as of the date hereof and 394,013 shares (i.e., the
"Company Shares") are expected to be outstanding on the Closing Date, giving
effect to the issuance of 10,261 shares of such Common Stock upon surrender of
the options to purchase 13,750 such shares that are listed in the Disclosure
Letter.  All such issued and outstanding shares are, and the additional shares
to be issued upon surrender of such options will be, when issued, validly
issued, fully paid and nonassessable.  The Disclosure Letter includes the names,
addresses and social security numbers of, and the number of the Company Shares
owned by, each of the Shareholders.

                3.2.2    The Disclosure Letter lists all options, warrants,
subscriptions or other rights outstanding for the purchase of, and all
securities convertible into, capital stock of the Company. No shares of the
Company are held as treasury stock.

          3.3   Company Subsidiaries.
                -------------------- 

                3.3.1    The Disclosure Letter includes a true and complete list
of all corporations, in which the Company has a material equity interest (each a
"Company Subsidiary" and collectively the "Company Subsidiaries"), the
jurisdiction in which each Company Subsidiary is incorporated and all shares of
capital stock that each Company Subsidiary has issued and outstanding.  Neither
the Company nor any Company Subsidiary has any material equity interest in any
partnership or other non-corporate entity.  The shares of capital stock of each
Company Subsidiary have been duly authorized and are validly issued, fully paid
and nonassessable.  All shares of capital stock of the Company Subsidiaries
owned by the Company and any Company Subsidiary are listed in the Disclosure
Letter and are owned by the Company or such Company Subsidiary free and clear of
all liens, encumbrances and adverse claims.

                                      -4-
<PAGE>
 
                3.3.2    Each Company Subsidiary is duly organized and in good
standing under the laws of the jurisdiction in which it was incorporated, has
full corporate power and authority to carry on its business as now conducted by
it and is entitled to own or lease and operate its properties and assets now
owned or leased and operated by it.  Each Company Subsidiary is duly qualified
and in good standing as a foreign corporation in each jurisdiction where the
character or location of the assets owned by it or the nature of the business
transacted by it require such qualification, except where failure to be so
qualified would not have a Material Adverse Effect.  The Disclosure Letter
includes a list of the jurisdictions in which each Company Subsidiary is
qualified to do business.

          3.4   Authority.  The execution and delivery of the Merger Agreements
                ---------                                                      
by the Company and the consummation of the transactions contemplated thereby
have been duly authorized by the Board of Directors of the Company, this
Agreement has been duly executed and delivered by the Company and, when this
Agreement and the Merger have been approved by the Shareholders, no further
corporate action will be necessary on the part of the Company to make this
Agreement valid and binding upon the Company in accordance with its terms,
subject to the "Bankruptcy Exception" (as defined in Section 18).  The Board of
Directors of the Company has authorized its management to solicit the
Shareholders to authorize and approve this Agreement and the Merger at the
earliest practicable time.  The execution, delivery and performance of the
Merger Agreements by the Company and Stull are not contrary to the Articles of
Incorporation or By-Laws of the Company and will not result in a violation or
breach of any material term or provision or constitute a default or give any
party a right to accelerate the due date of any indebtedness under any
indenture, mortgage, deed of trust or other material contract or agreement to
which the Company, Stull, any Company Subsidiary, or any of them, are parties or
by which the Company, Stull, any Company Subsidiary, or any of them, are bound.

          3.5   Financial Statements.  The consolidated balance sheets of the
                --------------------                                         
Company and its subsidiaries as of June 30, 1992, June 30, 1993, and June 30,
1994, and the related consolidated statements of income, stockholders' equity
and cash flows for the years ended June 30, 1992, June 30, 1993, and June 30,
1994, accompanied by the reports and opinions of Moss Adams, independent
certified public accountants, and the unaudited consolidated balance sheet of
the Company and its subsidiaries as of March 31, 1995, and the related
consolidated statements of income, stockholders' equity and cash flows for the
nine month period ended on said date, all certified by the principal financial
officer of the Company, subject to year-end audit adjustments, copies of which
have heretofore been delivered to Newpark (collectively the "Company Financial
Statements"), were prepared in accordance with the books and records of the
Company and its subsidiaries and in accordance with generally accepted
accounting principles (except for the absence of footnotes from the March 31,
1995, financial statements) consistently applied throughout the periods involved
(except as otherwise noted therein) and present fairly the consolidated
financial position, results of operations and cash flows of the Company and its
subsidiaries as of the end of each of such periods.

                                      -5-
<PAGE>
 
          3.6   Properties.  Subject to completion in due course of necessary
                ----------                                                   
title documentation affecting less than 2.5% of the assets and properties of the
Company and the Company Subsidiaries, the absence of which title documentation
is not indicative of any title defect, the Company and the Company Subsidiaries
have, and on the Closing Date will have, good title to the assets and properties
shown in the Company Financial Statements or acquired since the date of the
latest balance sheet included therein, except as since sold or otherwise
disposed of in the ordinary course of business, free and clear of all liens,
charges, security interests, encumbrances, leases, covenants, conditions and
restrictions other than "Permitted Liens" (as defined in Section 18).  The
plants, structures, leasehold improvements, machinery, equipment, furniture and
other tangible assets owned or leased by the Company and the Company
Subsidiaries are in good operating condition and repair, subject only to
ordinary wear and tear, taking into account the respective ages of the assets
involved, and constitute all the fixed tangible assets necessary for the
operation of the business of the Company and the Company Subsidiaries in
accordance with their current methods of operation in all material respects.

          3.7   Contracts.
                --------- 

                3.7.1    The Disclosure Letter includes a listing of all oral or
written (a) contracts, commitments, sales orders or purchase orders, whether or
not entered into in the ordinary course of business, which involve future
payments, performance of services or delivery of goods and/or materials, to or
by the Company or any Company Subsidiary of an amount or value in excess of
$500,000; (b) bonus, incentive compensation, pension, profit sharing, stock
option, group insurance, medical reimbursement or employee welfare or benefit
plans of any nature whatsoever; (c) collective bargaining agreements or other
contracts or commitments to or with labor unions or other employee groups; (d)
leases, contracts or commitments affecting ownership of, title to, use of or any
material interest in real estate; (e) employment contracts and other contracts,
agreements, or commitments to or with individual employees, consultants or
agents extending for a period of more than six months from the date hereof or
providing for earlier termination only upon payment of a penalty or the
equivalent thereof; (f) equipment leases providing (in any one lease or group of
related leases) for payments in excess of $500,000 per year; (g) contracts under
which the performance of any obligation of the Company or any Company Subsidiary
is guaranteed by a shareholder of the Company or other third party, including
performance bonding arrangements; (h) contracts or commitments providing for
payments based in any manner upon the revenues, purchases or profits of the
Company or any Company Subsidiary; (i) bank credit, factoring and loan
agreements, indentures, promissory notes and other documents representing
indebtedness in excess of $25,000 for borrowed money; (j) patent licensing
agreements and all other agreements with respect to patents, patent
applications, trademarks, service marks, trade names, technical assistance,
special processes, know-how, copyright or other like items; and (k) other
contracts and agreements to which the Company or any Company Subsidiary is a
party and which have not been fully performed, involving consideration having a
value in excess of $500,000 or a having a value in excess of $250,000 and a
remaining period for performance in excess of six months (all such items being
collectively referred to herein as "Material Contracts").  The Company has
furnished to Newpark true and complete copies of all such Material Contracts.

                                      -6-
<PAGE>
 
                3.7.2    All Material Contracts are valid and binding
obligations of the Company or Company Subsidiaries that are party thereto and,
to the best of the "knowledge of the Company" (as defined in Section 18) and
Stull, the other parties thereto in accordance with their respective terms,
subject to the Bankruptcy Exception; there have been no amendments to or
modifications to any Material Contract (except as set forth in the copies
furnished to Newpark); no event has occurred which is, or, following any grace
period or required notice, would become a material default by the Company or any
Company Subsidiary under the terms of any Material Contract; except to the
extent specifically reserved against on the latest balance sheet included in the
Company Financial Statements, neither the Company nor any Company Subsidiary is
a party to any Material Contract on which it anticipates expenses materially in
excess of revenues or which is otherwise materially onerous or materially
adverse; and neither the Company nor any Company Subsidiary has expressly waived
any material rights under any Material Contract.

          3.8   Outstanding Indebtedness.  The Disclosure Letter includes a true
                ------------------------
and complete schedule of all notes payable and other indebtedness in excess of
$25,000 for borrowed money owed by the Company and the Company Subsidiaries,
including a description of the material terms thereof and a description of all
properties or assets pledged, mortgaged or otherwise hypothecated (voluntarily
or involuntarily) as security therefor.

          3.9   Absence of Undisclosed Liabilities.  Except for liabilities and
                ----------------------------------                             
obligations reflected on the latest balance sheet included in the Company
Financial Statements or arising in the ordinary course of business since the
date of such balance sheet, none of which latter items, individually or in the
aggregate, have a Materially Adverse Effect: (a) the Company and the Company
Subsidiaries do not have, and none of their properties are subject to, any
debts, liabilities or obligations of any nature, whether accrued, absolute,
contingent or otherwise, which are of a type which are required to be shown or
reflected on financial statements prepared in a manner consistent with generally
accepted accounting principles; and (b) to the best of the knowledge of the
Company and Stull, the Company and the Company Subsidiaries do not have, and
none of their properties are subject to, any material debts, liabilities or
obligations of any nature, whether accrued, absolute, contingent or otherwise,
whether or not of a type required to  be shown or reflected on financial
statements prepared in a manner consistent with generally accepted accounting
principles.  Neither the Company nor any Company Subsidiary is in default with
respect to any material term or condition of any indebtedness for borrowed money
in excess of $25,000.

          3.10  No Litigation.  There are no actions, suits or proceedings
                -------------                                             
(whether or not purportedly on behalf of the Company or any Company Subsidiary)
pending or, to the knowledge of the Company and Stull, threatened against or
affecting the Company or any Company Subsidiary, at law or in equity or before
or by any governmental department, commission, board, bureau, agency or
instrumentality, domestic or foreign, or before any arbitrator of any kind.  To
the best of the knowledge of the Company and Stull, neither the Company nor any
Company Subsidiary is in default with respect to any judgment, order, writ,
injunction, decree, award of any court, arbitrator, governmental department,
commission, bureau, board, agency or instrumentality.

                                      -7-
<PAGE>
 
          3.11  Environmental Matters.
                --------------------- 

                3.11.1   Neither the Company or any Company Subsidiary nor, to
the best of the knowledge of the Company and Stull, any previous owner, lessee,
tenant, occupant or user of any real property owned or leased on or prior to the
date hereof by the Company or any Company Subsidiary (such real property and any
and all buildings and other improvements thereon being herein referred to as the
"Property") used, generated, manufactured, treated, handled,  refined,
processed, released, discharged, stored or disposed of any Hazardous Materials
(as defined in Section 18) on, under, in or about the Property, in violation of
any Hazardous Materials Laws (as defined in Section 18), in a manner or to an
extent that resulted or is reasonably likely to result in a Material Adverse
Effect.  Neither the Company nor any Company Subsidiary transported any
Hazardous Materials to or from the Property in violation of any Hazardous
Materials Laws in a manner or to an extent that resulted or is reasonably likely
to result in a Material Adverse Effect.  To the best of the knowledge of the
Company and Stull, no underground tanks or underground deposits or Hazardous
Materials the existence of which would have a Material Adverse Effect existed
on, under, in or about any Property previously owned or leased by the Company or
any Company Subsidiary on or prior to the date that fee or leasehold title to
such Property was transferred to a third party by the Company or Company
Subsidiary.  To the best of the knowledge of the Company and Stull, no
underground tanks or underground deposits or Hazardous Materials the existence
of which would have a Material Adverse Effect exist on, under, in or about any
Property that is currently owned or leased by the Company or any Company
Subsidiary.

                3.11.2   While any Property was owned or leased by the Company
or any Company Subsidiary, it did not violate to an extent that would have a
Material Adverse Effect any applicable federal, state and local laws, ordinances
or regulations, now or previously in effect, relating to environmental
conditions, industrial hygiene or Hazardous Materials on, under, in or about
such Property (including without limitation the Hazardous Materials Laws).

                3.11.3   As of the date hereof, to the best of the knowledge of
the Company and Stull, there are no (1) enforcement, clean-up, removal,
mitigation or other governmental or regulatory actions instituted, contemplated
or threatened pursuant to any Hazardous Materials Laws against the Company or
any Company Subsidiary, or any Property presently owned or leased by the Company
or any Company Subsidiary, (2) claims made or threatened by any person or
governmental body relating to the Property against the Company or any Company
Subsidiary or any Property presently owned or leased by the Company or any
Company Subsidiary or relating to damage, contribution, cost recovery,
compensation, loss or injury resulting from any Hazardous Materials or (3) any
occurrence or condition known to the Company on any Property that is currently
owned or leased by the Company or any Company Subsidiary that can reasonably be
expected to subject the Company, any Company Subsidiary or such Property to any
material restrictions on occupancy, transferability or use of any Property under
any Hazardous Materials Laws.  The Disclosure Letter includes a list of all
complaints, notices of violation and claims relating to Hazardous Materials Laws
which, to the knowledge of 

                                      -8-
<PAGE>
 
the Company and Stull, have been received by or asserted against the Company or
any of the Company Subsidiaries.

          3.12  Taxes.
                ----- 

                3.12.1   The Company and the Company Subsidiaries have each
filed all income, franchise and other "Tax Returns" (as defined in Section 18)
required to be filed by it by the date hereof. All "Taxes" (as defined in
Section 18) imposed by the United States, the State of California and by any
other state, municipality, subdivision, or other taxing authority, which are due
and payable by the Company and any Company Subsidiary have been paid in full or
are adequately provided for by reserves reflected on the latest balance sheet
included in the Company Financial Statements.

                3.12.2   All contributions due from the Company and the Company
Subsidiaries pursuant to any unemployment insurance or workers compensation laws
and all sales or use Taxes which are due or payable by the Company and the
Company Subsidiaries have been paid in full and will be so paid through the
Closing Date.  The Company and each Company Subsidiary have withheld and paid
to, or will cause to be paid to, the appropriate taxing authorities all amounts
required to be withheld from the wages of their employees under state law and
the applicable provisions of the Code, and the Company and Company Subsidiaries
will continue to do so with respect to all wages paid by them through the
Closing Date.

                3.12.3   The Company has furnished to Newpark true and complete
copies of the federal income Tax Returns and comparable state Tax Returns of the
Company and the Company Subsidiaries covering the last three (3) full fiscal
years of the Company and constituting complete and accurate representations in
all material respects of the Tax liabilities of the Company and the Company
Subsidiaries for the relevant periods stated therein and accurately setting
forth all relevant material items, including the Tax bases of all assets, where
required to be set forth in such Tax Returns.

          3.13  Permits and Licenses.  The Company and the Company Subsidiaries
                --------------------                                           
have all licenses, franchises, permits and other governmental authorizations
that are legally required to enable them to conduct their businesses in all
material respects as conducted on the date hereof, and the Company and the
Company Subsidiaries are in compliance in all material respects with all
applicable federal, state and local laws, rules, regulations and orders relating
to their businesses, except where failure to have any such license, franchise,
permit or authorization or failure to comply with any such laws, rules,
regulations and orders would not have a Material Adverse Effect.  The execution
and performance of this Agreement and the consummation of the transactions
contemplated hereby will not violate any provision of or constitute a default
under any law, rule or regulation, order, writ, injunction or decree of any
court or other governmental agency or instrumentality applicable to Stull, the
Company or any Company Subsidiary, where such violation or default would have a
Material Adverse Effect.

                                      -9-
<PAGE>
 
          3.14  No Labor Problems.  Neither the Company nor any Company
                -----------------                                      
Subsidiary has been charged with any unresolved unfair labor practices.  There
are no material controversies pending or threatened between the Company and the
Company Subsidiaries and any of their employees.  The Company and each Company
Subsidiary have complied in all material respects with all laws relating to
wages, hours, collective bargaining and similar employment matters the
noncompliance with which would have a Material Adverse Effect, and the Company
and the Company Subsidiaries have paid all social security and similar Taxes
that are due and payable and are not liable for any arrears or wages or any
Taxes or material penalties for failure to comply with any of the foregoing.

          3.15  Employee Benefit Plans.
                ---------------------- 

                3.15.1   Definition of Benefit Plans.  For purposes of this
                         ---------------------------                       
Section 3.15, the term "Benefit Plan" means any plan, program, arrangement,
practice or contract which provides benefits or compensation to or on behalf of
employees or former employees of the Company or any Company Subsidiary or any
"ERISA Affiliate" (as hereinafter defined), whether formal or informal, whether
or not written, including but not limited to the following:

                     (a) Arrangements - any bonus, incentive compensation,
                         ------------
stock option, deferred compensation, commission, severance, golden parachute or
other compensation plan, rabbi trust, program, contract, arrangement or
practice;

                     (b) ERISA Plans - any "employee benefit plan" (as defined
                         -----------                                          
in Section 3(3) of ERISA), including, but not limited to, any multi-employer
plan (as defined in Section 3(37) and Section 4001(a)(3) of ERISA), defined
benefit pension plan, profit sharing plan, money purchase pension plan, 401(k)
plan, savings or thrift plan, stock bonus plan, employee stock ownership plan,
or any plan, fund, program, arrangement or practice providing for medical
(including post-retirement medical), hospitalization, accident, sickness,
disability, or life insurance benefits; and

                     (c) Other Employee Fringe Benefits - any stock purchase,
                         ------------------------------                      
vacation, scholarship, day care, prepaid legal services, severance pay or other
fringe benefit plan, program, arrangement, contract or practice.

                3.15.2   ERISA Affiliate.  For purposes of this Section 3.15,
                         ---------------                                     
the term "ERISA Affiliate" means each trade or business (whether or not
incorporated) which together with the Company or any Company Subsidiary is
treated as single employer under Section 414(b), (c), (m) or (o) of the Code.

                3.15.3   Identification of Benefit Plans.  Except as set forth
                         -------------------------------                      
in the Disclosure Letter and except for Benefit Plans which have been terminated
and with respect to which neither the Company or any Company Subsidiary nor any
ERISA Affiliate has any liability or obligation, neither the Company nor any
Company Subsidiary maintains, or has at any time 

                                      -10-
<PAGE>
 
established or maintained,nor has at any time been obligated to make
contributions to or under or otherwise participate in any Benefit Plan.

                3.15.4   MEPPA Liability/Post-Retirement Medical Benefits/
                         -------------------------------------------------
Defined Benefit Plans/Supplemental Retirement Plans.  Except as set forth in the
- ---------------------------------------------------                             
Disclosure Letter, neither the Company  nor any Company Subsidiary nor any ERISA
Affiliate maintains, or has at any time established or maintained, or has at any
time been obligated to make contributions to or under any multi-employer plan
(as defined in Section 3(37) and Section 4001(a)(3) of ERISA).  Except as set
forth in the Disclosure Letter, neither the Company nor any Company Subsidiary
nor any ERISA Affiliate maintains, or has at any time established or maintained,
or has at any time been obligated to make contributions to or under (i) any plan
which provides post-retirement medical or health benefits, (ii) any organization
described in Sections 501(c)(9) or 501(c)(20) of the Code, (iii) any defined
benefit pension plan subject to Title IV of ERISA or (iv) any plan which
provides retirement benefits in excess of the limitations of Section 415 of the
Code.

                3.15.5   Documentation.  The Company has made available to
                         -------------                                    
Newpark a true and complete copy of the following documents, if applicable, with
respect to each Benefit Plan identified in the Disclosure Letter: (1) all
documents, including any insurance contracts and trust agreements, setting forth
the terms of the Benefit Plan, or if there are no such documents evidencing the
Benefit Plan, a full description of the Benefit Plan, (2) the ERISA summary plan
description and any other summary of plan provisions provided to participants or
beneficiaries for each such Benefit Plan, (3) the annual reports filed for the
most recent three plan years and most recent financial statements or periodic
accounting of related plan assets with respect to each Benefit Plan, (4) each
favorable determination letter, opinion or ruling from the IRS for each Benefit
Plan which is intended to satisfy the requirements of Section 401(a) or Section
501 of the Code or which is dependent on such letter, ruling or opinion to avoid
current federal come tax to the beneficiaries of such Benefit Plan, and in (5)
each opinion or ruling from the Department of Labor or the Pension Benefit
Guaranty Corporation ("PBGC") with respect to such Benefit Plans.

                3.15.6   Qualified Status.  Each Benefit Plan that is funded
                         ----------------                                   
through a trust or insurance contract and is intended to satisfy the
requirements of Section 401(a) of the Code, has at all times satisfied in all
material respects, by its terms and to the Company's best knowledge in its
operation, all applicable requirements under Section 401(a) and related sections
of the Code, and any such trust has been, and at the Effective Time shall be,
exempt from federal income taxation under Section 501(a) of the Code.

                3.15.7   Compliance.  Each Benefit Plan maintained by the
                         ----------                                      
Company or any Company Subsidiary or any ERISA Affiliate has at all times been
maintained, by its terms and, to the Company's best knowledge, in operation, in
accordance with all applicable laws in all material respects, including ERISA
and (to the extent applicable) Code Section 4980B.  Further, there has been no
failure to comply with applicable ERISA or other requirements concerning the
filing of reports, documents and notices with the Secretary of Labor and
Secretary of Treasury 

                                      -11-
<PAGE>
 
or the furnishing of such documents to participants or beneficiaries that could
subject any Benefit Plan, the Company, any Company Subsidiary or any ERISA
Affiliate to any material civil or any criminal sanction or could require any
such person to indemnify any other person for such a sanction.

                3.15.8   Funding.  The Company and each Company Subsidiary and
                         -------                                              
ERISA Affiliate has made full and timely payment of all amounts required to be
contributed under the terms of each Benefit Plan and applicable law or required
to be paid as expenses under such Benefit Plan including, but not limited to,
PBGC premiums and amounts required to be contributed under Section 412 of the
Code, and no excise taxes are assessable as a result of any nondeductible or
other contributions made or not made to a Benefit Plan.  With respect to any
Benefit Plan that is subject to Title IV of ERISA, (i) the present value of all
accrued benefits under such Benefit Plan does not exceed the value of the assets
of such Benefit Plan allocated to such accrued benefits, (ii) no amount is due
or owing from the Company, any Company Subsidiaries or any ERISA Affiliate to
the PBGC or to any "multiemployer plan" as defined in Section 3(37) of ERISA on
account of any withdrawal therefrom, (iii) no such Benefit Plan has incurred any
"accumulated funding deficiency" as such term is defined in Section 412 of the
Code, whether or not waived, since the effective date of such Section 412, (iv)
since September 2, 1974, no such Benefit Plan has been completely or partially
terminated, nor has any notice of intent to terminate been filed or given, other
than in accordance with ERISA or at a time when such Benefit Plan was not
sufficiently funded, (v) there has been no "reportable event" as such term is
defined in Section 4043(b) of ERISA, (vi) there has been no withdrawal by the
Company, any Company Subsidiary or any ERISA Affiliate that is a "substantial
employer" from a Benefit Plan that is a single employer plan that has two or
more contributing sponsors, at least two of whom are not under common control,
as referred to in Section 4063(b) of ERISA, and (vii) there has been no
cessation by the Company, any Company Subsidiary, or any ERISA Affiliate of
operations at a facility causing more than 20% of a Benefit Plan's participants
to be separated from employment, as referred to in Section 4062(f) of ERISA.
There are no liens against the property of the Company, any Company Subsidiary
or any ERISA Affiliate under Section 412(n) of the Code or Sections 302(f) or
4068 of ERISA.  The Company Financial Statements properly reflect all amounts
required to be accrued as liabilities under each Benefit Plan.  To the best
knowledge of the Company and Stull, the most recent actuarial valuations of the
Company's Benefit Plans were based on accurate facts and information, and the
Company has no reason to believe that the conclusions set forth in such
valuations are incorrect.

                3.15.9   Liabilities.  Neither the Company nor any Company
                         -----------                                      
Subsidiary nor any ERISA Affiliate is subject to any material liability, tax or
penalty whatsoever to any person whomsoever as a result of engaging in a
prohibited transaction under ERISA or the Code, and neither the Company nor any
Company Subsidiary nor any ERISA Affiliate has any knowledge of any
circumstances which reasonably might result in any material liability, tax or
penalty, including, but not limited to, a penalty under Section 502 of ERISA, as
a result of a breach of any duty under ERISA or any other applicable law. Other
than routine claims for benefits under the Benefit Plans, there are no pending
or threatened investigations, proceedings, claims, lawsuits, disputes, actions,
audits or controversies involving the Benefit Plans, or the 

                                      -12-
<PAGE>
 
fiduciaries, administrators, or trustees of any of the Benefit Plans, or the
Company, any Company Subsidiary or any ERISA Affiliate as the employer or
sponsor under any Benefit Plan, with any of the Internal Revenue Service,
Department of Labor, Pension Benefit Guaranty Corporation, any participant in or
beneficiary of the Benefit Plans or any other person whatsoever. The Company and
Stull know of no reasonable basis for any such claim, lawsuit, dispute, action
or controversy. Except as set forth in the Disclosure Letter, the execution and
performance of the transactions contemplated by this Agreement will not create,
accelerate or increase any obligations under any Benefit Plan, including any
obligation to make any payment which would not be deductible as an "excess
parachute payment" under Section 280G of the Code.

          3.16  Insurance.  The Company has furnished to Newpark a complete list
                ---------                                                       
of all insurance policies that the Company and Company Subsidiaries maintain,
indicating risks insured against, carrier, policy number, amount of coverage,
premiums and expiration date.

          3.17  Tax-Free Reorganization.  To the best of the knowledge of the
                -----------------------                                      
Company and Stull, there is no plan or intention by the shareholders of the
Company who individually own five percent (5%) or more of the Company Shares
and, to the best of the knowledge of the Company and Stull, there is no plan or
intention by the remaining shareholders of the Company to sell, exchange or
otherwise dispose of a number of the Newpark Shares that would reduce the
Shareholders' ownership of Newpark Shares to a number of shares having a value,
as of the date of the Merger, of less than fifty percent (50%) of the value of
all of the formerly outstanding Company Shares as of the same date.

          3.18  Interest in Competitors, Suppliers, etc.  Neither Stull nor any
                ---------------------------------------                        
officer or director of the Company nor any Family Member of any such person
owns, directly or indirectly, individually or collectively, any interest in any
corporation, partnership, proprietorship, firm or association which (a) is a
competitor, customer or supplier of the Company or any Company Subsidiary, or
(b) has an existing contractual relationship with the Company or any Company
Subsidiary, including but not limited to lessors of real or personal property
leased to the Company or any Company Subsidiary and entities against whom rights
or options are exercisable by the Company or any Company Subsidiary.

          3.19  Indebtedness with Insiders.  Except for accrued salaries for one
                --------------------------                                      
payroll period, vacation pay and business expense reimbursements, neither the
Company nor any Company Subsidiary is, and, on the Closing Date, neither the
Company nor any Company Subsidiary will be, indebted to any of the Shareholders
or any directors or officers of the Company or any Affiliate of any such person.
None of such persons is or will be on the Closing Date indebted to the Company
or any Company Subsidiary.

          3.20  Consents.  No authorizations, approvals or consents of any
                --------                                                  
governmental department, commission, bureau, agency or other public body or
authority, except such authorizations, approvals and consents as have been
obtained or will have been obtained at or before the Effective Time, are
required for consummation of the transactions contemplated by this Agreement.

                                      -13-
<PAGE>
 
          3.21  Patents, Trademarks and Other Intangibles.  The Disclosure
                -----------------------------------------
Letter includes a list of all material patents, patent applications, trade
names, trademark registrations and applications therefor, copyrights, licenses,
franchises and other assets of like kind ("Intangible Assets") and all interests
in Intangible Assets which are owned in whole or in part by or registered in the
name of the Company or any Company Subsidiary. The Company and Company
Subsidiaries own or have the right to use all Intangible Assets now used in the
conduct of their businesses. Neither the Company nor any Company Subsidiary is
obligated to pay any royalty or other fee to any licensor or other third party
with respect to any Intangible Assets. The Company and Stull have no knowledge
of any claim received by the Company or by any Company Subsidiary alleging any
conflict between any aspect of the business of the Company and Company
Subsidiaries and any Intangibles claimed to be owned by others which, if
determined adversely to the Company or Company Subsidiary, would have a Material
Adverse Effect. Neither Stull nor any other officer or director of the Company,
and no person or entity that is an Affiliate of any such person, has any
interest in any Intangibles Assets which are presently used by the Company or
any Company Subsidiary or which infringe upon, conflict with or relate to
improvements or modifications of any Intangible Assets presently used by the
Company or any Company Subsidiary.

          3.22  Purchases and Sales.  Since December 31, 1994, neither the
                -------------------                                       
Company nor any Company Subsidiary has placed any orders for materials,
merchandise or supplies in exceptional or unusual quantities based upon past
operating practices or has entered into contracts with customers under
conditions relating to price, terms of payment, time of performance or like
matters materially different from the conditions regularly and usually specified
in contracts for similar engagements from customers similarly situated.

          3.23  Brokerage and Finder's Fees.  Neither the Company nor Stull (or
                ---------------------------                                    
any Affiliate of Stull) has incurred any liability to any broker, finder or
agent for any brokerage fees, finder's fees or commissions with respect to the
transactions contemplated by this Agreement.

          3.24  Absence of Certain Changes.  Since June 30, 1994, except for
                --------------------------                                  
matters of a general economic nature which do not affect the Company and the
Company Subsidiaries uniquely, the Company and the Company Subsidiaries, taken
as a whole, have not:

                3.24.1   suffered any Material Adverse Effect;

                3.24.2   borrowed or agreed to borrow any funds in excess of
$25,000 in a single transaction or $100,000 in the aggregate except borrowings
under their bank lines of credit in the ordinary course of business or incurred
or become subject to any obligation or liability (absolute or contingent) in
excess of $25,000 in a single transaction or $100,000 in the aggregate except
obligations and liabilities incurred in the ordinary course of business;

                3.24.3   mortgaged, pledged, hypothecated or otherwise
encumbered any of their properties or assets except for Permitted Liens;

                                      -14-
<PAGE>
 
                3.24.4   made or agreed to make any distribution of any funds or
assets of any kind whatsoever to any past or present shareholder of the Company
or any Affiliate of any such Person, whether by way of dividend, redemption or
purchase of capital stock, or any other type of distribution on or with respect
to its capital stock, whether or not similar to the foregoing;

                3.24.5   made any payment of principal or interest on any
indebtedness owed to any past or present shareholder of the Company or any
Affiliate of any such person;

                3.24.6   sold or agreed to sell any of their assets, properties
or rights having an aggregate value in excess or $100,000 or canceled or agreed
to cancel any debts or claims exceeding $100,000 in the aggregate, except for
fair value in the ordinary course of business;

                3.24.7   entered or agreed to enter into any agreement or
arrangement granting any preferential right to purchase a material part of their
assets, properties or rights;

                3.24.8   increased the rate of compensation of or paid or
accrued bonuses to or for any of their officers, employees, consultants or
agents, except for normal merit or cost of living increases;

                3.24.9   suffered any damage, destruction or loss in excess of
an aggregate of $100,000, whether or not covered by insurance, adversely
affecting any of their properties;

                3.24.10  assigned or agreed to assign any of their Intangible
Assets having a value in excess of $100,000;

                3.24.11  suffered any adverse amendment or termination of any
Material Contract (or any contract that would have been a Material Contract if
not amended or terminated) to which any of them is a party;

                3.24.12  paid any commissions or similar fees to brokers or
finders for arranging the transactions contemplated by this Agreement or any
similar proposed transaction with any other party; or

                3.24.13  entered into any other material transaction other than
in the ordinary course of business.

          3.25  No Material Misstatements or Omissions.  No representation or
                --------------------------------------                       
warranty by the Company and Stull in this Agreement, and no document, statement,
certificate, exhibit 

                                      -15-
<PAGE>
 
or schedule furnished or to be furnished to Newpark pursuant hereto, or in
connection with the transactions contemplated hereby, contains or will contain
any untrue statement of a material fact.

          3.26  Accuracy of Information for Proxy Statement.  The information
                -------------------------------------------                  
relating to the Company and the Company Subsidiaries furnished and to be
furnished by the Company for inclusion in the "Proxy Statement" (as defined
herein) or in the "Memorandum" (as defined herein), or in any amendment or
supplement to the Proxy Statement or Memorandum or in any application or other
document ("Blue Sky application") filed in any state or other jurisdiction in
order to register or qualify the offer and sale of Newpark Shares contemplated
hereby under the securities laws of such state or other jurisdiction shall not
contain any untrue statement of a material fact or omit to state a material fact
required to be stated therein or necessary in order to make the statements
therein in the light of the circumstances under which they were made not
misleading at the time such Proxy Statement is mailed to Newpark's stockholders,
at the time the Memorandum is furnished to the Shareholders, at the time such
Blue Sky application becomes effective or at the effective time of any post-
effective amendment or supplement thereto.  All representations and warranties
contained in this Agreement with respect to the Company Financial Statements
shall apply to all financial statements furnished by the Company for use in the
Proxy Statement and Memorandum.

     4.   Additional Obligations and Covenants of the Company and Stull.
          ------------------------------------------------------------- 

          Except as otherwise provided in the Disclosure Letter, the Company and
Stull hereby jointly and severally covenant and agree with Newpark and Newco as
follows (the fulfillment of each such covenant and agreement is a condition
precedent to Newpark's and Newco's obligations to consummate the Merger and
issue the Newpark Shares):

          4.1   Conduct of Business.  Between the date hereof and the Closing
                -------------------                                          
Date:

                4.1.1    The business of the Company and Company Subsidiaries,
taken as a whole, shall be conducted diligently and only in the ordinary course,
and Stull and the Company will use reasonable efforts to preserve the
organization of the Company intact, to keep available to the Company and Company
Subsidiaries their present key employees and to maintain the relationships of
the Company and Company Subsidiaries with their suppliers, customers and others.
The Company and Company Subsidiaries will not, without Newpark's prior written
approval, increase the rate of compensation payable or to become payable to any
of their officers, employees, consultants or agents over the rate being paid to
them at the date hereof, except for normal merit or cost of living increases to
employees other than officers of the Company.

                4.1.2    Without Newpark's prior written approval, no amendment
will be made to any Benefit Plan, no commitment will be made to amend any
Benefit Plan and no commitment will be made to continue any Benefit Plan or to
adopt any new compensatory plan, fund or program for the benefit of any
employees of the Company, any Company Subsidiary or any ERISA Affiliate .

                                      -16-
<PAGE>
 
                4.1.3    The Company and Company Subsidiaries will not, without
Newpark's prior written approval, enter into any Material Contract other than in
the ordinary course of business or enter into contracts with customers under
conditions relating to price, terms of payment, time of performance or like
matters materially different from the conditions regularly and usually specified
in contracts for similar engagements from customers similarly situated.

                4.1.4    The Company and Company Subsidiaries will not, without
Newpark's prior written approval, sell or dispose of any of their material
properties or assets except for sales at fair value in the ordinary course of
business.

                4.1.5    The Company and Company Subsidiaries will not, without
Newpark's prior written approval, acquire or enter into any agreement to
acquire, by merger, consolidation, purchase of stock or assets or otherwise, any
business or entity.

                4.1.6    The Company and Company Subsidiaries will use
reasonable diligence to maintain their properties in their condition as of the
date of this Agreement, ordinary wear and tear excepted.

                4.1.7    The Company and Company Subsidiaries will continue to
carry their existing insurance policies subject only to variations in amounts
required by the ordinary operations of its business.  At the request of Newpark
and at its sole expense, the amount and scope of said insurance shall be
increased by such amounts and extended to provide coverage against such risks as
Newpark shall specify.

          4.2   Access and Information.  The Company and Stull will afford to
                ----------------------                                       
Newpark and Newpark's counsel, accountants and other representatives reasonable
access, throughout the period from the date hereof to the Closing Date, to all
of the Company's properties, books, contracts, commitments, and records and
shall furnish Newpark during such period with all information that Newpark
reasonably may request, including copies and/or extracts of pertinent records,
documents and contracts.  The provisions of the Confidentiality Agreement dated
as of June 1, 1995 (the "Confidentiality Agreement"), between Newpark and the
Company shall remain in full force and effect until the Merger is consummated.

          4.3   Efforts to Satisfy Conditions.  The Company and Stull agree to
                -----------------------------                                 
use reasonable efforts to satisfy or cause to be satisfied all of the conditions
precedent to Newpark's and Newco's obligations under this Agreement, to the
extent that their action or inaction can control or influence the satisfaction
of such conditions.  Without limiting the generality of the foregoing (a) Stull
agrees to vote all of the Company Shares beneficially owned by him or which he
has the right to vote in favor of the Merger and (b) Stull and the Company will
refrain from all negotiations and transactions, the consummation of which would
be inconsistent with the transactions contemplated by this Agreement, including,
without limitation, any transaction providing for the sale of any capital stock
of the Company (except as otherwise permitted herein) or any Company Subsidiary,
any merger or other business combination involving the Company or any Company
Subsidiary, the acquisition of a substantial equity interest in the Company or

                                      -17-
<PAGE>
 
any Company Subsidiary by a third party or the sale of a substantial portion of
the assets of the Company or any Company Subsidiary.

          4.4   Corporate Matters.  Between the date hereof and the Closing
                ----------------- 
Date, except as otherwise permitted herein, the Company will not, without
Newpark's prior written approval: (a) amend its Articles of Incorporation or
Bylaws; (b) issue any shares of its capital stock except on the exercise or
cancellation of outstanding employee stock options; (c) issue or create any
warrants, obligations, subscriptions, options, convertible securities or other
commitments under which any additional shares of its capital stock of any class
might be directly or indirectly authorized, issued or transferred from treasury,
or (d) enter into any agreement requiring it to do any of the foregoing
prohibited acts.

          4.5   No Distributions to Shareholders.  Between the date hereof and
                --------------------------------                              
the Closing Date, the Company will not, without Newpark's prior written
approval:  (a) declare, set aside or pay any dividend or make any distribution
in respect of its capital stock; (b) directly or indirectly purchase, redeem or
otherwise acquire any shares of its capital stock for consideration; (c) pay or
distribute any cash or property to any Shareholder as a loan or in payment of
principal of or interest on any indebtedness to any Shareholder; or (d) enter
into any agreement requiring it to do any of the foregoing prohibited acts.

          4.6   Capital Expenditures.  Between the date hereof and the Closing
                --------------------                                          
Date, the Company will not, without Newpark's prior written approval, make any
commitment for capital expenditures in excess of an aggregate of $1,500,000.

          4.7   Indebtedness.  Between the date hereof and the Closing Date,
                ------------                                                
neither the Company nor any Company Subsidiary will, without Newpark's prior
written approval: (a) create, incur or assume any long-term debt (including
capital leases that individually involve annual payments in excess of $500,000)
or, except in the ordinary course of business under existing lines of credit,
create, incur or assume any short-term debt for borrowed money in excess of
$25,000 in a single transaction or $100,000 in the aggregate; (b) assume,
guarantee, endorse or otherwise become liable or responsible (whether directly,
contingently or otherwise) for the obligations of any other person other than
Company Subsidiaries (except in the ordinary course of business and consistent
with past practice); (c) make any loans or advances to any other person other
than Company Subsidiaries except in the ordinary course of business and
consistent with past practice; or (d) make any capital contributions to, or
investments in, any Person other than Company Subsidiaries except in the
ordinary course of business and consistent with past practice.

          4.8   Information for Proxy Statement.  The Company will furnish to
                -------------------------------                              
Newpark all information concerning the Company and the Company Subsidiaries
required for inclusion in a proxy statement (the "Proxy Statement") to be filed
by Newpark with the Securities and Exchange Commission (the "Commission") under
the Securities Exchange Act of 1934 (the "Exchange Act") in connection with
Newpark's solicitation of the approval of the Merger by its  stockholders and in
a private placement memorandum (the "Memorandum") to be furnished to the
Shareholders in connection with their vote on the Merger.  The Company will use
reasonable 

                                      -18-
<PAGE>
 
efforts to facilitate the qualification of the issuance of the Newpark Shares in
connection with the Merger under Rule 506 of the Rules and Regulations and, if
necessary, under the applicable Blue Sky or securities laws of the various
states. The Company will not solicit approval by the Shareholders of the Merger
Agreements and the Merger until Newpark notifies it that definitive copies of
the Proxy Statement have been mailed to Newpark's stockholders or if Newpark
notifies the Company that the Proxy Statement or Memorandum must be amended or
supplemented prior to its use. The Company will bear all fees and disbursements
of counsel to the Company and Stull and the expenses of any audits of its
financial statements which are incidental to the performance of its obligations
under this Section and Section 4.9.

          4.9   Shareholder Approval.  At the earliest practicable time,
                --------------------                                    
consistent with applicable state and federal law,  the Company shall solicit all
necessary approval by the Shareholders of the Merger Agreements and the Merger
and, through its Board of Directors, shall recommend such approval by the
Shareholders.  The Company will furnish copies of the Memorandum to each of the
Shareholders and will provide to Newpark evidence reasonably satisfactory to
Newpark (i) that any Shareholder deemed by the Company to be an "accredited
investor" (as that term is defined in Rule 501 of the Rules and Regulations) is
such an accredited investor, (ii) that any Shareholder who is not deemed to be
such an accredited investor, either alone or with such Shareholder's qualified
"purchaser representative" (as defined in Rule 501 of the Rules and
Regulations), has such knowledge and experience in financial and business
matters that he or she is capable of evaluating the risks and merits of an
investment in Newpark Common Stock and (iii) that each Shareholder is acquiring
his or her Newpark Shares in the Merger for investment and not with a view to
the sale thereof other than in compliance with the requirements of the
Securities Act and applicable Blue Sky laws.  Upon approval of the Merger by the
Shareholders, the Company shall take all other necessary corporate action
required on its part hereunder to effect the closing of this Agreement and the
consummation of the transactions contemplated hereby.

          4.10  Affiliates.  Stull, as the only person who is an "affiliate" of
                ----------                                                     
the Company for purposes of Rule 145 under the Securities Act of 1933 (the
"Securities Act"), agrees to deliver to Newpark at or prior to the Effective
Time a written statement, in form and substance satisfactory to Newpark, that he
will not offer to sell, transfer or otherwise dispose of any the Newpark Shares
issued to him pursuant to the Merger, except (a) in accordance with the
applicable provisions of the Securities Act and the rules and regulations
thereunder and (b) until such time as financial results covering at least 30
days of combined operations of Newpark and the Company have been published
within the meaning of Section 201.01 of the Commission's Codification of
Financial Reporting Policies.

          4.11  Hart-Scott-Rodino Notification.  The Company will promptly file
                ------------------------------
a notification form in compliance with the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR Act"), and will respond promptly
to any request for additional information that it receives. The Company will
furnish to Newpark copies of (a) the notification form before it is filed, (b)
any request for additional information that it receives promptly after receiving
it and (c) the additional information to be furnished in response to any such
request before it is filed.

                                      -19-
<PAGE>
 
     5.   Representations and Warranties of Newpark and Newco.  Newpark and
          ---------------------------------------------------              
Newco hereby jointly and severally represent and warrant the following (the
truth and accuracy of each of which shall constitute a condition precedent to
the Company's and Stull's obligations to consummate the Merger):

          5.1   Organization and Good Standing.
                ------------------------------ 

                5.1.1    Each of Newpark and Newco is a corporation duly
organized, validly existing and in good standing under the laws of the State of
Delaware. Newpark has corporate power and authority to carry on its business as
presently conducted and is qualified to do business in every jurisdiction in
which the character and location of the assets owned by it or the nature of the
business transacted by it or both require qualification and failure to be so
qualified would have a Material Adverse Effect. Newco has not engaged in any
business.

                5.1.2    Newpark has furnished to the Company and Stull complete
and correct copies of Newpark's Certificate of Incorporation and Bylaws as in
effect on the date hereof.

                5.1.3    Newpark has heretofore made available to the Company
and Stull for their examination copies of the minute books and corporate seal of
Newpark.  Said minute books are accurate in all material respects and reflect
all resolutions adopted and all material actions expressly authorized or
ratified by the stockholders and directors of Newpark.

          5.2   Capital Stock.
                ------------- 

                5.2.1    The authorized capital stock of Newpark consists of
20,000,000 shares of Common Stock, $.01 par value, of which 10,037,285 shares
were issued and outstanding on May 1, 1995, and 1,000,000 shares of Preferred
Stock, $.01 par value, of which no shares are issued and outstanding.

                5.2.2    The authorized capital stock of Newco consists of 1,000
shares of Common Stock, $.01 par value, of which 1,000 shares are issued and
outstanding and held by Newpark on the date hereof.

          5.3   Newpark Subsidiaries.  Each subsidiary of Newpark that is a
                --------------------                                       
"significant subsidiary," as defined in Rule 1-02(w) of Regulation S-X of the
"Rules and Regulations" (as defined in Section 18) (each a "Newpark Subsidiary"
and collectively the "Newpark Subsidiaries), is duly organized and in good
standing under the laws of the jurisdiction in which it was incorporated or
organized, has full corporate or other entity power and authority to carry on
its business as now conducted by it and is entitled to own or lease and operate
its properties and assets now owned or leased and operated by it.  Each Newpark
Subsidiary is duly qualified and in good standing as a foreign corporation or
other entity in each jurisdiction where the character or location of the assets
owned by it or the nature of the business transacted by it require such

                                      -20-
<PAGE>
 
qualification, except where failure to be so qualified would not have a Material
Adverse Effect. The shares of capital stock and other equity interests of each
Newpark Subsidiary have been duly authorized and are validly issued, fully paid
and nonassessable. All shares of capital stock and other equity interests of the
Newpark Subsidiaries owned by Newpark and any Newpark Subsidiary are owned by
the Newpark or such Newpark Subsidiary free and clear of all liens, encumbrances
and adverse claims.

          5.4   Authority.  The execution and delivery of the Merger Agreements
                ---------                                                      
by Newpark and the consummation of the transactions contemplated thereby have
been duly authorized by the Board of Directors of Newpark, and the execution and
delivery of the Merger Agreements by Newco and the consummation of the
transactions contemplated thereby have been duly authorized by the Board of
Directors of Newco and by Newpark in its stockholder capacity.  This Agreement
has been duly executed and delivered to the Company and Stull and, when this
Agreement and the Merger have been approved by the stockholders of Newpark, no
further corporate action will be necessary on the part of the Newpark or Newco
to make this Agreement valid and binding upon Newpark and Newco in accordance
with its terms, subject to the Bankruptcy Exception.  The Board of Directors of
Newpark  has authorized its management to solicit its stockholders to authorize
and approve this Agreement and the Merger at the earliest practicable time.  The
execution, delivery and performance of the Merger Agreements by Newpark and
Newco are not contrary to the Certificate of Incorporation or Bylaws of Newpark
or Newco and will not result in a violation or breach of any term or provision
or constitute a default or give any party a right to accelerate the due date of
any indebtedness under any indenture, mortgage, deed of trust or other contract
or agreement to which Newpark or Newco are parties or by which Newpark or any
Newpark Subsidiary are bound.

          5.5   Newpark Reports.  Newpark has delivered to the Company and Stull
                ---------------                                                 
copies of (a) Newpark's Annual Reports on Form 10-K for the years ended December
31, 1992, 1993 and 1994, (b) Newpark's Quarterly Report on Form 10-Q for the
quarter ended March 31, 1995, and (c) Newpark's definitive Proxy Statement dated
May 1, 1995, for its Annual Meeting of Stockholders held on June 28, 1995.  All
of said documents are called the "Newpark Reports" herein.  The Newpark Reports
and all other reports required by the Rules and Regulations to be filed by
Newpark with the Commission have been duly and timely filed with the Commission
and are in compliance with the Rules and Regulations.  As of their respective
dates, none of the Newpark Reports and all other reports required by the Rules
and Regulations to be filed by Newpark with the Commission for any period after
December 31, 1993, contained any untrue statement of a material fact or omitted
to state a material fact required to be stated therein or necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading.

          5.6   Newpark Financial Statements.  The financial statements
                ----------------------------                             
contained in the Newpark Reports (the "Newpark Financial Statements") have been
prepared in accordance with the books and records of Newpark and its
subsidiaries and in accordance with generally accepted accounting principles
consistently applied during the periods indicated, all as more particularly set
forth in such financial statements and the Notes thereto.  Each of the balance
sheets included 

                                      -21-
<PAGE>
 
in the Newpark Financial Statements presents fairly as of its date the
consolidated financial condition and assets and liabilities of Newpark and its
subsidiaries. Except as and to the extent reflected or reserved against in such
balance sheets (including the Notes thereto), Newpark (including its
subsidiaries) did not have, as of the dates of such balance sheets, any material
liabilities or obligations (absolute or contingent) of a nature customarily
reflected in a balance sheet or the notes thereto prepared in accordance with
generally accepted accounting principles. The consolidated statements of
earnings and stockholders' equity and consolidated statements of changes in
financial position included in the Newpark Financial Statements present fairly
the results of operations and changes in financial position of Newpark and its
subsidiaries for the periods indicated.

          5.7   Properties.  Newpark and the Newpark Subsidiaries have, and on
                ----------                                                    
the Closing Date will have, good title to the assets and properties shown in the
Newpark Financial Statements or acquired since the date of the latest balance
sheet included therein, except as since sold or otherwise disposed of in the
ordinary course of business, subject to no liens, charges, security interests,
encumbrances, leases, covenants, conditions and restrictions except as disclosed
in the Newpark Reports or omitted therefrom in accordance with the Rules and
Regulations.  The plants, structures, leasehold improvements, machinery,
equipment, furniture and other tangible assets owned or leased by Newpark and
the Newpark Subsidiaries are in good operating condition and repair, subject
only to ordinary wear and tear, taking into account the respective ages of the
assets involved, and constitute all the fixed tangible assets necessary for the
operation of the business of Newpark and the Newpark Subsidiaries in accordance
with their current methods of operation in all material respects.

          5.8   Absence of Undisclosed Liabilities.  Except for liabilities and
                ----------------------------------                             
obligations reflected on the latest balance sheet included in the Newpark
Financial Statements or omitted therefrom in accordance with the Rules and
Regulations, and except for liabilities and obligations arising in the ordinary
course of business since the date of such balance sheet, none of which latter
items, individually or in the aggregate, have a Materially Adverse Effect: (a)
Newpark and the Newpark Subsidiaries do not have, and none of their properties
are subject to, any debts, liabilities or obligations of any nature, whether
accrued, absolute, contingent or otherwise, which are of a type normally shown
or reflected on financial statements prepared in a manner consistent with
generally accepted accounting principles; and (b) to the best of the "knowledge
of Newpark" (as defined in Section 18), Newpark and the Newark Subsidiaries do
not have, and none of their properties are subject to, any material debts,
liabilities or obligations of any nature, whether accrued, absolute, contingent
or otherwise, whether or not of a type normally shown or reflected on financial
statements prepared in a manner consistent with generally accepted accounting
principles.  Neither the Newpark nor any Newpark Subsidiary is in default with
respect to any material term or condition of any indebtedness.

          5.9   No Litigation.  Except as disclosed in the Newpark Reports or
                -------------                                                
omitted therefrom in accordance with the Rules and Regulations: (a) there are no
actions, suits or proceedings (whether or not purportedly on behalf of Newpark
or any Newpark Subsidiary) pending or, to the knowledge of Newpark, threatened
against or affecting the Newpark or any 

                                      -22-
<PAGE>
 
Newpark Subsidiary, at law or in equity or before or by any governmental
department, commission, board, bureau, agency or instrumentality, domestic or
foreign, or before any arbitrator of any kind; and (b) to the best of the
knowledge of Newpark, neither Newpark nor any Newpark Subsidiary is in default
with respect to any judgment, order, writ, injunction, decree, award of any
court, arbitrator, governmental department, commission, bureau, board, agency or
instrumentality.

          5.10  Permits and Licenses.  Newpark and the Newpark Subsidiaries have
                --------------------                                            
all licenses, franchises, permits and other governmental authorizations that are
legally required to enable them to conduct their businesses in all material
respects as conducted on the date hereof, and Newpark and the Newpark
Subsidiaries are in compliance in all material respects with all applicable
federal, state and local laws, rules, regulations and orders relating to their
businesses, except where failure to have any such license, franchise, permit or
authorization or failure to comply with such laws, rules, regulations and orders
would not have a Material Adverse Effect.  The execution and performance of this
Agreement and the consummation of the transactions contemplated hereby will not
violate any provision of or constitute a default under any law, rule or
regulation, order, writ, injunction or decree of any court or other governmental
agency or instrumentality applicable to Newpark or any Newpark  Subsidiary,
where such violation or default would have a Material Adverse Effect.

          5.11  Newpark Benefit Plans.  Newpark has made available to the 
                ---------------------  
Company a true and complete copy of the ERISA summary plan description and any
other summary of plan provisions provided to participants or beneficiaries, if
applicable, for each Benefit Plan (as defined in Section 3.15.1, substituting
"Newpark" for "the Company" and "the Company Subsidiaries") maintained by
Newpark.

          5.12  Environmental Matters.  Newpark and the Newpark Subsidiaries
                ---------------------
have complied in all material respects with all Hazardous Materials Laws
applicable to its properties and business. Neither Newpark nor, to the best of
Newpark's knowledge, any Newpark Subsidiary has received any complaint, order or
similar notice that it is not in compliance with any Hazardous Materials Laws or
that any public authority is investigating its compliance with any Hazardous
Materials Laws, except as disclosed in the Newpark Reports or omitted therefrom
in accordance with the Rules and Regulations and except for routine inspections
and investigations in connection with applications by Newpark and the Newpark
Subsidiaries for additional permits or authorizations. Newpark has no knowledge
of any material violation of any Hazardous Materials Laws on or about its
properties or the properties of any Newpark Subsidiary.

          5.13  Absence of Certain Changes.  Since December 31, 1994, except for
                --------------------------                                      
matters of a general economic nature which do not affect Newpark and the Newpark
Subsidiaries uniquely, Newpark and the Newpark Subsidiaries, taken as a whole,
have not:

                5.13.1   suffered any Material Adverse Effect;

                                      -23-
<PAGE>
 
                5.13.2   made or agreed to make any distribution of any funds or
assets of any kind whatsoever to any past or present stockholder of the Newpark
or any Affiliate of any such person, whether by way of dividend, redemption or
purchase of capital stock, or any other type of distribution on or with respect
to its capital stock, whether or not similar to the foregoing;

          5.13  issued any capital stock except upon the exercise of (a)
outstanding stock options and (b) other contractual commitments existing on or
before the date hereof.

          5.14  Consents.  No authorizations, approvals or consents of any
                --------                                                  
governmental department, commission, bureau, agency or other public body or
authority are required for consummation by Newpark or Newco of the transactions
contemplated by the Merger Agreements, except such registrations or
qualifications as may be required under the federal or state securities or Blue
Sky laws relating to the Newpark Shares.

          5.15  Patents, Trademarks and Other Intangibles.  Except as otherwise
                -----------------------------------------                      
disclosed in the Newpark Reports or omitted therefrom in accordance with the
Rules and Regulations, Newpark and the Newpark  Subsidiaries own or have the
right to use all Intangible Assets now used in the conduct of their businesses,
and Newpark has no knowledge of any claim received by it or by any Newpark
Subsidiary alleging any conflict between any aspect of the business of Newpark
and the Newpark Subsidiaries and any Intangible Assets claimed to be owned by
others which, if determined adversely to Newpark or such Newpark Subsidiary,
would have a Material Adverse Effect.

          5.16  No Material Misstatements or Omissions.  No representation or
                --------------------------------------                       
warranty by Newpark and Newco in this Agreement, and no document, statement,
certificate, exhibit or schedule furnished or to be furnished to the Company and
Stull and, in the case of the Memorandum, to the Shareholders, pursuant hereto,
or in connection with the transactions contemplated hereby, contains or will
contain any untrue statement of a material fact, or omits or will omit to state
a material fact necessary to make the statements or facts contained therein not
misleading.

     6.   Additional Obligations and Covenants of Newpark and Newco.
          --------------------------------------------------------- 

          Newpark and Newco, jointly and severally, hereby covenant and agree
with Stull and the Company as follows (the fulfillment of each such covenant and
agreement is a condition precedent to the Company's and Stull's obligations to
consummate the Merger):

          6.1   Efforts.  Newpark and Newco agree to use reasonable efforts to
                -------                                                       
satisfy or cause to be satisfied all of the conditions precedent to the
Company's and Stull's obligations under this Agreement, to the extent that their
action or inaction can control or influence the satisfaction of such conditions.

                                      -24-
<PAGE>
 
          6.2   Access and Information.  Newpark will afford to Stull and the
                ----------------------                                       
Company and their counsel, accountants and other representatives reasonable
access, throughout the period from the date hereof to the Closing Date, to all
of the Newpark's properties, books, contracts, commitments, and records and
shall furnish Stull and the Company during such period with all information that
Stull and the Company reasonably may request, including copies and/or extracts
of pertinent records, documents and contracts.  The provisions of the
Confidentiality Agreement dated as of June 1, 1995 (the "Confidentiality
Agreement"), between Newpark and the Company shall remain in full force and
effect until the Merger is consummated.

          6.3   Issuance of Stock.  Newpark has reserved for issuance, and, as
                -----------------                                             
and when required by the provisions of the Merger Agreements, will issue the
Newpark Shares, and the Newpark Shares, when so issued, will be validly issued,
fully paid and nonassessable.

          6.4   Exemption for Issuance of Newpark Shares.  Newpark will use all
                ----------------------------------------                       
reasonable efforts to qualify the issuance of the Newpark Shares in connection
with the Merger under Rule 506 of the Rules and Regulations and, if necessary,
to qualify the issuance thereof pursuant to all applicable state securities or
Blue Sky laws.  Newpark will prepare the Proxy Statement in accordance with the
requirements of the Exchange Act and will prepare the Memorandum in accordance
with the informational requirements of Regulation D of the Rules and
Regulations.  Newpark will furnish to the Company copies of the Memorandum,
which the Company shall use in connection with the solicitation of the approval
of the Shareholders referred to in Section 4.9.  In addition, Newpark will make
available to each Shareholder prior to the vote on the Merger the opportunity to
ask questions and receive answers concerning the terms and conditions of the
Merger and to obtain any additional information that Newpark is required to
furnish under Regulation D of the Rules and Regulations.  Except as provided in
the last sentence of Section 4.8, all expenses incident to the preparation of
the Proxy Statement and the Memorandum and the qualification or registration of
the Newpark Shares under the Blue Sky laws of any state or other jurisdiction
including, without limitation, all registration and filing fees, printing
expenses, expenses of complying with state securities and Blue Sky laws, fees
and expenses of counsel for Newpark, and expenses of any audits of Newpark's
financial statements incidental to such registration or qualification, shall be
borne by Newpark.

          6.5   Corporate Matters.  Between the date hereof and the Closing
                -----------------
Date, Newpark will not, without the Company's prior written approval: (a) amend
its Certificate of Incorporation; (b) issue shares of its capital stock except
on exercise of (i) outstanding options and (ii) other contractual commitments
existing on or before the date hereof, and except for an additional 100,000
shares of Common Stock which may be issued without such consent; (c) issue or
create any warrants, obligations, subscriptions, options, convertible securities
or other commitments under which any additional shares of its capital stock of
any class might be directly or indirectly authorized, issued or transferred from
treasury, except for options granted to employees under Newpark's existing
employee stock option plans, as amended at the 1995 Annual Meeting of
Stockholders; or (d) enter into any agreement requiring it to do any of the
foregoing prohibited acts.

                                      -25-
<PAGE>
 
          6.6   No Distributions to Stockholders.  Between the date hereof and
                --------------------------------                              
the Closing Date, Newpark will not, without the Company's prior written
approval: (a) declare, set aside or pay any dividend or make any distribution in
respect of its capital stock; (b) directly or indirectly purchase, redeem or
otherwise acquire any shares of its capital stock for consideration; (c) pay or
distribute any cash or property to any stockholder as a loan or in payment of
principal of or interest on any indebtedness to any stockholder; or (d) enter
into any agreement requiring it to do any of the foregoing prohibited acts.

          6.7   Hart-Scott-Rodino Notification.  Newpark will promptly file a
                ------------------------------                               
notification form in compliance with the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended, and will respond promptly to any request
for additional information that it receives. Newpark will furnish to the Company
copies of (a) the notification form before it is filed, (b) any request for
additional information that it receives promptly after receiving it and (c) the
additional information to be furnished in response to any such request before it
is filed.

          6.8   Authorization by Stockholders.  At the earliest practicable
                -----------------------------
time, consistent with applicable state and federal law, Newpark shall solicit
all necessary approval by its stockholders of the Merger Agreements and the
Merger and, through its Board of Directors, shall recommend such approval by
such stockholders, provided, however, that such recommendation is subject to any
action taken by or upon the authority of the Board of Directors of Newpark in
the exercise of its good faith judgment as to its fiduciary duties to its
stockholders, which judgment is based upon the written advice of independent
legal counsel that a failure of the Board of Directors to withdraw its
recommendation would be likely to constitute a breach of its fiduciary duties to
such stockholders. Upon approval of the Merger Agreements and the Merger by its
stockholders, Newpark shall take all other necessary corporate action required
on its part hereunder to effect the closing of this Agreement and the
consummation of the transactions contemplated hereby.

          6.9   Election of Directors.  The Board of Directors of Newpark will
                ---------------------                                         
use its best efforts to cause two persons designated by the Company to be
elected to the Board of Directors of Newpark at the Effective Time.

          6.10  Additional Reports to Commission.  Newpark will duly and timely
                --------------------------------                               
file all periodic reports required to be filed with the Commission in accordance
with the Rules and Regulations. None of such reports will contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they are made, not misleading.

     7.   Conditions to Each Party's Obligations.
          -------------------------------------- 

          The respective obligations of each party to consummate the Merger
under this Agreement shall be subject to the satisfaction on or before the
Closing Date of each of the following conditions except to the extent the
parties may waive any of such conditions in writing:

                                      -26-
<PAGE>
 
          7.11  Securities Laws.  The Proxy Statement shall have been mailed to
                ---------------                                                
Newpark's stockholders in accordance with the requirements of the Exchange Act
and the CGCL, all applicable Blue Sky and state securities laws shall have been
complied with in connection with the issuance of the Newpark Shares, and no
order suspending the qualification or registration of the Newpark Shares under
the Blue Sky laws of any jurisdiction shall have been issued and no proceeding
for that purpose shall have been initiated or shall be threatened by the
authorities of any such jurisdiction.

          7.2   Company Shareholder Approval.  The Merger and this Agreement
                ----------------------------                                
shall have been approved at the shareholders' meeting of the Company duly called
and held in accordance with the CGCL by the holders of a majority of the Company
Stock outstanding and entitled to vote thereon.

          7.3   Newpark Stockholder Approval.  This Agreement and the issuance
                ----------------------------                                    
of the Newpark Shares in accordance with this Agreement shall have been approved
at the stockholders' meeting of Newpark duly called and held in accordance with
the DGCL by the holders of a majority of the shares of Common Stock of Newpark
present and voting at the stockholders' meeting.

          7.4   Consents.  All consents, authorizations, orders and approvals of
                --------                                                        
(or filings or registrations with) any governmental commission, board or other
regulatory body required in connection with the execution, delivery and
performance of this Agreement shall have been obtained or made, except for
filing of the Agreement of Merger, the Certificate of Merger and any other
documents required to be filed after the Effective Time and except where the
failure to have obtained or made any such consent, authorization,order,
approval, filing or registration would not have a Material Adverse Effect
following the Effective Time.

          7.5   HSR Act.  Early termination shall have been granted or
                -------
applicable waiting periods shall have expired under the HSR Act.

          7.6   Injunction.  At the Effective Time there shall be no effective
                ----------                                                    
injunction, writ or preliminary restraining order or any order of any nature
issued by a court or governmental agency of competent jurisdiction to the effect
that the Merger may not be consummated as herein provided, no proceeding or
lawsuit shall have been commenced by any governmental or regulatory agency for
the purpose of obtaining any such injunction, writ or preliminary restraining
order and no written notice shall have been received from any such agency
indicating an intent to restrain, prevent, materially delay or restructure the
transactions contemplated by this Agreement.

          7.7   Tax Opinion.  The Company and Newpark shall each have received a
                -----------                                                     
written opinion of Ervin, Cohen & Jessup, in form reasonably satisfactory to the
Company and Newpark (the "Tax Opinion"), to the effect that (a) the Merger will
constitute a reorganization within the meaning of Sections 368(a)(1)(A) and
368(a)(2)(E) of the Code, (ii) the conversion in the 

                                      -27-
<PAGE>
 
Merger of Company Shares into Newpark Shares will not give rise to gain or loss
to the shareholders of the Company, (c) the basis of Newpark Shares received in
the Merger by a Shareholder will be the same as the basis of such Shareholder in
Company Shares converted into such Newpark Shares, and (d) the holding period
for Newpark Shares received in the Merger by a Shareholder will include the
holding period of such stockholder in Company Shares converted into such Newpark
Shares. In connection with such tax opinion, Ervin, Cohen & Jessup shall be
entitled to make factual assumptions as are customary in similar tax opinions,
and such factual assumptions shall be confirmed by certificates signed by
responsible officers of the Company and Newpark.

          7.8   Pooling.  The Company and Newpark shall have been advised in
                -------                                                     
writing, as of the Effective Time, by Deloitte & Touche that, in accordance with
generally accepted accounting principles, the Merger qualifies to be treated as
a "pooling of interests" for accounting purposes.

     8.   Conditions Precedent to Obligations of Newpark and Newco.
          -------------------------------------------------------- 

          The obligations of Newpark and Newco to consummate the Merger and
issue the Newpark Shares are subject to the satisfaction of each of the
additional following conditions at or prior to the Closing, unless waived in
writing by Newpark:

          8.1   Accuracy of Warranties and Representations.  The
                ------------------------------------------      
representations and warranties of the Company and Stull herein shall be true and
correct in all material respects on and as of the Closing Date, with the same
force and effect, except as to transactions permitted herein or to which Newpark
may have consented in writing and changes occurring in the ordinary course of
business after the date of this Agreement and not materially adversely affecting
the Company, or its properties, prospects, or financial condition, as though
such representations and warranties had been made on and as of the Closing Date,
and the Company and Stull shall have performed in all material respects all
covenants required by this Agreement to be performed by them at or prior to the
Closing.

          8.2   Authorization of Merger.  All corporate action necessary by the
                -----------------------                                        
Company to authorize the execution, delivery and performance of this Agreement
and the consummation of the transactions contemplated hereby shall have been
duly and validly taken.

          8.3   No Adverse Change.  There shall have been no changes after the
                -----------------                                             
date of this Agreement in the results of operations, assets, liabilities,
financial condition or affairs of the Company and the Company Subsidiaries which
in their total effect have been materially adverse to the Company.

          8.4   Officers' Certificate.  The Company and Stull shall have
                ---------------------                                   
delivered to Newpark a certificate, dated the Closing Date, executed by the
President and the Chief Financial Officer of the Company and by the Stull,
stating that, to the best knowledge of each, (a) all the representations and
warranties of the Company and Stull contained in this Agreement are true

                                      -28-
<PAGE>
 
and accurate, (b) all of the conditions precedent to the obligations of Newpark
and Newco hereunder have been fulfilled and (c) the Company and Stull have duly
performed all obligations and covenants to be performed by them hereunder.

          8.5   Material Contracts.  The Company shall have received consents to
                ------------------                                              
assignment of all Material Contracts or written waivers of the provisions of any
Material Contracts requiring the consents of third parties as set forth in the
Disclosure Letter.

          8.6   Dissenters.  Holders of not more than 5% of the Company Shares
                ----------                                                    
shall have elected to exercise appraisal rights under the CGCL and shall have
not voted in favor of the Merger.

          8.7   Opinion of the Company's Counsel.  Newpark shall have received
                --------------------------------
an opinion of Troy & Gould Professional Corporation, dated the Closing Date,
substantially in the form attached hereto as Exhibit 8.7.

          8.8   Other Legal Matters.  All legal matters in connection with this
                -------------------                                            
Agreement and the transactions contemplated hereby shall have been approved by
counsel for Newpark, and there shall have been furnished to such counsel by the
Company certified copies of such corporate records of the Company (including
Board of Directors and shareholder resolutions approving the Merger Agreements)
and copies of such other documents as such counsel may reasonably have requested
for such purpose.

     9.   Conditions Precedent to Obligation of the Company and Stull.
          ----------------------------------------------------------- 

          The obligations of the Company and Stull to consummate the Merger are
subject to the satisfaction of each of the following additional conditions at or
prior to the Closing, unless waived in writing by Stull:

          9.1   Accuracy of Warranties and Representations.  The representations
                ------------------------------------------                      
and warranties of Newpark and Newco contained in this Agreement shall be true
and correct in all material respects on and as of the Closing Date, with the
same force and effect as though such representations and warranties had been
made on and as of the Closing Date, and Newpark and Newco shall have performed
in all material respects all of the covenants required by this Agreement to be
performed by them on or before the Closing.

          9.2   Authorization of Merger.  All corporate action necessary by
                -----------------------                                    
Newpark and Newco to authorize the execution, delivery and performance of this
Agreement and the consummation of the transactions contemplated hereby shall
have been duly and validly taken.

          9.3   No Material Adverse Change.  There shall have been no changes
                --------------------------                                   
after the date of this Agreement, in the results of operations, financial
condition, liquidity, assets, properties or business of Newpark and its
subsidiaries, taken as a whole.

                                      -29-
<PAGE>
 
          9.4   Officers' Certificate of Newpark.  Newpark shall have delivered
                --------------------------------                               
to the Company and Stull a certificate dated the Closing, signed by the
President and Chief Financial Officer of Newpark and stating that, to the best
knowledge of each, (a) all the representations and warranties of the Newpark and
Newco contained in this Agreement are true and accurate, (b) all of the
conditions precedent to the obligations of the Company and Stull hereunder have
been fulfilled and (c) Newpark and Newco have duly performed all obligations and
covenants to be performed by them hereunder.

          9.5   Opinion of the Newpark's Counsel.  The Company and Stull shall
                --------------------------------                              
have received an opinion of Ervin, Cohen & Jessup, dated the Closing Date,
substantially in the form attached hereto as Exhibit 9.5.

          9.6   Other Legal Matters.  All legal matters in connection with this
                -------------------                                            
Agreement and the transactions contemplated hereby shall have been approved by
counsel for the Company and Stull, and there shall have been furnished to such
counsel by Newpark certified copies of such corporate records of Newpark
(including Board of Directors and shareholder resolutions approving the Merger
Agreements) and copies of such other documents as such counsel may reasonably
have requested for such purpose.

     10.  Closing.
          ------- 

          The closing ("Closing") of the transactions covered by this Agreement
shall take place at 8:00 a.m., on September 14, 1995, at the offices of Ervin,
Cohen & Jessup, 9401 Wilshire Blvd., Ninth Floor,Beverly Hills, California.
Regardless of the actual time of the Closing, the Closing shall be deemed to
have occurred effective at the opening of business on the day the Closing
occurs. In the event that the conditions specified in this Agreement have not
been fulfilled by that date, any party may postpone the Closing for the minimum
reasonably necessary period or periods, in any event not exceeding an aggregate
of 45 days, by written notice to the other parties. Any party exercising such
right shall deliver written notice to the other parties specifying in reasonable
detail the condition which has not been fulfilled, and the other parties will
have the right to cure or correct the matter within the 45-day period. The term
"Closing Date" herein shall mean the last date fixed by mutual agreement or
otherwise under this Section.

     11.  Survival of Representations.
          --------------------------- 

          All representations and warranties made by the Company and Newco under
or in connection with this Agreement shall terminate at the Effective Time and
shall be of no further force or effect thereafter. All representations,
warranties and indemnifications made by Stull or Newpark under or in connection
with this Agreement (including any representations and warranties set forth in
the certificates delivered pursuant to Sections 8.4 and 9.4) shall survive the
Closing until the earlier to occur of (a) one year after the Effective time and
(b) the date when Newpark's independent accountants issue an audit report on
their audit of the financial statements containing combined operations of
Newpark and the Company for the period ending December 31, 1995. Neither party
shall be entitled to recover against the other for any misrepresentation

                                      -30-
<PAGE>
 
or breach of warranty except to the extent that written notice of any such claim
has been delivered to the party against whom recovery is sought within the
applicable period setting forth in reasonable detail and specifying the nature
of the claim being asserted.

     12.  Post-Closing Covenants.
          ---------------------- 

          12.1  Cooperation and Assistance.  Upon request, each of the parties
                --------------------------                                    
hereto shall cooperate with the other to the extent reasonably requested, at the
requesting party's expense, in furnishing information, testimony and other
assistance in connection with any actions, proceedings, arrangements or disputes
involving Stull, the Company, Newpark or Newco which are based upon contracts,
arrangements or acts of Stull or the Company or both which were in effect or
occurred on or prior to the Closing.

          12.2  Access to Records.  Stull shall be entitled, after the Closing,
                -----------------                                              
upon reasonable notice and during the regular business hours of Newpark, to have
access to and to make copies of the business records of the Company which relate
to periods prior to the Closing. Newpark shall retain such business records for
a period of five (5) years following the Closing Date, after which time Newpark
may destroy or otherwise dispose of such business records without Stull's
consent.

          12.3  Tax Matters.
                ----------- 
 
                12.3.1   Control of Tax Proceedings.  Whenever any taxing
                         --------------------------                      
authority asserts a claim, makes an assessment, or otherwise disputes the amount
of Taxes for any period prior to the Closing Date Newpark shall promptly inform
Stull. The provisions of Section 13 shall apply to the defense of any such
claim, assessment or dispute.

                12.3.2   Current Tax Returns.  The Company shall be
                         -------------------                       
responsible for the preparation and filing of all Tax Returns for the Company
and Company Subsidiaries for all taxable periods that end or ended on or before
the Closing Date, subject to Stull's supervision. Such Tax Returns shall be
reasonably satisfactory to Newpark in form and substance.

                12.3.3   Refunds and Credits.  Any refunds and credits of Taxes
                         -------------------                                   
attributable to any taxable year ending on or before the Closing Date shall be
for the account of the Company.

                12.3.4   Cooperation.  Newpark and Stull shall cooperate with
                         -----------                                         
each other in a timely manner in the preparation and filing of any Tax Returns,
payment of any Taxes in accordance with this Agreement, and the conduct of any
audit or other proceeding. Each party shall execute and deliver such powers of
attorney and make available such other documents as are necessary to carry out
the intent of this Section 12.3.4. Each party agrees to notify the other party
of any audit adjustments that do not result in Tax liability but can be
reasonably expected to affect Tax Returns of the other party.

                                      -31-
<PAGE>
 
                12.3.5   Retention of Records.  Newpark shall (i) retain
                         --------------------                           
records, documents, accounting data and other information (including computer
data) necessary for the preparation and filing of all Tax Returns or the audit
of such returns, and (ii) give to the Stull reasonable access to such records,
documents, accounting data and other information (including computer data) and
to its personnel (insuring their cooperation) and premises, for the purpose of
the review or audit of such returns to the extent relevant to an obligation or
liability of a party under this Agreement.

     13.  Indemnifications.
          ---------------- 

          13.1  Indemnification by Stull.  Subject to the provisions of Sections
                ------------------------                                        
11 and 13.3, Stull hereby agrees to indemnify, defend, protect and hold harmless
Newpark against all damages, losses, liabilities, costs and expenses (including
reasonable attorneys' fees) resulting from any breach of any warranty or
representation made by him and the Company under or in connection with this
Agreement. Such indemnification shall be solely the responsibility of Stull, and
he shall not have any right to recover any portion of his liability from the
Company, whether by right of indemnification, contribution or otherwise.

          13.2  Indemnification by Newpark.  Subject to the provisions of
                --------------------------                               
Sections 11 and 13.3, Newpark hereby agrees to indemnify, defend, protect and
hold harmless Shareholders against all damages, losses, liabilities, costs and
expenses (including reasonable attorneys' fees) resulting from any breach of any
warranty or representation made by Newpark and Newco under or in connection with
this Agreement. The rights to such indemnification shall accrue solely to
Shareholders, and the Company shall have no interest therein.

          13.3  Indemnification Procedures and Limitations.  The following
                ------------------------------------------                
provisions shall apply to all indemnification and hold harmless provisions of
this Agreement:

                13.3.1   No party shall be required to indemnify another
pursuant hereto unless the party seeking indemnification (the "Indemnitee")
shall, with reasonable promptness, provide the other party (the "Indemnitor")
with copies of any claims or other documents received and shall otherwise make
available to the Indemnitor all material relevant information. The Indemnitor
shall have the right to defend any such claim at its expense, with counsel of
its choosing, and the Indemnitee shall have the right, at its expense, using
counsel of its choosing, to join in the defense of any such claim. The
Indemnitee's failure to give prompt notice or to provide copies of documents or
to furnish relevant data shall not constitute a defense in whole or in part to
any claim by the Indemnitee against the Indemnitor except to the extent that
such failure by the Indemnitee shall result in a material prejudice to the
Indemnitor.

                13.3.2   Except as hereinafter provided, neither party shall
settle or compromise any such claim unless it shall first obtain the written
consent of the other, which shall not be unreasonably withheld. The foregoing
notwithstanding, if suit shall have been instituted against the Indemnitee and
the Indemnitor shall have failed, after the lapse of a reasonable time after
written notice to it of such suit, to take action to defend the same, the
Indemnitee shall have

                                      -32-
<PAGE>
 
the right to defend the claim (without limiting the right of the Indemnitor to
participate in the defense) and to charge the Indemnitor with the reasonable
cost of any such defense, including reasonable attorneys' fees, and the
Indemnitee shall have the right, after notifying but without consulting the
Indemnitor, to settle or compromise such claim on any terms reasonably approved
by the Indemnitee.

                13.3.3   Neither Newpark nor Stull shall have any liability for
breach or warranty or representation hereunder except to the extent that the
amount of all valid claims for breach of warranty or representation against it
or him hereunder exceeds an aggregate of $1,200,000. In no event shall the
liability of Newpark or Stull for all breaches of warranty or representation
hereunder exceed ten percent (10%) of the Share Value of the Newpark Shares into
which Stull's Company Shares have been converted in the Merger. To the fullest
extent permitted by law, Stull shall satisfy his liability hereunder by
delivering to Newpark some or all of such Newpark Shares, valued at their Share
Value, and Newpark shall satisfy its liability by issuing additional Newpark
Shares valued at their Share Value. Nothing contained herein shall relieve Stull
or Newpark of any liability he or it may have for any intentional breach of
representation or warranty.

                13.3.4   In determining the amount of any damage, loss,
liability, cost or expense suffered by Newpark which gives rise to liability of
Stull hereunder, there shall be taken into account the amount of any Tax
benefits actually realized by Newpark and its subsidiaries attributable to such
damage, loss, liability, cost or expense or derived therefrom in the same or any
past or subsequent taxable period, also taking into account the Tax treatment of
the receipt by Newpark of any payment from Stull.

          13.4  Dispute Resolution; Arbitration.
                ------------------------------- 

                13.4.1   The parties desire to finally resolve any and all
issues and disputes arising out of or related to this Agreement or its alleged
breach as promptly as practicable and, in any event, before Newpark's
independent accountants issue an audit report on their audit of the financial
statements containing combined operations of Newpark and the Company for the
period ending December 31, 1995. Any such issue or dispute shall first be
referred to senior executives of the parties for resolution between them, if
possible. Those executives may, if they desire, consult outside experts or a
mutually respected disinterested person for assistance in arriving at a
resolution. The senior executives also may, if they desire, agree to mediate the
dispute and shall, if they choose, do so in accordance with the Commercial
Mediation Rules of the American Arbitration Association ("AAA"), either as
written or as modified by mutual agreement. A written agreement to undertake
mediation may be made at any time. If arbitration proceedings have been
instituted, they shall be stayed until the mediation process is terminated. Any
dispute arising out of or related to this Agreement or its alleged breach that
cannot be resolved by mutual agreement (including mutually agreed mediation)
shall be resolved exclusively by final and binding arbitration, conducted as
expeditiously as possible in the City of Los Angeles, California. Sections 1280
et. seq., of the California Code of Civil Procedure ("CCP") shall apply to this
- --  ---                                                                        
Section and proceedings conducted pursuant to this Section.

                                      -33-
<PAGE>
 
To the extent lawful, the arbitrators, in their discretion, may shorten any time
periods or notice periods specified by law, in the interest of timely completing
arbitration and issuing their award.

                13.4.2   Either party may initiate arbitration of a dispute by
giving the other party written notice of arbitration, which shall specify with
reasonable detail (a) the issue in dispute, (b) the claims asserted and (c) the
remedy sought by the party invoking arbitration. The arbitration shall be
conducted before a single neutral arbitrator if the parties are able to agree on
one arbitrator. If they are unable so to agree and do not agree otherwise,
arbitration shall be conducted by a panel of three neutral arbitrators. None of
the arbitrators shall be affiliated in any way with either of the parties or
have any direct or indirect financial interest in the outcome of the
arbitration. If the parties fail to reach agreement upon a single arbitrator
within 5 business days following receipt by one party of the other party's
notice of arbitration, the initiating party shall submit in writing to the other
party the name of a neutral arbitrator selected by the initiating party. Within
5 business days after such name is submitted, the other party shall submit to
the initiating party in writing the name of a neutral arbitrator selected by
such other party and may submit an answering statement. Within 10 days after
appointment of the second arbitrator, the two arbitrators appointed by the
parties shall select a third neutral arbitrator; the three arbitrators so
selected shall finally resolve the dispute. If the two arbitrators appointed by
the parties fail before the end of said 10 day period to agree on a third
arbitrator, the Superior Court of the State of California for the County of Los
Angeles shall, upon the filing of a petition by any of the parties hereto
pursuant to the provisions of Section 1281.6 of the California Code of Civil
Procedure (or any successor section) and after a hearing at which all parties
are afforded an opportunity to be present and be heard, select the third
arbitrator from a list of five persons obtained by the Court from the Los
Angeles Office of the American Arbitration Association. If the non-initiating
party shall fail to appoint an arbitrator within 10 days after the name of the
arbitrator selected by the initiating party is submitted, the arbitrator
appointed by the initiating party shall be empowered to proceed to arbitrate and
determine the matter in controversy as the sole arbitrator. All references to
"the arbitrators" in the following Sections shall be deemed to refer to the sole
arbitrator, if there is only one arbitrator. The arbitrators shall, at the
earliest possible date, set dates for a hearing and establish any pre-hearing
conferences or procedural schedules that the arbitrators deem appropriate. The
arbitrators may authorize depositions and issue subpoenas in accordance with the
CCP and make other decisions provided for in Section 13.4.3 below. All decisions
of the arbitrators shall be by a majority of the arbitrators, unless the parties
agree otherwise.

                13.4.3   It is the mutual intention of the parties that
discovery, if any, shall be limited in nature and scope and, to the extent
possible, shall be handled informally and by agreement.  Any dispute regarding
discovery shall be submitted promptly to the arbitrators and shall be resolved
by them.  If necessary, any decision of the arbitrators respecting discovery may
be enforced by any court of competent jurisdiction in the same manner as a final
award under this Section, including an order for specific performance.

                                      -34-
<PAGE>
 
                13.4.4   The arbitration proceedings shall be held in Los
Angeles, California, at a place to be agreed upon by the parties. A stenographic
record of the proceedings shall be made and supplied to the arbitrators and
parties. Unless the parties agree otherwise, the arbitrators shall require
witnesses to testify under oath or affirmation. The parties may offer such
evidence as is relevant and material to the dispute and shall produce such
additional evidence as the arbitrators may deem necessary to the determination
of the dispute. All evidence to be considered by the arbitrators shall be
offered at the hearing and subject to cross-examination unless the parties agree
otherwise. The parties may, by mutual agreement, provide for presentation of
evidence by written statements or other summary procedures. Prior to the hearing
the parties shall exchange lists of names and addresses of all witnesses,
together with the substance of the testimony of each and the report, vita and
publication list of any expert witness. The arbitrators may, in their sole
discretion, and as a cost of arbitration, employ experts not associated with,
employed by or affiliated with any party hereto to assist the arbitrators in
making their determination of the matter being arbitrated. Unless the parties
agree otherwise, the parties shall simultaneously file initial briefs within 5
business days following the close of the hearing and reply briefs 5 business
days thereafter. The hearing shall be deemed closed as of the final date set for
the receipt of briefs.

                13.4.5   The arbitration may proceed in the absence of a party
that, after due notice, fails to be present.  An award shall not be made solely
on the default of a party, but the arbitrators shall require the party that is
present to submit such available evidence as may be reasonably required for the
making of an award.

                13.4.6   All communications from the parties to the
arbitrators shall be in writing except in unusual circumstances requiring oral
communication regarding procedural or scheduling matters. Any oral communication
to the arbitrators shall be promptly confirmed in writing. Copies of all
communications with the arbitrators shall be served delivered immediately to the
other party. Any papers, notices, or process necessary or proper for the
initiation or completion of arbitration under this Section, or for the entry or
enforcement of judgment on an award, may be served upon a party by personal
service or by mail addressed to it at the address designated in this Agreement
for the receipt of notices.

                13.4.7   The arbitrators shall diligently, expeditiously and in
good faith decide the matter under consideration in accordance with the laws of
the State of California, excluding its choice of law rules. The arbitrators
shall use their best efforts to make their award before the expiration of the
period specified in the introduction to Section 13.4.1. If there is only one
arbitrator, his decision shall be final, conclusive and binding on all parties;
if there are three arbitrators, the agreed decision of any two of them shall be
final, conclusive and binding on all parties. The arbitrators shall prepare an
award in writing which reflects the final decision of the arbitrators and a copy
of such award shall be delivered to each party to the arbitration. Judicial
confirmation of the decision of the arbitrators shall be sought only in the Los
Angeles County Superior Court. Section 1293 of CCP is hereby expressly made
applicable to this Agreement.

                13.4.8   The arbitrators' compensation shall be agreed upon by
the

                                      -35-
<PAGE>
 
parties and the arbitrators. The terms of compensation for each of the
arbitrators shall be identical. The parties shall share equally the cost of the
arbitration proceedings, including the fees and expenses of the arbitrators and
the cost of the stenographic record.

                13.4.9   If any other provision of this Agreement should be or
become invalid or ceable by force of law, the provisions of this Section 13.4
shall not be affected but shall remain in full force and effect. Any obligation
to arbitrate which is established by this Section shall remain in full force and
effect. Any obligation to arbitrate which is established by this Section shall
not be extinguished upon the termination or expiration of this Agreement but
shall survive that event.

     14.  Destruction of Assets.
          --------------------- 

          All risk of loss with respect to the assets and business of the
Company shall be borne by the Company until the Closing to the extent set forth
in this Section 14. If on the Closing Date any assets of the Company shall have
suffered loss or damage on account of fire, flood, accident, act of war, civil
commotion, or any other cause or event beyond the reasonable power and control
of the Company (whether or not similar to the foregoing) to an extent which
materially affects the value to Newpark of the Company Shares, Newpark shall
have the right at its election to complete the acquisition (in which event, as
Newpark's sole and exclusive remedy with respect to the consequences of such
loss or damage, all claims of the Company with respect to such loss or damage
and all insurance proceeds arising therefrom shall be for the account of the
Company), or, if it does not so elect, it shall have the right, which shall be
in lieu of any other right or remedy whatsoever, to terminate this Agreement. In
the latter event, all parties shall be released from liability hereunder.

     15.  Termination.
          ----------- 

          In addition to any party's right to terminate this Agreement if any
condition precedent to its obligations is not satisfied on the Closing Date,
subject to the provisions of this Agreement relating to the postponement of the
Closing Date, either Newpark or the Company and Stull may forthwith terminate
this Agreement:  (a) subject to clause (b) below, without liability to the other
of them if a bona fide action or proceeding (by and at the sole instance of a
party or parties not an affiliate or affiliates of Newpark or the Company) shall
be pending against either party on the Closing Date wherein an unfavorable
judgment, decree or order would prevent or make unlawful the carrying out of the
transactions contemplated by this Agreement; or (b) without prejudice to other
rights and remedies which either party may have, if a material default shall be
made by the other of them in the observance or in the due and timely performance
of its covenants and agreements herein contained, or if there shall have been a
material breach of the warranties and representations herein contained.

                                      -36-
<PAGE>
 
     16.  Notices.
          ------- 

          Any and all notices, demands, requests or other communications
hereunder shall be in writing and shall be deemed duly given when personally
delivered to or transmitted by overnight express delivery or by facsimile to and
received by the party to whom such notice is intended, or in lieu of such
personal delivery or overnight express delivery or facsimile transmission, 48
hours after deposit in the United States mail, first-class, certified or
registered, postage prepaid, return receipt requested, addressed to the
applicable party at the address provided below.  The parties may change their
respective addresses for the purpose of this Section 16 by giving notice of such
change to the other party in the manner which is provided in this Section 16.

Stull or the Company:           c/o Penhall International, Inc.
                                1801 Penhall Way
                                Anaheim, CA 92803
                                Facsimile No.:  (714) 999-2493

                                With a copy to:

                                William D. Gould, Esq.
                                Troy & Gould Professional Corporation
                                1801 Century Park East, 16th Floor
                                Los Angeles, CA  90067
                                Facsimile No.:  (310) 201-4746

Newpark or Newco:               c/o Newpark Resources, Inc.
                                3850 North Causeway, Suite 1770
                                Metairie, LA 70002
                                Attention:  Secretary
                                Facsimile No.:  (504) 833-9506

                                With a copy to:

                                Bertram K. Massing, Esq.
                                Ervin, Cohen & Jessup
                                9401 Wilshire Boulevard, 9th Floor
                                Beverly Hills, CA  90212
                                Facsimile No.:  (310) 859-2325

                                      -37-
<PAGE>
 
     17.  Assignment.
          ---------- 

          Rights hereunder shall not be assignable and duties hereunder shall
not be delegable by the Company, Stull, Newpark or Newco without the prior
written consent of the other; consent may be withheld for any reason or without
reason.  Nothing contained in or implied from this Agreement is intended to
confer any rights or remedies upon any person or entity, other than the parties
hereto and their successors in interest and permitted assignees, unless
expressly stated herein to the contrary.

     18.  Certain Definitions.
          ------------------- 

          As used herein, the following terms (whether used in the singular or
the plural) have the following meanings:

          "Affiliate" or "affiliate" means, with respect to any Person, any
other Person directly or indirectly controlling, controlled by or under common
control with such Person and, without limiting the generality of the foregoing,
includes (a) any director or officer of such Person or of any Affiliate of such
Person, (b) any such director's or officer's Family Members, (c) any group,
acting in concert, of one or more of such directors, officers or Family Members,
and (d) any Person controlled by any such director, officer, Family Member or
group which beneficially owns or holds 25% or more of any class of equity
securities or profits interest.  The term "control" means the possession,
directly or indirectly, of the power to direct or cause the direction of the
management and policies of an entity, whether through the ownership of voting
securities, by contract or otherwise.

          "Bankruptcy Exception" means the limitation on enforceability imposed
by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws
of general application relating to or affecting the enforcement of the rights of
creditors or by equitable principles, whether enforcement is sought in equity or
at law.

          "Family Member" means, in the case of a Person who is an individual,
any parent, spouse or lineal descendant (including legally adopted descendants)
of such Person, or the spouse of any such descendant.

          "Hazardous Material Laws" means any and all federal, state and local
laws in effect at or before the Effective Time that relate to or impose
liability or standards of conduct concerning the environment, as now or
hereafter in effect and as have been or hereafter may be amended or
reauthorized, including without limitation, the Comprehensive Environmental
Response, Compensation and Liability Act (42 U.S.C. (S) 9601, et seq.), the
Hazardous Materials Transportation Act (42 U.S.C. (S) 1802, et seq.), the
Resource Conservation and Recovery Act (42 U.S.C. (S) 6901, et seq.), the
Federal Water Pollution Control Act (33 U.S.C. (S) 1251, et seq.), the Toxic
Substances Control Act (14 U.S.C. (S) 2601, et seq.), the Clean Air Act (42
U.S.C., (S) 7901 et seq.), the National Environmental Policy Act (42 U.S.C. (S)
4231, et seq.), the Refuse Act (33 U.S.C. (S) 407, et seq.), the Safe Drinking
Water Act (42 U.S.C. (S) 300(f), et seq.), and all rules,

                                      -38-
<PAGE>
 
regulations, codes, ordinances and guidance documents promulgated or published
thereunder, and the provisions of any licenses, permits, orders and decrees
issued pursuant to any of the foregoing.

          "Hazardous Materials," means any flammable explosives, radioactive
materials, asbestos, compounds known as polychlorinated byphenyls, chemicals now
known to cause cancer or reproductive toxicity, pollutants, contaminants,
hazardous wastes, toxic substances or related materials, including, without
limitation, any substances defined as or included in the definition of
"hazardous substances," "hazardous wastes," "hazardous materials," or "toxic
substances" under the Hazardous Materials Laws.

          "Knowledge of the Company" (and similar terms such as "to the best of
the knowledge of the Company") means the actual knowledge of Stull or any other
executive officer of the Company.

          "Knowledge of Newpark" (and similar terms such as "to the best of the
knowledge of Newpark") means the actual knowledge of any executive officer of
Newpark.

          "Material Adverse Effect" means a material adverse effect on the
financial condition, results of operations, business or prospects of the entity
referred to (i.e., the Company or Newpark) and its subsidiaries (i.e., the
Company Subsidiaries or the Newpark Subsidiaries), taken as a whole.

          "Permitted Lien(s)" means (a) all liens and encumbrances disclosed in
the Disclosure Letter, (b) landlords', mechanics', carriers', workers' and
similar statutory liens arising in the ordinary course of business for sums not
delinquent, for which adequate reserves or other appropriate provisions have
been made in the Company Financial Statements, (c) deed restrictions and similar
exceptions to clear title not incurred in connection with indebtedness that do
not materially impair the existing use or materially detract from the value of
the assets or property subject thereto, and (d) liens for current taxes not
delinquent, for which adequate reserves or other appropriate provisions have
been made in the Company Financial Statements.
 
          "Person" or "person" means an individual, a corporation, a
partnership, an association, a trust or any other entity or organization,
including a government or political subdivision or any agency or instrumentality
thereof.

          "Rules and Regulations" means the rules and regulations adopted by the
Commission under the Securities Act and the Exchange Act.

          "Share Value" means the average of the closing prices of Newpark
Common Stock on The Nasdaq Stock Market for the ten trading days ending on and
including the Closing Date.

          "Tax" (including with correlative meaning, the terms "Taxes" and
"Taxable") means any income, gross receipts, ad valorem, premium, excise, value-
added, sales, use, transfer, franchise, license, severance, stamp, occupation,
service, lease, withholding, employment, payroll, premium, property or windfall
profits tax, alternative or add-on-minimum tax, or other tax, fee

                                      -39-
<PAGE>
 
or assessment, together with any interest and any penalty, addition to tax or
additional amount imposed by any governmental authority responsible for the
imposition of any such tax.

          "Tax Return" means any return, report, statement, information
statement and the like required to be filed with any authority with respect to
Taxes.

     19.  Applicable Law; Jurisdiction.
          ---------------------------- 

          The provisions of this Agreement and all rights and obligations
hereunder and under all documents, instruments and agreements executed under or
in connection with this Agreement shall be governed and construed in accordance
with the internal laws of the State of California applicable to contracts made
and to be wholly performed within said State.

     20.  Remedies Not Exclusive.
          ---------------------- 

          Except as provided in Section 14, (a) no remedy conferred by any of
the specific provisions of this Agreement is intended to be exclusive of any
other remedy, (b) each and every remedy shall be cumulative and shall be in
addition to every other remedy given hereunder or now or hereafter existing at
law, in equity, or otherwise and (c) the election of any one or more remedies by
either party hereto shall not constitute a waiver of the right to pursue other
available remedies.

     21.  Attorneys' Fees.
          --------------- 

          In any litigation relating to this Agreement, including  litigation
with respect to any instrument, document or agreement made under or in
connection with this Agreement, the prevailing party shall be entitled to
recover its costs and reasonable attorneys' fees.

     22.  Payment of Expenses.  Whether or not the Merger is consummated,
          -------------------                                            
Newpark will pay and be responsible for all costs and expenses incurred by
Newpark and Newco in connection with this Agreement and the transactions
contemplated hereby, and the Company will pay and be responsible for all costs
and expenses incurred by the Company and Stull in connection with this Agreement
and the transactions contemplated hereby.

     23.  Successors and Assigns.
          ---------------------- 

          All covenants, representations, warranties and agreements of the
parties contained herein shall be binding upon and inure to the benefit of the
parties, their respective heirs, personal representatives and permitted
successors and assigns.

     24.  Counterparts.
          ------------ 

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

                                      -40-
<PAGE>
 
     25.  Headings; Severability.
          ---------------------- 

          Captions and section headings used herein are for convenience only and
are not a part of this Agreement and shall not be used in construing it.  The
provisions of this Agreement are severable, and, if any one or more provisions
may be determined to be judicially unenforceable, in whole or in part, the
remaining provisions, and any partially unenforceable provisions, to the extent
enforceable, shall nevertheless be binding and enforceable upon the parties
hereto.

     26.  Amendments.
          ---------- 

          No provision or term of this Agreement or any agreement contemplated
herein between the parties hereto may be supplemented, amended, modified, waived
or terminated except in a writing duly executed by the party to be charged.
This Agreement may be amended by the corporate parties hereto by or pursuant to
action taken by their respective Boards of Directors at any time before or after
the approval of the Merger by their shareholders, but after such approval, no
amendment or modification shall be made that reduces the amount or changes the
form of the consideration to be paid to Shareholders or that in any way
materially adversely affects the rights of such the shareholders of the Company
or Newpark without the further approval of the adversely affected shareholders.

     27.  Waivers.
          ------- 

          At any time prior to the Effective Time, the parties hereto, may, to
the extent legally permitted:  (i) extend the time for the performance of any of
the obligations or other acts or any other party; (ii) waive any inaccuracies in
the representations or warranties of any other party contained in this Agreement
or in any document or certificate delivered pursuant hereto; (iii) waive
compliance or performance by any other party with any of the covenants,
agreements or obligations of such party contained herein; and (iv) waive the
satisfaction of any condition that is precedent to the performance by the party
so waiving of any of its obligations hereunder.  Any agreement on the part of a
party hereto to any such extension or waiver shall be valid only if set forth in
an instrument in writing signed on behalf of such party.  A waiver by one party
of the performance of any covenant, agreement, obligation, condition,
representation or warranty shall not be construed as a waiver of any other
covenant, agreement, obligation, condition, representation or warranty.  A
waiver by any party of the performance of any act shall not constitute a waiver
of the performance of any other act or an identical act required to be performed
at a later time.

     28.  Entire Agreement.
          ---------------- 

          The Disclosure Letter and all schedules, exhibits and financial
statements provided for herein are a part of this Agreement. This Agreement and
the other agreements and documents provided for in this Agreement comprise the
entire agreement of the parties and supersede all earlier understandings of the
parties with respect to the subject matter hereof, except that the
Confidentiality Agreement shall continue in effect in accordance with its terms.

                                      -41-
<PAGE>
 
     IN WITNESS WHEREOF, the parties have duly executed this Agreement as of the
date first above written.

THE COMPANY:                                 STULL:

PENHALL INTERNATIONAL, INC.
 

By: /s/Roger Stull, President                /s/Roger Stull
   ------------------------                  ------------------------------
  Roger Stull, President                     Roger Stull, an individual
 
NEWPARK:                                     NEWCO:

NEWPARK RESOURCES, INC.                      PENHALL ACQUISITION CORPORATION


By:/s/James D. Cole, President               By:/s/James D. Cole, President   
   -------------------------                    ----------------------------
  James D. Cole, President                     James D. Cole, President   

                                      -42-
<PAGE>
 
                             OFFICER'S CERTIFICATE
                                        
     I, Charles Steichen, Secretary of Penhall International, Inc., a California
corporation, hereby certify as follows:

     1.  The foregoing MERGER AGREEMENT AND PLAN OF REORGANIZATION (the "Merger
Agreement"), dated as of July 18, 1995, among Penhall International, Inc., Roger
Stull, Newpark Resources, Inc., a Delaware corporation, and Penhall Acquisition
Corporation, a Delaware corporation, was adopted and approved by the Board of
Directors of Penhall International, Inc., in accordance with Section 252 of the
General Corporation Law of the State of Delaware and was executed by the
President and attested by the Secretary of Penhall International, Inc., under
its corporate seal in accordance with Section 103 of the General Corporation Law
of the State of Delaware.

     2.  The foregoing Merger Agreement was submitted to the holders of the
Common Stock of Penhall International, Inc. (the only class of capital stock
which Penhall International, Inc., has outstanding) at a meeting thereof duly
called for the purpose of acting on the Merger Agreement, and at said meeting
more than a majority of the votes which the holders of all of the outstanding
shares of Common Stock of Penhall International, Inc., were entitled to cast
thereon were cast for the adoption of the Merger Agreement.

     IN WITNESS WHEREOF, I have executed this Certificate as the __ day of
September, 1995.

[CORPORATE SEAL]                    ___________________________________
                                    Charles Steichen, Secretary

                                      -43-
<PAGE>
 
                             OFFICER'S CERTIFICATE
                                        
     I, Edah Keating, Secretary of Penhall Acquisition Corporation, a Delaware
corporation, hereby certify as follows:

     1.  The foregoing MERGER AGREEMENT AND PLAN OF REORGANIZATION (the "Merger
Agreement"), dated as of July 18, 1995, among Penhall International, Inc., a
California corporation, Roger Stull, Newpark Resources, Inc., a Delaware
corporation, and Penhall Acquisition Corporation, was adopted and approved by
the Board of Directors of Penhall Acquisition Corporation in accordance with
Section 252 of the General Corporation Law of the State of Delaware and was
executed by the President and attested by the Secretary of Penhall Acquisition
Corporation under its corporate seal in accordance with Section 103 of the
General Corporation Law of the State of Delaware.

     2.  Thereafter, the foregoing Merger Agreement was approved and adopted by
the unanimous written consent of Newpark Resources, Inc., as the sole
stockholder of Penhall Acquisition Corporation.

     IN WITNESS WHEREOF, I have executed this Certificate as the __ day of
September, 1995.


[CORPORATE SEAL]                      ___________________________________
                                      Edah Keating, Secretary

                                      -44-
<PAGE>
 
                            AGREEMENT OF MERGER                      EXHIBIT 1.4
                            -------------------                      -----------
                                        
          This Agreement of Merger (the "Agreement") is entered into on
September __, 1995, by and among PENHALL ACQUISITION CORPORATION, a Delaware
corporation ("Disappearing Corporation"), PENHALL INTERNATIONAL, INC., a
California corporation ("Surviving Corporation"), and NEWPARK RESOURCES, INC., a
Delaware corporation ("Parent"), with reference to the facts set forth below.
Disappearing Corporation and Surviving Corporation are hereinafter collectively
referred to as the "Constituent Corporations".

     A.   Surviving Corporation has authorized capital stock consisting of
5,000,000 shares of Common Stock, without par value, of which 394,013 shares
have been duly issued and are now outstanding.

     B.   Disappearing Corporation has authorized capital stock consisting of
1,000 shares of Common Stock, $.01 par value, of which 1,000 shares have been
duly issued and are now outstanding.

     C.   Parent has authorized capital stock totaling 21,000,000 shares,
consisting of 20,000,000 shares of Common Stock, $.01 par value, and 1,000,000
shares of Preferred Stock, $.01 par value, of which 10,xxx,xxx shares of Common
Stock and no Preferred Stock have been duly issued and are now outstanding.

     D.   The Boards of Directors of Surviving Corporation,  Disappearing
Corporation and Parent deem it advisable and generally to the advantage and
welfare of the parties and their shareholders that Disappearing Corporation
merge into Surviving Corporation (the "Merger"), under and pursuant to the
provisions of the California General Corporation Law (the "CGCL") and the
Delaware General Corporation Law (the "DGCL"), with Surviving Corporation
continuing as the Surviving Corporation and governed by the CGCL.

     E.   The parties to this Agreement, along with the holder of 87.x% of the
outstanding capital stock of Disappearing Corporation, have entered into an
agreement captioned Merger Agreement and Plan of Reorganization (the "Merger
                    -------------------------------------------             
Agreement") dated July 18, 1995, which sets forth certain representations,
warranties and additional understandings of the parties.

     NOW, THEREFORE, in consideration of the premises and of the mutual
agreements herein contained and of the mutual benefits hereby provided, and for
the purpose of prescribing certain terms and conditions of the Merger, including
the mode of carrying the Merger into effect, and such other details and
provisions as are deemed necessary or desirable or required by California law,
the parties hereby agree as follows:

      1.   Merger.  In accordance with the provisions of this Agreement and the
           ------                                                              
applicable provisions of the CGCL and the DGCL, Disappearing Corporation shall
be merged with and into Surviving Corporation.  At the Effective Time (as
defined in Section 7 below), Surviving Corporation shall be the Surviving
Corporation and the separate existence of Disappearing Corporation shall cease.
At the Effective Time, the Surviving Corporation shall continue its corporate
existence as a California corporation and shall succeed, without further
transfer, to all

<PAGE>
 
of the rights of each Constituent Corporation and shall be subject to all of the
debts and liabilities of Disappearing Corporation in the same manner as if
Surviving Corporation had itself incurred them.

     2.   Rights of Creditors, etc.  From and after the Effective Time, all
          ------------------------                                         
rights of creditors and all liens upon the property of each of the Constituent
Corporations shall be preserved unimpaired, provided that such liens upon
property of Disappearing Corporation shall be limited to the property affected
thereby immediately prior to the Effective Time.  Any action or proceeding
pending by or against Disappearing Corporation may be prosecuted to judgment,
which shall bind Surviving Corporation, or Surviving Corporation may be
proceeded against or substituted in its place.

     3.   Articles of Incorporation of Surviving Corporation.  At the Effective
          --------------------------------------------------                   
Time, the Articles of Incorporation of Surviving Corporation, as existing and
constituted immediately prior to the Effective Time, shall be the Articles of
Incorporation of Surviving Corporation.

     4.   By-Laws of Surviving Corporation.  At the Effective Time, the Bylaws
          --------------------------------                                    
of Surviving Corporation, as existing and constituted immediately prior to the
Effective Time, shall be the Bylaws of Surviving Corporation.
 
     5.   Board of Directors of Surviving Corporation.  At the Effective Time,
          -------------------------------------------                         
the members of the Board of Directors of Surviving Corporation holding office
immediately prior to the Effective Time shall be the members of the Board of
Directors of Surviving Corporation.

     6.   Officers of the Surviving Corporation.  At the Effective Time, all
          -------------------------------------                             
persons who hold offices of Surviving Corporation shall continue to hold the
same offices of the Surviving Corporation.

     7.   Filing; Effective Time.  The Merger shall become effective when an
          ----------------------                                            
original or copy of this Agreement, to which is attached an officer's
certificate of each of the Constituent Corporations conforming to the
requirements of Section 1103 of the GCL, has been filed in the office of the
California Secretary of State, and a Certificate Merger conforming to the
requirements of Section 252 of the DGCL has been filed in the office of the
Delaware Secretary of State.  The time and date at which the Merger so becomes
effective is referred to herein as the "Effective Time".

     8.   Conversion of Shares at the Effective Time.
          ------------------------------------------ 

          (a) Each share of Common Stock of Surviving Corporation that is issued
and outstanding immediately prior to the Effective Time shall by virtue of the
Merger be converted into 9.229043 shares of Common Stock of Parent, without any
further action on the part of the holder thereof.  Cash will be paid in lieu of
fractional shares.  From and after the Effective Time, each holder of shares of
Common Stock of Surviving Corporation shall be entitled to receive, upon
surrender to Parent of the certificate or certificates representing such shares,
one or more

                                      -2-
<PAGE>
 
certificates representing the Common Stock of Parent into which such shares have
been converted.

          (b) Each share of Common Stock of Disappearing Corporation that is
issued and outstanding immediately prior to the Effective Time shall by virtue
of the Merger be converted into one (1) newly issued share of Common Stock of
Surviving Corporation.  From and after the Effective Time, Parent, as the sole
shareholder of Disappearing Corporation, shall be entitled to receive, upon
surrender to Surviving Corporation of the certificate or certificates
representing such shares, one or more certificates representing the Common Stock
of Surviving Corporation into which such shares have been converted.
 
     9.   Entire Agreement.  This Agreement and the Merger Agreement, taken
          ----------------                                                 
together, contain the entire agreement of the parties and supersede any prior
written or oral agreements among them concerning the subject matter hereof.

     IN WITNESS WHEREOF each of the Constituent Corporations and Parent,
pursuant to authority duly granted by its Board of Directors, has caused this
Agreement to be executed by its duly authorized officers whose signatures appear
below.

"Disappearing Corporation"            "Surviving Corporation"

PENHALL ACQUISITION CORPORATION,      PENHALL INTERNATIONAL, INC.,
a Delaware corporation                a California corporation


By:___________________________        By:__________________________________
  James D. Cole, President              Roger Stull, President

By:___________________________        By:__________________________________
  Edah Keating, Secretary               Charles Steichen, Secretary

"Parent"

NEWPARK RESOURCES, INC., a Delaware
corporation

By:____________________________
  James D. Cole, President

By:____________________________
  Edah Keating, Secretary

                                      -3-
<PAGE>
 
                             CERTIFICATE OF MERGER                Exhibit 1.4(a)
                             ---------------------                --------------
                                      OF
                        PENHALL ACQUISITION CORPORATION
                        -------------------------------
                            a Delaware corporation
                                     into
                          PENHALL INTERNATIONAL, INC.
                          ---------------------------
                           a California corporation
                                        

     The undersigned hereby certifies that:

     1.   The name and state of incorporation of each of the constituent
corporations are:

          (a) Penhall Acquisition Corporation, a Delaware corporation, which
shall be the disappearing corporation (the "Disappearing Corporation"); and

          (b) Penhall International, Inc., a California corporation, which shall
be the surviving corporation (the "Surviving Corporation").

     2.   An Agreement of Merger has been approved, adopted, certified, executed
and acknowledged by the Disappearing Corporation and the Surviving Corporation
in accordance with the provisions of Section 252 of the Delaware General
Corporation Law and in accordance with the provisions of Sections 1101 and 1108
of the California General Corporation Law.

     3.   The Articles of Incorporation of the Surviving Corporation shall be
its Articles of Incorporation.

     4.   The name of the Surviving Corporation shall be Penhall International,
Inc.

     5.   The executed Agreement of Merger is on file at the principal place of
business of the Surviving Corporation at 1801 Penhall Way, Anaheim, California
92803.

     6.   A copy of the Agreement of Merger will be furnished by the Surviving
Corporation, on request and without cost, to any stockholder of the Disappearing
Corporation or the Surviving Corporation.

     7.   The Surviving Corporation hereby agrees that it may be served with
process in the State of Delaware in any proceeding for enforcement of any
obligation of the Disappearing Corporation, as well as for the enforcement of
any obligation of the Surviving Corporation arising from the merger of the
Surviving Corporation and the Disappearing Corporation, including any suit or
other proceeding to enforce the right of any stockholders as determined in
appraisal proceedings pursuant to the provisions of Section 262 of the Delaware
General Corporation Law and hereby irrevocably appoints the Secretary of State
of the State of Delaware as its agent to accept service of process in any such
suit or other proceedings.  A copy of any such process may

<PAGE>
 
be mailed by the Secretary of State to the Surviving Corporation at 1801
Penhall Way, Anaheim, California 92803.


          IN WITNESS WHEREOF, the Surviving Corporation has caused this
certificate to be signed by Roger Stull, its President, and attested by Charles
Steichen, its Secretary, on this ___ day of September, 1995.

                                         PENHALL INTERNATIONAL, INC.
Attest:                                  a California corporation



By:_______________________________       By:__________________________________
  Charles Steichen, Secretary                       Roger Stull, President

                                      -2-

<PAGE>
 
LETTERHEAD OF NEWPARK RESOURCES, INC.

FOR IMMEDIATE RELEASE

               NEWPARK RESOURCES ANNOUNCES AGREEMENT TO ACQUIRE
                          PENHALL INTERNATIONAL, INC.

METAIRE, LA.  July 18, 1995 ... Newpark Resources, Inc. (NASDAQ:NPRS), a 
supplier of integrated environmental and oilfield services to the oil and gas 
exploration and production industry, today announced the signing of a definitive
merger agreement with privately held Penhall International, Inc., of Anaheim, 
California. Penhall provides integrated specialty services to industrial 
customers in California, Nevada, Arizona and Texas. These services include 
specialized diamond cutting, grinding, safety grooving, breaking, excavation, 
removal and recycling of concrete.

Under the merger agreement, which is subject to approval by the stockholders of 
both companies, Penhall will become a wholly-owned subsidiary of Newpark, and 
the former shareholders of Penhall will receive 3,636,363 shares of Newpark 
common stock.

On a calendar year-equivalent basis, Penhall's fully taxed net income in 1994 
totaled $5.5 million on revenues of $77.6 million. For the same period, Newpark 
reported net income of $9.4 million, or $.95 per share, which was untaxed due to
the utilization of tax loss carryforwards, on revenues of $79.6 million. On a 
pro forma basis, combined revenues of Newpark and Penhall would have been $157.2
million, and combined net income would have been $12.9 million, equal to $.95 
per share, based on 13.6 million shares of Newpark common stock to be 
outstanding after the merger. This combined net income includes a $2 million 
increase in tax provision based upon the accelerated use of Newpark's net 
operating loss carryforwards as a result of the combination.

The demand for Penhall's specialized services, which it provides for both 
private and public sector projects, is stimulated by changing population trends,
increasing safety regulations, plant redevelopment and expansion, aging and 
obsolescence of facilities and natural disasters and emergencies. For example, 
Penhall played a visible role in the removal of collapsed sections of the Nimitz
freeway in San Francisco following the 1989 earthquake and in reopening the 
freeways in Los Angeles following the 1994 earthquake.

<PAGE>
 
"In addition to both companies continuing to operate and expand their businesses
after the merger," James D. Cole, Newpark's president and CEO, stated, "there 
will be opportunities for Penhall to market Newpark's integrated environmental 
services to its customers for the removal and treatment of certain waste streams
encountered at their customers' facilities." He added that the companies also 
intend to investigate fully the practicality of providing joint integrated 
environmental services to the nonhazardous industrial waste market by combining 
Penhall's customer base, trained personnel and equipment with Newpark's waste 
processing and disposal capabilities.

Cole noted that Newpark has already begun to serve customers in markets outside 
the oil and gas industry with its proprietary prefabricated mat services, such 
as providing site access in environmentally sensitive wetlands for construction 
of pipelines, power stations and highways. "There are clear synergies between 
the two companies that we will exploit, but for now it is sufficient that the 
transaction be viewed as providing important diversification and growth 
potential for both, while strengthening the combined company's revenues, 
earnings and cash flow," Cole concluded.

For further information, contact:

Company                                     New York
- -------                                     --------
Matthew W. Hardey                           Ron Hengen
Vice President of Finance                   R.F. Hengen, Inc.
Newpark Resources, Inc.                     47 Maple Street
II Lakeway Center, Suite 1770               Summit, NJ 07901
3850 North Causeway Blvd.                   (908) 277-1311
Metaire, LA. 70002
(504) 838-8222


<PAGE>
 
Selected Statement of Income Data
- ---------------------------------
(In thousands, except per share data)

<TABLE> 
<CAPTION>                                                               3 months   3 months
                                     Year Ended  Year Ended Year Ended    ended      ended
                                      12/31/94    12/31/93   12/31/92    3/31/95    3/31/94
                                     ----------  ---------- ----------  --------   --------
<S>                                  <C>         <C>        <C>         <C>        <C> 
NEWPARK - Post Merger (A)

Revenues                              $157,257    $109,924    $93,112    $37,569    $38,788

Income from continuing operations       12,853       7,290      7,659      3,410      2,739

Income per common share:

  Continuing operations               $   0.95    $   0.57    $  0.60    $  0.25    $  0.20

NEWPARK RESOURCES, INC.
 (As previously reported)

Revenues                              $ 79,632    $ 56,330    $49,457    $22,209    $17,146

Income from continuing operations        9,394       4,788      4,081      2,490      1,740

Income per common share:

  Continuing operations               $   0.95    $   0.52    $  0.45    $  0.25    $  0.18

PENHALL INTERNATIONAL, INC. -
 Historical (B)

Revenues                              $ 77,625    $ 53,594    $43,655    $15,360(D) $21,642

Income from continuing operations        5,494       1,652      1,425      1,140(D)   1,379
</TABLE> 


Selected Balance Sheet Data at March 31, 1995
- ---------------------------------------------
(In thousands)
<TABLE> 
<CAPTION> 
                                                  Newpark
                                     Newpark   as previously   Penhall
                                   Post Merger    reported    Historical
                                   ----------- -------------  ----------
<S>                                <C>         <C>            <C> 
Working capital                     $ 23,734      $ 16,666     $ 7,068

Property, plant & equipment (net)     91,079        68,318      22,761   

Total assets                         154,155       114,386      39,022

Short-term debt                        8,570         8,566           4

Long-term debt                        34,192        30,110       4,082

Stockholder's equity(C)               93,273        66,488      26,038
</TABLE> 
- --------------
Notes:  (A)   The pro forma financial data gives effect to the merger on a 
              pooling-of-interest basis for all periods presented.

              Income from continuing operations has been adjusted to reflect the
              income tax attributes of certain net operating loss carryforwards
              of Newpark recognized in earlier periods than had been previously
              reported. Additional income tax provisions of $2,035,000, $220,000
              and $380,000 were recognized for the year ended 12/31/94, and the
              three month periods ended 3/31/95 and 3/31/94, respectively. An
              income tax benefit of $850,000 was recognized in both of the years
              ended 12/31/93 and 12/31/92.

        (B)   For all periods presented Penhall recorded a full income tax 
              provision.

        (C)   The combined shareholder's equity has been adjusted to reflect the
              cumulative effect of the tax benefits and provisions recognized on
              the combined company's income.

        (D)   Results of operations of Penhall for the three months ended March 
              31, 1995 were adversely affected by record rainfall in the
              southwest.




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