EXHIBIT 10.21.1
                           
                           
                           
                           SECOND AMENDMENT AND SUPPLEMENT
                                 TO CREDIT AGREEMENT


               This  Second  Amendment  and  Supplement to Credit Agreement
          (herein called the "Second Amendment")  is dated and effective as
          of  March  5,  1996,  by  and  among NEWPARK RESOURCES,  INC.,  a
          Delaware corporation (the "Borrower"), SOLOCO L.L.C., a Louisiana
          limited liability company and the  successor by merger to SOLOCO,
          Inc. ("SOLOCO L.L.C."), NEWPARK SHIPHOLDING  TEXAS, L.P., a Texas
          limited partnership ("Newpark Shipholding"), SOLOCO  TEXAS, L.P.,
          a Texas limited partnership ("SOLOCO Texas"), BATSON-MILL,  L.P.,
          a Texas limited partnership ("Batson"), MALLARD & MALLARD OF LA.,
          INC., a Louisiana corporation ("Mallard"), NEWPARK TEXAS, L.L.C.,
          a  Louisiana limited liability company ("Newpark Texas"), NEWPARK
          HOLDINGS,  INC.,  a  Louisiana  corporation ("Holdings"), NEWPARK
          ENVIRONMENTAL  SERVICES, L.L.C., a  Louisiana  limited  liability
          company and the  successor  by  merger  to  Newpark Environmental
          Services,    Inc.    ("Environmental   L.L.C."),   and    NEWPARK
          ENVIRONMENTAL  SERVICES,   L.P.,   a  Texas  limited  partnership
          ("Environmental L.P."; SOLOCO L.L.C., Newpark Shipholding, SOLOCO
          Texas,  Batson, Mallard, Newpark Texas,  Holdings,  Environmental
          L.L.C. and  Environmental L.P. are herein collectively called the
          "Guarantors"),  and HIBERNIA NATIONAL BANK ("Hibernia"), BANK ONE
          TEXAS, N.A. ("Bank  One"), and PREMIER BANK, NATIONAL ASSOCIATION
          ("Premier") (Hibernia,  Bank  One,  and  Premier  are hereinafter
          referred  to  individually  as  "Bank"  and collectively  as  the
          "Banks"), and PREMIER BANK, NATIONAL ASSOCIATION as agent for the
          Banks (hereinafter in such capacity referred to as the "Agent").

               RECITALS:

               1.   The  Borrower,  the  Guarantors  (except  Environmental
          L.L.C.  and Environmental L.P.), Newpark Environmental  Services,
          Inc., Newpark  Environmental  Water Services, Inc., SOLOCO, Inc.,
          the  Banks,  and the Agent are parties  to  that  certain  Credit
          Agreement dated  as  of June 29, 1995, as amended and modified by
          letter agreements thereto  dated  October  9, 1995 and January 8,
          1996 (the said letter agreements are herein  referred  to  as the
          "First  Amendment").   The  Credit  Agreement,  as amended by the
          First Amendment, is herein referred to as the Credit Agreement.

               2.   The Credit Agreement provides for (i) a  revolving Line
          of  Credit  in  the aggregate principal amount of $25,000,000.00,
          subject however,  to  a  Line  of  Credit Borrowing Base limit of
          $22,500,000.00 less issued and outstanding letters of credit, and
          (ii)   a  Term  Loan  in  the  aggregate  principal   amount   of
          $25,000,000.00.

               3.   Subsequent  to  the  execution of the Credit Agreement,
          the  following  mergers and transfer  of  operations  and  assets
          occurred:  SOLOCO,  Inc.  was  merged into SOLOCO L.L.C.; Newpark
          Environmental   Water  Services, Inc.  was  merged  into  Newpark
          Environmental Services,  Inc.;  Newpark  Environmental  Services,
          Inc.  was  then  merged  into Environmental L.L.C.; and the Texas
          operations and assets of Environmental L.L.C. were contributed to
          Environmental L.P.

               4.   Each of SOLOCO,  Inc.,  Newpark Environmental Services,
          Inc.,  and  Newpark  Environmental  Water   Services,  Inc.  were
          Guarantors under the Credit Agreement.

               5.   The Borrower and the Guarantors have requested that the
          Banks   (i)  increase  the  Term  Loan  from  $25,000,000.00   to
          $35,000,000.00  and (ii) revise the Line of Credit Borrowing Base
          so  that  the Line  of  Credit  Borrowing  Base  equals  Eligible
          Receivables times eighty percent (80%) plus Batson's inventory of
          lumber and  logs on which the Banks have a first ranking security
          interest times  fifty  percent (50%), up to the maximum amount of
          $25,000,000.00 less the sum of the face amount of all outstanding
          letters of credit issued under the Line of Credit Borrowing Base;
          provided, however, the aggregate amount of all advances under the
          Line of Credit based upon  Batson's  inventory of lumber and logs
          times fifty percent (50%) shall not exceed $4,000,000.00.

               6.   The  Banks  are  willing to accommodate  the  aforesaid
          requests, subject to the following  conditions  and requirements:
          (i)  the  execution of this Second Amendment for the  purpose  of
          evidencing  (a)  the Term Loan increase of $10,000,000.00 and the
          revision to the calculation of the Line of Credit Borrowing Base,
          (b) a revision of Section 8.06 of the Credit Agreement to reflect
          the revised calculation  of  the  Line  of Credit Borrowing Base,
          (c) an additional limitation on advances and borrowings under the
          Line of Credit to reflect that no more than  twenty percent (20%)
          of the outstanding balance at any particular time  under the Line
          of  Credit  can  be dependent on Eligible Receivables owed  by  a
          single  account  debtor,   and   (d)   all   other  necessary  or
          contemplated  changes;  (ii)  the  execution by the  Borrower  of
          additional Term Notes in the aggregate  amount of $10,000,000.00;
          (iii)  the execution by the Borrower and the  Guarantors  of  new
          Continuing  Guaranty agreements in favor of the Agent for the pro
          rata benefit  of  the  Banks in the amount of $60,000,000.00 plus
          interest, costs, and attorney's fees; (iv) the execution of UCC-3
          financing  statement  amendments  to  evidence  the  mergers  and
          transfer  of operations  and  assets  mentioned  above;  (v)  the
          execution of Security Agreements and Financing Statements by each
          of Environmental  L.L.C.  and  Environmental L.P. in favor of the
          Agent for the pro rata benefit of  the  Banks,  and affecting all
          accounts, general intangibles, inventory, equipment,  and deposit
          accounts;  (vi)  the  execution  by  the  Borrower, SOLOCO Texas,
          Mallard, SOLOCO L.L.C., and Batson of amendments  to the Security
          Agreements dated June 29, 1995 executed by each of  the aforesaid
          parties  in favor of  the Agent for the pro rata benefit  of  the
          Banks, to  make  it  clear that the indebtedness arising under or
          pursuant to the Credit  Agreement,  as  amended  by  this  Second
          Amendment,  continues  to  be secured by the Security Agreements;
          and (vii) payment of a facility  fee  in  the  amount of .375% of
          $12,500,000.00,  by the Borrower to the Agent for  the  pro  rata
          benefit of Premier and Hibernia.

               7.   Under the Credit Agreement the present Ratable Share of
          each of the Banks  in  the  Line  of  Credit  and Term Loan is as
          follows:  Premier - 40%; Hibernia - 30%; and Bank One - 30%.

               8.   Subsequent  to  the execution of the Credit  Agreement,
          Premier became part of the Banc One Corporation family of banks.

               9.   Premier and Bank  One  have  agreed  that  Premier will
          purchase  from  Bank  One  and  Bank  One will sell, assign,  and
          transfer to Premier:  (i) Bank One's obligation to make loans and
          advances under the Line of Credit, the  existing  indebtedness of
          the  Borrower to Bank One under Bank One's Revolving  Note  dated
          June 29, 1995 in the face amount of $7,500,000.00, and Bank One's
          unfunded  liabilities  associated  with  outstanding  letters  of
          credit  issued  under  the Credit Agreement, to be effective upon
          execution of this Second  Amendment; and (ii) the indebtedness of
          the Borrower to Bank One under  Bank  One's  Term Note dated June
          29, 1995 in the face amount of $7,500,000.00,  to be effective on
          December 20, 1996.

               10.  The Term Loan increase of $10,000,000.00 will be funded
          70% by Premier and 30% by Hibernia.

               11.  Upon  the  execution  of  this  Second  Amendment,  the
          Ratable Share of each of the Banks in the Line of Credit and Term
          Loan (as increased) will be:  Premier - 57-1/2%; Bank  One  - 12-
          1/2%;  and  Hibernia - 30%.   On December 20, 1996, the effective
          date of the transaction between Premier and Bank One discussed in
          part (ii) of RECITAL 9 above, Bank  One will no longer be a party
          to the Credit Agreement, and the Ratable  Share  of  Premier  and
          Hibernia  in the Line of Credit and Term Loan (as increased) will
          be:  Premier - 70%; and Hibernia - 30%.

               12.  All  capitalized  terms used herein are used as defined
          in the Credit Agreement, except  as  otherwise expressly provided
          in this Second Amendment.

               NOW THEREFORE, in consideration of the premises, the parties
          hereto do hereby amend and supplement  the  Credit Agreement, and
          agree and obligate themselves as follows:

                    A.   RATABLE  SHARE  REVISION.   The second  and  third
          sentences  in  the  second  paragraph  on page 1  of  the  Credit
          Agreement are hereby deleted and replaced with the following:

                    Notwithstanding    any    provision    herein
                    contained   to  the  contrary,   the   Banks'
                    agreement is  limited to the Ratable Share of
                    each Bank in the  Line of Credit and the Term
                    Loan.  The term "Ratable  Share"  shall mean:
                    (i) from June 29, 1995 through March 4, 1996,
                    in the case of Premier, 40%, in the  case  of
                    Hibernia,  30%,  and in the case of Bank One,
                    30%; (ii) from March 5, 1996 through December
                    19, 1996, in the case of Premier, 57-1/2%, in
                    the case of Hibernia, 30%, and in the case of
                    Bank  One,  12-1/2%;   and   (iii)  effective
                    December  20, 1996, in the case  of  Premier,
                    70%, and in  the  case  of Hibernia, 30%.  In
                    addition, the parties hereto agree that as of
                    March  5,  1996, the Line of  Credit  Ratable
                    Share is as  follows: Premier - 70%, Hibernia
                    - 30%, and Bank  One  - 0%.  The Borrower and
                    the Guarantors hereby acknowledge and consent
                    to the transactions described  in  RECITAL  9
                    above, and agree that Bank One is no longer a
                    party  to  the  Line of Credit and that as of
                    December 20, 1996,  Bank  One shall no longer
                    be a party to this Agreement.

                    B.   LINE OF CREDIT REVISIONS.   Section  1.01  of  the
          Credit  Agreement  is hereby deleted in its entirety and replaced
          with the following:

                         1.01    Revolving    Line    of   Credit
                    Commitment.    Subject   to   the  terms  and
                    conditions  of  this  Agreement, Premier  and
                    Hibernia agree to continue  the establishment
                    in favor of the Borrower of a  revolving line
                    of  credit in the aggregate principal  amount
                    of $25,000,000.00 (herein called the "Line of
                    Credit"), and the Borrower may request credit
                    advances  under  the  Line of Credit and make
                    borrowing   and   re-borrowings   thereunder;
                    provided, however, (a) direct advances to the
                    Borrower  shall  be  limited   to  a  maximum
                    aggregate principal amount equal  to the Line
                    of  Credit  and  (b)  the aggregate principal
                    amount outstanding under  the  Line of Credit
                    shall never exceed at any time the  lesser of
                    (i) the Line of Credit Borrowing Base or (ii)
                    $25,000,000.00.   The  Line  of  Credit shall
                    terminate on December 31, 1998 and no further
                    advances shall be made to the Borrower  after
                    such  termination  date.   The  commitment of
                    Premier and Hibernia to extend funds  to  the
                    Borrower  under the Line of Credit is limited
                    to each of their Line of Credit Ratable Share
                    of $25,000,000.00.   In addition, the Line of
                    Credit shall remain subject  to a sublimit of
                    $6,500,000.00  as  provided  in Section  1.07
                    below.


                    Section 1.02 of the Credit Agreement  also  is  amended
          and supplemented to reflect that the references to Bank or  Banks
          therein shall henceforth mean Premier and Hibernia.  In addition,
          the  Borrower  and  the Guarantors acknowledge that the Revolving
          Note  dated June 25, 1995  by  the  Borrower  in  the  amount  of
          $7,500,000.00  payable  to the order of Bank One is now owned and
          held by Premier.

                    Section 1.03 of  the Credit Agreement is hereby deleted
          in its entirety and replaced with the following:

                         1.03.  Borrowing   Base.   The  Line  of
                    Credit   is  subject  to  a  borrowing   base
                    (hereinafter  referred  to  as  the  "Line of
                    Credit Borrowing Base"), calculated according
                    to the following formula:  The Line of Credit
                    Borrowing  Base  equals  Eligible Receivables
                    times  eighty  percent  (80%)  plus  Batson's
                    inventory  of lumber and logs  on  which  the
                    Banks have a  first ranking security interest
                    times fifty percent  (50%), up to the maximum
                    amount of $25,000,000.00  less the sum of the
                    face  amounts of all outstanding  letters  of
                    credit   issued  under  the  Line  of  Credit
                    Borrowing  Base;  provided,  however, (i) the
                    aggregate  amount of all advances  under  the
                    Line of Credit  based upon Batson's inventory
                    of lumber and logs  times fifty percent (50%)
                    shall not exceed $4,000,000.00  and  (ii)  no
                    more   than   twenty  percent  (20%)  of  the
                    outstanding principal  balance under the Line
                    of  Credit  can  be  dependent   on  Eligible
                    Receivables owed by a single account  debtor.
                    The  term  "Eligible  Receivables"  is herein
                    defined  as  the  Accounts Receivable of  the
                    Borrower,  Environmental   L.L.C.,   Mallard,
                    SOLOCO Texas, Batson, Environmental L.P., and
                    SOLOCO,  L.L.C.  (collectively  the "Accounts
                    Grantors"), aged less than ninety  (90)  days
                    from  the  respective  invoice  dates thereof
                    less any related company accounts,  potential
                    offsets, foreign accounts, discounts  offered
                    and  finance charges reasonably set aside  by
                    the  Agent;   provided,   however,   Eligible
                    Receivables shall not include (i) the  entire
                    current  balance of those Accounts Receivable
                    not classified  as  Major  Accounts  in which
                    twenty percent (20%) of the aggregate  of the
                    account balances owed by a particular account
                    debtor is aged ninety (90) days or more  from
                    the date of invoice, and (ii) that portion of
                    any  Major  Account  which is aged 90 days or
                    more from the date of  invoice.  Any Accounts
                    Receivable rendered ineligible due to the 20%
                    rule stated in  (i) above  shall  render  all
                    Accounts   Receivable  from  that  particular
                    account   debtor    ineligible.    The   term
                    "Accounts Receivable"  is  herein  defined as
                    the  accounts  of  Accounts Grantors now  and
                    hereafter existing which  are approved by the
                    Agent.  The term "Major Accounts"  is  herein
                    defined as those accounts owed to any of  the
                    Accounts Grantors by account debtors that are
                    major oil and industrial companies determined
                    in   the   sole  discretion  of  Premier  and
                    Hibernia to  be  Major  Accounts based on the
                    credit quality of the account  debtors.   The
                    Agent  will notify the Borrower in writing of
                    the periodic determination of Major Accounts.
                    The  Agent  reserves  the  right  to  exclude
                    accounts  that  are not Eligible Receivables.
                    If the Agent excludes  any  such  account  or
                    accounts, the Agent will provide the Borrower
                    with  written notice thereof 30 days prior to
                    exclusion  of  the  account or accounts.  Any
                    credit balances arising  from  accounts  that
                    are not Eligible Receivables will be excluded
                    from  the Line of Credit Borrowing Base.  The
                    initial  determination  of  Major Accounts is
                    attached hereto as Exhibit A.

                    Section 1.08 of the Credit Agreement  is hereby amended
          and supplemented to reflect that the outstanding letter of credit
          issued by Premier to Gray & Company, as of December  31, 1995, is
          in the amount of $2,000,000.00.

                    Sections 1.04, 1.05, 1.06, 1.10, 1.11, 1.12,  and  1.13
          of  the  Credit  Agreement are hereby amended and supplemented to
          reflect  that all references  therein  to  Bank  or  Banks  shall
          henceforth mean Hibernia and Premier.

                    C.   TERM  LOAN  REVISIONS.  Section 2.01 of the Credit
          Agreement is hereby deleted in its entirety and replaced with the
          following:

                         2.01. Term Loan Commitment.

                         (a)  Subject to the terms and conditions
                         of the Credit  Agreement,  each  of  the
                         Banks   extended  a  term  loan  to  the
                         Borrower   in  the  aggregate  principal
                         amount of $25,000,000.00  (the "Original
                         Term Loan").  The Original  Term Loan by
                         each  Bank  was  limited to each  Bank's
                         original      Ratable      Share      of
                         $25,000,000.00.   The  purpose   of  the
                         Original  Term  Loan  was  to  refinance
                         existing   indebtedness of the Borrower,
                         including indebtedness  owed to Premier.
                         The indebtedness to be refinanced by the
                         Original  Term  Loan and, as  necessary,
                         the  Line  of Credit,  is  described  in
                         Exhibit  E  attached   to   the   Credit
                         Agreement.

                         (b)   Subject to the terms and conditions  of  the
                         Credit   Agreement,   as  amended  by  the  Second
                         Amendment, Premier and  Hibernia  have  agreed  to
                         extend  an additional term loan to the Borrower in
                         the aggregate  principal  amount of $10,000,000.00
                         (the "Additional Term Loan").   Hibernia's portion
                         of  the  Additional Term Loan is $3,000,000.00  or
                         30% and Premier's portion is $7,000,000,00 or 70%.
                         The proceeds of the Additional Term are to be used
                         by  the  Borrower  to  pay  down  the  outstanding
                         balance owed under the Line of Credit.

                         (c)  All references in the Credit Agreement to the
                         Term Loan shall henceforth be deemed references to
                         both the Original  Term  Loan  and  the Additional
                         Term Loan.

                    Section 2.02 of the Credit Agreement is hereby  deleted
          in its entirety and replaced with the following:

                         2.02  Term  Notes.   Each Bank's Ratable
                    Share of the Original Term  Loan is evidenced
                    by a Term Note of the Borrower dated June 29,
                    1995,  in the principal face amount  of  such
                    Bank's  Ratable   Share   of  $25,000,000.00,
                    payable  to  the  order  of  such  Bank.   In
                    addition, the Additional Term  Loan  shall be
                    evidenced by two separate promissory notes of
                    the Borrower.  One such note shall be  in the
                    principal amount of $7,000,000.00 payable  to
                    the order of Premier and the other note shall
                    be  in  the principal amount of $3,000,000.00
                    payable to  the  order  of Hibernia.  Each of
                    the  notes  evidencing  a  portion   of   the
                    Original  Term  Loan and Additional Term Loan
                    will be or are payable  in  monthly  interest
                    installments  and  seventeen  equal quarterly
                    principal payments commencing March  31, 1996
                    and continuing each quarter thereafter with a
                    final    eighteenth    quarterly    principal
                    installment  on June 30, 2000, at which  time
                    the final quarterly  principal  payment shall
                    be due, together with all accrued  and unpaid
                    interest (singly, a "Term Note"; collectively
                    the  "Term  Notes").    Notwithstanding   the
                    foregoing,   the   Borrower  understands  and
                    agrees that the Term  Notes  shall be due and
                    payable on December 31, 1998 if  the  Line of
                    Credit is not renewed on or before such  date
                    by   Premier  and  Hibernia.   The  quarterly
                    principal  payments  will  be  in  an  amount
                    necessary  to  amortize  the principal amount
                    thereof  over  a five year period  commencing
                    June 29, 1995.   The interest rate applicable
                    to the Term Notes  shall  be at the option of
                    the Borrower, either the Prime  Rate  or  the
                    LIBOR  Rate  plus  2.25%,  as  such  term  is
                    defined in Section 3.01 below, subject to any
                    applicable  rate  adjustment  as  provided in
                    Section 3.02(e) below.  All references in the
                    Credit Agreement to a Term Note or  the  Term
                    Notes  shall  henceforth be deemed references
                    to a note or the  notes  evidencing  both the
                    Original  Term  Loan and the Additional  Term
                    Loan.

                    Section 2.03 of the  Credit Agreement is hereby amended
          and supplemented to include the  payment of a facility fee in the
          amount of .375% of the $12,500,000.00  payable by the Borrower to
          the Agent for the pro rata benefit of Premier and Hibernia.

                    D.   REVISIONS TO SECURITY INTERESTS; GUARANTEES.

                    The Borrower and the Guarantors  do  hereby confirm all
          prior grants of mortgages and security interests  granted by them
          as  described  in  Section  4.01  of  the  Credit Agreement.   To
          evidence the agreement of the parties concerning the execution of
          new  Continuing  Guaranty  agreements,  amendments   to  Security
          Agreements,  and  the  execution  of  a  Security  Agreement  and
          Financing   Statement   by  each  of  Environmental  L.L.C.   and
          Environmental L.P., subparagraphs (a) and (b) of Section 4.01 the
          Credit  Agreement  are  hereby  deleted  and  replaced  with  the
          following:

                         (a). Security  Agreement  and  Financing
                              Statement  executed  on  and  dated
                              June   29,  1995  by  each  of  the
                              Borrower,   SOLOCO,  Inc.,  Newpark
                              Environmental    Services,    Inc.,
                              Newpark     Environmental     Water
                              Services,   Inc.,   SOLOCO   Texas,
                              Mallard,  SOLOCO L.L.C., and Batson
                              in favor of  the  Agent for the pro
                              rata benefit of the Banks affecting
                              all accounts, general  intangibles,
                              equipment,  and  inventory  of  the
                              said   parties,  whether   now   or
                              hereafter  existing,  together with
                              all proceeds therefrom,  as amended
                              by   First  Amendment  to  Security
                              Agreement  dated  March  5, 1996 by
                              each   of   the  Borrower  and  the
                              Account      Grantors;     Security
                              Agreement and  Financing  Statement
                              by each of Environmental L.L.C. and
                              Environmental L.P. in favor  of the
                              Agent  for the pro rata benefit  of
                              the Banks  affecting  all accounts,
                              general intangibles, equipment, and
                              inventory, whether now or hereafter
                              existing,    together   with    all
                              proceeds therefrom; which foregoing
                              documents shall  constitute a first
                              ranking lien and security  interest
                              affecting  the aforesaid collateral
                              except  with  respect  to  existing
                              liens  securing   indebtedness  set
                              forth  on  Exhibit  "G"   or  liens
                              permitted by the Banks;

                         (b). Continuing  Guaranty agreements  in
                              the amount of  $60,000,000.00 (plus
                              interest,  costs,   and  attorney's
                              fees) by each of the  Borrower  and
                              the  Guarantors  in  favor  of  the
                              Agent  for  the pro rata benefit of
                              the Banks;

                    The Guarantors confirm  the acknowledgment contained in
          Section 4.02 of the Credit Agreement.

                    E.   REVISION   TO  REPRESENTATIONS   AND   WARRANTIES.
          Section  5.14  of the Credit  Agreement  is  hereby  deleted  and
          replaced with the following:

                         5.14.  Generation  of  Accounts.   As  of March 5,
                    1996,  the  only  subsidiaries  and  affiliates of  the
                    Borrower generating accounts are SOLOCO  Texas,  SOLOCO
                    L.L.C.,  Batson, Environmental L.L.C. and Environmental
                    L.P.

                    F.   REVISION  TO REPRESENTATIONS AND WARRANTIES BY THE
          GUARANTORS.  Section 6.06  of  the  Credit  Agreement  is  hereby
          deleted and replaced with the following:

                            6.06    Chief   Executive   Offices;   Employer
                    Identification Numbers.  The chief executive office and
                    employer  identification number of each Guarantor is as
                    shown on the  revised  Exhibit H attached to the Second
                    Amendment.

                    G.   REVISION TO FINANCIAL  COVENANTS.  Section 8.06 of
          the  Credit Agreement is hereby deleted  and  replaced  with  the
          following:

                          8.06   Debt  Service  Ratio.   The Borrower shall
                    maintain a minimum total consolidated  net  income plus
                    depreciation,   amortization   and   interest   expense
                    (adjusted  cash  flow calculated on the  trailing  four
                    quarters)  of 1.25  times  total  annual  debt  service
                    (total of all  principal  and  interest payments due in
                    one  year).   For purposes of this  calculation  annual
                    debt  service  will  also  include  the  principal  and
                    interest payments  necessary  to  repay  $23,000,000.00
                    (total available to be drawn under the Line  of  Credit
                    Borrowing   Base  less  the  $2,000,000.00  outstanding
                    letter of credit  to  Gray  & Company) over a five year
                    period at the LIBOR Rate plus  2.00% (or the applicable
                    rate  in  accordance  with  the  rate  adjustment  grid
                    attached hereto as Exhibit F).  This  covenant shall be
                    monitored  and  measured  quarterly  by the  Agent  for
                    compliance.

                    H.   AFFIRMATION  OF CREDIT AGREEMENT BY  ENVIRONMENTAL
          L.L.C.   AND  ENVIRONMENTAL  L.P.    Environmental   L.L.C.   and
          Environmental   L.P.   do  hereby  acknowledge  all  obligations,
          covenants, agreements, and  duties  imposed  on the Guarantors by
          the Credit Agreement, as amended by this Second  Amendment.   The
          said   obligations,   covenants,   agreements,   and  duties  are
          applicable  to  Environmental L.L.C. and Environmental  L.P.,  as
          Guarantors.  All  references  in  the  Credit  Agreement  to  the
          Guarantors   shall  henceforth  be  deemed  a  reference  to  the
          Guarantors as defined in the preamble to this Second Amendment.

                    I.   REVISED     BORROWING    BASE    AND    COMPLIANCE
          CERTIFICATES.  Revised Borrowing Base and Compliance Certificates
          are attached hereto as Revised Exhibits B and I.

                    J.   MISCELLANEOUS PROVISIONS.

                         1.   The Borrower agrees that nothing contained in
          this Second Amendment shall constitute a novation.

                         2.   In consideration  of  the Bank's execution of
          this Second Amendment, the Borrower and the  Guarantors do hereby
          irrevocably waive any and all claims and/or defenses  to  payment
          on  the  indebtedness  owed  by any of them to the Banks that may
          exist as of the date of execution of this Second Amendment.

                         3.   The  Credit   Agreement,   as   amended   and
          supplemented  by  this  Second  Amendment, is hereby ratified and
          confirmed.

                         4.  THE INTERNAL LAWS  OF  THE  STATE OF LOUISIANA
          AND OF THE UNITED STATES OF AMERICA SHALL GOVERN  THE  RIGHTS AND
          DUTIES  OF  THE  PARTIES  HERETO  AND THE VALIDITY, CONSTRUCTION,
          ENFORCEMENT,  AND INTERPRETATION OF  THE  CREDIT  AGREEMENT,  THE
          SECOND AMENDMENT,   AND  ALL  LOAN  PAPERS EXECUTED IN CONNECTION
          THEREWITH EXCEPT TO THE EXTENT OTHERWISE  SPECIFIED IN THE CREDIT
          AGREEMENT, AS AMENDED BY THIS SECOND AMENDMENT,  OR IN ANY OF THE
          RELATED LOAN PAPERS.

                         5.   THE   CREDIT   AGREEMENT   AND  THIS   SECOND
          AMENDMENT ARE CREDIT OR LOAN AGREEMENTS AS DESCRIBED  IN LA. R.S.
          6:  Section  1121,  ET.  SEQ.   THERE ARE  NO  ORAL    AGREEMENTS
          BETWEEN  THE BANKS AND THE BORROWER.

                         6.   THE CREDIT  AGREEMENT,  AS  AMENDED  BY  THIS
          SECOND  AMENDMENT, SETS FORTH THE ENTIRE AGREEMENT OF THE PARTIES
          WITH RESPECT  TO  THE  SUBJECT  MATTER  HEREOF AND SUPERSEDES ALL
          PRIOR WRITTEN AND ORAL UNDERSTANDINGS BETWEEN  THE  BORROWER  AND
          THE GUARANTORS ON ONE HAND, AND THE BANKS AND/OR THE AGENT ON THE
          OTHER  HAND,  WITH  RESPECT TO THE MATTERS HEREIN SET FORTH.  THE
          CREDIT AGREEMENT, AS AMENDED BY THIS SECOND AMENDMENT, MAY NOT BE
          MODIFIED OR AMENDED EXCEPT  BY  A WRITING SIGNED AND DELIVERED BY
          THE BORROWER, THE GUARANTORS, THE  BANKS,  AND  THE AGENT.  THERE
          ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

                         7.   IN THE EVENT IT IS NECESSARY  FOR  THE  AGENT
          AND/OR THE BANK TO RESORT TO JUDICIAL ACTION TO ENFORCE ITS/THEIR
          RIGHTS  HEREUNDER,  THEN THE BORROWER AND GUARANTORS HEREBY AGREE
          THAT TO THE EXTENT PERMITTED  BY APPLICABLE LAW ANY SUCH JUDICIAL
          ACTION, INCLUDING ANY OPPOSITION  TO  SUCH ACTION, RECONVENTIONAL
          DEMANDS, AND CROSS CLAIMS, SHALL BE TRIED  BEFORE A JUDGE WITHOUT
          A JURY, ALL PARTIES HERETO HEREBY WAIVING THEIR  RIGHT  TO A JURY
          TRIAL.


                                        BORROWER:

                                        NEWPARK RESOURCES, INC.

                                        BY:_____________________________
                                           MATTHEW W. HARDEY, VICE
                                           PRESIDENT OF FINANCE AND CHIEF
                                           FINANCIAL OFFICER


                                        GUARANTORS:


                                        NEWPARK ENVIRONMENTAL SERVICES,
                                        L.L.C.


                                        By:____________________________
                                           MATTHEW W. HARDEY, TREASURER


                                        NEWPARK SHIPHOLDING TEXAS, L.P.
                                        By: Newpark Holdings, Inc., as
                                            General Partner


                                        By:____________________________
                                           MATTHEW W. HARDEY,
                                           VICE PRESIDENT

                                        SOLOCO TEXAS, L.P.
                                        By: Newpark Holdings, Inc., as
                                            General Partner


                                        By:____________________________
                                           MATTHEW W. HARDEY,
                                           VICE PRESIDENT


                                        BATSON-MILL, L.P.
                                        By: Newpark Holdings, Inc., as
                                            General Partner


                                        By:____________________________
                                           MATTHEW W. HARDEY,
                                           VICE PRESIDENT


                                        NEWPARK ENVIRONMENTAL SERVICES,
                                        L.P.
                                        By: Newpark Holdings, Inc., as
                                           General Partner


                                        By:______________________________
                                           MATTHEW W. HARDEY,
                                           VICE PRESIDENT


                                        MALLARD & MALLARD OF LA., INC.


                                        By:____________________________
                                           MATTHEW W. HARDEY, TREASURER


                                        SOLOCO, L.L.C.

                                        By:____________________________
                                           MATTHEW W. HARDEY, TREASURER
                                        NEWPARK TEXAS, L.L.C.


                                        By:____________________________
                                           MATTHEW W. HARDEY,
                                           VICE PRESIDENT


                                        NEWPARK HOLDINGS, INC.


                                        By:____________________________
                                           MATTHEW W. HARDEY,
                                           VICE PRESIDENT


                                        BANKS:

                                        HIBERNIA NATIONAL BANK


                                        By:____________________________
                                            Title:______________________

                                        BANK ONE TEXAS, N.A.


                                        By:____________________________
                                            Title:______________________

                                        PREMIER BANK,
                                        NATIONAL ASSOCIATION


                                        By:____________________________
                                            Title: Vice President


                                        AGENT:

                                        PREMIER BANK,
                                        NATIONAL ASSOCIATION


                                        By:____________________________
                                           Title:  Vice-President


          

                                          REVISED EXHIBIT B

                                      Borrowing Base Certificate


            Borrower:         Newpark Resources, Inc.

            Date:             ______________




                                                                     
            A.    Eligible Accounts Receivable as                       $
                  Described  in  the  Credit  Agreement Between Banks, 
                  the Agent and Newpark Resources, Inc., Dated June 29, 
                  1995, as amended

            B.    Advance Rate                                                        x.80

            C.    Accounts Receivable Portion of
                  Borrowing Base (80% of "A")                           $

            D.    Eligible Batson-Mill inventory                        $

            E.    Advance Rate                                                        x.50

            F.    Inventory  Portion of Borrowing  Base (not to exceed  
                  $4,000,000.00)                                        $


            G.    Total  Collateral   Base   Available  ("C" +  "F",  
                  but  not  to  exceed $25,000,000.00)                  $

            H.    LESS:   Outstanding  Letters  of  Credit  included in  
                  borrowing  base                                       $


            I.    LESS:  Existing Line Balance                          $

            J.    Excess Net Collateral Base                            $

            K.    LESS:  Requested Draw Amount                          $



            I hereby certify that I am authorized  to  submit  this Line 
            of Credit request and Borrowing Base Certificate  on  behalf 
            of Newpark  Resources,  Inc. and that the above  information 
            is accurate and conforms to  the  terms  and  conditions set
            forth  in   the  Credit  Agreement  dated June 29, 1995,  as 
            amended, and  is  based upon the  Accounts  Receivable Aging  
            dated  __________.   The Requested Draw Amount  is  to  be a 
            __________ Prime Rate Loan or a _________ LIBOR  Loan.  If a
            LIBOR  Loan,  the  requested  Rate Period is  _____ 30 days, 
            _____ 60 days,  or _____ 90 days.

            I further certify that as of the  date hereof, no condition,  
            event, or act which,  with   or  without  notice or lapse of 
            time or both,  would  constitute  an event of default  under  
            the Restated   Credit  Agreement.  Also,  the  best  of  our
            knowledge,   Newpark Resources,  Inc.  and   the  Guarantors  
            (as  defined   in the  Credit  Agreement) have complied with 
            all provisions of the Credit  Agreement, as amended.



                                       ________________________________
                                       As Authorized Agent for Newpark
                                       Resources, Inc.



                              REVISED EXHIBIT I


                            Compliance Certificate


                                    (Date)


            Premier Bank, National Association
            P. O. Box 3248
            Lafayette, Louisiana  70502

            Attention:  Mrs. Rose M. Miller

                        Re:  Compliance Certificate


            Dear Mrs. Miller:

     This  compliance  certificate  is  submitted pursuant to Section 7.11 of
that certain Credit Agreement dated as of  June 29, 1995, as amended by letter
agreements dated October 9, 1995 and January  8, 1996, and by Second Amendment
and Supplement to Credit Agreement dated as of  March  5,  1996  (the  "Credit
Agreement"),  by  and  among  the undersigned, Newpark Environmental Services,
L.L.C., Newpark Environmental Services,  L.P., Mallard & Mallard of La., Inc.,
Newpark Shipholding Texas, L.P., SOLOCO Texas, L.P., Batson-Mill, L.P., SOLOCO
L.L.C., Newpark Texas, L.L.C., Newpark Holdings, Inc., Hibernia National Bank,
Bank  One Texas, N.A., and Premier Bank, National  Association  (individually,
and as Agent for the said Banks).

     Under the appropriate sections of the Credit Agreement, we certify that,
to the  best  of  our knowledge and belief, no condition, event, or act which,
with or without notice  or lapse of time or both, would constitute an event of
default under the terms of  the  Credit  Agreement,  has occurred during the 3
month  period ending ______________ (the "Reporting Period").   Also,  to  the
best of  our  knowledge,  the  undersigned  the  Guarantors (as defined in the
Credit Agreement) have complied with all provisions of the Credit Agreement.

     Additionally,   the   undersigned   submits   the  following   financial
information  for  the  Reporting  Period  in  accordance  with  the  covenants
contained in Section 8 of the Credit Agreement.

     Current Ratio (Section 8.01)

     Consolidated Current Assets.............................$_______________
     Consolidated Current Liabilities........................$_______________
     Current Ratio ..........................................$_______________
     Minimum Current Ratio-Allowed...........................           1.20X

     Debt Worth Ratio (Section 8.02)

     Total Consolidated Liabilities .........................$_______________
     Total Consolidated Tangible Net Worth ..................$_______________
     Ratio ..................................................$_______________
     Total Consolidated Liabilities to Total
       Consolidated Tangible Net Worth Allowed ..............            1.0X

     
     Minimum Tangible Net Worth (Section 8.03)

     Consolidated Tangible Net Worth ........................$_______________
     Annual Net Income for year ending
       _________________ ....................................$_______________
     75% of Annual Net Income ...............................$_______________
     Minimum Tangible Net Worth Required
       ($58,796,000.00 + 75% of Annual Net Income............$_______________

     Book Value of Fixed Assets (Section 8.05)

     Book Value of Fixed Assets of Borrower
       and Guarantors .......................................$_______________
       (excluding assets subject to outside
       financing)
     Outstanding Amount under Term Notes ....................$_______________

     Minimum Book Value Required ............................$1.75 X
                                                             Outstanding Term
                                                              Note Amount

     Sale of Assets (Section 8.05)

     Asset Sale for replacement purposes.....................   yes        no
     Amount .................................................$_______________
     Permitted Amount .......................................$     250,000.00
     Applied to Debt ........................................   yes        no
     
     Debt Service Ratio (Section 8.06)

     Total Consolidated Net Income Plus Depreciation
       Plus Amortization and Interest Expense................$_______________
     Total Annual Debt Service ..............................$_______________
     Ratio Required .........................................   1.25 X 1.0
                                                             (see Section 8.06 
                                                              for calculation)


                                                Sincerely,

                                                NEWPARK RESOURCES, INC.


                                                By:___________________________
                                                   Title:_____________________
                                                   Date:______________________
                                  
                                  
                                  
                                  REVISED EXHIBIT H


                              Chief Executive Office and
                           Employer Identification Numbers
                                    of Guarantors


          Mallard & Mallard of La., Inc.
          EIN 74-2062791
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          Newpark Environmental Services, L.L.C.
          EIN 72-0770718
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          Newpark Environmental Services, L.P.
          EIN 72-1312748
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          Newpark Holdings, Inc.
          EIN 72-1286594
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          Newpark Texas, L.L.C.
          EIN 72-1286789
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002



          SOLOCO, L.L.C.
          EIN 72-1286785
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          Batson-Mill, L.P.
          EIN 72-1284721
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          Newpark Shipholding Texas, L.P.
          EIN 72-1286763
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002


          SOLOCO Texas, L.P.
          EIN 72-1284720
          3850 N. Causeway Boulevard
          Suite 1770
          Metairie, LA  70002