As filed with the  Securities  and  Exchange  Commission  on  November  14, 2005
                                                     Registration No. 333-118140
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                        POST-EFFECTIVE AMENDMENT NO. 1 TO

                                    FORM S-8

             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                -----------------

                             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 NORTH CAUSEWAY BOULEVARD, SUITE 1770
       METAIRIE, LOUISIANA                                         70002
(Address of principal executive offices)                         (Zip Code)

                             NEWPARK RESOURCES, INC.
                 2004 NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN
                            (Full title of the plan)

                                  JAMES D. COLE
                             CHIEF EXECUTIVE OFFICER
                             NEWPARK RESOURCES, INC.
                    3850 NORTH CAUSEWAY BOULEVARD, SUITE 1770
                            METAIRIE, LOUISIANA 70002
                     (Name and address of agent for service)

                                 (504) 838-8222
          (Telephone number, including area code, of agent for service)

                                    COPY TO:
                             HOWARD Z. BERMAN, ESQ.
                           ERVIN, COHEN & JESSUP, LLP
                       9401 WILSHIRE BOULEVARD, 9TH FLOOR
                             BEVERLY HILLS, CA 90212
                                 (310) 273-6333


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EXPLANATORY NOTE The sole purpose of this Post-Effective Amendment No. 1 is to file a corrected Consent of Independent Registered Public Accounting Firm, which is attached hereto as Exhibit 23.1. The attached Consent corrects a typographical error in the original Consent dated March 15, 2005, which was filed as Exhibit 23.1 to our Annual Report on Form 10-K for the year ended December 31, 2004. The original Consent erroneously identified Registration Statement on Form S-8 (File No. 333-118140) as having file number 333-228240. PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT ITEM 8. EXHIBITS. 4.1 Newpark Resources, Inc. 2004 Non-Employee Directors' Stock Option Plan * 5.1 Opinion of Ervin, Cohen & Jessup LLP * 23.1 Consent of Independent Registered Public Accounting Firm ** 23.2 Consent of Ervin, Cohen & Jessup LLP (included in Exhibit 5.1)* 24.1 Powers of Attorney * ----------------- * Previously filed. ** Filed herewith.

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this post-effective amendment to the registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Metairie, State of Louisiana, on November 11, 2005. NEWPARK RESOURCES, INC. By: /s/ James D. Cole ------------------------------------- James D. Cole, Chief Executive Officer Pursuant to the requirements of the Securities Act of 1933, as amended, this post-effective amendment to the registration statement has been signed by the following persons in the capacities and on the dates indicated. Signature Title Date --------- ----- ---- /s/ James D. Cole - ---------------------------------- James D. Cole Chief Executive Officer and November 11, 2005 Director (Principal Executive Officer) * - ---------------------------------- Wm. Thomas Ballantine President, Chief Operating November 11, 2005 Officer and Director /s/ Matthew W. Hardey - ---------------------------------- Matthew W. Hardey Vice President of Finance and November 11, 2005 Chief Financial Officer (Principal Financial and Accounting Officer) * - ---------------------------------- Jerry W. Box Director November 11, 2005 * - ---------------------------------- David P. Hunt Chairman of the Board November 11, 2005 * - ---------------------------------- Alan J. Kaufman Director November 11, 2005 * - ---------------------------------- James H. Stone Director November 11, 2005 S-1

* - ---------------------------------- Roger C. Stull Director November 11, 2005 * - ---------------------------------- F. Walker Tucei, Jr. Director November 11, 2005 By: /s/ Matthew W. Hardey ---------------------- Matthew W. Hardey Attorney-in-Fact S-2

                                                                    Exhibit 23.1

            Consent of Independent Registered Public Accounting Firm

We consent to the  incorporation by reference in the  Registration  Statement on
Form S-8 (File No. 333-118140) of our reports dated March 15, 2005, with respect
to Newpark  Resources,  Inc.'s  consolidated  financial  statements  and Newpark
Resources, Inc. management's assessment of the effectiveness of internal control
over financial  reporting of Newpark  Resources,  Inc., and the effectiveness of
internal  control  over  financial  reporting,  which were  included  in Newpark
Resources,  Inc.'s  Annual  Report on Form 10-K for the year ended  December 31,
2004.

                                                           /s/ Ernst & Young LLP

New Orleans, Louisiana
November 9, 2005