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                                                                   EXHIBIT 10.10


                            PRODUCT SUPPLY AGREEMENT

This agreement is entered into on this 1st day of November 2002, between Martin
Gas Sales LLC (hereinafter referred to as "Seller") with corporate office
located at 4200 Stone Road, Kilgore, TX 75662 and Martin Operating Partnership
L.P. (hereinafter referred to as "Buyer") with corporate office located at 4200
Stone Road, Kilgore, TX 75662.

         1.       DEFINITIONS

                  1.1      "Product" shall mean 93% or 98% sulfuric acid as
                           shown in Exhibit A.

         2.       AGREEMENT TERM

                  2.1      The term (hereinafter referred to as the "Initial
                           Term") of this Agreement shall be three (3) years
                           beginning on July 1, 2002. After the Initial Term,
                           the term shall automatically renew from year to year,
                           unless either party gives written notice at least
                           thirty (30) days prior to the expiration of the
                           Initial Term or of any renewal term. If any Product
                           deliveries are made before the indicated beginning
                           date, that Product will also be covered by this
                           Agreement.

         3.       QUANTITY

                  3.1      Seller agrees to supply and Buyer agrees to purchase
                           from Seller, 100% of Buyer's Plainview, Texas plant
                           requirements, currently estimated at 8,000 tons per
                           month. Seller also recognizes that Buyer may choose
                           not to run the Plainview, Texas plant based on market
                           conditions and Seller will adjust supply depending on
                           Buyer's needs.

         4.       PRICING

                  4.1      Seller agrees to supply Buyer with Product at a price
                           equal to Seller's best available cost plus $4/short
                           ton.

                  4.2      Additionally, if Seller requires truck tons F.O.B.
                           Buyer's plant, Buyer agrees to provide tons to Seller
                           at Buyer's cost plus $4/ton.

         5.       PAYMENT TERMS

                  5.1      All invoices will be paid net thirty (30) days from
                           shipment by Seller.

         6.       SEVERABILITY

                  6.1      If any provision of this Agreement is found to be
                           illegal or unenforceable,




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                           Such provision shall be deemed not to part of this
                           Agreement and this Agreement shall continue in full
                           force and effect, but shall be interpreted to give
                           effect to the extent feasible to the original written
                           intent of the parties.

         7.       ENTIRE AGREEMENT

                  7.1      This Agreement sets forth the entire Agreement
                           between Seller and Buyer with respect to Product.
                           This Agreement supercedes and cancels all prior and
                           contemporaneous agreements and understanding between
                           the parties, whether oral or written, relating to
                           this product. Exhibit A attached hereto is made a
                           part hereof and are incorporated herein by reference.

         8.       CONTROLLING LAW

                  8.1      This Agreement shall be governed by and construed in
                           accordance with the laws of the State of Texas.

         IN WITNESS WHEREOF the duly authorized parties hereto as of the date
first set forth above have duly executed this Agreement.


MARTIN GAS SALES LLC

         By:  Martin Resource Management Corporation
         Its Sole Member

                  By:     /s/ Ruben S. Martin, III
                  Name:   Ruben S. Martin, III
                  Title:  President



MARTIN OPERATING PARTNERSHIP L.P.

By:  Martin Operating GP LLC, its general partner

         By:  Martin Resource LLC, its sole member

                  By:  Martin Resource Management Corporation, its sole member

                           By:    /s/ Ruben S. Martin, III
                           Name:  Ruben S. Martin, III
                           Title: President

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                                   EXHIBIT "A"



                             MARTIN GAS SALES, INC.
                 93% AND 98% GRADE SULFURIC ACID SPECIFICATIONS

<Table>
<Caption>
                                                               Typical                 Guaranteed Maximum
                             Element                           Analysis                       98%
                             -------                           --------                ------------------
<S>                                                           <C>                           <C>
                              H2S04                              98.5%                    97.8 - 99.5%

                              H2S04                              93.5%                    92.8 - 94.2%

                            Iron (Fe)                            15 ppm                        50 ppm

                      Sulphur Dioxide (SO(2))                   <25 ppm                        50 ppm

                            Nitrates                              5 ppm                       <50 ppm

                          Heavy Metals                           <5 ppm                        20 ppm
</Table>