Certification pursuant to Section 906                               Exhibit 99.1

                            CERTIFICATION PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
                            (18 U.S.C. SECTION 1350)*

         In connection with the Annual Report of Martin Midstream Partners L.P.,
a Delaware limited partnership (the "Partnership"), on Form 10-K for the year
ending December 31, 2002 as filed with the Securities and Exchange Commission
(the "Report"), I, Ruben S. Martin, President and Chief Executive Officer of
Martin Midstream GP LLC, the general partner of the Partnership, certify,
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section
1350), that to my knowledge:

         (1)      the Report fully complies with the requirements of Section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

         (2)      the information contained in the Report fairly presents, in
                  all material respects, the financial condition and result of
                  operations of the Partnership.

                   /s/ RUBEN S. MARTIN
                  ------------------------------------------------------
         By:      Ruben S. Martin, President and Chief Executive Officer
                  of Martin Midstream GP LLC,
                  the general partner of Martin Midstream Partners L.P.

         March 25, 2003

* A signed original of this written statement required by Section 906 has been
provided to Martin Midstream Partners L.P. (the "Partnership") and will be
retained by the Partnership and furnished to the Securities and Exchange
Commission or its staff upon request.