EXHIBIT (23)-1- CONSENT OF INDEPENDENT AUDITORS To the partners of Unimar Company We consent to incorporation by reference in the registration statement (Post-effective amendment No. 2 on Form S-3 to Form S- 14 (No. 2-93037)) of Unimar Company of our report dated March 5, 1999, relating to the consolidated balance sheets of Unimar Company and subsidiaries as of December 31, 1998 and 1997 and the related consolidated statements of earnings, cash flows and changes in partners' capital and comprehensive income for each of the years in the three-year period ended December 31, 1998, which report appears in the December 31, 1998 annual report on Form 10- K of Unimar Company. KPMG LLP Houston, Texas March 19, 1999