POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that, the undersigned hereby constitutes and appoints Timothy J. Fretthold, Jerry D. King, and Lisa K. Wortham, and each of them, his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for him and in his name, place, and stead, in any and all capacities (including as an officer or director of DIAMOND SHAMROCK, INC. (the "Corporation"), to sign Post-Effective Amendment No. 1 to a Registration Statement on Form S-8 of the Corporation for the purpose of amending Registration Statement No. 33-47761, and to sign any or all further post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission granting unto said attorney or attorneys-in-fact, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney or attorneys-in-fact or any of them or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof. /S/ W. E. Bradford W. E. Bradford Dated: May 22, 1995 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that, the undersigned hereby constitutes and appoints Timothy J. Fretthold, Jerry D. King, and Lisa K. Wortham, and each of them, his true and lawful attorney or attorneys-in-fact, with full power of substitution and revocation, for him and in his name, place, and stead, in any and all capacities (including as an officer or director of DIAMOND SHAMROCK, INC. (the "Corporation"), to sign Post-Effective Amendment No. 1 to a Registration Statement on Form S-8 of the Corporation for the purpose of amending Registration Statement No. 33-47761, and to sign any or all further post-effective amendments to such Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission granting unto said attorney or attorneys- in-fact, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney or attorneys- in-fact or any of them or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof. /S/ W. H. Clark W. H. Clark Dated: May 22, 1995 W2756.LW