William G. Hargett

Energen Corp. is an independent oil and natural gas company, which engages in the acquisition, development, exploration, and exploitation of onshore oil and natural gas reserves. Its portfolio includes the Permian Basin in West Texas. The company was founded on October 26, 1978 and is headquartered in Montgomery, AL.

Houston Exploration Co. provides oil and gas exploration services on growing reserves & production through the exploration, development, exploitation and acquisition of natural gas. The company is located in Houston, TX.

Santa Fe Snyder Corp. develops and produces oil and natural gas. The company is headquartered in Houston, TX.

Energen Resources Corp. engages in the exploration of oil and natural gas. The company is headquartered in Birmingham, AL.

Part of Pioneer Natural Resources Co., Greenhill Petroleum Corp explores for and produces oil. Greenhill Petroleum was acquired by Mesa, Inc. from Alumina Ltd. on April 17, 1997 for $267 million.

Part of Occidental Petroleum Corp., Anadarko OGC Co. is an American company that specializes in oil and gas production. Anadarko OGC was acquired by Union Pacific Resources, Inc. from Cyprus Amax Minerals Co. on April 04, 1994 for $819 million.