Joseph F. Langston

Glen Rose Petroleum Corp. explores and produces oil and natural gas. It focuses on the development of on-shore U.S. oil and gas assets. The company was founded in 1981 and is headquartered in Houston, TX.

Platina Energy Group, Inc. explores and develops oil and gas properties. The company was founded on January 19, 1988 and is headquartered in Corpus Christi, TX.

Part of Lyford Investments Enterprises Ltd, Search Exploration, Inc. is a natural gas and petroleum production company. The company is based in Dallas, TX. Search Exploration was acquired by HKN, Inc. on May 24, 1995 for $4 million.

Gale Force Petroleum, Inc. engages in the exploration, operation and development of oil and gas resources. It focuses on acquiring and exploiting underdeveloped oil and gas reserves in mature basins, bringing operational expertise and capital to lower risk, development type projects. The company was founded on May 29, 2001 and is headquartered in Toronto, Canada.

Buccaneer Energy Corp. operates as an exploration company. It engages in the exploration of oil and gas. The company is headquartered in Houston, TX.

Gold Mining USA, Inc. engages in the acquisition, expansion, and development of metallurgical and mining projects. Its portfolio includes Mt. Tymn and Tennant Creek Gold Mines and Gypsy Mine. The company was founded on April 28, 1995 and is headquartered in Las Vegas, NV.

Langston Investments, Inc. provides investment services. The private company is based in Kaufman, TX.