Kirby L. Hedrick

Noble Energy, Inc. operated as an exploration and production company. It engaged in the acquisition, exploration and development of crude oil and natural gas. The firm operated through the following geographical segments: United States, Eastern Mediterranean, West Africa, Other International and Midstream. The United States segment was consists of U.S. onshore and Gulf of Mexico. The Eastern Mediterranean segment was included Israel and Cyprus. The West Africa segment comprised of Equatorial Guinea, Cameroon, and Gabon. The Other International segment was composed of Newfoundland, Suriname, and other new ventures. The Midstream segment was owns, operates, develops, and acquires domestic midstream infrastructure assets with focus areas being the DJ and Delaware Basins. The company was founded by Lloyd Noble in 1932 and it was headquartered in Houston, TX.

Pengrowth Corp. an oil and gas operating company. The company is headquartered in Calgary, Canada.

Pengrowth Energy Trust's principal activity is to provide directly and indirectly explore for, develop and hold interests in petroleum and natural gas properties, through investments. The company directly and indirectly acquires, owns and manages working interests and royalty interests in oil and natural gas properties. Its activities are financed by issuance of royalty units and interest bearing notes to the Trust and third party debt.

Part of ConocoPhillips, GPM Gas Corp is a natural gas transmission and distribution company. The company is based in Gruver, TX.