Bruce A. Stewart

Radius Resources Corp. explores and develops oil and natural gas reserves. It is headquartered in Alberta, Canada.

Part of Samson Resources II LLC, Calahoo Petroleum Ltd. explores and develops oil and gas properties. The company is based in Calgary, Canada. The Canadian company was founded by Mike O'Hara. Calahoo Petroleum was acquired by Samson Canada Ltd. on June 16, 2000 for $71.58 million.

Enterra Energy Trust is an exploration and production oil and gas trust based in Calgary, Alberta, Canada with its United States operations office located in Oklahoma City, Oklahoma. Its trust units and debentures are listed on the Toronto Stock Exchange under the symbols ENT.UN, ENT.DB, ENT.DB.A and Enterra's trust units are listed on the New York Stock Exchange under the symbol ENT. The Trust portfolio of oil and gas properties is geographically diversified with producing properties located principally in Alberta, British Columbia, Saskatchewan and Oklahoma. Current production is comprised of approximately 50 percent natural gas and 50 percent crude oil and natural gas liquids.

Steen River Oil & Gas, Inc. engages in the exploration of natural gas and crude oil. The company was founded on September 3, 2003 and is headquartered in Calgary, Canada.