William G. Laughlin

Locke Liddell & Sapp LLP provides legal services. It is a law firm with a range of clients and a national presence. The law firm represents and protects the interests in entrepreneurial companies and individuals. The company has offices in Austin, Dallas, Houston, New Orleans and Washington, DC. It has approximately 400 lawyers who represent a range of businesses and individual clients having extensive domestic and foreign business interests. The company is headquartered in Dallas, TX.

El Paso Interim Corp. provides natural gas and related energy products in a safe, efficient and dependable manner. The company owns North America's interstate natural gas pipeline systems, which provides a stable base of earnings and cash flow and has a backlog of committed expansion projects. The company operates through three segments: Pipelines, Exploration and Production & Marketing. The Pipelines segment provides natural gas transmission, storage, and related services, primarily in the USA primarily through eight wholly or majority owned interstate pipeline systems and equity interests in two transmission systems. The Exploration and Production segment is engaged in the exploration for and the acquisition, development and production of oil, natural gas and NGL, in the US, Brazil and Egypt. The Marketing segment markets on behalf of its Exploration and Production segment and manages the price risks associated with its oil and natural gas production as well as manages remaining legacy trading portfolio. The company was founded by Paul Kayser in 1928 and is headquartered in Houston, TX.

El Paso Production Co. explores natural gas and oil reserves. The company is a subsidiary of El Paso Corporation. It is located in Houston, TX.

Evergreen Energy, Inc. operates as a business intelligence and environmental solutions company. It engages to the development of accurate and reliable technologies. Its products are focused on helping customers manage the costs and operational issues. The company was founded in 1984 and is headquartered in Denver, CO.

High Sierra Energy, LP acquires, manages, and integrates businesses & revenue generating assets in the natural resources industry. The company was founded by James J. Burke, III in 2004 and is headquartered in Denver, CO.