L. B. Curtis

American Petroleum Institute (API) is the only national trade association that represents all aspects of America's oil and natural gas industry. Its more than 400 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. They are producers, refiners, suppliers, pipeline operators and marine transporters, as well as service and supply companies that support all segments of the industry.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

Eastern American Energy Corp. provides natural gas services focused on the Appalachian Basin. The company is a subsidiary of Energy Corporation of America. The company is headquartered in Charleston, WV.

Energy Corp. of America explores, extracts, produces and transport natural gas and oil. The company was founded by John Mork and Julie M. Mork in 1963 and is headquartered in Charleston, WV.