C. Birnie

National Coal LLC engages in mining, processing and selling bituminous steam coal in East Tennessee and North Alabama. It sells its products to electric utilities, industrial companies, and coal resellers. The firm markets its products through employees, consultants, and independent coal brokers. The company was founded in 2003 and is headquartered in Roanoke, VA.

Part of Chesapeake Energy Corp., Sapient Energy Corp is a company that explores for and produces gas and oil. The company is based in Tulsa, OK. Sapient Energy was acquired by Chesapeake Energy Corp. on December 18, 2001 for $131 million. The company was founded by Robert Anderson.

Northwestern University is a private institution founded in 1851 to serve the Northwest Territory, an area that now includes the states of Ohio, Indiana, Illinois, Michigan, Wisconsin and parts of Minnesota. Northwestern has three campuses

Oklahoma Center for the Advancement of Science & Technology is the Oklahoma's technology-based economic development agency. The company is headquartered in Oklahoma City, OK.

Cpp, Inc. is a private company based in Fort Collins, CO. The company specializes in wind engineering services, such as wind load testing, air quality, indoor and outdoor comfort, forensic, and other related services.

Strat Land Exploration Co. provides oil and gas field exploration services. The company was founded in 1980 by Larry B. Darden and is headquartered in Tulsa, OK.

New Dominion LLC is a private company based in Oklahoma City, OK and has subsidiaries in the United States. New Dominion LLC was founded by David James Chernicky. Kevin A. Easley has been the CEO of the company since 2011.

Best Well Services LLC provides oilfield services. It offers pump truck, cable shop, spooling and banding, transportation, water transfer and well site services, and workover rigs. The company was founded in 2007 and is headquartered in Tulsa, OK.