Thomas M. Blake

Vanguard Natural Resources LLC is an oil and natural gas exploration company, which focuses on the acquisition and development of mature long-lived natural gas and oil properties. Its properties are located in the Appalachian Basin in Kentucky and Tennessee; the Permian Basin in West Texas and New Mexico; and the Big Horn Basin in Wyoming and Montana. The company was founded in October 2006 and is headquartered in Houston, TX.

Appalachian Production Services, Inc. provides contract production management services for the natural gas and oil industry. It offers contract production operations, midstream and pipeline, drilling and completion, roustabout, construction and well management, asset evaluation, and equipment services. The company was founded by Frank Henderson in 1994 and is headquartered in Abingdon, VA.

Appalachian Energy Holdings LLC provides oilfield and coalfield services. It provides well-site support & construction, logistics, mass earth excavation, road construction, surface mine area preparation, timber hauling, equipment, and environmental solutions. The company was founded by Rebecca Paxton in 1992 and is headquartered in Charleston, WV.

Columbia Natural Resources LLC provided petroleum and natural gas. It also provided exploration, production, processing and transportation of natural gas. The company had operations in Kentucky, Ohio and Virginia. The company was founded in 1989 and was located in Charleston, WV.