Thomas M. Mercer

Union Drilling, Inc. was provided contract land drilling services and equipment to oil and natural gas producers in the United States. It provided drilling services primarily to major or independent oil and natural gas producers that operate in the exploration and productions areas in the United States. The firm specialized in shallow to deep horizontal drilling in select oil and gas producing basins of the United States. The company was founded in December 1997 and was headquartered in Fort Worth, TX.

Lone Star Technologies, Inc. manufactures and markets steel tubular products. The company provides alloy and carbon welded oil tubular goods, including casing and production tubing which are used in the completion of production from oil and natural gas wells. Lone Star Technologies was founded in 1966 and is headquartered in Dallas, TX.