Mindy Stephens

Frontier Energy Services LLC operates a midstream energy firm. Its services include gathering, compression, processing, and treating facilities, and the marketing of natural gas and natural gas liquids. The company was founded by Dave Presley in 2002 and is headquartered in Tulsa, OK.

Part of Enbridge, Inc., CMS Field Services, Inc. gathers, processes, transports and markets natural gas and natural gas liquids. The company is based in Tulsa, OK. CMS Field Services was acquired by Cantera Resources, Inc. from CMS Energy Corp. on July 02, 2003 for $162.60 million.

Part of CMS Energy Corp., Heritage Gas Services LLC is a company that gathers, processes, and markets natural gas and natural gas liquids. The company is based in Enid, OK. Heritage Gas Services was acquired by CMS Energy Corp. on October 26, 1998. The company was founded by Dave Presley.

Part of Duke Energy Corp., Associated Natural Gas Corp. is a company that specializes in energy resource development and is a holding company. The company is based in Houston, TX. Associated Natural Gas was acquired by PanEnergy Corp. on December 16, 1994 for $591 million.

Part of Duke Energy Corp., Grand Valley Gas Co. is a natural gas distribution company. The company is based in Salt Lake City, UT. Grand Valley Gas was acquired by Associated Natural Gas Corp., part of Duke Energy Corp. from December 16, 1994 on July 01, 1994 for $50.70 million.