Ronald J. Barcroft

Part of Duke Energy Corp., Associated Natural Gas Corp. is a private 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.

Duke Energy Field Services (DEFS) is a midstream energy company that gathers, treats, compresses, processes, transports, markets, and stores natural gas and produces, fractionates, transports, trades, and markets natural gas liquids (NGLs). It is located in Denver, CO.

Shell Canada Ltd. processes, markets & distributes natural gas, liquids and bitumen. The company engages in the discovery and development of hydrocarbon reserves. It also markets refined petroleum products. The company was founded in 1911 and is headquartered in Calgary, Canada.

Southcross Energy LLC engages in the provision of natural gas processing and transportation services. The company was founded in 2009 and is headquartered in Dallas, TX.

Part of BP Plc, Dome Petroleum Ltd. is a Canadian company that explores and produces crude oil and natural gas. The private company is based in Calgary, Canada. Dome Petroleum was acquired by Amoco Corp. on September 29, 1988 for $4,198.71 million.

Amplify Oklahoma Operating LLC engages in the production and exploration of oil and gas industry. It focuses on the application of drilling and completion techniques to oil and liquid prone resources in previously discovered yet underdeveloped hydrocarbon trends. The company was founded on February 22, 2006 and is headquartered in Tulsa, OK.

Air Liquide America Corp. wholesales industrial supplies. The company is headquartered in Houston, TX.

Gas Processors Association operates an association that creates industry standards for processing natural gas technology and procedures. The private company is based in Tulsa, OK.