Christopher R. Skoog

ONEOK Partners LP engages in gathering, processing, storage, and transportation of natural gas. The company was founded in 1993 and is headquartered in Tulsa, OK.

Northern Border Pipeline Co. engages in the provision of natural gas transportation system. It links the Midwestern United States with reserves in the Western Canadian Sedimentary Basin. The company was founded in 1978 and is headquartered in Houston, TX.

Part of ONEOK, Inc., Northern Plains Natural Gas Co. is a company that drills for gas. The company is based in Joliet, IL. The CEO of the company is David L. Kyle. Northern Plains Natural Gas was acquired by ONEOK, Inc. on November 17, 2004 for $175 million.

Enterprise Products GP LLC is a provider of oil-refining services. The company provides energy services to producers and consumers of natural gas, natural gas liquids, crude oil, refined products and petrochemicals. The company was incorporated in 1998 and is based in Houston, Texas.

Part of Dan Duncan LLC, Enterprise Products Holdings LLC is a company that functions as an investment holding company. The company is based in Houston, TX. The CEOs of the company are A. James Teague, W. Randall Fowler.

Enterprise Products Operating LLC engages in the provision of processing and transportation services to producers and consumers of natural gas liquids. It operates pipelines, fractionation, processing, and octane enhancement. The company was founded in 1998 and is headquartered in Houston, TX.