South Dakota Public Utilities Commission v. Federal Energy Regulatory Commission, Maxus Exploration Company, Norfolk Energy, Inc., Arco Oil and Gas Company, Exxon Corporation, Kaneb Exploration, Inc., Okmar Oil Company, Shell Western E & P, Inc., Shenandoah Oil Corporation, Texas International Petroleum Company and Phoenix Resources Company, Kaiser-Francis Oil Company and Leben Oil Corporation, Bass Enterprises Production Company, Intervenors, Northern Natural Gas Co., a Division of Enron Corp. Peoples Natural Gas Company, Division of Utilicorp United, Inc. v. Federal Energy Regulatory Commission, Mapco, Inc., Mapco Oil and Gas Company, Santa Fe Minerals, a Division of Santa Fe International Corporation, Santa Fe-Andover Oil Company, Santa Fe Braun, Inc., Danden Petroleum, Inc., Werner Oil, Inc., Cng Producing Company, and Russell Freeman, D/B/A Continental Energy, John H. Hendrix, Okmar Oil Company, Neleh Gas and Oil Company, Damson Oil Corporation, Montana Consumers Counsel, Public Utilities Commission of South Dakota and Montana Public Utilities Commission, Intervenors, Northern Natural Gas Co., a Division of Enron Corp. Minnesota Public Utilities Commission v. Federal Energy Regulatory Commission, Mapco, Inc., Mapco Oil and Gas Company, Santa Fe Minerals, a Division of Santa Fe International Corporation, Santa Fe-Andover Oil Company, Santa Fe Braun, Inc., Danden Petroleum, Inc., Werner Oil, Inc., Cng Producing Company, and Russell Freeman, D/B/A Continental Energy, Wayman W. Buchanan, Kaneb Exploration, Inc., Champlin Exploration, Inc., Shell Western E & P, Inc., Exxon Corporation, Norfolk Energy, Inc., Arco Oil and Gas Company, Division of Atlantic Richfield Company, Intervenors, Northern Natural Gas Co. A Division of Enron Corp

Court of Appeals for the D.C. Circuit