Trunkline Lng Company v. Federal Energy Regulatory Commission, Indiana Gas Company, Inc., Panhandle Customer Group, Consumers Power Company, Michigan Consolidated Gas Company, Mississippi River Transmission Corporation, Intervenors. Panhandle Customer Group v. Federal Energy Regulatory Commission, Michigan Consolidated Gas Company, Trunkline Lng Company, Indiana Gas Company, Inc., Citizens Gas & Coke Utility, Mississippi River Transmission Corporation, IntervenorsFiledDec 14, 1990