Your search General Motors Corporation, Petitioner, v. Federal Energy Regulatory Commission, Respondent,northern Illinois Gas Co., Natural Gas Pipeline Co. Ofamerica, Northern Indiana Public Service Co., Mississippiriver Transmission Corp., Iowa-illinois Gas & Electric Co.,peoples Gas, Light and Coke Co., Central Illinois Light Co.,associated Natural Gas Company, the Cities of Lenox,bedford, Clearfield and Prescott, Iowa, Intervenors did not match any document.