CALUMET HARBOR American Ship Building Co. Calumet Harbor Terminal Inc. Calumet Shipyard & Dry Dock Co. Cargill Inc. (C. & N.W. Elevator) Catalin Corp. of America Central Soys Co., Ine. Commonwealth Edison Co. Continental Grain Co. Crooks Terminal Warehouse Inc. Dreyfus Corp., Louis (Irondale Elevator) Federal Furnace Plant (Interlake Iron Corp.) Fitz Simons & Connell Dredge & Dock Co. Ford Motor Co. General Chemical Co. General Mills (Central Division) 238 eA wy. a General Mills (Star Grain Division) Globe Roofing Products Co., Inc. Great Lakes Carbon Corp. Great Lakes Dredge & Dock Co. Great Lakes Towing Co. Hibben & Co. Boiler Works Interlake Iron Corp. International Harvester Co. Wisconsin Steel Works International Steamships Terminals Inc.