Agip/KCO BCT Chemtrade Corporation BP Products North America, Inc. California Sulphur Company Chemical Initiatives ConocoPhillips Company Con-Sul Inc. Devco USA LLC Enersul Inc. ExxonMobil Oil Corporation H.J. Baker & Bro., Inc. Interacid Trading S.A. Inter-Chem International Commodities Export Corporation (ICEC) Jupiter Sulphur L.L.C. Koch Sulfur Products Company LLC Kuwait Petroleum Corporation Marsulex, Inc Martin Operating Partnership, L.P. Mitsubishi Corporation Mitsui & Co. (U.S.A.), Inc. Mosaic Fertilizer, LLC Omni Sulphur Inc. PetroChina International Company Limited Polish Steamship Company PRISM Sulphur Corporation Savage Services Corporation Shell Sulphur Solutions Sinochem Fertilizer Co., Ltd. solvadis GmbH Sultran Ltd. Tasweeq - Qatar International Petroleum Marketing Company Ltd. Tessenderlo Kerley, Inc. Transammonia, Inc Valero Marketing and Supply Company Zwaans van den Heuvel Tankvaart BV
