A.P. Moller A/S
AECI Explosives and Chemicals, Ltd.
Agip Petroli
Agrico Chemical Company
Alliance Marine Services, Inc.
American Natural Soda Ash Corp. (“ANSAC”)
American Octane Corporation
Amoco Chemical Company
Amoco Oil Company
Amoco Petroleum Canada
Amoco Trinidad
Arab International Gas & Transportation
Arab Petroleum Investment Corporation
Arco Chemical Americas
Arco Chemical Asia  Pacific, Ltd.
Atlantic Methanol Production Co. (AMPCO)
Australia Gas Light Company
BASF
BHP Americas
BHP Petroleum Pty.
Baker & O’Brien, Incorporated
Bayer Corporation
Bitor International
Bonner & Moore Market  Consultants
Booz Allen Hamilton
BP Chemicals International
BP Gas International, Ltd.
British Gas
C. Itoh
CEPSA
Calor Gas, Ltd.
Caltex Petroleum Corporation
Camisea LNG Holdings Company
Cape Horn Methanol
Caribbean Nitrogen Company (CNC)
Celanese Ltd.
Chem Systems
Chemical Market Associates, Inc.
Chevron Chemical
Chevron Corporation U.S.A.
Citgo Petroleum Corporation
Citicorp
Clark Refining & Marketing Company
CMS Energy
Conagra Fertilizer
Conoco, Inc.
ConocoPhillips
Corporacion Nacional de Inversiones
Corpoven
Dow Chemical Asia
Dow Chemical Europe S.A.
Dow Hydrocarbons and Resources
Duke Energy Merchants, LLC
Edison Pipeline & Terminal Co.
Egypt Basic Industries Corporation (EBIC)
Eisenbau Essen GMBH
Elf Caledonia, Ltd.
Enron Engineering & Construction Company
Enron International
Export-Import Bank of the United States
Exxon Chemical Asia
Exxon Chemical Company
Exxon Chemical International
Farmland Industries, Inc.
Farmland Misschem Limited
Ferrell Gas
Fina Oil and Chemical Company
First Boston
Flinthills Resources
FMC
GTL Resources
Gas Unie
GATX Terminals Corp.
Gazocean
General Chemicals Corporation
Gulf Canada, Ltd.
Gulf Petrochemical Industries Company
Havtor Management
Henley Group
Hercules, Inc.
Hoechst Celanese Chemical Group
Houston Fuel Oil Terminal Company
Hunt Oil Company
ICI Chemicals & Polymers, Ltd.
Imperial Oil
Industrias Venoco
International Octane, Ltd.
InterOil
Koch Industries
Lagoven
Liquigaz Pty. Ltd.
Lloyd's Register
Lyondell
M.W. Kellogg
Maasvlakte Olie Terminal CV
Malaysian International Shipping Co.
Mapco
Metanol de Oriente, Metor, S.A.
Methanex Chile Limited
Methanex Corporation (Vancouver)

Methanex New Zealand Limited
Methanol Holdings Trinidad Limited (MHTL)
Mississippi Chemical Company
Mitsubishi Corporation
Mitsui & Company (U.S.A.), Inc.
Mitsui OSK Lines
Mobil Chemical Company
Mobil Oil Corporation
Muse, Stancil & Company
NALCOSA, S.A.
National Energy Corp. of Trinidad & Tobago
National Shipping Co. of Saudi Arabia
Natref
Natural Gas Clearinghouse
Negev Star Ltd.
Neste Oy
Nippon Oil Company
Nippon Oil Staging Terminal Company
Nippon Petroleum Gas Company
Nissho Iwai
Norsk Hydro Agricultural Group
Norsk Hydro Oil & Gas Company
North American Chemical
Occidental Petroleum Corporation U.S.A.
Ocean Phoenix
OK Petroleum AB
Oman Oil Company, Inc.
P.T. Pupuk Kalimantan Timur
Pace Consultants
Paktank Chemicals Nederland, BV
Paktank International Storage
PEMEX
Pequiven
Peru LNG S.R.L.
Petrobras
Petro-Canada
Petrochemical Industries Company
Petrofina S.A.
Petroleos de Venezuela, S. A.
Petromont
Petroperu
Petrotrin
PetroUnited Terminals, Inc.
Phillips Petroleum
Placid Refining
Portland Pipe Line Company
Primagaz
Productos Quimicos Coin
Purvin & Gertz, Inc.
Qatar Fertilizer Company 
Qatar Fuel Additives Co.
Qatar General Petroleum Corporation
Repsol Butano
Resource Planning Consultants
Royal Ministry of Petroleum & Energy (Norway)
RPC Chile SA
RPG Enterprises
Sabic
Samarec
Samedan Oil Corporation
Sandefer Capital Partners, Inc.
Saudi Aramco
Scimitar Oil, Ltd.
SeaRiver Maritime, Inc.
Shell Gabon
Shell International Exploration & Production
Shell International Petroleum Co., Ltd.
Shell Oil Company
Shipping Corp. of Trinidad &  Tobago
Soc. Chim. de la Grande Paroisse
Sonatrach
Soquip
Southern Pacific Transportation
Sprague Energy
Statoil
Sun Marketing & Refining
Texaco USA NGL Division
Texas Eastman
Tomen America
Total Chimie
Total Marc Rich
Townsend Polymer Services
Transammonia
Transpetro
Transworld Oil
UGI Corporation
UKF Fertilizers
Union Carbide U.S.A.
Union Texas Petroleum
Unocal
Uno-Ven Company
Valero Energy Corporation
Veba Oel Ag
Vopak Logistics, N.A.
W.R. Grace
Warren Petroleum
Waterfront Shipping Company
Yemen Hunt LNG Company, LLC
Yosu Energy Co., Ltd.
YPF