- ABB
Randall Corporation
- Amoco
Production Company
- Arcadia
Refining Company
- ARCO
Oil and Gas Company
- Arkansas
Louisiana Gas Company
- Bantrel,
Inc.
- Basic
Resources International Ltd.
- BP America Inc.
- British Gas Bolivia
- Berkshire
Gas Company
- Bloomfield
Refining Company
- British
Columbia Resources Corp.
- Canal
Refining Company
- Chevron
USA, Inc.
- Chieftain
Development Company
- CIBA-GEIGY
Corporation
- Cities
Service Company
- Consolidated
Oil & Gas, Inc.
- Consumers
Power Company
- Conoco,
Inc.
- Cox
Oil & Gas Company
- Dallas
Production, Inc.
- Direct
Fuels
- El
Paso Natural Gas Company
- Energas
Corporation
- EnMark
Gas Corporation
- Enron
Gas Processing Company
- Excel
Paralubes
- Exxon
Company, USA
- Florida
Gas Transmission Company
- Freeport-McMoRan
Oil & Gas Co.
- Gary
Energy Corporation
- General
Electric
- Georgia-America
Oil Refinery
- Government
of Panama
- Kern
Oil & Refining Co.
- Kerr-McGee
Corporation
- Lear
Petroleum Corporation
- LL&E
Petroleum Marketing, Inc.
- Lion
Oil Company
- Louis
Dreyfus Natural Gas
- Magie
Bros. Oil Company
- Maloney
Industries, Inc.
- Marathon
Petroleum Company
- Martin
Gas Sales, Inc.
- Maxus
Energy Corporation
|
- Mesa
Petroleum
- Mobil
Corporation
- Murphy
Oil U.S.A., Inc.
- Northern
Natural Gas
- Northwest
Pipeline Corporation
- Pennzoil-Quaker
State Company
- Petrus
Operating Company
- Phillips
Petroleum Company
- Pioneer
Natural Resources, Inc.
- Pitts
Oil Company
- Placid
Oil Company
- Pride
Refining, Inc.
- Quimicos
Coronel S.A.
- Refinaria
de Petroleos Manguinhos
- Refinor
S.A.
- Reliant
Energy Services
- Rockland
Pipeline Company
- Samson
Oil Company
- Santa
Fe Pipelines System Co.
- Shell
Oil Co.
- Sinclair
Oil Corporation
- Societe
Quebecoise D-Initiatives
- Southern
Union Gas Company
- Southwest
Gas Corporation
- Star
Enterprise
- Suncor,
Inc.
- Sulphur
River Exploration, Inc.
- Sun
Refining and Marketing Co.
- Sun
Pipeline Company
- Tecna S.A.
- Tenneco
- Texaco,
Inc.
- Texas
Municipal Power Agency
- Texas
Pacific Oil Company
- Texas
Utilities Fuel Co.
- Texas Energy Management
- Torch
Energy Marketing, Inc.
- Total
Minatome Corporation
- Transco
Liquids Company
- Tri-Star
Energy Corporation
- Union
Oil Company of California
- United
Gas Pipe Line Company
- Western
Canada Coal Trans.
- Westcoast
Transmission Co.
- Williams
Companies, Inc.
- Wisconsin
Public Service Corp.
|