Amerada Hess Corporation
American International Petroleum Corp.
American Refining Group
Anonima Petroli Italiana SpA (API)
API Group
Ashland Petroleum Company
Astra-Capsa
Attock Refinery Limited (ARL)
BayernOil Raffineriegesellschaft
Bharat Petroleum (India)
Bongaigaon Refinery & Petrochemical
BP
BP - Whiting Refinery
Caltex Petroleum Corp.
CanArgo Energy Corporation
Cenex Harvest States Cooperatives
