La liste comprend pratiquement tous les principaux producteurs pétroliers, dont Amoco, Anchor, Arco, BP, Chevron, Conoco, Exxon, Hess, Marathon, Mobile, Penzoil, Phillips, Shell, Sun et Texaco.
The list contains almost every major petroleum producer, including Amoco, Anchor, Arco, BP, Chevron, Conoco, Exxon, Hess, Marathon, Mobile, Penzoil, Phillips, Shell, Sun, and Texaco.