The list includes Alon (United States), Conoco Philips (United Kingdom), Eni (Italy), Gazprom (Russia), Glencore (Switzerland), Hellenic Petroleum (Greece), MOL (Hungary), Occidental Oil and Gas Holding Corporation (United States), OMV (Austria), PKN Orlen (Poland) and TNK-BP (United States).
Na popisu se nalaze tvrtke The Alon (Sjedinjene Države), Conoco Philips (Velika Britanija), Eni (Italija), Gazprom (Rusija), Glencore (Švicarska), Hellenic Petroleum (Grčka), MOL (Mađarska), Occidental Oil i Gas Holding Corporation (Sjedinjene Države), OMV (Austrija), PKN Orlen (Poljska) i TNK-BP (Sjedinjene Države).