- American Petroleum Institute (API)

– International Organisation of Oil and Gas Producers (OGP)

– International Council on Mining and Metals (ICMM)

Üzvlər: Alcoa, CVRD, Freeport-McMoRan Copper & Gold, Gold Fields, Mitsubishi Materials, Nippon Mining & Metals, Sumitomo Metal Mining, Teck Cominco, и Zinifex