Anglo American Chile Ltd. Antofagasta Minerals S.A. Asarco Incorporated Atlantic Copper Aurubis BHP Billiton PlcBoliden Chinalco Luoyang Copper Co., Ltd. Compania Miñera Doña Ines de Collahuasi SCM Compania Miñera Zaldivar CODELCO Cupori OyDiehl Metall Stiftung & Co. KG
Freeport McMoran Copper & Gold Inc.Golden Dragon Precise Copper Tube Group Inc.Halcor S.A.IBP Conex Ltd
K-O
KGHMKMELa Farga GroupLS-Nikko Copper Inc.LuvataMetallo-ChimiqueMéxicana de Cananea/Méxicana de CobreMiñera Escondida Limitada Mitsubishi Materials Corporation Montanwerke Brixlegg Mueller Europe Ltd. Nexans OMG Kokkola Chemicals Oy Outotec Oy
P-T
Pan Pacific Copper Pegler Yorkshire Group Ltd Revere Copper Products Inc.Rio Tinto/Kennecott Copper Utah Sanha Kaimer Sofiamed S.A. Southern Peru Copper Corporation Sumitomo Metal Mining Teck
U-Z
Viega GmbH & Co. KG Wieland Werke AG Xstrata Yunnan Copper Industry (Group) Co. Ltd.