Belgian Congo
Union Minière du Haut Katanga
Western Australia
Chile
Braden Copper Company (El Teniente Copper Mine)
Government of Western Australia
** Used at a large number of Western Australian gold mines - list is being verified
Mexico
American Smelting and Refining Company - Angangueo Unit
Compania Minera Asarco, S.A. - Parral Plant
Compania Minera Asaarco, S.A. - Santa Barbara Plant
The Fresnillo Company - Buenos Aires Unit
The Fresnillo Company - Plateros Unit