label: Aerial view of the Bingham Canyon copper mine, Kennecott Utah Copper, September 2003. Photo courtesy...Moreto, André Luiz Silva Pestilho, Mineral Province, Brazil Gustavo Henrique Coelho de Melo, Marco Antônio...Tunnels Au-Ag-Zn-Pb deposit, Montana, United States (mine now exhausted). 1971: Recognized control of ore...high sulfidation epithermal Au-Ag deposit, Chile (mine now exhausted). 1971: First formal recognition...which led to discovery of Perkoa Zn-Pb-Ag deposit (mine under construction). 1990: Recommendation of Cerro |