Salmita Mine and Tundra Mine, produced what?
Tundra Mine The Tundra Mines was a gold producer in the Northwest Territories, Canada between 1964 and 1968, producing 104,476 troy ounces (3250 kg) of gold from 187,714 tons of ore. A detailed history is provided in the link below. Indian and Northern Affairs Canada has a project to remediate the Tundra Mine site under their Northern Contaminants Program, funded by the Canadian Federal Contaminated Sites Action Plan.
Minera Escondida Minera Escondida (which means 'hidden' in Spanish) is a mining company that operates two open pit copper mines in the Atacama Desert, 170 km southeast of Antofagasta in northern Chile. It is currently the highest producing copper mine in the world. Its 2007 production of 1.483 million tons of the metal was worth US$ 10.12 billion, mainly as metal in concentrate, but some as cathode, and was 9.5% of world output and 26% of Chilean production, according to the US Geological Survey's preliminary estimates of 2007 world mine output.