What did Salmita Mine and Outpost Island Mine both mine for
Salmita Mine The Salmita Mine was a gold producer in the Northwest Territories, Canada during 1983 to 1987. The deposit was first discovered in 1945 and underground exploration was carried out in 1951-1952. It was reactivated for exploration by Giant Yellowknife Mines Limited in 1975 and entered production in 1983. They used the old camp and milling plant of the abandoned Tundra Mine, located a few kilometres to the south. The mine produced 179,906 troy ounces (5596 kg) of gold from the milling of 238,177 tons of ore.
Cerro Rico Cerro Rico (Spanish for "rich mountain"), Cerro Potosí ("Potosí mountain") or Sumaq Urqu (Quechua "sumaq" beautiful, good, pleasant, "urqu" mountain, "beautiful (good or pleasant) mountain") is a mountain in the Andes near the Bolivian city of Potosí. Cerro Rico was famous for providing vast quantities of silver for Spain during the period of the New World Spanish Empire. The mountain, which is popularly conceived of as being "made of" silver ore, caused the city of Potosí to become one of the largest cities in the New World. After 1800, the silver mines were depleted, making tin the main product. This eventually led to a slow economic decline. Nevertheless, the mountain continues to be mined for silver to this day. Due to poor worker conditions, such as a lack of protective equipment against the constant inhalation of dust, many of the miners contract silicosis and have a life expectancy of around 40 years. The mountain is still a significant contributor to the city's economy, employing some 15,000 miners.