What did Salmita Mine and Outpost Island Mine both mine for
Outpost Island Mine The Outpost Island Mine was a gold and tungsten producer 94 kilometres southeast of Yellowknife, Northwest Territories on an island of Great Slave Lake. Gold was discovered here in 1935 by prospectors, and some development was undertaken in 1936-1938. Tungsten ores became valuable during World War II, so the owners (Slave Lake Gold Mines Limited) investigated the tungsten possibilities of the mine. It produced small amounts of gold, copper, and tungsten during 1941-1942, and then again in 1951-1952 during the Korean War. It was a small deposit and was not considered economic because of unpredictable tungsten market prices in the 1950s.
Talvivaara Mining Company Talvivaara Mining Company plc (Finnish: "Talvivaaran Kaivososakeyhtiö Oyj" ) is a Finnish-based nickel mining business operating in Finland. Formerly listed on the London and Helsinki Stock Exchanges, the company was a constituent of the OMXH25 index. Its mining business, Talvivaara Sotkamo, went bankrupt in November 2014, and it is bound for liquidation, with at least 98% of equity lost, and €1.4 million debt outstanding. The mine had suffered several leaks of toxic metal-contaminated tailings, which had threatened local waterways. Members of the management have been charged with criminal environmental offenses. There has been considerable government involvement, with the Government of Finland being the largest single owner through their investment company Solidium. In 2015, the newly established government-owned corporation Terrafame Oy bought the mining business of Talvivaara. Since the company is now an assetless shell, its creditors have demanded that Talvivaara (the parent company) files for bankruptcy. Since February 2017 Terrafame, operating the Talvivaara Mine, have new owners from Singapore Trafigura and its Galena Asset Management.