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. Outpost Island Mine:  Gold was discovered here in 1935 by prospectors, and some development was undertaken in 1936-1938. Outpost Island Mine:  Tungsten ores became valuable during World War II, so the owners (Slave Lake Gold Mines Limited) investigated the tungsten possibilities of the mine.
i don't know