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.
Raketa mena On the coast of Androy, the southernmost point of Madagascar, the weather conditions don’t allow the fishermen to go fishing very often. The dunes build up, day by day, over fertile land. But that’s not the worst. The population is missing the most important element, water. To calm their thirst and hunger, many villages eat "raketa mena", a cactus whose scientific name is "Opuntia stricta". But this cactus is an invader that dries out the land. What is the solution?