Mitä mineraalia Petsamossa esiintyy eniten?
Mining for metals in Finland began in 1530 at the Ojamo iron mine but mining in the country was minimal until the 1930s. The Outokumpu ore deposit, discovered in 1910, was key to the development of mining in Finland during the 20th century. When Outokumpu opened in 1910 it was Finland's first sulphide ore to be mined. This mine closed in 1989. Another important Finnish mining resource was the nickel of Petsamo, which was mined by Canadian INCO from the 1920s onwards. Petsamo and its mines were, however, lost to the Soviet Union in 1944 as result of the Moscow Armistice.
nickel