Brief History of Ontario Mining | Republic of MiningJul 23, 2010 . INCO and Mond controlled the world's nickel industry during the first .. At the end of the 19th century the Helen Iron Mine near Wawa, north of.a brief history of mining industry of iron,A very brief history of mining on the Cuyuna Iron Range | MinnPostApr 5, 2016 . During World War I and World War II, the district mined manganese-rich iron ores to harden the steel used in wartime production. After mining.
a brief history of mining industry of iron