Iron Ore Mining Artifacts. Minnesota Mining History, Mining History, History of Mining, Gold Mining, Iron Mining, Cuyuna Range, Mesabi Range, Vermilion Range, Mining, Miners, Miner's, Mining and processing of banded iron formations involves coarse crushing and screening, followed by rough crushing and fine grinding to reduce the ore to the
Increasing iron ore demand, coupled with the depletion of high-grade hematite ores in the United States, after World War II led to development of lower-grade iron ore sources, principally the utilization of magnetite and taconite. Iron-ore mining methods vary by the type of ore being mined.
Cleveland-Cliffs (NYSE:CLF) is a major player in the magnetite ore industry, with five iron ore mines that are focused on magnetite ore. For instance, the Empire mine, located in Michigan's Marquette Range, has an annual capacity of 4.5 million tons.