Iron ore - WikipediaIron ores are rocks and minerals from which metallic iron can be economically extracted. . Iron-ore mining methods vary by the type of ore being mined.iron ore mining process in tarlac,iron ore mining process in tarlac,Taconite - WikipediaTaconite is a variety of iron formation, an iron-bearing (> 15% iron) sedimentary rock, in which . By the end of World War II, however, much of the high-grade iron ore in the United States had been exhausted. . Beginning in 1955, the crushed waste rock (tailings) from processing taconite of the Reserve Mining Company in.
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