Processed taconite pellets as used in the steelmaking industry, with a US quarter (0.96 in./24.3 mm) shown for scale.
Iron mining in the United States produced 48 million metric tons of iron ore in 2019.[1] Iron ore was the third-highest-value metal mined in the United States, after gold and copper.[2] Iron ore was mined from nine active mines and three reclamation operations in Michigan, Minnesota, and Utah. Most of the iron ore was mined in northern Minnesota's Mesabi Range. Net exports (exports minus imports) were 3.9 million tons. US iron ore made up 2.5 percent of the total mined worldwide in 2015. Employment as of 2014 was 5,750 in iron mines and iron ore treatment plants.[3]
US iron ore mining is dominated by the Precambrian banded iron formation deposits around Lake Superior, in Minnesota and Michigan; such deposits were also formerly mined in Wisconsin. For the past 50 years, more than 90 percent of US iron ore production has been mined from the Lake Superior deposits. None of the iron ore now mined in the US is “direct shipping” ore ready to be fed into the iron- and steel-making process. The ore is concentrated to raise the iron content before use. All the iron ore currently mined is from open pits.
^"Iron ore mine production in the United States from 2015 to 2019 (in million metric tons)*". Statisa. Retrieved 13 December 2020.
^US Geological Survey, Iron ore, Mineral Commodity Summary, January 2016.
^US Geological Survey, Iron ore, Jan. 2015.
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