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Cleveland-Cliffs manages and operates four iron ore mines in Minnesota and two mines in Michigan, one of which, the Empire Mine, has been indefinitely idled. [3] These mines produce various grades of iron ore pellets, including standard and fluxed, for use in blast furnaces as part of the steelmaking process as well as Direct Reduced (DR) grade pellets for use in direct reduced iron (DRI ...
In 1876, settlers Fred and Moses Manuel, Alex Engh, and Hank Harney discovered the Homestake deposit during the Black Hills Gold Rush. The Black Hills had been guaranteed to the Lakota Nation by the Fort Laramie Treaty, but the land was stolen for its gold. [4] A trio of mining entrepreneurs, George Hearst, Lloyd Tevis, and James Ben Ali Haggin ...
According to the United States Census Bureau, the city has a total area of 2.06 square miles (5.34 km 2), all land. [14]Two prominent manmade features of Lead's geography are the giant open cut, which was used for surface gold mining by the Homestake Mine, [15] and the resulting ridge nearby built with the non-producing material from the cut.
Etta, also known as Etta Camp and Etta Mine, is a ghost town in Pennington County, South Dakota, United States. It was a successful mining town, known for its discovery of the largest spodumene crystal ever found.
The Black Hills are rich in minerals such as gold, silver, copper, and lead. The Homestake Mine, the largest and deepest gold mine in North America, was located in the Black Hills and produced over $1 billion in gold since it started operation in 1876. [17] The mine is now a scientific laboratory.
The following table lists the coal mines in the United States that produced at least 4,000,000 short tons of coal.. According to the U.S. Energy Information Administration (EIA), there were 853 coal mines in the U.S. in 2015, producing a total of 896,941,000 short tons of coal.
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South Dakota has extensive mineral resources in the Black Hills and some oil and gas extraction in the Williston Basin. The Homestake Mine, active until 2002, was a major gold mine that reached up to 8000 feet underground and is now used for dark matter and neutrino research.