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By 1912 the mine was at a depth of 1,250 feet (381 m). [4] When the mine closed, level 27 was being developed at 2,341 feet (713.5 m) below the surface and the entire underground workings consisted of more than fifty miles of drifts, adits, and raises. In 1965, US Steel donated the Soudan Mine to the State of Minnesota to use for educational ...
Iron ore was discovered on the Menominee Range in 1867 and on the Gogebic Range in 1884. It was first discovered in Minnesota on the Vermilion Range in 1885, the Mesabi Range in 1890, and the Cuyuna Range in 1903. [2] Underground mines were developed to remove the valuable ore of most ranges.
The largest mine in the range, Soudan, was closed in 1962, and the last mine in the Ely area closed in 1964. [2] Despite the effort needed for the deep mining Soudan mine, the ore obtained was worth the effort; the quality of the hematite ore was so pure that two pieces could be welded. [1]
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Iron ore is currently mined only from open pits, although some mines operated underground early on. [10] Much of the softer ore was formed close to the surface, allowing mining operations to be conducted via open pit mines. The world's largest open pit iron ore mine is the Hull–Rust–Mahoning Open Pit Iron Mine in Hibbing. In the early years ...
Pages in category "Mining communities in Minnesota" The following 40 pages are in this category, out of 40 total. This list may not reflect recent changes. A.
The Minnesota Supreme Court in 2021 ordered the DNR to gather more evidence on whether the mine’s waste basin wo Proposed NewRange copper-nickel mine in Minnesota suffers fresh setback on top of ...
Mountain Iron Mine – iron mine in Mountain Iron, Minnesota; Robinson Mine – copper and gold mine in Ruth, Nevada [8] New Cornelia mine – inactive copper mine near Ajo, Arizona; Ray mine – Asarco copper mine located in Pinal county, Arizona; Red Dog mine – zinc and lead mine in Red Dog Mine, Alaska