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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 ...
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 ]
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 ...
At the height of the mining, the Cuyuna Range was the location of the worst mining disaster in Minnesota, the Milford Mine disaster. [3] On February 5, 1924, a new tunnel was blasted too close to nearby Foley Lake, and water rushed in, killing 41 miners. [1]: 6 Mining on the range continued until 1984.
List of mines in Manitoba; List of mines in New Brunswick; List of mines in Newfoundland and Labrador; List of mines in the Northwest Territories; List of mines in Nova Scotia; List of mines in Nunavut; List of mines in Ontario. List of mines in Temagami; List of mines in Prince Edward Island; List of mines in Quebec; List of mines in Saskatchewan
How mica mined by kids in Madagascar ends up in products used by millions of Americans.
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.
Mines in Minnesota (1 C, 2 P) ... Mines in New Hampshire (1 P) Mines in New Jersey (7 P) Mines in New Mexico (4 P) Mines in New York (state) ...