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Name County Years Material Coordinates Adventure mine: Ontonagon: 1850–1920: copper: Alabastine Mine: Kent: 1907– gypsum: Arcadian mine: Houghton: 1898–1908: copper
The mine is located on the Yellow Dog Plains in the Upper Peninsula of Michigan in the United States. Eagle is the only primary nickel mine in the United States . The mine began production in fall 2014 and is expected to produce 440 million pounds of nickel, 429 million pounds of copper and small amounts of other metals (platinum, palladium ...
Evergreen Bluff mine - Mass City, Ontonagon County; Flintsteel mine (formerly known as the Nassau mine, Old Flintsteel mine, and the Superior-Nassau Superior mine) - Mass City, Ontonagon County; Florida mine - Florida location, Houghton County; Franklin mine - Franklin; bought by the Quincy Mining Company in 1908
This list of deepest mines includes operational and non-operational mines that are at least 2,224 m (7,297 ft), which is the depth of Krubera Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
The mine was the first Michigan copper mine to switch from fissure mining to amygdaloid mining, when the recently discovered Pewabic amygdaloid lode was found to cross Quincy property in 1856. [9] High-grade fissure veins contained large, pure masses of copper, but the masses could take days or even months to extract, at high cost.
Pages in category "Mines in Michigan" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. *
Some mines continued to operate into the 1960s, but the volume never reached the same levels as in the earlier boom years. A defining event was the last shipment of iron ore in August 1967 to Granite City Steel in Illinois. Approximately 325 million tons of this ore was mined from around 40 individual mines between 1877 and 1967.
The Michigan State Geologist Douglass Houghton (later to become mayor of Detroit) reported on the copper deposits in 1841, which quickly began a rush of prospectors. Mining took place along a belt that stretched about 100 miles southwest to northeast through Ontonagon, Houghton, and Keweenaw counties.