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Keweenaw National Historical Park
News Releases
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| |  | | Did You Know? To reach 9,260 feet down into the shafts of the Quincy copper mine, the world's largest steam-driven hoist was built in 1918. The Nordberg Steam Hoist and its reinforced concrete building, with brick veneer and Italian-tiled walls, cost over $370,000 but was used for only eleven years. more... | | |
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Last Updated: January 06, 2012 at 14:08 MST |