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Richness of Calumet Conglomerate inspired an explosion of development | News, Sports, Jobs

Timothy O’Shea arrived at the Calumet mine location in December of 1865. By all accounts the area was a wilderness, except for the clearing in the woods aroun ....

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Tamarack Junior Mine (Tamarack Jr. Mine), Centennial Heights, Calumet Township, Houghton Co., Michigan, USA

Tamarack Junior Mine (Tamarack Jr. Mine), Centennial Heights, Calumet Township, Houghton Co., Michigan, USA
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