21 Million pounds of Copper! The Michigan Mine Site in Rockland, MI The Michigan Mining Co formed in 1899, 5 shafts made up the Mine. It produced over 21mil lbs of refined copper. The Michigan Mine was know to produce nice specimens of both copper and silver. Lava flows of basalt, andesite, and felsite. Follow other pages instagram.com/funintheup instagram.com/upperpeninsulawaterfalls instagram.com/stevejurmu | Upper Peninsula of Michigan
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