Saginaw Mine


By: Lawrence Rakestraw

Saginaw Mine Western Shaft, Rakestraw collection, ISRO Archives.


till a third operation took place, this to the south of Conglomerate Bay, near Rock Harbor. The Saginaw Mining Company, apparently backed by Marquette capital, sent out a small work force in 1877 to mine an old location formerly prospected by the Ohio and Isle Royale Company. They sank two shafts with a winze connecting them and took out a limited amount of copper. But operations ceased after 1879.

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  1. Rakestraw, L., United States., & Isle Royale Natural History Association. (1965). Historic mining on Isle Royale. Houghton, Mich.: Isle Royale Natural History Association in cooperation with the National Park Service.