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The mine fatalities of Ontonagon County, Michigan, Part of the Lake Superior Mine District. The Lake Mines 3 districts are: -Portage Lake District -Keweenaw Point District -Ontonagon District From 1855 to 1975 it is estimated there have been 2,000 mine related deaths for Keweenaw county, at least 1,700 for Houghton, and 100 for Ontonagon. Ontonagon County is located along the south shore ...
Discovered in 1844, First Production in 1846. The Marquette Iron Range was discovered in 1844 by a party of surveyors led by William A. Burt, who found that their sensitive magnetic compasses produced skewed results because of the concentration of iron in the land they were surveying. Mining began in 1847. At first, the hematite iron ore of the Marquette Range was smelted with local charcoal i...