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The Lake Superior Mine Fatalities (This project is intended to hold profiles of all the mining deaths that occurred in the Lake Superior District.) The Lake Mines 3 districts are: Portage Lake District Keweenaw Point District Ontonagon District Including now the Marquette Iron Range Mines . The underground copper mines were a treacherous place, where danger lurked at every turn. ...
The Calumet and Hecla Consolidated Copper Company was the most successful corporation to have mined native copper in Michigan's Upper Peninsula. Through nearly a century of mining activity, the company produced in excess of 4.5 billion pounds of refined copper and issued over $200 million in shareholder dividends. Unlike many of its competitors along the Keweenaw Peninsula, Calumet and Hecla su...