Calumet and Hecla Mining Companies Media Collection, Circa 1954-Circa 1961.
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There are 3 Entities related to this resource.
Calumet and Hecla Mining Company
http://n2t.net/ark:/99166/w6x10xtg (corporateBody)
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 successfully expanded its operations over several separate mineral bodies, developed capital-intensive an...
Calumet and Hecla Consolidated Copper Company
http://n2t.net/ark:/99166/w6h46hmd (corporateBody)
The Calumet and Hecla Consolidated Copper Company, which traces its founding to 1864, was the most successful corporation to have mined native copper on 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 successfully expanded its operations over several separate mineral bo...
Calumet & Hecla, Inc.
http://n2t.net/ark:/99166/w6p62x75 (corporateBody)
