Walter G. Swart Papers, 1904-1911.
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There are 4 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...
American Zinc, Lead and Smelting Company
http://n2t.net/ark:/99166/w6t490bj (corporateBody)
Osceola Consolidated Mining Company
http://n2t.net/ark:/99166/w6wx3d9b (corporateBody)
Seneca Mining Company
http://n2t.net/ark:/99166/w6f234r6 (corporateBody)
Mining company of Virginia City, Nev.; corporate headquarters in San Francisco, Calif. From the description of Seneca Mining Company stock assessment receipts, 1864. (Nevada State Historical Society). WorldCat record id: 83600908 ...