Anaconda Copper Mining Company Reduction Dept. / Washoe Sampler records, 1905-1971

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Anaconda Copper Mining Company Reduction Dept. / Washoe Sampler records, 1905-1971

http://nwda.orbiscascade.org/ark:/80444/xv62380

These records of the Anaconda Copper Mining Company consist of assay records (1905-1964) of the Washoe Sampler and an index (1920s-1960s) to financial journals of the Anaconda Reduction Department. The assay records include numerical listings by sample lot number and give the name of the mine/company and assay information including ounces of copper, gold, and silver per ton of ore. Accompanying these records is an index by mine/company giving lot number and date; and assay cards giving more detailed assay/ore settlement information. There is also Berkeley Pit ore reserve information (1959-1964). The Reduction Department records consist of an index to some of the financial journals of itemized expenditures which are located in Manuscript Collection 169, The Anaconda Copper Mining Company Records.

20 linear foot of shelf space

eng,

Montana Historical Society Research Center Archives

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SNAC Resource ID: 6375378

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Anaconda Copper Mining Company

http://n2t.net/ark:/99166/w6t18ssg (corporateBody)

The Anaconda claim was located in 1875. In 1881 Marcus Daly discovered the copper vein that began copper mining in Butte, Montana. The Anaconda Copper Mining Company was organized on June 18, 1895 in Butte and it dominated the early industrial history of Montana. In 1903 nearly three-quarters of the wage earners in the state were either directly or indirectly working for the company. In 1917 there was a general miners' strike, and much worker/owner tension stirred up by the war, the I.W.W., and ...