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Box 30

 Container

Contains 2 Results:

S.A. de C.V. - Boleo Copper Project - Santa Rosalia, Baja California, Drawings & Schedules - Blueprints, Photos, Maps, Etc., 1958

 Item — Box: 30, Folder: 1
Identifier: MS-002.008.001.003.003
Collection Scope and Content Summary From the Collection: Collection, 1855-1973, of the Calumet and Hecla Mining Companies of Michigan's Keweenaw Peninsula. Includes corporate records, administrative correspondence, financial and legal documentation, employment and medical records, property and miners’ housing records, as well as operational records from the company’s underground, surface, stamp mill, reclamation, railroad, and smelting operations. Also includes records of numerous subsidiary and related companies operating in the Michigan copper...
Dates: 1958

Calumet and Hecla Mining Companies Collection

 Collection — Multiple Containers
Identifier: MS-002
Abstract Collection, 1855-1973, of the Calumet and Hecla Mining Companies of Michigan's Keweenaw Peninsula. Includes corporate records, administrative correspondence, financial and legal documentation, employment and medical records, property and miners’ housing records, as well as operational records from the company’s underground, surface, stamp mill, reclamation, railroad, and smelting operations. Also includes records of numerous subsidiary and related companies operating in the Michigan copper...
Dates: 1855-1973