Calumet & Hecla, Inc.
Archival Resources
| Role | Title | Holding Repository | |
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| referencedIn | Calumet and Hecla Mining Company. Calumet and Hecla Mining Companies Media Collection, Circa 1954-Circa 1961. | Michigan Technological University, J.R. Van Pelt & Opie Library; Michigan Tech |
Bibliographic and Digital Archival Resources
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| associatedWith | Calumet and Hecla Mining Company | corporateBody |
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