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Calumet & Hecla Mining Company - Hecla Mill Drawings |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, |
Calumet & Hecla Mining Comany, Hecla Mill wash heads. Foundation walls and launders plan. Scanned: September 9, 2014 |
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Calumet & Hecla Mining Company - Plan & Evaluation of Machinery |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, |
Calumet & Hecla Mining Company Hecla Mill Heads No. 12 and No. 13, plan and elevation of machinery. Scanned: September 9, 2014 |
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Ahmeek Number Three and Four |
Engineering, Buildings, |
Ahmeek Mining Company. Ahmeek number three and four dry. First flor plan and Details. Calumet and Hecla Drawing number 7869. Scanned: March 31, 2014 |
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Plans - North Kearsarge #4 Dry |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Buildings, |
Osceola Consolidated Mining Co. North Kearsarge #4 Dry. Plans and Elevations. [Floor plan for the dry house at North Kearsarge which includes the bill for materials used.] Scanned: August 26, 2009 |
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Quincy Regrinding Plant |
Historic Sites, Historic Mines, Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Buildings |
Map plans of the Quincy Regrinding Plant- Plan and Longitudinal Sections Scanned: November 26, 2014 |
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Calumet & Hecla Mining Company [Parking Garage?] |
Geography, Maps, , |
Calumet & Hecla Mining Company [Parking Garage?] Scanned: June 14, 2010 |
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Calumet & Hecla Consolidated Copper Co. - Hecla Carpenter Shop & Lumber Shed Yard |
Geography, Maps, , |
Calumet & Hecla Consolidated Copper Co. - Carpenter Shop & Lumber Shed Yard. Pond Water Mains - Additions Scanned: June 14, 2010 |
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Calumet & Hecla Mining Company Hecla Carpenter Shop |
Geography, Maps, , |
Calumet & Hecla Mining Company Hecla Carpenter Shop Addition First Floor Plan Scanned: June 14, 2010 |
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Calumet & Hecla Mining Company Carpenter Shop Addition |
Geography, Maps, , |
Calumet & Hecla Mining Company Carpenter Shop Addition Scanned: June 14, 2010 |
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Calumet & Hecla Mining Company Window Details |
Geography, Maps, , |
Calumet & Hecla Mining Company Window Details Scanned: June 14, 2010 |