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Surveying in Berkshire Mine |
Education, Postsecondary Education, Education, Higher, Engineering, Natural Resources, Mines and Mineral Resources, Iron Mines and Mining |
Jigglin' In. Mine surveying in Iron Country. Scanned: June 18, 2014 |
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Calumet & Hecla Stamp Mill |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, Metal Trade, Copper Industry and Trade |
Calumet & Hecla Stamp Mills. Hecla Mill, Wash Room. Scanned: September 10, 2014 |
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Calumet & Hecla Stamp Mill |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, Metal Trade, Copper Industry and Trade |
Calumet & Hecla Stamp Mills, sand leaching plant. Scanned: September 10, 2014 |
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Calumet & Hecla Stamp Mill |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, Metal Trade, Copper Industry and Trade |
View of part of the Calumet & Hecla Stamps from Torch Lake, Hecla Sand Wheel House, W.W. Boiler House, Water Works, Hecla Mill, Co's Dock and Steamboat L'd'g. Scanned: September 10, 2014 |
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Calumet & Hecla Stamp Mill |
Engineering, Buildings, Natural Resources |
[Calumet and Hecla Mining Company stamp mill. Operator stands at mechanized wheel.] Scanned: October 15, 2014 |
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Calumet & Hecla Machinery |
Engineering, Buildings, Natural Resources |
[Calumet and Hecla Mining Company machinery.] Scanned: October 15, 2014 |
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Calumet and Hecla Mining Co. Drawing |
Natural Resources, Mines and Mineral Resources, Manufacturing Process, Mills and Millwork, Engineering |
Calumet & Hecla Consolidated Copper Co. Single Line 13KV System Diagram. [Electric system based out of the Lake Linden Power Plant.] Scanned: July 11, 2013 |
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Calumet and Hecla Stamp Mill |
Engineering, Historic Sites, Historic Mines, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining |
Calumet and Hecla Stamp Mills, Head Foundation. Calumet Mill Heads No. 6, 7, 8, 9, 10 and 11. Scanned: June 8, 2012 |
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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 |