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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 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 |
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Blue Print- Calumet and Hecla Electric Power Plant |
Engineering, Historic Sites, Historic Mines, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining |
Calumet and Hecla Mining Company Electric Power Plant at Stamp Mills. Tunnel Details. Scanned: June 8, 2012 |
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Blue Print- Calumet and Hecla Electric Power Plant |
Engineering, Historic Sites, Historic Mines, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining |
Calumet and Hecla Mining Company Electric Power Plant at Stamp Mills; Engine House Details in Various Scales. Scanned: June 8, 2012 |
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Blue Print- Calumet and Hecla Electric Power Plant |
Engineering, Historic Sites, Historic Mines, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining |
Calumet and Hecla Mining Company Electric Power Plant at Stamp Mills; Basement drains. Scanned: June 8, 2012 |