| Thumbnail | Subject(s) | Description | Add to Shoebox |
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Photographs of the Calumet and Hecla Mines |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Excavation, Dredging, Manufacturing Process, Mills and Millwork |
Calumet and Hecla Stamp Mills. Sand Dredge. Lever Room. [Interior view of the room showing the numerous levers that operate the dredge.] Scanned: November 4, 2009 |
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Photographs of the Calumet and Hecla Mines |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Excavation, Dredging, Manufacturing Process, Mills and Millwork |
Calumet and Hecla Stamp Mills. Sand Dredge. Switch board. [Interior view of the dredge showing the switch board.] Scanned: November 4, 2009 |
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Photographs of the Calumet and Hecla Mines |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Excavation, Dredging, Manufacturing Process, Mills and Millwork |
Calumet and Hecla Stamp Mills. Sand Dredge. General View. [Exterior view of the dredge.] Scanned: November 4, 2009 |