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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


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


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