Petersen, Max S.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/9645Date scanned: 2002-05-17.USBM #58402; Motor-generator set, transformers and pump on 18th level. Iroquois Mine, Calumet & Hecla Consolidated Copper Company, Calumet, Houghton County, Michigan. Feb. 1945 / M.S.P. #58403; Triplex pump on 18th level, Iroquois Mine, 25 hp. motor pumping to surface (1800 ft.) Calumet & Hecla Consolidated Copper Company, Calumet, Houghton County, Michigan. Feb. 1945 / M.S.P.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.The Iroquois Mine is an underground copper mine in Keewenaw County, Michigan.Rights management statement available at: http://library.mines.edu/digital/rights.htmlCalumet and Hecla Consolidated Copper CompanyCopper mines and miningMiningMiningScenes, undergroundUnderground miningStillImage