Browse Subjects

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Calumet and Hecla

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Water, Lakes, Persons New Coal Dock

Scanned: December 21, 2009


Mass Copper

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Water, Rivers, Persons Mass of native copper on the Ontonagon River [Artistic rendering of a group of canoes moving down a river (Michigan Tech Centennial Page xvi)]

Scanned: December 13, 2007


Calumet and Hecla

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Water, Lakes, Persons Intake Shaft at C & H Waterworks [A diver, assisted by several men, prepares to investigate the lake.]

Scanned: December 18, 2009