A mile underground--loading and handling cars with copper ore, Calumet-Hecla Mines, Calumet, Mich.
A mile underground--loading and handling cars with copper ore, Calumet-Hecla Mines, Calumet, Mich.
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Photo credit: © The Protected Art Archive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: copper, load, miners, mines, mining, ore