STAMPS AND PLATES IN A COLORADO MILL. from the Article THE EVOLUTION OF MINING AND ORE TREATMENT IN COLORADO. By Thomas Tonge. from The Engineering Magazine Devoted to Industrial Progress Volume XVIII 1899-1900 The Engineering Magazine Co

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Size: 3720px × 2888px
Location: Colorado, USA
Photo credit: © Historic Illustrations / Alamy / Afripics
License: Licensed
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