THE COLORADO PHILAHLLPHIA CHLORINATION MILL, COLORADO CITY. 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: 3869px × 1869px
Location: Colorado, USA
Photo credit: © Historic Illustrations / Alamy / Afripics
License: Licensed
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