Hand Drilling from the Article The Newhouse Tunnel [Argo Tunnel ] at Idaho Springs, Colorado USA by Arthur Lakes from The Engineering Magazine DEVOTED TO INDUSTRIAL PROGRESS Volume X October 1896 NEW YORK The Engineering Magazine Co

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Size: 2224px × 1708px
Location: USA
Photo credit: © Historic Illustrations / Alamy / Afripics
License: Royalty Free
Model Released: No

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