Sinking an exploratory bore hole using shearlegs, and a lever to work the borer. From 'The Popular Encyclopaedia' (London, 1862). Engraving.

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., archival, archive, bore, borer., boring, britain, encyclopaedia, engraving., exploration, exploratory, historical, history, hole, lever, metal, mining, popular, shearlegs, sinking, work