Man-engine or movable ladder adopted in Cornish mines. The movable ladder was powered by the steam engine at the pit head and moved with the regular stroke of the engine. In this model either side of the shaft is fitted with platforms a stroke' length apa

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Size: 2072px × 3543px
Photo credit: © Photo12/Ann Ronan Picture Library / Alamy / Afripics
License: Licensed
Model Released: No

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