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pfm Member
Dorothea Beam Egine, the last Cornish Beam Engine contructed in the world, finished in 1905. Capable of pumping water from 500ft depth. Original boilers still intact. Superceded with electric pumps in the 1950s
220112 Dorothea Beam Engine by David Yeoman, on Flickr
220112 Dorothea Boilers Mono by David Yeoman, on Flickr
Both GFX50S+GF30mm
The definitive account of the construction of the Holman Cornish Engine and sinking of the shaft by the excellent Iain Robinson.