These cast iron plunger pumps were used at Great Longstone China Clay Pit to pump clay and slurry from the bottom of a 150 foot shaft up to the works for refining and drying. The plunger pump was developed by Richard Trevithick and was first used to lift water from Cornwall's tin and copper mines, powered by Cornish beam engines.
This photograph is by carnkie and was uploaded July 16th 2009. © carnkie please do not copy or distribute without prior express permission.
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