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As the mine was developed it was realised that the best ore was below the level sole and a sump was sunk to a depth of 129 ft and was equipped with hydraulic pumping and winding engines. These were supplied by Hathorne, Davey & Co, Leeds and were installed in 1880 - 81. Water was supplied from a reservoir on the surface some 534 ft above the engine room. This was carried in a 12" pipe 1800 ft down the hillside and then down a 240 ft vertical shaft into the mine. The pumping engine has two 12" cylinders each having a 7ft stroke and was designed to run at 6½" strokes per minute raising 500 gallons of water from a maximum depth of 360 ft. |
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The winding engine has a pair of 5½"
cylinders each with a 16" stroke which when running at 19½ revolutions
per minute could raise a two ton load at a speed of 60ft per minute.
It was equipped with two cages which worked on a reciprocating system
i.e. one up, one down in order to balance the work of the engine.
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Cage at the top of the flooded underground
shaft. The cable on the left is attached to a second cage which at the
bottom of the shaft 127 feet below.
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