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A drywasher is like a highbanker, [clarification needed] since it uses a motor and a form of sluice, but it has no need for water. It drywasher operates by the use of air. [ 1 ] By forcing air to flow up through the material as it moves down the sluice, the heavier materials, like gold , will stay at the bottom and get trapped by the riffles ...
A sluice gate. A sluice (/ s l u s / SLOOS) is a water channel containing a sluice gate, a type of lock to manage the water flow and water level. It can also be an open channel which processes material, such as a river sluice used in gold prospecting or fossicking. A mill race, leet, flume, penstock or lade is a sluice channeling water toward a ...
The South Forty-Foot Drain, also known as the Black Sluice Navigation, is the main channel for the land-drainage of the Black Sluice Level in the Lincolnshire Fens. It lies in eastern England between Guthram Gowt and the Black Sluice pumping station on The Haven , at Boston .
The 11 components of the thematic resources listing were added on the National Register of Historic Places in 1984. [1]They are: Cross Rock Rapid Sluice; Dead Timber Ford Sluices
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is of Scots origin, and was inherited from the earlier technology of mill ponds and watermills , with penstocks diverting pond waters to drive the mills.
The sluice was built in the centre of the old syphon sluice channel, with a pumping station on either side of it. Three pump sets were installed, with space for a fourth. Each consisted of a 1,000 bhp (750 kW) Crossley diesel engine coupled to an 8 ft 6 in (2.6 m) Gwynnes pump, which could pump 840 tons per minute, or 1,234 megalitres per day ...