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The original methods to perform placer mining involved gold panning, sluice boxes, and rockers. Each method involves washing sand, gravel and dirt in water. Gold then settles to the bottom of the pan, or into the bottom of the riffles of the sluice box. The gold dredge is the same concept but on a much larger scale.
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 Kinzua Dam in Pennsylvania, with outlet works releasing water. A gatehouse, gate house, outlet works or valve house for a dam is a structure housing sluice gates, valves, or pumps (in which case it is more accurately called a pumping station). Many gatehouses are strictly utilitarian, but especially in the nineteenth century, some were very ...
A long sluice box runs along the mine. [16] The sluice box was used extensively during the California gold rush for larger scale operations. When streams became increasingly depleted, the grizzly and undercurrent variants of the sluice box were developed. The grizzly is a set of parallel bars placed at a 45-degree angle over the main sluice box ...
Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. [1] In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice boxes to remove the gold. It is also used in mining kaolin and coal.
Service Pump & Supply (SPS) was established January 31, 1980, by Danny and Barbara Vance. [1] In a rented 2500 square ft. building in Barboursville, WV and with a ½ ton pick-up for sales calls and deliveries, the company's objective was to sell Stanco MSHA pumps and service other brands to the coal mines of southern West Virginia and Eastern Kentucky.
Flowserve's heritage dates back to the 1790 founding of Simpson & Thompson by Thomas Simpson, later to become Worthington Simpson Pumps, one of the companies that became part of BW/IP. [8] The company was created in 1997 with the merger of two fluid motion and control companies: BW/IP and Durco International.
Like a sluice box, the rocker box has riffles and a carpet in it to trap gold. It was designed to be used in areas with less water than a sluice box. The mineral processing involves pouring water out of a small cup and then rocking the small sluice box like a cradle, thus the name rocker box or cradle. Rocker boxes must be manipulated carefully ...