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Hydraulic mining

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
a system of mining in which the force of a jet of water is used to wash down a bank of gold-bearing gravel or earth.

See also: Hydraulic



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Using the hydraulic mining machines, the windy picks, was hard work.
Major investment was required for both; hydraulic mining needed water storage by dams and delivery by contoured ditches, in some cases over many kilometres; dredging needed assurance of grade and volume, which involved much costly drilling, equipment and engineering.
Another variation of placer mining is called hydraulic mining.
 
 
 
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