Sentence examples for sluice box from inspiring English sources

Another hand method involves the use of a sluice box.

Gold miners in California at their sluice box, c. 1850.

They'll go from pan to sluice box to dredge.

By Michelle Nijhuis July 30 , 2013Gold miners in California at their sluice box, c. 1850.

It is not like a straight shot of water will surge down a sluice box created by two levees.

Water and placer dirt are introduced at the upper end of the inclined sluice box, and, as they flow downward, the specially shaped riffles agitate the current, preventing lighter material from settling while retaining the valuable heavy mineral.

The material is then delivered to concentrating plants or sluice boxes for mineral recovery.

This required the use of expensive and complex technology, including hydraulic monitors which directed jets of water to wash the gold-bearing hillsides into sluice boxes, and the development of a more permanent mining community.

A submerged gravel pump then sucks up the slurry of mud and water and raises it to a series of sluice boxes, or palongs, which slope downward and have baffles placed at intervals along their length.

The prospectors, dressed in ragged jeans and shorts, work much as their predecessors did during the 1840s gold rush: shovel and sieve soil into buckets, transfer it into sluice boxes and let river water run through it, leaving behind, they hope, gold traces.

Whereas anyone could attempt to dig prospect holes, a realistic mining operation required $1,500 ($41,000) for wood to be burned to melt the ground, along with around $1,000 $27,0000) to construct a dam, $1,500 $41,0000) for ditches and up to $600 $16,0000) for sluice boxes, a total of $4,600 $125,0000).