hydraulic mining was done extensively throughout california and other gold districts during the mid 1800's. although devastating to the environment this gold mining method allowed miners to process massive amounts of gravel and recover gold from bench deposits that could not be economically mined otherwise.
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the invention of hydraulic mining is generally attributed to edward e. matteson near nevada city california in february of 1852 (may philip: 1970). within 5 years of this invention the mining engineers of the sierra nevada had constructed five thousand miles of ditches and flumes to supply the water needed to power the monstrous hydraulic […]
the new mining corporations developed extraction techniques that were frighteningly efficient techniques that destroyed the rivers and caused california's first environmental disasters. massive derricks lifted rock and sand--obliterating the formerly pristine rivers. the worst of the large scale mining techniques came in 1853 - hydraulic mining.
the romans created a hydraulic mining system that literally blew millions of tons of material away and ancient sappers dug under mega walls and brought a whole castle down. but how was this possible
hydraulic mining in california. by craig e. crouch rocklin california . hydraulic mining uses jets of water to break down gold-laden gravel banks and to wash the material through gold-separating devices (sluices and under-currents). it was one of the dominant forms of the california gold mining industry from the mid-1850s until 1884 when it was halted by federal injunction.