Hydraulic mining

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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

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The transition of mining operations from the fully depleted Central Dune orebody to the South Dune orebody took place over a two-week period and involved moving the hydraulic mining units and commissioning of the new pumps, pipes and power supply.
California thus turned early to hydropower, encouraged by Gold Rush-era innovations in hydraulic mining that moved water across mountainsides.
The performance characteristics of Kluberplex ELM 44-80 Arctic benefit equipment such as off-road haulers, wheel loaders, earth movers, hydraulic mining excavators, electric cable excavators, cranes, and transport and conveyor systems.
' Due to the Kwale Phase 2 project shutdown and reflecting on the ongoing transition to hydraulic mining as the sole mining method, the hydraulic mining unit tonnes mined reduced marginally from the prior quarter's 1.2 million tonnes to 1.1 million tonnes and dozer mining unit tonnes mined declined from 1.7 million tonnes to 0.8 million tonnes for the quarter,' the firms quarterly activities report showed.
More factors influencing the hydraulic mining of the coal seam have been taken into account after the improvement, including not only the zonation of the water-resisting layer on the seam floor but also the residual water pressure, which is likely to be neglected.
Unlike the impact of dredging, there is greater consensus among environmental historians on hydraulic mining's effect on vegetation especially the desolation of the landscape which many argues to be remediless and appalling [21].
More than 62 tons have been recovered to date from short ephemeral drainages mostly within a 25 km2 area, primarily through hydraulic mining during the period 1900-1930.
For example, researchers from Jilin University, China, have demonstrated the suitability of the borehole hydraulic mining method for extraction of deep-deposited oil shale [3, 4].
These include the Dolaucothi Gold Mines near Pumpsaint where the Romans used hydraulic mining (use of vast amounts of soil stripping water to reveal bedrock), the Carmarthenshire Amphitheatre, Y Pigwn marching camp near Trecastle and Caratacus' former lair at Garn Goch.