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Hydraulic mining Britannica

Hydraulic mining, use of a powerful jet of water to dislodge minerals present in unconsolidated material, including mine tailings, placer deposits, alluvium, laterites (soil rich in iron oxides), and saprolites (soil rich in clay). It has also been applied to consolidated materials from sandstones through coal to hard rock. Hydraulic mining encompasses hydraulicking, sluicing, and educing.

Hydraulic mining Academic Kids

May 21, 2005 Hydraulic mining is a large-scale form of placer mining.Placer mining was the earliest form of gold mining in the foothills of the Sierra Nevada Mountains in northern California. Placer mining generally entailed searching for geologically ancient alluvial deposits (former stream beds).The classic image of the old prospector squatting next to a stream, swirling dirt and gravel around in a large

Hydraulic mining Colorado Encyclopedia

Hydraulic mining, a process by which gold-bearing dirt is blasted off of hillsides by high-pressure hoses, begins in Park County and other places.

Hydraulic mining Coal and coal mining Te Ara

Browse the Encyclopedia. This diagram shows how water was used in hydraulic mining. Safety considerations and the drive to obtain as much coal as possible from an area led to the progressive replacement of underground mining by opencast mines. Underground mining in New Zealand was also revolutionised by the use of high-pressure water jets

Hydraulic mining Coal and coal mining Te Ara

This diagram shows how water was used in hydraulic mining. Safety considerations and the drive to obtain as much coal as possible from an area led to the progressive replacement of underground mining by opencast mines. Underground mining in New Zealand was also revolutionised by the use of high-...

Hydraulic Mining, Mining Techniques, Underground Mining

Hydraulic Mining. Hydraulic mining, or hydraulicking, is a type of mining that uses water to displace rock material or move deposit. Formerly, the use of a huge volume of water had been urbanized by the Romans to take out overburden and then gold-bearing debris

Hydraulic Mine Operation, Jackson County

Mar 17, 2018 This photo, probably taken in the early 1910s, illustrates how thoroughly hydraulic mining reshaped the landscape of southwestern Oregon. Two massive monitors, also called giants, are shown blasting water into a placer deposit, washing the soil into flumes.

Mining Encyclopedia Britannica Britannica

Mining, process of extracting useful minerals from the surface of the Earth, including the seas. A mineral, with a few exceptions, is an inorganic substance occurring in nature that has a definite chemical composition and distinctive physical properties or molecular structure. (One organic

Hydraulic mining Colorado Encyclopedia

Hydraulic mining, a process by which gold-bearing dirt is blasted off of hillsides by high-pressure hoses, begins in Park County and other places.

Hydraulic mining Article about Hydraulic mining by The

The products divested by in the deal include hydraulic mining excavators, electric drive mining trucks, track and rotary blasthole drills, and the highwall miner, as well as the related parts and aftermarket service businesses, including the company-owned distribution locations.

Hydraulic mining Infogalactic: the planetary knowledge core

Hydraulic mining, or hydraulicking, is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. 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.. Hydraulic mining originated out of ancient Roman techniques that used water to excavate

Hydraulic mining Coal and coal mining Te Ara

This diagram shows how water was used in hydraulic mining. Safety considerations and the drive to obtain as much coal as possible from an area led to the progressive replacement of underground mining by opencast mines. Underground mining in New Zealand was also revolutionised by the use of high-...

Hydraulic mining placer mining with powerful streams of

Hydraulic mining is the cheapest known method of recovering gold. In four years the North Bloomfield Mining Company of California worked 325,000,000 cubic yards, which yielded only 2.9 cents of gold per cubic yard, and realized some profit. Very poor gravel will pay when the conditions are good.

Hydraulic mining diagram NZHistory, New Zealand history

Hydraulic mining diagram This diagram illustrates how water was used in mining at Charming Creek Mine. High pressure water was used to sluice away coal from the working face after blasting; it was flumed underground to a holding pool or sump, then pumped up to the bin using high pressure water.

Hydraulic Mine Operation, Jackson County

Mar 17, 2018 This photo, probably taken in the early 1910s, illustrates how thoroughly hydraulic mining reshaped the landscape of southwestern Oregon. Two massive monitors, also called giants, are shown blasting water into a placer deposit, washing the soil into flumes.

Gold Rush Encyclopedia

May 23, 2018 Hydraulic mining permanently scarred the landscape of northern California. These commercial innovations led to a change in the use of water that was crucial to the large-scale operations. Water became a precious commodity, adding further to the cost of the newer, more industrial, gold mining. The New York Herald reports on the Gold Rush

Chinese mining in Oregon The Oregon Encyclopedia

Hydraulic mining for gold first developed in the Sierra Nevada foothills. The method required large-capacity ditches, built into hillsides, to bring water diverted from a distant stream to a mine. Several hundred feet above the area to be mined (called the washing pit), the water’s high-volume flow was diverted into large-diameter iron pipes

Gold Rush New Georgia Encyclopedia

Jan 21, 2003 Gold mining in Georgia saw a brief resurgence in the 1850s, when miners brought the hydraulic mining technique back from California. However, the mining industry again fell into a slump during the Civil War (1861-65), and the Dahlonega Mint closed.

Hydraulic mining definition of Hydraulic mining by The

Hydraulic mining synonyms, Hydraulic mining pronunciation, Hydraulic mining translation, English dictionary definition of Hydraulic mining. 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. Hydraulic mining Also found in: Encyclopedia, Wikipedia. a system of mining in which

Mining The Canadian Encyclopedia

Apr 07, 2009 The Canadian Encyclopedia, s.v. "Mining", Last Edited March 04, 2015, As accessible high-grade deposits declined, more elaborate technologies such as dredging and hydraulic mining (i.e. washing away sediment with high pressure water streams) required larger capital investments. Dredging, for instance, was key to maintaining production in

Fraser River Gold Rush The Canadian Encyclopedia

Nov 27, 2006 Unlike the Cariboo Gold Rush (1861–67), which attracted many Canadians, the Fraser Rush was an extension of California mining society. By the 1850s, placer mining in California had depleted free gold. Miners accustomed to the glory days of the California Rush were marginalized by capital-intensive hydraulic mining.

Hydraulic mining : definition of Hydraulic mining and

The modern form of hydraulic mining, using jets of water directed under very high pressure through hoses and nozzles at gold-bearing upland paleogravels, was first used by Edward Matteson near Nevada City, California in 1853 during the California Gold Rush. [3] Matteson used canvas hose which was later replaced with crinoline hose by the 1860s. [4] In California, hydraulic mining often brought

Hydraulic mining Infogalactic: the planetary knowledge core

Hydraulic mining, or hydraulicking, is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. 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.. Hydraulic mining originated out of ancient Roman techniques that used water to excavate

Hydraulic mining Coal and coal mining Te Ara

This diagram shows how water was used in hydraulic mining. Safety considerations and the drive to obtain as much coal as possible from an area led to the progressive replacement of underground mining by opencast mines. Underground mining in New Zealand was also revolutionised by the use of high-...

Hydraulic mining : definition of Hydraulic mining and

The modern form of hydraulic mining, using jets of water directed under very high pressure through hoses and nozzles at gold-bearing upland paleogravels, was first used by Edward Matteson near Nevada City, California in 1853 during the California Gold Rush. [3] Matteson used canvas hose which was later replaced with crinoline hose by the 1860s. [4] In California, hydraulic mining often brought

Hydraulic mining placer mining with powerful streams of

Hydraulic mining is the cheapest known method of recovering gold. In four years the North Bloomfield Mining Company of California worked 325,000,000 cubic yards, which yielded only 2.9 cents of gold per cubic yard, and realized some profit. Very poor gravel will pay when the conditions are good.

hydraulic mining WyoHistory

The Online Encyclopedia of Wyoming History. hydraulic mining. Atlantic City: Boom-bust Survivor. Ever since its 1868 founding, Atlantic City, Wyo., near South Pass, has endured mining booms that brought thousands and busts so severe that only a couple of residents stayed. Of three early gold-mining towns in the area, one is a ghost town

Hydraulic mining diagram NZHistory, New Zealand history

Hydraulic mining diagram This diagram illustrates how water was used in mining at Charming Creek Mine. High pressure water was used to sluice away coal from the working face after blasting; it was flumed underground to a holding pool or sump, then pumped up to the bin using high pressure water.

33 U.S. Code § 668 “Hydraulic mining” and “mining by

For the purposes of this chapter “hydraulic mining” and “mining by the hydraulic process” are declared to have the meaning and application given to said terms in the State of California. (Mar. 1, 1893, ch. 183, § 8, 27 Stat 508 .)

Gold Rush New Georgia Encyclopedia

Jan 21, 2003 Gold mining in Georgia saw a brief resurgence in the 1850s, when miners brought the hydraulic mining technique back from California. However, the mining industry again fell into a slump during the Civil War (1861-65), and the Dahlonega Mint closed.

Fraser River Gold Rush The Canadian Encyclopedia

Nov 27, 2006 Unlike the Cariboo Gold Rush (1861–67), which attracted many Canadians, the Fraser Rush was an extension of California mining society. By the 1850s, placer mining in California had depleted free gold. Miners accustomed to the glory days of the California Rush were marginalized by capital-intensive hydraulic mining.

Gold Mining and its Environmental Impacts

hydraulic mining was preformed (Hill 1999). Another important invention that was made around the same time as the development of hydraulic mining was the production of nozzles specially designed to produce high-power jets of streams. In order to break through the thick deposits of gravel

Hydraulic Fill an overview ScienceDirect Topics

Hydraulic fill is produced by passing the by-product from mineral processing in metalliferous mines through hydroclones to dewater and remove the fine fraction of the material (this process is called des). After the fines (or slimes) have been removed, the grain size distribution curves for typical Australian hydraulic fills fall within a very narrow band, which is typically within the

Hydraulics Wikipedia

Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids.At a very basic level, hydraulics is the liquid counterpart of pneumatics, which concerns gases. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the applied engineering using

non-renewable energy National Geographic Society

Underground mining is used when the coal is located below the surface of the Earth, sometimes 300 meters (1,000 feet) deep—that’s deeper than most of the Great Lakes! Miners take an elevator down a mineshaft. They operate heavy machinery that cuts the coal out of the Earth and brings it above ground.

Dredging Technology EOLSS

©Encyclopedia of Life Support Systems (EOLSS) Dredging is a well established craft involving floating equipment to deepen, create, or maintain waterways for commercial shipping and navigation, and for other purposes, such as hydraulic mining, landfill and reclamation, and environmental protection. It has