Hydraulic mining

Greenland, P. Hydraulic Mining in California, Arthur H Clark Spokane, WA, 2000. 

Marsden, S.S. Walter, J. A Laboratory Study of the Use of Subsurface Hydraulic Mining of Tar Sands in Proc. Ann. Tech. Conf. SPE, Society of Petroleum Engineers Richardson, TX, 1986, SPE paper 861080. 

Hydraulic mining Landscape damage, river pollution... 

Using mining methods as basis to classify, there are three types opencast mining, underground mining and hydraulic mining. They are as follows. 

A laboratory study of the use of subsurface hydraulic mining of tar sands, in Proceeding of the Annual Technical Conference SPE, Society of Petroleum Engineers, Richardson, TX, SPE paper 861080. 

Geldem von, O. (1928). Proposed rehabilitation of hydraulic mining in California. Yuba CA. 

From 1889 to 1890, he was a chief engineer of the Hydraulic Mining Irrigation Co., New Mexico. 

Stanley, O.G. (1965). Brief history of hydraulic mining, gold dredging, creation of the... 

Wadsworth, H.H. (1906). Discussion of The control of hydraulic mining in Cahfomia by the Federal Government. Trans. ASCE 57 31-33. 

Hydraulic Mining. The method used to win china clay a high-pressure (2 MPa) jet of water is aimed at the exposed vertical clay face and the clay is washed down. The suspension is then pumped to settling tanks where the impurities (chiefly mica) settle out. The purified suspension of china clay is then concentrated, filtered, and dried. Hydraulic Press. A machine used for dry pressing, or semi-dry pressing the pressure (up to 100 MPa) is applied hydraulically to the top, and sometimes also to the bottom, mould-plate. Such presses are used, for example, in dry pressing basic refractories. 

The extraction of minerals from placer deposits formed by deposition from water has obvious environmental implications. Placer deposits can be mined by dredging from a boom-equipped barge. Another means that can be used is hydraulic mining with large streams of water. One interesting approach for more coherent deposits is to cut the ore with intense water jets and then suck up the resulting small particles with a pumping system. 

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