- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
Surface mining in which the material mined is removed from the bed of a natural body of water.
Industry:Mining
Surface mining that progresses in a narrow zone following the outcrop of a coal seam in mountainous terrain, and the overburden, removed to gain access to the mineral commodity, is immediately placed in the previously mined area, such that reclamation is carried out contemporaneously with extraction.
Industry:Mining
Surface-active substance that immunizes solids against a parting liquid.
Industry:Mining
Surplus water discharged from a washery, usually to waste (after settlement of solids in suspension).
Industry:Mining
Survey relating to land boundaries and subdivisions, made to create or to define the limitations of a title, and to determine a unit suitable for transfer. Includes surveys involving retracements for the identification, and resurveys for the restoration, of property lines. (The term "cadastral" is practically obsolete; may be found in older historical records; current usage is "land survey" or "property survey.")
Industry:Mining
Survey station the level of which has been officially fixed with reference to the ordnance datum, the arbitrary mean sea level at Newlyn in Cornwall, England.
Industry:Mining
Surveying in which account is taken of the figure and size of the Earth and corrections are made for Earth curvature; the applied science of geodesy. It is used where the areas or distances involved are so great that results of desired accuracy and precision cannot be obtained by plane surveying.
Industry:Mining
Suspension of suitably shaped metal ingots as anodes in an electrolytic bath, alternated with sheets of the same metal in a refined state or inert metal, which act as starters or cathodes. Impurities remaining on the anodes are detached as anode slime or are dissolved in the electrolyte from which they must be systematically removed (stripped).
Industry:Mining
Sw. A dense, compact, metamorphic rock consisting of microscopic quartz and feldspar crystals, with occasional phenocrysts and sometimes hornblende, chlorite, magnetite, and hematite. It is associated with gneisses, but is of obscure origin.
Industry:Mining
Switches used to some extent on narrow-gage industrial tramways; consisting of a pair of short switch rails, held only at or near one end and free to move at the other end to meet rails of straight or diverging track.
Industry:Mining
