- Industry: Mining
- Number of terms: 33118
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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 ...
In Japan, black ore. The kuroko deposits consist of intimately mixed zincblende, galena, and barite, associated (in places) with large masses of pyrite and gypsum.
Industry:Mining
In jigging, stratification of particles by size with largest uppermost; in streaming, rolling effect of transporting current that arranges particles with smallest nearest feed end.
Industry:Mining
In Johannsen's classification of igneous rocks, any light-colored, relatively rare mineral, or mineral occurring in small quantities, such as apatite, muscovite, corundum, fluorite, and topaz.
Industry:Mining
In kriging, the process of approximating the area of a block by a finite array of points.
Industry:Mining
In law, an unqualified title to property and the unquestioned right to immediate and unconditional possession thereof. Applies to mining claims and properties.
Industry:Mining
In leveling, the station is the point at which the staff is held and not the position of the instrument. The operation is one of carrying forward a known level, hence the backsight is a reading taken on the staff at a known elevation and the last sight from each station is called the foresight. All other readings refer to intermediate sights. Leveling sections may be referred to bench marks or to arbitrary levels, but in all cases they must be checked either by closing on the starting point or by starting and finishing on convenient bench marks.
Industry:Mining
In long-distance pumping of liquids or mineral slurries, an intermediate pump station.
Industry:Mining
In longwall mining of a coal seam, a face with no posts between the coal and the conveyor used to remove it.
Industry:Mining
