- 行业: Mining
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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 glassmaking, an orifice through which melted glass is ladled or taken out by a cuvette.
Industry:Mining
In glassmaking, the placing of a pot in a furnace for the purpose of melting metal.
Industry:Mining
In gold mines, auriferous slimes washed down from the floor (footwall) of the stope and sent to the mill.
Industry:Mining
In gravity and magnetic prospecting, the separation of two disturbing bodies at which some obvious indication in a measured quantity of the presence of two separate bodies ceases to be visible.
Industry:Mining
In gravity measurements, the corrections applied to observed gravity values because of differences of station elevation to reduce them to an arbitrary reference or datum level, usually sea level. The corrections consist of (1) the free-air correction, to take care of the vertical decrease of gravity with increase of elevation, and (2) the Bouguer correction, to take care of the attraction of the material between the reference datum and that of the individual station. In seismic measurements, the corrections are applied to observed reflection time values due to differences of station elevation in order to reduce the observations to an arbitrary reference datum or fiducial plane.
Industry:Mining
In gravity prospecting, the portion of a gravity effect remaining after removal of some type of regional variation; usually the relatively small or local anomaly components of the total or observed gravity field.
Industry:Mining
In Great Britain, a coal mine in no part of which below ground is the use of lamps or lights other than permitted lights lawful.
Industry:Mining
