- المجال: 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 ...
A gas-filled, radiation-detection tube in which the pulse produced is proportional to the number of ions formed in the gas by the primary ionizing particle.
Industry:Mining
A gas-fired furnace esp. for the treatment of zinc ore that is high in lead.
Industry:Mining
A gate between the central gate and the end gates, particularly in double-double unit layouts.
Industry:Mining
A gate carried forward in the seam thickness only (which must be over 3 ft or 0.9 m), with cut-throughs as required to the main gate. The false gate has a short conveyor that 1153 takes the face conveyor coal and delivers it to the main gate conveyor through a crosscut a short distance behind the face. This layout enables the main gate rippings to be worked on three shifts.
Industry:Mining
A gate in a development face designed to be abandoned with a view to localizing the crush effect consequent on the winning of the coal immediately above or immediately below the development face.
Industry:Mining
A gate road at the upper end of an inclined longwall conveyor face; usually a tailgate.
Industry:Mining
A gate road conveyor that carries coal from one source or face only; i.e., from a singleunit or double-unit face.
Industry:Mining
A gate road equipped with a gate conveyor or a gate-end loader; the gate to which the face conveyors deliver their coal.
Industry:Mining
A gate road in longwall mining with a rib of solid coal along one side.
Industry:Mining
A gate used to vary size of opening so as to control the flow of material through the opening.
Industry:Mining
