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United States Bureau of Mines
المجال: 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 ...
A frame designed to be held rigidly in place by roof jacks or timbers, and with provisions for attaching a shaker conveyor panline to the movable portion of the frame, which can be used to prevent jumping or side movement of the panline.
Industry:Mining
A frame in timbering in which the poling boards are supported by walings at their upper and lower ends.
Industry:Mining
A frame in which two sheaves are mounted so as to receive lines from opposite directions.
Industry:Mining
A frame of a shaft, or gallery, composed of four pieces of plank.
Industry:Mining
A frame provided with a number of parallel iron bars that are employed to saw stone.
Industry:Mining
A frame set at or just below ground level as a preliminary to the main timbering in an excavation.
Industry:Mining
A framed structure having columns and beams rigidly connected; there are no hinged joints in this type of structure.
Industry:Mining
A framework to discharge the coal or mineral from a mine car or a wagon by elevating the rear end and to deliver the load from its front end onto a screen, chute, or bunker below track level.
Industry:Mining
A fraudulent imitation of lapis lazuli (lazurite) obtained by staining pale-colored jasper or ironstone with ferrocyanide. Also known as German lapis.
Industry:Mining
A free-flowing high explosive widely used for charging bulled holes and large-diameter (well drill) holes.
Industry:Mining