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United States Bureau of Mines
Industry: 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 grader equipped with a collecting device and elevator, by which the loosened material can be loaded to spoil banks or into vehicles for transport.
Industry:Mining
A gradual and uniform decrease in size, as a tapered socket, a tapered shaft, a tapered shank.
Industry:Mining
A graduated horizontal rotation axis attached to a microscope stage for observation and measurement of optical properties of small crystals. Compare: goniometer; universal stage.
Industry:Mining
A graduated measuring scale for determining the number of board feet in rough-sawed lumber.
Industry:Mining
A graduated rod used in measuring the vertical distance between a point on the ground and the line of sight of a surveyor's level.
Industry:Mining
A graduated rod used with an instrument having stadia hairs to measure the distance from the observation point to the place where the rod is positioned.
Industry:Mining
A graduated rod used with an instrument having stadia hairs to measure the distance from the observation point to the place where the rod is positioned.
Industry:Mining
A graduated scale printed on transparent paper, which, when used in the prescribed manner, enables one to determine the true angle a borehole is inclined from readings taken directly on the etch plane in an acid bottle. This eliminates the need for a protractor or goniometer and for a capillarity-correction chart.
Industry:Mining
A graduated tape, steel or linen, usually in 50-ft or 100-ft (15-m or 30.4-m) lengths; used by engineers, builders, surveyors, etc.
Industry:Mining
A graduated vessel of glass for determining the rate of evaporation of a liquid placed in it, in a given time and exposure.
Industry:Mining
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