- 行业: 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 ...
As used by geologists, it applies to material composed of grains of approx. uniform size. As used by engineers, it applies to material containing approx. equal amounts of several grain sizes.
Industry:Mining
As used by soil- and foundation-testing engineers, a syn. for core; cuttings; drill sludge.
Industry:Mining
As used by the diamond-bit manufacturing industry, the number or carat weight of new diamonds that must be added to the resettable diamonds salvaged from a worn bit in order to have enough to set a new bit.
Industry:Mining
As used by the diamond-cutting and diamond-bit-setting industries, the more or less flat diamond fragments produced by splitting a crystalline diamond along the octahedral plane. Such fragments are used primarily as a material from which special-shaped, diamond-pointed cutting tools are produced.
Industry:Mining
As used in flotation, a form of floating control system in which the manipulated variable may change at two or more rates each corresponding to a definite range of values of the actuating signal.
Industry:Mining
As used in flotation, a system in that the rate of change of the manipulated variable is a continuous function of the actuating signal.
Industry:Mining
As used in flotation, the component of proportional plus rate action or of proportional plus reset plus rate action for which there is a continuous linear relation between the rate of change of the controlled variable and the position of a final control element.
Industry:Mining
As used in geochemical prospecting, refers to the content of a metal that can be extracted from weathered rock, overburden, or stream sediment, by weak chemical reagents.
Industry:Mining
As used in geochemical prospecting, refers to the content of a metal that can be extracted from weathered rock, overburden, or stream sediment, by weak chemical reagents.
Industry:Mining
