- 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 ...
In a mixture of gases, the total pressure is equal to the sum of the pressures that the gases would exert separately.
Industry:Mining
Determination of the particle-size distribution of a soil, sediment, or rock by screening, sieving, or other means of mechanical separation; the quantitative expression of the sizefrequency distribution of particles in granular, fragmental, or powdered material. It is usually expressed in percentage by weight (and sometimes by number or count) of particles within specific size limits.
Industry:Mining
Mineral breakage along specific crystallographic planes in some specimens due to twinning, exsolution lamellae, or chemical alteration.
Industry:Mining
Crushed stone of regular sizes below 3 in (7.6 cm) for road construction, commonly with tar or asphalt binder. The sizes below 1 in (2.54 cm) are more specif. defined as chippings.
Industry:Mining
Multidecked platform suspended near bottom of shaft during sinking. It carries part of the equipment in use and can be raised or lowered as required during blasting, mucking, wall concreting, etc.
Industry:Mining
One of a set of tests carried out in a gallery at the Safety in Mines Research Station at Buxton, England. The tests are made to determine the likelihood or limits at which an explosive will ignite gas or coal dust, before it can be placed on the official permitted list.
Industry:Mining
Determination of the stresses in the component parts of a structure when subjected to load.
Industry:Mining
In stress analysis by the photoelastic method, lines of equal difference of principal stress, appearing as colored streaks.
Industry:Mining
In the monoclinic system, the form consisting of two planes parallel to the vertical and orthodiagonal axes.
Industry:Mining
Movement of ore by water flowing through pipelines. Includes hydraulic hoisting.
Industry:Mining
