- 行业: 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 ...
The height of a convector enclosure measured from the bottom of the enclosure to the top of the outlet.
Industry:Mining
The height of a vertical column of water whose weight, if of unit cross section, is equal to the hydrostatic pressure at a given point; static head as applied to water.
Industry:Mining
The higher grades of copper regulus or matte obtained in the English process of copper smelting. Included are the following four varieties, which are distinguished by appearance and copper content: (1) blue, containing about 60% copper; (2) sparkle, about 74% copper; (3) white, about 77% copper; and (4) pimple, about 79% copper.
Industry:Mining
The higher the velocity of the air current, the greater will be the resistance to airflow. The resistance is nearly proportional to the velocity squared.
Industry:Mining
The highest point of a structural feature, e.g., of a dome or anticlinal crest. The axis of an anticline may have several culminations that are separated by saddles.
Industry:Mining
The highest quantity of combustible gases that, when mixed with a given quantity of air (or oxygen), will just support a self-propagating flame.
Industry:Mining
The highest rock formation of the Millstone Grit of South Wales, occurring immediately beneath the Coal Measures. Since all workable coal seams occur in the Coal Measures, it is useless to search for coal in these rocks, hence the miner's term.
Industry:Mining
The highest type of combined elevator and conveyor. It consists of two long-pitch roller chains joined by crossbars on which are hung the buckets in such a way that they can be completely turned over.
Industry:Mining
The highest velocity at which water may be carried safely in a canal or other conduit; the highest velocity throughout a substantial length of a conduit that will not scour.
Industry:Mining
