- 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 removal of slimes from coal or a mixture of coal and water, however accomplished.
Industry:Mining
The removal of subsoil water by open intercepting ditches and drain pipes. The distance between subsoil drains is a maximum in sandy soils and a minimum in clay.
Industry:Mining
The removal of suspended particles from gases by the aid of electrical discharges, using alternating or direct current. Alternating current agglomerates the suspended particles into larger aggregates, causing rapid settling, esp. if the gases are quiescent. Direct current is used when large volumes of rapidly moving gas, such as occur in smelter flues, are treated. The suspended particles within a strong electric field of constant polarity become charged and are then attracted to a plate (electrode) of opposite charge.
Industry:Mining
The removal of the overburden and mining of the ore in one or more benches, the ore face being broken by blasting and the broken ore loaded by hand, shoveling machine, or steam shovel. The name "terrace or bench open-pit working" has been suggested.
Industry:Mining
The removal of the top layer of soil or of irregularities in the ground surface at new mine or opencast sites.
Industry:Mining
The removal of timbers and supports from abandoned or worked out mine areas. This work is highly specialized and should be attempted only by the most experienced persons. Generally, timbers are pulled by a timber puller that permits the operator to be under a safe roof while doing this work. In some cases, where so much weight is resting 983 on the timber that it cannot be removed safely, it must be shot out by use of explosives, and the roof allowed to fall.
Industry:Mining
