- 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 minimum tension in any portion of the carrying run of belt necessary to prevent excessive sag of the belt between belt idlers.
Industry:Mining
The minimum time for which electric current must flow in the fusehead of a detonator to ensure its ignition.
Industry:Mining
The minimum value of lateral earth pressure exerted by soil on a structure, occurring when the soil is allowed to yield sufficiently to cause its internal shearing resistance along a potential failure surface to be completely mobilized.
Industry:Mining
The minimum width necessary for the extraction of ore regardless of the actual width of ore-bearing rock.
Industry:Mining
The mining and/or selling of coal produced from coal owned by others and without permission or knowledge of the owner.
Industry:Mining
The mining of coal by surface mining methods as distinguished from the mining of metalliferous ores by surface mining methods; the latter is commonly designated as openpit mining.
Industry:Mining
The mining of coal pillars left to support the roof during development mining, often resulting in cave-ins.
Industry:Mining
The mining of marine mineral deposits, classified as unconsolidated deposits such as gravel, mineral sands, or nodules; consolidated deposits such as outcrops, veins, or crusts; and fluid that is seawater or hydrothermal fluids; from, on, or beneath the seabed, whether on the continental shelf or in the deep ocean basins.
Industry:Mining
The mining of metals and minerals on locations other than the Earth through space colonization of planets and moons.
Industry:Mining
The mining of river bars, usually between low and high waters, although the stream is sometimes deflected and the bar worked below water level.
Industry:Mining
