- Industry: 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 trade name for a geotechnical process that uses vibration to compact clean sands and gravels. The vibration is combined with a water jet to give a high degree of compaction.
Industry:Mining
The transformation of a high-energy gamma ray into a pair of particles (an electron and a positron) during its passage through matter.
Industry:Mining
The transformation of one element into another. Radioactive decay is an example. Transmutation can also be accomplished by bombardment of atoms with high-speed particles.
Industry:Mining
The transgression, across time planes or biozones, by a rock unit whose age differs from place to place; the state or condition of being diachronous.
Industry:Mining
The transmission of power by means of rope gearing, as distinguished from belt drive.
Industry:Mining
The transport and placement of high-concentration, low-slump material by positive displacement through pipelines by pumps, similar to those used for concrete pumping.
Industry:Mining
The transport of coal, ore, workers, and materials underground by means of locomotivehauled mine cars. The locomotive may be powered by battery, diesel, compressed air, trolley, or some combination such as battery-trolley or trolley-cable reel.
Industry:Mining
The transport of coal, pulp, or mineral by the energy of flowing water in semicircular or rectangular channels. The gradient should not be less than 3 degrees . Coal movement in flumes commences at a water velocity of about 3 ft/s (0.9 m/s), but in practice a velocity of at least 6 ft/s (1.8 m/s) is arranged.
Industry:Mining
The transportation of coal or minerals from the working face to the shaft bottom. Haulage usually implies trams, tubs, or mine cars drawn by horses, locomotives, electric or compressed-air haulage engines. Conveyors are not generally regarded as a haulage method.
Industry:Mining
The transportation of mined coal from the working face to an intermediate haulage. It is accomplished by shuttle cars, conveyors, locomotives, and mine cars, or by combinations of such equipment. See: primary haulage.
Industry:Mining
