- 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 ...
A system employing radio, telephones, and/or signals (audible or visual) for orderly and efficient control of the movements of trains of cars in mines.
Industry:Mining
A system fitted to a drag suction hopper dredge which disperses entrained gases from the overflow in a settling tank and discharges the degassed overflow below the surface. The resulting plume is normally compact and does not appear at the surface. Abbrev., ATOS.
Industry:Mining
A system for breaking down coal by which compressed air, generated locally by a portable compressor at 10,000 psi (69.0 MPa), is used in a releasing cylinder, which is placed in a hole drilled in the coal. Thus, slow breaking results, with no flame, in producing a larger percentage of lump coal than is made by using explosives. Its principal advantage is that it may be used with safety in gaseous and dusty mines.
Industry:Mining
A system for initiating blasting caps in which the energy is transmitted through the circuit by means of a gas detonation inside a hollow plastic tube.
Industry:Mining
A system for initiating blasting caps in which the energy is transmitted to the cap by means of a shock wave inside a hollow plastic tube.
Industry:Mining
A system for priming blast agents in which a core of priming material extends through most or all of the blasting agent charge length.
Industry:Mining
A system for the transportation of material, such as ore or rock, in buckets suspended from pulleys or grooved wheels that run on a cable, usually stationary.
Industry:Mining
A system in which a braking action is applied to an electric motor by causing it to act as a generator.
Industry:Mining
A system in which the carriers are supported by a cable and are not detached from the operating span. The travel of the carriers is wholly within the span.
Industry:Mining
A system in which the duct delivers the intake air to the face. The forcing system may be used with flexible ducting and simplifies arrangements for protecting the duct from blasting. The forcing system has the added advantage that the fan motor always works in intake air, and no special arrangements about fan drives are necessary.
Industry:Mining
