- Отрасли: 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 drive-type soil sampler with a split barrel; also a swivel-type double-tube core barrel, the inner tube of which is split.
Industry:Mining
A drive-type soil-sampling device that is essentially a headpiece, threaded to fit a drill rod, to which is attached a removable length of thin-wall brass or steel tubing. An example is the Shelby tube.
Industry:Mining
A drive-type, split-tube soil-sampling device, usually equipped with a flap or clack valve near the cutting shoe. Usually produced in sizes having outside diameters ranging from 4 to 6-5/8 in (10 to 17 cm).
Industry:Mining
A driving belt that has a twist between the driving and the driven pulleys causing a reversal of direction.
Industry:Mining
A driving connection in two or more wheels or shafts that will turn them at approx. the same relative speeds under any conditions.
Industry:Mining
A drop forged-steel device, with a tapered hole, which can be fastened to the end of a wire cable or rope and to which a load may be attached. It may be either the open- or closed-end type.
Industry:Mining
A drum containing planetary gearing that is used to control the motion of the rope drums on certain types of mining machines. In planetary gearing, which is used when a large ratio of speed reduction with only a few operating gears is required, some or all of the gear wheels in the train of mechanism have a motion about an axis and a revolution about the same axis.
Industry:Mining
A drum on which conductor cable is wound, including one or more collector rings and associated brushes, by means of which an electric circuit is made between the stationary winding on the locomotive or other mining device and the trailing cable that is wound on the drum. The drum may be driven by an electric motor, by a hydraulic motor, or mechanically from an axle on the machine.
Industry:Mining
A drum-type screen in which the pulp to be screened is delivered on the outside, the undersize passing through the screen and discharging through the open end.
Industry:Mining
