- 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 ...
Any underground opening separated from a free surface by a distance greater than three times the size of the opening in the direction of the free face.
Industry:Mining
Any undesirable substance not normally present in air, water, coal, or other materials or present in an excessive amount.
Industry:Mining
Any undesirable substance not normally present in air, water, coal, or other materials or present in an excessive amount.
Industry:Mining
Any unit that does its work in a machine by spinning and does not drive other parts mechanically.
Industry:Mining
Any vehicle with very large, low-pressure tires enabling it to be used in swamps.
Industry:Mining
Any wheeled vehicle, usually self-propelled, used to transport heavy articles or materials. In mining, usually applied to dump and/or bottom-dump semitrailers used to transport mined waste and ore materials. The number of types of these haulage units varies widely from the small 2-st (1.8-t) standard dump truck to the unit with capacity 200 st (181 t) or greater. For larger stripping operations, where the haulage conditions are not too rugged, a diesel tractor pulling a bottom-dump semitrailer of capacity 40 to 3394 60 st (36 to 54 t) is most common. The newer trucks are equipped with power steering, power brakes, torque converters, and automatic transmissions.
Industry:Mining
Any winding or hauling rope from which the load upon it has been removed.
Industry:Mining
Apparatus that is so constructed that, when installed and operated under the conditions specified by the certifying authority, any electrical sparking that may occur in normal working, either in the apparatus or in the circuit associated therewith, is incapable of causing an ignition of the prescribed flammable gas or vapor.
Industry:Mining
Apparatus used aboard ships to bring up quantity samples of the ocean bottom deposits and sediments.
Industry:Mining
Apparatus used to determine the position of rest of a freely swinging shaft plumbline.
Industry:Mining
