- 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 steel ring that has been accurately turned, heat treated, and polished. It is precisely calibrated in a testing machine by measuring its deflection for different loads and can be used for measuring applied loads on a structure.
Industry:Mining
A steel rock-cutting bit having fingerlike, fixed or replaceable, steel-cutting points affixed.
Industry:Mining
A steel rope made up of a number of loosely twisted four-strand ropes placed side by side, the lay of the adjacent strands being in opposite directions to secure uniformity in wear and to prevent twisting during winding. The strands are sewn together with steel wire.
Industry:Mining
A steel structure that revolves a mine car and discharges the contents, usually sideways, into a bunker or onto a screen.
Industry:Mining
A steel that shows a peculiar fracture and texture in the interior, different from that near the surface.
Industry:Mining
A steel tie bar used to join the ends of two point rails to hold them to gage in the proper position.
Industry:Mining
A steel tie bar used to join the ends of two point rails to hold them to gage in the proper position.
Industry:Mining
A steel upright or post used to support the nether roof at a longwall or other face. It usually incorporates a yielding device.
Industry:Mining
A steel wire rope, with wedge heads fixed to its ends, used instead of the normal steel rod in roof bolting. Also known as cable bolting. The rope has a diameter of about 7/8 in (2.2 cm) and a length from 15 to 20 ft (4.5 to 6 m).
Industry:Mining
A steel, carbon, or ceramic die in which the shape of a bit crown is incised and provided with pips, grooves, or holes in which diamonds are set and held by suction or an adhesive. Filling the die with a matrix alloy by a casting or a powder metal-sintering process affixes the shank to a diamond-inset bit crown having a shape conforming to that incised in the die.
Industry:Mining
