- 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 ...
That part of a bit crown, bit shank, reaming shell, core barrel, drill rod, casing, or other piece of downhole equipment that when in use, comes in contact with the wall of a borehole.
Industry:Mining
That part of a chain mining machine that supports the cutting chain and extends under the coal; the bar provides the track for the cutting chain.
Industry:Mining
That part of a floodplain between two lines tangent to the outer bends of all the meanders. It is the zone within which channel migration occurs, as indicated by abandoned channels, accretion topography, and oxbow lakes.
Industry:Mining
That part of a loading machine that gathers the coal or rock and places it on the machine's elevating conveyor.
Industry:Mining
That part of a mass of igneous rock, near its contact with older rocks, that is finer grained than the rest of the mass, because it cooled more rapidly.
Industry:Mining
That part of a material passing a specified mesh screen and retained by some stated finer mesh.
Industry:Mining
That part of a mine roof that has to be taken down to give headroom on roadways.
Industry:Mining
That part of a panel wall between the windowsill and the support of the panel wall.
Industry:Mining
