- 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 ...
The point on any rail beyond which a wagon or mine car cannot proceed without becoming an obstruction to another wagon or car traveling on the intersecting rail.
Industry:Mining
The point where coal or mineral is transferred from one conveyor to another.
Industry:Mining
The point where the alignment changes from a circular curve to a straight line or tangent; i.e., the point where the curve joins the second tangent. Abbrev., P.T.
Industry:Mining
The point where the alignment changes from a straight line or tangent to a circular curve; i.e., the point where the curve leaves the first tangent. Abbrev., P.C.
Industry:Mining
The point within a borehole at which a deflection or change in course is desired.
Industry:Mining
The polymorphic form of iron stable between 1,403 degrees F (762 degrees C) and the melting point (about 1,532 degrees F or 833 degrees C). The space lattice is the same as that of alpha iron and different from that of gamma iron.
Industry:Mining
The portion of a core that is not recovered. It may be the soft rock that crumbles and falls from the core barrel or the solid piece or pieces of core that drop to the bottom of a borehole after slipping out of the core barrel while the drill string is being pulled from the drill hole.
Industry:Mining
The portion of a lode lying between a level driven in a lode and the surface.
Industry:Mining
