- 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 body of sand and binder surrounding a cavity for the reception of molten metal in the production of castings. The cavity must have dimensional accuracy, and the sand surrounding it must be of sufficient stability to allow the metal to solidify in the exact shape of the impression. The production of the sand mold involves making a pattern of the part to be cast, and packing molding sand round the pattern, which when withdrawn leaves the cavity into which the metal is poured, cores being inserted to leave cavities where desired in the casting.
Industry:Mining
A body of subsurface water flowing through a cave or a group of communicating caves, as in a karstic region.
Industry:Mining
A body wave that travels through the interior of an elastic medium with particle motion perpendicular to the direction of propagation. Originally applied to earthquake seismology, where it was the second (hence: S) type of wave to arrive at a recording station.
Industry:Mining
A body wave that travels through the interior of an elastic medium with particle motion perpendicular to the direction of propagation. Originally applied to earthquake seismology, where it was the second (hence: S) type of wave to arrive at a recording station.
Industry:Mining
A body wave that travels through the interior of an elastic medium with particle motion perpendicular to the direction of propagation. Originally applied to earthquake seismology, where it was the second (hence: S) type of wave to arrive at a recording station.
Industry:Mining
A body wave that travels through the interior of an elastic medium with particle motion perpendicular to the direction of propagation. Originally applied to earthquake seismology, where it was the second (hence: S) type of wave to arrive at a recording station.
Industry:Mining
A body wave that travels through the interior of an elastic medium with particle motion perpendicular to the direction of propagation. Originally applied to earthquake seismology, where it was the second (hence: S) type of wave to arrive at a recording station.
Industry:Mining
A body wave that travels through the interior of an elastic medium with particle motion perpendicular to the direction of propagation. Originally applied to earthquake seismology, where it was the second (hence: S) type of wave to arrive at a recording station.
Industry:Mining
A bog, usually a sphagnum bog, frequently with grassy tussocks, growing in wet, poorly drained boreal regions, often areas of permafrost. Tamarack and black spruce are commonly associated with muskeg areas.
Industry:Mining
