- 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 ...
The couplet of distinct types of sedimentary rock, or the graded sequence of sediments, that form a unit bed or lamina in rhythmically bedded deposits. It implies no limit as to thickness of bed, lamina, or complexity, but the term should exclude groups of beds such as cyclothems and carries no time or seasonal connotation. Compare: cyclothem; varve.
Industry:Mining
The covering of an existing surface with a coating of bituminous binder covered by a layer of chippings or fine aggregate.
Industry:Mining
The crosscut that traverses the entire mining field and penetrates all deposits. There is such a crosscut at each level, and it is the main one for the level in question. It serves the same purpose as the shaft and thus must have correct cross section, and be particularly well constructed, as repairs to its support would hold up the transport of the entire level.
Industry:Mining
The cross-sectional area of a stream divided by its width at the surface.
Industry:Mining
The cross-sectional view of the cutting face portion of a coring bit when its profile is a full half circle, the radius of which is one-half the wall thickness or kerf of the bit face. Compare: single-round nose
Industry:Mining
The cross-sectional view of the cutting-face portion of a core bit when the profile is an arc having a radius equal to or greater than the wall thickness.
Industry:Mining
The crushing and spreading of the head of a timber pile not fitted with a driving band when driven into hard ground.
Industry:Mining
The crystal system that has the highest degree of symmetry; it embraces such forms as the cube and the octahedron.
Industry:Mining
