- 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 intersection of the axial plane of a fold with the surface of the Earth or any other specified surface.
Industry:Mining
The intersection of two vein or fracture systems at an acute angle.
Industry:Mining
The interval of geologic time represented by or involved in producing a stratigraphic unit, an unconformity, the range of a fossil, or any geologic feature or event.
Industry:Mining
The introduction of a supplementary roast heap between each two regular heaps, so that, if left untouched, there would be a continuous and unbroken roast heap the entire length of the roast yard.
Industry:Mining
The introduction of carbon into the surface layers of mild steel by heating in a current of gas high in carbon--usually hydrocarbons or hydrocarbons and carbon monoxide.
Industry:Mining
The introduction of feldspar into a rock, or the replacement of other rock-forming minerals by feldspar. Material for the feldspar may come from the country rock or be introduced by magmatic or other solutions.
Industry:Mining
The inversion of one crystalline assemblage of components from one symmetry to another; e.g., calcite to aragonite.
Industry:Mining
The investigation of a mine to determine the possibility of an explosion occurring by reason of the kind, size, purity, and dryness of the coal dust along the mine passages and the presence or absence of combustible gases. It also determines the degree of the hazard of an explosion from natural conditions and of one arising through the neglect or ignorance of the mine personnel. The purpose of such investigations is to make specific recommendations for reducing that hazard to a negligible point by appropriate methods and continued diligence.
Industry:Mining
