- 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 diametrical reduction in the size of a bit or reaming shell caused by wear through use.
Industry:Mining
The diamonds set in a bit at or along the line formed by the intersection of the face or leading surface of a bit crown and the straight-walled side surfaces of the bit crown or shank. Compare: kerf stone
Industry:Mining
The difference between the actual electrode potential, when appreciable electrolysis begins, and the reversible electrode potential.
Industry:Mining
The difference between the excavation diameter and the finished diameter in the clear; the extra space allowed to accommodate the permanent shaft lining.
Industry:Mining
The difference between the greatest and least of the three principal stresses.
Industry:Mining
The difference between the gross unit recoverable value and the cost of mining, treating, and marketing ore; in other words, the net operating profit.
Industry:Mining
The difference between the observed value of gravity at a point and the theoretically calculated value. It is based on a simple gravity model, usually modified in accordance with some generalized hypothesis of variation in subsurface density as related to surface topography.
Industry:Mining
The difference between the outside diameter of a bit or core barrel and the outside set or gage diameter of a reaming shell.
Industry:Mining
The difference between the outside diameter of a core and the inside diameter of the core-barrel parts through which the core passes or enters; also, the annular space between the inner and outer tubes in a double-tube core barrel.
Industry:Mining
The difference between the percentage ash of a product of a separation and that shown by the washability curve (based on the reconstituted feed) of a product with the same properties (usually percentage of ash).
Industry:Mining
