- 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 sum of the natural ventilating power plus the effective (or air) horsepower of all fans in series. When the circuit is divided and fans are in parallel, the total ventilating power of each split is worked out separately, the natural and fan powers being added; finally the power of each circuit is summed to give the total ventilating horsepower.
Industry:Mining
The sum of the neutrons and protons in a nucleus. It is the nearest whole number to the actual atomic weight of the atom.
Industry:Mining
The sum of the processes that result in the wearing down of the surface of the Earth, including wear by running water, solution, and wind action.
Industry:Mining
The sum of the sensible and latent heat components that must be removed from a space to maintain desired conditions.
Industry:Mining
The sum of the times required for actual rock drilling, setting up and withdrawal, moving drills from hole to hole and machine delays. The overall drilling time is a better basis for estimating drilling efficiency than penetration speed alone.
Industry:Mining
The sum of the weights of material correctly included in the products of a sizing or density separation, expressed as a percentage of the weight of the feed to the separator (and equal to 100 minus the "total of misplaced material").
Industry:Mining
The sum of the weights of the misplaced material in the products of a sizing or density separation, expressed as a percentage of the weight of the feed. When three products are made in a single separator, the total of misplaced material will be the sum of the weight of material wrongly placed in each of the three products, expressed as a percentage of the feed to the separator.
Industry:Mining
The superficial layer of the Earth's crust above the water table that is subjected to the destructive agents of the atmosphere and in which soils develop. Compare: zone of cementation
Industry:Mining
