- 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 amount of drill water that escapes into porous or fractured borehole wall rocks and hence does not return and overflow at the collar of the borehole.
Industry:Mining
The amount of drilling fluid circulated through the drill string, generally expressed in gallons per minute.
Industry:Mining
The amount of energy required to crush a given quantity of material to a specified fraction of its original size is the same no matter what the original size. Compare: Rittinger's law
Industry:Mining
The amount of excavated material to be removed from a road section, after completing fills in that section.
Industry:Mining
The amount of fluid delivered through a permeable membrane in a specified time.
Industry:Mining
The amount of friction resulting from the drill rods rubbing against the walls of a borehole or the inside surface of the casing lining a borehole.
Industry:Mining
The amount of gravel that can be moved by a water cannon, or giant, in a 24-h day by a specified flow of water. The duty of giants varies considerably with local conditions, such as the height of the gravel banks, the nature of the gravel bedrock, head of water obtainable, size of jet, etc.
Industry:Mining
The amount of heat obtainable from a fuel and expressed, for example, in British thermal units per pound.
Industry:Mining
The amount of heat required to change 1 g of a substance at the temperature of its melting point from the solid to the liquid state without changing temperature.
Industry:Mining
The amount of liquid or gas circulated through the drill-string equipment in drilling a borehole. The amount of liquid circulated is expressed in gallons (or liters) per minute, 602 and the amount of a gas, as air, is expressed in cubic feet (or cubic meters) per minute.
Industry:Mining
