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United States Bureau of Mines
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 ...
Pseudophite, a compact massive variety of clinochlore.
Industry:Mining
Published tables giving the differences of latitude and departure for different angles.
Industry:Mining
Puffs or explosions of gas in blast furnaces.
Industry:Mining
Pull of gravitation on a mass of 1 g. This varies slightly with the acceleration (g) due to gravity differences in various localities, but is approx. 981 dyn.
Industry:Mining
Pulsed infusion shot firing.
Industry:Mining
Pump with two chambers that are alternately filled and discharged. An automatic ball valve admits steam, which forces out the charge from the filled chamber while the other is filling as its steam condenses.
Industry:Mining
Pumping or draining the water from mines. Compare: dewatering
Industry:Mining
Purchase of stocks, notably metals, for delivery at an agreed future date and price.
Industry:Mining
Pure silver, 1,000 parts fine or 100% silver.
Industry:Mining
Pure, uncoined, lump silver of various sizes, usually stamped with a banker's or assayer's seal; used by the Chinese as a medium of exchange and reckoned by weight. The larger 3208 lumps, sometimes called shoes, are boat shaped and weigh about 1 lb troy (370 g).
Industry:Mining
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