- 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 ...
Ores that contain both acid and basic gangue minerals in the proper ratio to form a suitable slag.
Industry:Mining
Organic debris deposited among marine sediments and modified by bacterial action in such a way as to form the source material of petroleum, or, under certain conditions, to form the kerogen of oil shales.
Industry:Mining
Originally applied to black powder loaded in bags, but now applied to a number of explosives so packed. The bags are long, cylindrical units about 6 in (15 cm) in diameter and weighing 12-1/2 lb (5.67 kg) apiece.
Industry:Mining
Originally defined as a syn. of norite, but now commonly used to mean a rock composed entirely of hypersthene; an orthopyroxenite. Not recommended usage.
Industry:Mining
Originally described by Stillman as fossil resin, but later shown by Stanley-Brown to be a fungus impregnated by resinous material.
Industry:Mining
Originally, a military mapping activity; now a precise survey maintained by government which maps land and building features of Great Britain in close detail.
Industry:Mining
Originally, only guhr dynamites to which were added salts containing water of crystallization, such as Glauber's salts, ammonium oxalate, etc., with the view of making them available in mines containing combustible gases.
Industry:Mining
