- Industry: 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 ...
A whitish to reddish-gray aventurine oligoclase with internal yellowish or reddish firelike reflections.
Industry:Mining
A whitish to reddish-gray aventurine oligoclase with internal yellowish or reddish firelike reflections.
Industry:Mining
A whitish, gray; yellow, green, or pale reddish; brittle; tasteless; inodorous hydrocarbon; melts at 44 degrees C; soluble in alcohol and ether; may be distilled without decomposition, boiling at 92 degrees C.
Industry:Mining
A whitish, gray; yellow, green, or pale reddish; brittle; tasteless; inodorous hydrocarbon; melts at 44 degrees C; soluble in alcohol and ether; may be distilled without decomposition, boiling at 92 degrees C.
Industry:Mining
A wide helical blade fixed on a shaft and screwed into the ground by means of a winch or capstan.
Industry:Mining
A wide irregular drift or entry, in firm dry ground, in which the roof is supported by pillars of natural earth or by artificial pillars of stone, without using timber.
Industry:Mining
A wide-basin valley, in an arid or semiarid region, that contains abundant alluvium in the form of fans, flood plains, and lake deposits.
Industry:Mining
A widely used cutter loader in which the ordinary jib of the longwall coal cutter is replaced by a shear drum which cuts a web from 16 to 22 in (40.6 to 55.9 cm) depending on its width. The machine travels on an armored conveyor and requires a prop-free front for working. It shears the coal in one direction and the front coal is loaded by a plow deflector, and then returns along the face (without cutting) and loads the remainder of the broken coal. The ordinary Anderton is suitable for coal seams more than 3 ft 6 in (1.1 m) thick.
Industry:Mining
