- 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 ...
Devices for measuring the gravitational force or acceleration or its gradient at any point. They are of three principal types: (1) a static type in which a linear or angular displacement is observed or nulled by an opposing force, (2) a dynamic type in which the period of oscillation is a function of gravity and is the quantity directly observed, or (3) a gradient-measuring type, for example, Eotvos torsion balance.
Industry:Mining
Devices for minimizing scour. These include brushwood held in place by wooden pegs, embankments, grass and withy planting, groins, mattresses, revetments, and riprap.
Industry:Mining
Devices in which continuous helical blades arranged about shafts force the material up an inclined trough against a stream of water introduced at the higher end. This action carries away the soluble material occurring with the material and dumps the washed product over the higher end of the trough.
Industry:Mining
Devices that prevent a detonation initiated in one part of a system from propagating to another.
Industry:Mining
Devoid of any color, as is pure water, a pane of ordinary window glass, or a fine diamond; therefore distinctly different from white, as in milk or white jade. As only transparent objects can be colorless, and no opaque object can be colorless, such terms as white sapphire and white topaz are misnomers. Rock crystal is a colorless variety of quartz; milky quartz is a white variety.
Industry:Mining
Diagram showing the stress distribution in a reinforced concrete beam in accordance with the theory of ultimate load.
Industry:Mining
Diagram used in construction work to show the location of digging and filling sites, and the distances over which earth and materials are to be transported.
Industry:Mining
Dialysis assisted by the application of an electric potential across the semipermeable membrane. Two important uses of electrodialysis are in water desalination and in removing electrolytes from naturally occurring colloids such as proteins. Compare: electroosmosis
Industry:Mining
Diameter of cylindrical section of hydrocyclone. Also diameter of inlet orifice if round. Dimensions or area in given inches or square inches if opening is rectangular.
Industry:Mining
