- المجال: 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 seismic wave that propagates by alternating compressions and rarefactions in an elastic medium; the motion is in the direction of propagation. It is the type that carries sound.
Industry:Mining
A seismic wave that propagates by alternating compressions and rarefactions in an elastic medium; the motion is in the direction of propagation. It is the type that carries sound.
Industry:Mining
A seismograph with which the horizontal component of the earthquake can be defined making use of the torsion of a vertical suspension thread on which a stationary mass is fastened offcenter.
Industry:Mining
A seismometer that is used for measuring vibrations of structures from other than seismic causes.
Industry:Mining
A seismometer with response linearly proportional to the acceleration of earth materials with which it is in contact.
Industry:Mining
A selected distant point from which the bearings to other points can be measured at a survey station.
Industry:Mining
A selective agglomeration process under development, in which the liquid carbon dioxide-water interface is used for the differentiation and separation between coal and mineral matter. The resultant clean coal is a low-sulfur and low-ash content product of relatively low moisture content.
Industry:Mining
A selective agglomeration process under development, in which ultra-fine grinding of the feed coal to 15 mu m releases almost all the associated impurities prior to agglomeration with a low-molecular-weight hydrocarbon. The agglomerant is then recovered and recycled.
Industry:Mining
A selective mine dust-sampling instrument. It collects the airborne dust sample in two components. The fraction larger than 5 mu m in size is separated from the total cloud in a size selector. The instrument collects some grams of respirable dust by filtration of the mine air through a fine pore ceramic thimble.
Industry:Mining
