- 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 method of stowing in inclined conveyor faces, in which the material is brought into the upper gate (usually the tailgate) and arranged to slide down on trays which are moved forward as each track is filled.
Industry:Mining
A method of supplementing the main ventilating current in a mine by using a small fan to draw air from the main current and force it through canvas or metal pipe to some particular place, such as the ends of drifts, crosscuts, raises, entries, or other workings driven in a mine.
Industry:Mining
A method of surveying in which the lengths of the three sides of a series of touching or overlapping triangles are measured (usually by electronic methods) and the angles are computed from the measured lengths. Compare: triangulation
Industry:Mining
A method of timbering mine roadways by means of horizontal and upright bars.
Industry:Mining
A method of transporting miners to the coal face in special chairs that move continuously on an endless conveyor.
Industry:Mining
A method of traversing by which the azimuth of the survey lines is obtained from the instrument.
Industry:Mining
A method of traversing in which the magnetic bearings of survey lines are separately obtained by reference to the magnetic needle.
Industry:Mining
A method of treating hard water by adding selected chemical substances that break down the offending impurities, the residue being passed on in solution in harmless or less harmful form, driven off as a gas, or precipitated for subsequent retention in an incorporated filter. The general reagents are lime or soda or a combination of both with or without the addition of zeolites or colloids.
Industry:Mining
A method of treating mine timber in which the timber is painted with a preservative or is merely dipped into a tank of preservative. Preservatives used are creosote, zinc chloride, sodium fluoride, and other chemicals.
Industry:Mining
A method of treating mine timber to prevent decay in which the timber is immersed in a tank of hot preservative and then in a tank of cold preservative. The preservatives used are creosote, zinc chloride, sodium fluoride, and other chemicals.
Industry:Mining
