- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
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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 ...
The mechanism that imparts the reciprocating motion to a shaker conveyor trough line. The term is frequently shortened to drive, such as shaker drive, uphill drive, etc.
Industry:Mining
The mechanism used with the automatic duckbill through which the extension and retraction of the shovel trough are controlled.
Industry:Mining
The meeting of two wave systems resulting in increased amplitude (constructive interference) if they are in phase, i.e., crest to crest, and decreased amplitude (destructive interference) if they are out of phase, i.e., crest to trough. In polarized-light microscopy (PLM), phase differences are generated when white light passes through an anisotropic (i.e., doubly refracting) crystal or crystal fragment, these differences being determined primarily by birefringence, light wavelength, and crystal thickness. Waves of light in different parts of the visible spectrum interfere both constructively and destructively when resolved in the microscope analyzer to give an interference color. Since anisotropic minerals have a range of birefringence, interference colors are useful as an aid to their identification.
Industry:Mining
The metal channel on which a heavy drill is fed forward as drilling proceeds.
Industry:Mining
The metal product from reducing titanium tetrachloride with magnesium in the Kroll process. It is called sponge because of its spongelike appearance. Sodium-reduced metal also is referred to as sponge.
Industry:Mining
The method by which the bench is removed from above, as with a dragline.
Industry:Mining
The method by which the bench is removed from below as with a power shovel.
Industry:Mining
