- 行业: 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 loading stage or structure with a double vibrating action that causes the coal or minerals to settle down in a mine car while being loaded. This settlement increases the car-carrying capacity and reduces spillage during transit.
Industry:Mining
A loading stage or structure with a double vibrating action that causes the coal or minerals to settle down in a mine car while being loaded. This settlement increases the car-carrying capacity and reduces spillage during transit.
Industry:Mining
A loamlike substance, between a resin and wax in character; C<sub>50</sub>H<sub>84</sub>O<sub>3</sub>; very impure and sandy as found in a brown coal at Gesterwitz, near Weissenfels, Germany. It crystallizes in white needles from ether and boiling absolute alcohol, and melts above 100 degrees C.
Industry:Mining
A local and sudden flood or torrent of relatively great volume and short duration, overflowing a stream channel in a usually dry valley (as in a semiarid area), carrying an immense load of mud and rock fragments, and generally resulting from a rare and brief but heavy rainfall over a relatively small area having steep slopes. It may also be caused by ice jams and by dam failure.
Industry:Mining
A local change of approx. 180 degrees in the direction of the regional dip.
Industry:Mining
A local increase above the normal variation in the chemical composition, distribution, ecological assemblage, or morphology of plants, indicating the possible presence of an ore deposit or anthropomorphic contamination.
Industry:Mining
A local indicator plant for copper in Arizona, observed over the outcrop of the San Manuel copper deposit. Here the distribution of this species is confined to copper-rich soil, and its population density is closely proportional to the copper content of the soil.
Industry:Mining
A local name for comparatively pure high-grade limonite or brown iron ore in Cambro- Ordovician limestones in the Shenandoah Valley of Virginia.
Industry:Mining
