- 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 ...
Parallel orientation of feldspar prism edges with the edge between two adjacent rhombohedral planes of quartz in graphic granite so that the c axis of the quartz forms an angle of 42 degrees 16' with the c axis of the feldspar.
Industry:Mining
Parallel to or in general direction of the dip of a bed, rock stratum, or vein.
Industry:Mining
Paralysis of the nerve center that controls breathing or a regular heartbeat. Some symptoms of electric shock are sudden loss of consciousness, absence of respiration or respiration that cannot be detected, weak pulse, and burns.
Industry:Mining
Part of a circuit that can be removed from it in order to break the circuit when there is no current flowing.
Industry:Mining
Part of an orebody opened by drifts and raises, and ready for breaking down.
Industry:Mining
Part of and physically associated with a known mineral deposit, but outside of the identified parts.
Industry:Mining
Part of the Comanchean, of the continental facies, including coal seams, occurring in western Canada.
Industry:Mining
Part of the reproduction organs of many coal measures' plants. There are two kinds, namely, megaspores (female) and microspores (male). They are found in most coal seams, particularly the dull layers. Megaspores vary from 1 to 5 mm in size, and microspores (or pollen grains) from about 0.01 to 0.1 mm.
Industry:Mining
Partially aerated flames, particularly when aerated in stages. Nonturbulent flow.
Industry:Mining
Partially crystallized magma; an aggregate of solid crystals lubricated by compressed water vapor.
Industry:Mining
