- 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 ...
Made up of similar parts or elements; of the same composition or structure throughout; uniform. Opposite of heterogeneous.
Industry:Mining
Magmatic differentiation resulting from the floating or settling, under gravity, of mineral crystals as they form. Compare: fractional crystallization
Industry:Mining
Magnesium-rich ultramafic volcanic rock of high temperature origin. The term was originally applied by Viljoen and Viljoen (1969) to basaltic and ultramafic lavas near the Komati river, Barberton Mountain Land, Transvaal, South Africa. Nickel-copper sulfide mineral deposits may be associated with komatiites.
Industry:Mining
Magnetic flux equivalent in the meter-kilogram-second (mks) system of the maxwell in the centimeter-gram-second (cgs) system. One weber equals 10 <sub>8</sub>maxwells. Abbrev., wb.
Industry:Mining
Magnetic property of a substance maintained without external excitation.
Industry:Mining
Magnetic quality analogous to resistance in the flow of electric current.
Industry:Mining
Main fans produce the general ventilating current of the mine, and are generally of large capacity and permanently installed. They are assisted by natural ventilation, if present, 1890 and, if necessary, by booster fans. They are installed to perform a certain duty, and great attention is paid to their efficiency since this governs the cost of performing the duty.
Industry:Mining
Main underground haulage road through which tubs are hauled by an endless chain.
Industry:Mining
