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United States Bureau of Mines
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 canary-yellow mineral, (UO<sub>2</sub>)(Mo<sub>2 6+</sub>O<sub>7</sub>).3H<sub>2</sub>O ; luster, vitreous; uneven fracture; does not fluoresce.
Industry:Mining
A cap lamp designed for full self-service. This lamp, weighing 6-5/8 lb (3.0 kg), has a 4- V lead-acid battery in a hard rubber case with covers of stainless steel or nickel-plated hard brass. The switch is magnetically operated and is situated in a sealed plastic moulding. A 4-W bulb burning 11 h or a 2-W bulb burning 14 h is used. The lamp is of one-piece construction and no dismantling is needed to charge the accumulator.
Industry:Mining
A cap specially insulated to ensure reliability of firing when used in wet work.
Industry:Mining
A cap specially insulated to ensure reliability of firing when used in wet work.
Industry:Mining
A capillary variety of cuprite in fine, slender interlacing fibrous crystals.
Industry:Mining
A capillary variety of cuprite in fine, slender interlacing fibrous crystals.
Industry:Mining
A capillary variety of cuprite in fine, slender interlacing fibrous crystals.
Industry:Mining
A capillary variety of cuprite in fine, slender interlacing fibrous crystals.
Industry:Mining
A cappel in which the end of the winding rope (separated into a brush) is embedded in a plug of white metal inside a socket.
Industry:Mining
A car for coal, gravel, etc., shaped like a hopper, with an opening to discharge the contents.
Industry:Mining