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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 ...
Radio signal unit used to control or communicate between scattered sections of mine, or to link isolated camp with other places.
Industry:Mining
Radioactive carbon, esp. carbon-14, but also carbon-10 and carbon-11.
Industry:Mining
Radioactive radium mineral found in Brazil.
Industry:Mining
Rail haulage cars for surface or mine shaft operations that are used to carry ore and equipment to and from the digging site.
Industry:Mining
Rain and surface water that seeps downward through outcropping porous and fissured rock, fault planes, old shafts, or surface drifts.
Industry:Mining
Random error equally likely to be plus or minus, and if of small dimensions, reasonably likely to be compensated by further errors. In contrast, systematic or biased errors all fall on the same side of correct measurement and may therefore accumulate and produce serious discrepancies.
Industry:Mining
Rapid oxidation-roast of finely ground sulfide ores, which are caused to fall through rising heated air.
Industry:Mining
Rapid removal of sulfur, as finely divided sulfide mineral is allowed to fall through a heated oxidizing atmosphere. Flash roasting or melting is widely used in the copper industry.
Industry:Mining
Rate of heat flow per unit area per unit temperature difference.
Industry:Mining
Ratio between the resistance or load raised by a machine, and the applied force. Mechanical advantage divided by velocity ratio gives the efficiency of the machine.
Industry:Mining
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