- 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 ...
Self-actuating mechanism at shaft head by which a skip is emptied and its contents moved away to the next stage of handling.
Industry:Mining
Self-contained lamp (such as a battery-operated lamp) that may be worn on the person or carried about freely.
Industry:Mining
Self-regulating pumps capable of dealing with water at fairly high temperatures and pressures. They are used to return heater condensate to the feed line instead of to waste.
Industry:Mining
Semibasic refractories made from olivine and magnesia; consist essentially of forsterite, including about 50% magnesia, 39% silica, 6% ferrous oxide, and 5% of other oxides.
Industry:Mining
Semiprecious and precious stones, cleaved carbon, or other diamonds, the sharp edges and corners of which have been rounded and blunted by tumbling action in a barrelshaped vessel.
Industry:Mining
Sensitive weighing system in which a beam rides on a fulcrum, and supports a load of unknown weight at one end which is counterbalanced by known weights at the other end.
Industry:Mining
Sensitivity of an explosive to detonate when impacted. See: fallhammer test
Industry:Mining
Sensitivity to propagation of an explosive can be ascertained by a method called the Ardeer double-cartridge, or ADC, test. The ADC test consists of firing an explosive cartridge with a standard detonator and determining the maximum length of the gap across which the detonation wave will travel and detonate a second, or receptor, cartridge. Both the primer and the receptor cartridges should be of the same composition, diameter, and weight.
Industry:Mining
Separate compartments connected with a furnace; they are arranged for preheating the gas and the air used for fuel.
Industry:Mining
Separate strands of the same rope or cable used to connect two sets of sheaves.
Industry:Mining
