- 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 ...
An atmosphere created behind mine seals when the supply of oxygen is completely cut off, thereby bringing combustion to an end.
Industry:Mining
An atmosphere-supplying device that provides the wearer with respirable air from a source that is outside of the contaminated area.
Industry:Mining
An atmosphere-supplying respirator in which the respirable-gas supply is not designed to be carried by the wearer (formerly called supplied-air respirator).
Industry:Mining
An atmosphere-supplying respirator that admits respirable gas to the facepiece only when a negative pressure is created inside the facepiece by inhalation.
Industry:Mining
An atmosphere-supplying respirator that provides a continuous flow of respirable gas to the respiratory inlet covering.
Industry:Mining
An atom or a group of atoms combined in a radical or molecule that carries a positive or a negative electric charge as a result of having lost or gained one or more electrons. It may exist in solution, usually in combination with molecules of the solvent, or out of solution; it may be formed during electrolysis and migrate to the electrode of opposite charge, or it may be formed in a gas and be capable of carrying an electric current through the gas.
Industry:Mining
An atomic emission spectroscopy analytical technique where liquid solutions are passed through a quartz tube surrounded by a high-frequency induction coil for heating the sample to high temperatures. It is an important method for measuring trace element concentrations.
Industry:Mining
An attachment to a surveyor's transit with which an angle of inclination is measured in terms of the tangent of the angle instead of in degrees and minutes. It may be used as a telemeter in observing horizontal distances.
Industry:Mining
An attribute of surface texture of a rock, characterized by high luster and strong reflected light, produced by agents, such as desert or glacial polish, or by artificial grinding and smoothing; e.g., marble or granite.
Industry:Mining
