- 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 Malayan term for hardwood pan shaped like a section of the surface of a sphere and used as a miner's pan in prospecting, sample washing, and manual concentration of cassiterite.
Industry:Mining
A manganoan variety of melanterite at the Lucky Boy Mine, Salt Lake County, UT.
Industry:Mining
A mania for seeking gold; applied specif. to the excitement caused by the discovery of gold in California in 1848-49.
Industry:Mining
A man-made marsh that is designed to be slow-draining so that specific species will flourish, primarily to replace natural wetlands that have been drained and filled prior to development. In mining, some constructed wetlands are designed to fix metals and other contaminants, primarily by the reduction of metal sulfates to sulfides, or the formation of oxides or carbonates. When the term is also applied to systems constructed without plants, they consist of buried substrates through which the contaminated water is passed under low oxygen or reducing conditions.
Industry:Mining
A man-made stone that has the same physical, optical, and chemical properties, and the same chemical composition, as the genuine or natural stone that it reproduces. Many gem materials have been made synthetically as a scientific experiment, but only corundum, spinel, emerald, rutile, garnet, quartz, chrysoberyl (alexandrite), opal, and turquoise have been made commercially and cut as gemstones for the jewelry trade.
Industry:Mining
A man-made stone that has the same physical, optical, and chemical properties, and the same chemical composition, as the genuine or natural stone that it reproduces. Many gem materials have been made synthetically as a scientific experiment, but only corundum, spinel, emerald, rutile, garnet, quartz, chrysoberyl (alexandrite), opal, and turquoise have been made commercially and cut as gemstones for the jewelry trade.
Industry:Mining
A manner of placing the boreholes, for the first shot in a tunnel, in which they are started about 2 to 3 ft (0.6 to 0.9 m) above the floor and pointed downward so that the bottom of the hole is about level with the floor.
Industry:Mining
