- 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 ...
(Somerset, England) Brown iron ore, Brendon Hills. Apparently a color term, since the two varieties of ore are black and potty.
Industry:Mining
(Somerset, England) Stone hewn into shape and faced ready for building. Building stone with one side rough faced, as opposed to hammer-and-punch dressed.
Industry:Mining
Some minerals or rocks are greasy or soapy to the touch, e.g., talc, graphite, steatite, or soapstone.
Industry:Mining
Some plants develop peculiar diagnostic symptoms that can be interpreted directly in terms of probable excesses of a particular element in the soil. Geobotanical indicators are either plant species or characteristic variations in the growth habits of plant species that are restricted in their distribution to rocks or soils of definite physical or chemical properties. They have been used in locating and mapping ground water, saline deposits, hydrocarbons, and rock types, as well as ores.
Industry:Mining
Some transported gossans are simply colluvial accumulations of fragments of normal gossan that have moved down the slope from the site of weathering. Another variety of an entirely different origin is effectively a fossil spring or seepage deposit, where at one time iron-rich ground water has precipitated massive limonite at or near the daylight surface.
Industry:Mining
Sometimes affect employment in alien countries by giving immunity from some laws. May affect working conditions.
Industry:Mining
