- 行业: Mining
- Number of terms: 33118
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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 vehicle on rubber tires or continuous treads to transfer raw materials, such as coal and ore, from loading machines in trackless areas of a mine to the main transportation system.
Industry:Mining
A vein alternately cutting through the strata of country rock and conforming with them.
Industry:Mining
A vein alternately cutting through the strata of country rock and conforming with them.
Industry:Mining
A vein discovered after the original vein on which a claim is based.
Industry:Mining
A vein discovered subsequent to the one on which a mining claim was based; an incidental vein. Compare: discovery vein
Industry:Mining
A vein filled with a succession of crusts of ore and gangue material.
Industry:Mining
A vein following the bedding in sedimentary rocks, or a mineralized permeable stratigraphic zone below an impervious bed. Compare: blanket vein; manto; sheet ground.
Industry:Mining
A vein formed by the filling of a fissure caused by contraction resulting from the drying or cooling of the surrounding rock.
Industry:Mining
A vein formed by the repeated filling of a channelway and its reopening by the development of fractures in the zone undergoing mineralization.
Industry:Mining
