- 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 boat equipped with a hoist and grapple for clearing obstacles from the path of a dredge.
Industry:Mining
A body is said to be in neutral equilibrium if on being slightly displaced it remains in its new position; e.g., a ball placed on a horizontal surface or a cone supported on its side on a horizontal surface.
Industry:Mining
A body is said to be magnetized when it possesses or can be made to possess that peculiar property whereby, under certain circumstances, it will naturally attract or repel a similar body in accordance with magnetic laws; e.g., drill rods become magnetized in use and will strongly attract other iron or steel articles.
Industry:Mining
A body of clay, usually roughly tabular in form like an ore vein, that fills a crevice in a coal seam. It is believed to have originated where the pressure was high enough to force 616 clay from the roof or floor into small fissures and in many instances, to alter and to enlarge them.
Industry:Mining
A body of clay, usually roughly tabular in form like an ore vein, that fills a crevice in a coal seam. It is believed to have originated where the pressure was high enough to force 616 clay from the roof or floor into small fissures and in many instances, to alter and to enlarge them.
Industry:Mining
A body of combustible gases known to exist in a mine, but not in circulation; sometimes fenced off.
Industry:Mining
A body of intrusive, pervasively deformed, or highly metamorphosed rock, generally nontabular and lacking primary depositional structures, and characterized by lithic homogeneity. It is mappable at the surface and traceable in the subsurface. For cartographic and hierarchical purposes, it is comparable to a formation. The name of a lithodeme combines a geographic term with a lithic or descriptive term, e.g., Duluth Gabbro. Compare: suite.
Industry:Mining
A body of magma that was formed by melting in response to heat generated by radioactive disintegration.
Industry:Mining
