- 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 ...
Seams in the rock, which are usually invisible in the freshly quarried material, but which may open up in cutting or on exposure to the weather.
Industry:Mining
Searching for and attempting to recover, by the use of specially prepared tools, a piece or pieces of drilling equipment (such as sections of pipe, cables, or casting) that have become detached, broken, or lost from the drill string or have been accidentally dropped into the hole.
Industry:Mining
Section of wood, generally part of a small tree trunk, used for holding up rock in the roof of a mine.
Industry:Mining
Sections of hardened steel plates of various thicknesses (as desired) which are welded (or bolted) in areas of severe wear, such as the insides of feeders, crushers, transfer chutes, or any other area where mined material passes, creating abrasion, and threatens wearing of these areas.
Industry:Mining
Sediment composed of the oxides and hydroxides of iron and manganese, crystallized from aqueous solution. It is one of Goldschmidt's groupings of sediments or analogues of differentiation stages in rock analysis.
Industry:Mining
Sediment that has been brought to its places of deposition as separate particles by mechanical means. Water, wind, and ice are the agents commonly involved; the resulting rocks are conglomerate, sandstone, siltstone, shale, and certain limestones.
Industry:Mining
