- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
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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 Schlumberger log based on the principle of shallow investigation; as its name implies it is markedly affected by material that lies in its immediate proximity. It depends for its operation on the forcing of a more or less horizontal beam of current into the formation. Its vertical resolution is about 6 in (15 cm) and it is almost impervious to the presence of a mud cake on the formation wall.
Industry:Mining
A science that deals with the life of past geological periods, based on the study of fossil remains of plants and animals, and gives information esp. about the phylogeny and relationships of modern animals and plants and about the chronology of the history of the Earth. Compare: paleobotany; paleoclimatology; paleogeography.
Industry:Mining
A scoria in which the vesicle walls have burst and are represented only by an extremely delicate three-dimensional network of glass threads.
Industry:Mining
A scraper mounted on an axle supported by a pair of wheels. It affords an easy means of conveying a loaded scraper to a dumping ground.
Industry:Mining
A scraper partially immersed in a vessel containing liquid used for removing any solids that may settle therein.
Industry:Mining
A scraper-box type of coal loader developed at the Mossfield colliery (Great Britain) in 1953. It consists of a hinged front, scooplike plate which elevates and deflects the broken coal onto an armored conveyor. On inclined faces, the loader is hauled by a double-drum Pikrose haulage.
Industry:Mining
