United States Bureau of Mines

Industri: 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 ...

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multiple openings

Any series of underground openings separated by rib pillars or connected at frequent intervals to form a system of rooms and pillars.

Industry:Mining

uphill shaker conveyor

Any shaker conveyor that is so designed as to have the proper stroke for shaking the maximum amount of coal up a grade. On certain types of shaker conveyors, this requires the replacement of certain parts of the drive to secure the desired stroke, rather than replacing the entire drive unit.

Industry:Mining

portable drill

Any size drill outfit that is wheel-, skid-, or track-mounted so that it can be moved readily as a unit.

Industry:Mining

loupe

Any small magnifying glass or lens mounted for use in the hand, held in the eye socket, or attached to spectacles and used to study minerals and rocks. Also spelled lupe, loup, loop.

Industry:Mining

continuous smelter

Any smelter that is fed constantly and that discharges frit in a continuous stream. The passage of the material through the smelter is generally effected by gravitational flow.

Industry:Mining

batch smelter

Any smelter that operates as a periodic unit, being charged, fired, and discharged according to a predetermined cycle.

Industry:Mining

chalk rock

Any soft, milky-colored rock resembling white chalk, such as talc, calcareous tufa, diatomaceous shale, volcanic tuff, or white limestone.

Industry:Mining

hard solder

Any solder that melts only at a red heat; used in soldering silver, etc.

Industry:Mining

prismoid

Any solid, bounded by planes, whose end faces are parallel. Usually understood to include also figures whose bounding surfaces are warped surfaces.

Industry:Mining

nuclide

Any species of atom that exists for a measurable length of time. A nuclide can be distinguished by its atomic weight, atomic number, and energy state. The term is used synonymously with isotope. A radionuclide is the same as a radioactive nuclide, a radioactive isotope, or a radioisotope.

Industry:Mining