- المجال: 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 trade name in El Dorado County, California, for a blue quartz that may be cut as a gemstone.
Industry:Mining
A trade term for a lot, parcel, or shipment of diamonds without regard to quality, composition, or quantity.
Industry:Mining
A trademark for a form of the Venturi tube arranged to measure the flow of a liquid in pipes. Small tubes are attached to the Venturi tube at the throat and at the point where the liquid enters the converging entrance. The difference in pressure heads is shown on some form of manometer and from this difference and a knowledge of the diameters of the tubes, the quantity of flow is determined.
Industry:Mining
A trailer or semitrailer that dumps bulk material by opening doors in the floor of the body.
Industry:Mining
A trailer or semitrailer that dumps bulk material by opening doors in the floor of the body.
Industry:Mining
A trailing cable with a screen of metallic covering over each power conductor. This is the type now adopted in British coal mines.
Industry:Mining
A train of powder enclosed in cotton, jute yarn, and waterproofing compounds; used for firing a cap containing the detonating compound, which in turn sets off the explosive charge. The fuse burns at the rate of 2 ft/min (0.6 m/min). Used mainly for small-scale blasting in quarries and metal mines.
Industry:Mining
A trained worker who can detect sound or loose rivets by testing them with a hammer.
Industry:Mining
A tramline laid at such an angle that full skips running downhill will pull up the empties.
Industry:Mining
