- 産業: 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 5 ft (1.5 m) length of heavy half-round rod forming the link between the wedgeorienting coupling and the drill-rod swivel coupling on an assembled Thompson retrievable borehole-deflecting wedge.
Industry:Mining
A 5% solution of nitric acid in absolute ethyl or methyl alcohol, used for the general etching of normal carbon steels.
Industry:Mining
A 5% solution of nitric acid in absolute ethyl or methyl alcohol, used for the general etching of normal carbon steels.
Industry:Mining
A back slip in a coal seam containing a clayey deposit. See also: back slip.
Industry:Mining
A back-and-forth motion of a machine that continues to face in one direction.
Industry:Mining
A bacterial strain that catalyzes the oxidation of ferrous iron (Fe<sub>+2</sub>) to ferric iron (Fe<sub>+3</sub>).
Industry:Mining
A bacterial strain that catalyzes the oxidation of sulfur to sulfate (SO<sub>4 -2</sub>).
Industry:Mining
A bailer used in borehole-cementation work, provided with a valving device that empties the contents of the bailer (cement) at the bottom of a borehole.
Industry:Mining
