- Industry: 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 ...
Materials placed in stopes for the purpose of ground control, that is to arrest or regulate the closure of the walls.
Industry:Mining
Materials such as lead and concrete that are used for protection from X-rays or gamma rays in radiographic installations.
Industry:Mining
Materials that (a) would be needed to supply the military, industrial, and essential civilian needs of the United States during a national emergency, and (b) are not found or produced in the United States in sufficient quantities to meet such need.
Industry:Mining
Materials that consist mainly of SiO<sub>2</sub>and must be low in metallic oxides and alkalies.
Industry:Mining
Mathematical tables from which may be found, without computation, the horizontal and vertical components of a reading made with a transit and stadia rod.
Industry:Mining
Maximum aperture at entry to a coarse crushing machine at which the largest piece of rock fed to it can be gripped and acted on by the breaking system.
Industry:Mining
May be used by drillers as a syn. for drill bit revolutions per minute; drill rate; feed rate; feed ratio; feed speed; rate of penetration.
Industry:Mining
