- 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 ...
A term commonly used by petroleum-field drillers to designate the act or process referred to by diamond drillers as deflecting a borehole.
Industry:Mining
A term commonly used to indicate ore of chromium, consisting esp. of the mineral chromite or chromium-bearing minerals, such as chrome mica or chrome diopside.
Industry:Mining
A term covering the various electrical processes for the industrial working of metals; e.g., electrodeposition, electrorefining, and operations in electric furnaces.
Industry:Mining
A term describing a condition in which the ventilating air current is returned to the face repeatedly along a circuitous path. It may happen in the case of auxiliary fans or booster fans. If the intake end of the air pipes of a blowing fan is not placed well to the intake side of the main air current, the foul air from the heading may be recirculated to the face again and again. With an exhausting auxiliary fan, the end of the pipes is kept well to the return side of the main air current.
Industry:Mining
A term describing that variation in quality of materials of manufactured goods that is stable and determinate, so that statistical analysis and prediction can be applied to it.
Industry:Mining
A term descriptive of electrical machines, switches, and fittings demanded legally for use in fiery mines in Great Britain. Enclosing boxes with accurately fitted wide flanges are used.
Industry:Mining
A term encountered in disputes over what constitutes compensable "working time" under Federal laws. Portal literally means "entrance" and, in underground coal mining, portal refers to the mine mouth or entry at the surface. Hence, portal-to-portal as a descriptive term means strictly elapsed time from entry through the portal to exit on return.
Industry:Mining
