- 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 ...
Eng. Long pieces of timber closely fitted together and fastened to oak curbs or rings forming part of a drum used in sinking through quicksand or soft ground. Compare: lag
Industry:Mining
Eng. Mining claims adjoining one another that have been grouped into one claim for more economical working.
Industry:Mining
Eng. Often applied to the highest bed in a quarry. In Dorset and Somerset, the upper division of the Inferior Oolite.
Industry:Mining
Eng. Pillars of coal that have passed through the various stages of creep.
Industry:Mining
Eng. Rectangular wooden valves about 24 in by 18 in by 1-1/2 in (61 cm by 46 cm by 3.8 cm) thick, hung vertically to the framework of the air chambers of a ventilator. A flap valve.
Industry:Mining