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United States Bureau of Mines
行业: 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. Maliciously setting fire to a coal mine.
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. Old abandoned workings.
Industry:Mining
Eng. Ore broken from veinstone by means of a small hammer.
Industry:Mining
Eng. Pillars of coal that have passed through the various stages of creep.
Industry:Mining
Eng. Pillars of masonry carrying a winding drum or pulley.
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
Eng. Said of a mine when an explosion of combustible gases has taken place.
Industry:Mining
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