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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 ...
A bone ash or fireclay crucible somewhat larger than a cupel; used in assaying and in the metallurgical treatment of precious metals.
Industry:Mining
A book in which the official record of events or the type and characteristics of the rock penetrated by the borehole is entered.
Industry:Mining
A book in which the official record of events or the type and characteristics of the rock penetrated by the borehole is entered.
Industry:Mining
A book in which the official record of events or the type and characteristics of the rock penetrated by the borehole is entered.
Industry:Mining
A boosting charge placed in contact with a detonator to ensure detonation of the main charge.
Industry:Mining
A border of secondary minerals, produced by partial resorption and recrystallization, surrounding an original crystal constituent of a rock.
Industry:Mining
A border of secondary minerals, produced by partial resorption and recrystallization, surrounding an original crystal constituent of a rock.
Industry:Mining
A borehole drill bit having cutters that expand on pressure.
Industry:Mining
A borehole drill bit having cutters that expand on pressure.
Industry:Mining
A borehole drill bit having cutters that expand on pressure.
Industry:Mining
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