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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 ...
Aventurine quartz containing inclusions of chromian muscovite.
Industry:Mining
Aventurine quartz containing inclusions of chromian muscovite.
Industry:Mining
Balance rope direct from drum drive.
Industry:Mining
Balance that weighs ore or coal pulp in a container of known volume; graduated to show pulp density directly.
Industry:Mining
Balance weight ropes having direct connection with hoisting ropes.
Industry:Mining
Ball clays that are relatively refractory; used in producing crucibles that will withstand high temperatures.
Industry:Mining
Banded agate with straight parallel layers of differing tones of gray; not a syn. for onyx. Compare: onyx
Industry:Mining
Banded calcite from near Thebes, Egypt.
Industry:Mining
Banded cream to black and gray to purple chocolate-colored slate from Massachusetts.
Industry:Mining
Banded jasper of varying colors.
Industry:Mining
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