- 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 lode or vein from which alluvial cassiterite or gold may have been derived.
Industry:Mining
A lode or vein in which vugs or drusy cavities are of frequent occurrence.
Industry:Mining
A lode showing no surface outcrop, and one that cannot be found by any surface indications.
Industry:Mining
A lode which varies in inclination from the horizontal to about 15 degrees.
Industry:Mining
A log or marker placed to show a truck driver the spot to stop to be loaded.
Industry:Mining
A log that measures the relative quantities of potassium, thorium, and uranium present in the rocks penetrated by a borehole.
Industry:Mining