- 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 spiral tool, shaped like a carpenter's wood-boring auger, with the bottom end shaped like the cutting end of a diamond point or mud bit. The tool is rotated inside a casing to loosen and clean out debris or to loosen and drill through tough clay at the bottom of a borehole.
Industry:Mining
A spiral tool, shaped like a carpenter's wood-boring auger, with the bottom end shaped like the cutting end of a diamond point or mud bit. The tool is rotated inside a casing to loosen and clean out debris or to loosen and drill through tough clay at the bottom of a borehole.
Industry:Mining
A spiral tool, shaped like a carpenter's wood-boring auger, with the bottom end shaped like the cutting end of a diamond point or mud bit. The tool is rotated inside a casing to loosen and clean out debris or to loosen and drill through tough clay at the bottom of a borehole.
Industry:Mining
A spiraled crack in a drill core caused by torque in a blocked bit or core barrel. Compare: torsion break
Industry:Mining
A spongy type of free gold found in the gossan above gold-silver-telluride deposits.
Industry:Mining
A spring whose water contains enough mineral matter to give it a definite taste, in comparison to ordinary drinking water, esp. if the taste is unpleasant or if the water is regarded as having therapeutic value. This type of spring is often described in terms of its principal characteristic constituent; e.g., salt spring.
Industry:Mining
