- 업종: 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 diagram, design, letter, color hue, abbrev., or other graphic device placed on maps, charts, and diagrams, that by convention, usage, or reference to a legend is understood to represent a specific characteristic, feature, or object, such as structural data, rock outcrops, or mine openings.
Industry:Mining
A dial or other appliance on a winding apparatus that indicates to the person in charge the position of the cage in the shaft. The indicator must be in addition to any mark on the rope or drum.
Industry:Mining
A diamond (as mined), the shape of which has not been modified artificially.
Industry:Mining
A diamond (as mined), the shape of which has not been modified artificially.
Industry:Mining
A diamond bit in the face of which has been gouged a circular groove deeper than, and at least as wide as, the diameter of one row of the inset diamonds.
Industry:Mining
A diamond bit produced by mechanical methods as opposed to handsetting methods.
Industry:Mining
A diamond bit so dulled by use that it is no longer of any value as a cutting tool.
Industry:Mining
A diamond bit the cross-sectional outline of which is partially rounded but not as fully rounded as a double-round nose bit.
Industry:Mining
A diamond bit the cross-sectional outline of which is partially rounded but not as fully rounded as a double-round nose bit.
Industry:Mining
