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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 ...
Means of fastening an explosive charge in a seismic shot hole to allow several charges to be preloaded. At each stage the bottom charges are fired first, the upper charges being held down by anchors.
Industry:Mining
Means whereby walls are braced either vertically or horizontally by columns, pilasters, or crosswalls, or by floor or roof constructions, respectively.
Industry:Mining
Measurement in inches of taper or slope for a 1-ft (0.3-m) length of the threaded section of rod or pipe.
Industry:Mining
Measurement of atmospheric humidity.
Industry:Mining
Measurement of geologic time by geochronologic methods, esp. radiometric dating. Compare: geochronology
Industry:Mining
Measurement of height of mine haulage animals equivalent to 4 in (10.2 cm).
Industry:Mining
Measurement of soil or rock after it has been loosened by digging or blasting.
Industry:Mining
Measurement of soil or rock after it has been placed and compacted in a fill.
Industry:Mining
Measurement of the amount of suspended or slow-settling matter in a liquid; the measurement of the decrease in intensity of a light beam passed through a medium. Compare: nephelometry
Industry:Mining
Measurement of three-angled figures, or measurement by use of three-angled figures.
Industry:Mining
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