- 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 ...
The act or process of introducing by substitution the nitryl radical, NO<sub>2</sub>, in place of one or more replaceable hydrogen atoms, such as in an organic compound. Nitrosubstitution compounds are used in the manufacture of some explosives.
Industry:Mining
The act or process of lowering the drill string, a string of pipe, or casing into a borehole.
Industry:Mining
The act or process of obtaining a core sample of rock material using a diamond-inset annular bit as the cutting tool. This tubular bit and attached core barrel are rotated at a speed under controlled pressure by means of hollow steel, flush-jointed rods through which water is pumped to cool the bit and remove rock cuttings. With the advance of the bit, a cylindrical core of rock passes up into the core barrel, where it is held by a core lifter or other device.
Industry:Mining
The act or process of obtaining cylindrical samples of rock in the form of a core.
Industry:Mining
The act or process of obtaining dry samples of soft rock material by forcing, without rotation, a tubular device into the material being sampled by pressure generated hydraulically, mechanically, or by the piledriver action of a drive hammer.
Industry:Mining
The act or process of splitting diamonds into smaller pieces, which may be more readily used as tool points, gems, or drill diamonds.
Industry:Mining
The act or process of thickening a length of tubing at its ends by increasing its outside diameter without changing the inside diameter; a length of tubing or drill rod so processed.
Industry:Mining
