- 行业: Mining
- Number of terms: 33118
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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 so-called 18-8 grades contain from 16% to 26% chromium and 6% to 20% nickel, are not hardenable by heat treatment, and are nonmagnetic in the annealed condition.
Industry:Mining
The so-called transition group of the British Coal Measures, between the Middle and Upper Coal Measures in the Carboniferous System. They include the Newcastle-under- Lyme Group and the Etruria Marl, and the Blackband Group in north Staffordshire, England.
Industry:Mining
The socket connecting the wire line to a wire-line core barrel overshot assembly.
Industry:Mining
The soft twisted-cotton string used to wick drill-rod joints; the act of placing the cotton string on the rod joints.
Industry:Mining
The solid carbonaceous residue that results from incomplete combustion of organic material. It can be burned for heat, or, if pure, processed for production of activated carbon for use as a filtering medium.
Industry:Mining
The solid figure formed by surfaces bounding vectors drawn at all points of the cross section of a member and representing the unit normal stress at each such point. The stress solid gives a picture of the stress distribution on a section.
Industry:Mining
The solid portion of the Earth, including water masses; the lithosphere plus the hydrosphere. Above the geosphere lies the atmosphere, and at the interface between these two regions is found almost all of the biosphere, or zone of life.
Industry:Mining
The solidification of molten metal in a casting in such a manner that feed metal is always available for the portion just solidifying.
Industry:Mining
