- Industry: 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 ...
Contains two horizontal rolls, one above the other. In some two-high mills the direction of rolling can be reversed, and these are known as reversing mills; i.e., when a piece has passed through the rolls, the rolls are stopped and then rotated in the opposite direction, thus imposing another pass on the steel, the operation being repeated until the desired reduction is attained. Between passes, adjustment is made to the height of the top roll, and/or the piece is moved sideways by means of manipulators, to be in line with other grooves in the rolls.
Industry:Mining
Continental strata of Lower Jurassic or Upper Triassic age in the Eastern United States, consisting essentially of red sandstone, shale, arkose, and conglomerate, some 14,000 to 18,000 ft (4.3 to 5.5 km) thick. The series includes black shales with fish remains, thin coal seams in Virginia and North Carolina, and basaltic flows and sills.
Industry:Mining
Continental strata, including thin coal seams, similar to the Pennsylvanian, but of Permian age, occurring in North America. Strata of the same age are marine in Kansas, but include marginal red beds with gypsum, and thick salt deposits were formed later in the Kansas Basin.
Industry:Mining
Continued blowing of air through Bessemer converter after flame has dropped, for removal of phosphorus in steel production.
Industry:Mining
Contraction of mu-meson. An elementary particle with 207 times the mass of an electron. It may have a single positive or negative charge.
Industry:Mining
Control by servomechanisms. Use of signaling devices originating with the process to indicate, vary, or regulate performance.
Industry:Mining
Conversion of coal to gaseous fuel without leaving a combustible residue.
Industry:Mining
Conversion of iron to steel in basic-lined Bessemer converter. Phosphorus combines with dolomite in this lining to produce basic slag.
Industry:Mining
