- 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 ...
Working coal in much the same manner as with the pillar-and-stall system.
Industry:Mining
Working of coal seam at right angles to the natural cleats, joints, or slips.
Industry:Mining
Working operations such as bending, drawing, forging, piercing, pressing, and heading performed above the recrystallization temperature of the metal.
Industry:Mining
Workings that are no longer in operation but that are not classified as abandoned.
Industry:Mining
Wrought-iron arms or spokes projecting beyond the surface or periphery of a flat-rope drum, between which the ropes coil or lap.
Industry:Mining
X-ray diffractions, in addition to fundamental diffractions, which appear as an alloy inverts from disorder to perfect order of its constituent atoms at lattice sites; called superlattice diffractions and attributed to a superstructure of ordered atoms. Superlattice diffractions also appear where long-range order obtains in the stacking of silicate structural units, such as in phyllosilicates. See: superstructure; long-range order.
Industry:Mining