- 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 ...
An I-beam made from a single piece of steel passed through a hot rolling mill.
Industry:Mining
An ice obstruction formed by a circulation medium freezing inside the drill-rod couplings while the rods are racked up or standing in the drill derrick or tripod in extremely cold weather. Such plugs may loosen when rods are lowered into the borehole and may be ejected from the open end of the rod with enough force to injure drill crewmembers severely.
Industry:Mining
An ice-cored mass of angular rock waste, usually heading in a cirque or other steepwalled amphitheater and in many cases grading into a true glacier.
Industry:Mining
An Icelandic term for a peatlike variety of brown coal or lignite occurring in the Pliocene deposits and sometimes under the volcanic overflows of Iceland.
Industry:Mining
An idler consisting of one or more rolls supporting the belt in a flat position.
Industry:Mining
An idler pulley so mounted as to increase the arc of contact between a belt and a drive pulley. When used in a wrap drive, it has the added function of changing the direction of the return belt travel.
Industry:Mining
An idler pulley so mounted that its position is adjustable to accommodate changes in the length of the belt as may be necessary to maintain proper belt tension.
Industry:Mining
An idler pulley that is used solely for the purpose of changing the direction of travel of the belt other than at the terminals of the conveyor.
Industry:Mining
An idler roll with its supporting structure so designed that when it is mounted on the conveyor frame it guides the belt in a defined horizontal path, usually by contact with the edge of the belt.
Industry:Mining
An idler roller of about 3 in (7.6 cm) in diameter so placed as to make contact with the edge of the belt conveyor should the latter run too much to one side. Although vertical guide rollers are effective, they cause edge wear on the belting and their use is not favored.
Industry:Mining
