- 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 ...
The opening or passageway connecting the inside of a bit or core barrel to the outside and through which the circulating medium is discharged.
Industry:Mining
The opening or surrounding blocks in a furnace wall to receive the channel leading to the feeder.
Industry:Mining
The opening through a dredging vessel in which the bucket ladders work.
Industry:Mining
The operation of determining the comparative altitude of different points on the Earth's surface, usually by sighting through a leveling instrument at one point to a level rod at another point. Also, the finding of a horizontal line or the establishing of grades (such as for a railway roadbed) by means of a level. Also spelled levelling.
Industry:Mining
The operation of directing the intake air to and along the working face of a mine. The term was used in the early part of the 18th century to describe the coursing of air naturally induced in a coal mine.
Industry:Mining
The operation of extracting coal pillars, on the retreating system, in a pillar method of working.
Industry:Mining
The operation of hoisting coal, ore, miners, or materials in a shaft. The conventional method is to employ two cages actuated by a drum type of winding engine. Steel ropes are attached at either end of the drum, one over and the other under it, so that as one cage ascends, the other descends. Thus the cages arrive at pit top and bottom simultaneously.
Industry:Mining
