- 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 ...
Eng. A massive cast-iron plate suspended from the roof of a return airway, through which all the return air of a separate district flows, allowing the air to always flow past or underneath it; but in the event of an explosion of gas, the force of the blast closes it against its frame or seating, and prevents a communication with other districts.
Industry:Mining
Eng. A mechanical apparatus for loading cages with full tubs and discharging the empties, or vice versa, at one operation.
Industry:Mining
Eng. A platform in a shaft a few feet beneath a working scaffold; to be used in case of accident.
Industry:Mining
Eng. A portion of ore set aside for the payment of rental or royalty on mineral lands.
Industry:Mining