- 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 ...
An underground station, located in the intake airway, that is used by rescue teams during underground fires and rescue operations. The base should be as close to the fire as safety will permit, adequately ventilated, and in constant touch with the surface by telephone.
Industry:Mining
An underground survey made to determine the position of a faceline or goafline or some other specific feature.
Industry:Mining
An underground survey required by law to be undertaken at least once every three months for the purpose of bringing the working plans and other plans up to date.
Industry:Mining
An underground surveying instrument for measuring and setting out angles and determining magnetic north.
Industry:Mining
An underground surveying instrument for measuring and setting out angles and determining magnetic north.
Industry:Mining
An underreamer having cutters that expand when they come in contact with, and are pressed against, surface. Compare: expansion bit; underreamer.
Industry:Mining
An underreamer with cutting lugs that can be expanded or retracted by a hydraulically actuated device.
Industry:Mining
An underwater digging device which, in closing, bites into the sediment and contains it inside the closed shell. The bucket and load are then hoisted to the surface where the shell is opened to dump the load. Includes clamshells, orangepeels, and other variations.
Industry:Mining
