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United States Bureau of Mines
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 auxiliary fan that exhausts air from the face of a tunnel through ducting or piping and discharges it into the return side of the airway off which the tunnel branches.
Industry:Mining
An auxiliary pump placed on the bank of a stream or a lake and used to pump water to a distant drill.
Industry:Mining
An auxiliary pump placed on the bank of a stream or a lake and used to pump water to a distant drill.
Industry:Mining
An auxiliary shaft connecting a stope or other excavation with the level below.
Industry:Mining
An auxiliary shaft, a mill hole, carried from one level up toward another.
Industry:Mining
An aventurine feldspar from Delaware County, PA.; a pearly orthoclase.
Industry:Mining
An aventurine feldspar from Delaware County, PA.; a pearly orthoclase.
Industry:Mining
An average velocity of flow of a liquid just downstream of a measuring weir.
Industry:Mining
An axial flow fan with a turbine rotor-type impeller.
Industry:Mining
An axial rotation of 360 degrees , one-fold.
Industry:Mining
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