- المجال: 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 ...
A simple powder loader with a high air velocity that is used in Canada in underground work for charging holes with a depth of up to 14 ft (4 m).
Industry:Mining
A simple square frame of about 2-in by 2-in (5.1-cm by 5.1-cm) pieces tied with diagonal strips and covered with brattice; used for deflecting air currents at inby points where the pressure is low.
Industry:Mining
A simple type of crusher for coal, with a drum to which are bolted toothed segments designed to grip the coal, forcing it down into the crushing opening.
Industry:Mining
A simple type of vertical centrifugal pump having one or more stages or bowls, which are supported from the motor head on the surface by means of screwed or flanged column pipe sections, each usually 10 ft (3 m) long. The line shafting from the motor to the impellers is sectional to correspond with the column section, and may operate in a sectional extra-heavy enclosing tube if oil is used as a lubricant, or may be exposed to the water when the pump is built to be water-lubricated.
Industry:Mining
A simple, split-tube, drive-type soil-sampling barrel. The sampler is equipped with a thin-walled unsplit brass liner, which can be capped and sealed to act as a watertight shipping container for the sample.
Industry:Mining
A single fiber, which cannot be separated into smaller components without losing its fibrous properties or appearance.
Industry:Mining
A single line reeved around two or more sheaves so as to increase pull at the expense of speed.
Industry:Mining
