- Industria: 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 rotary drill, with two hardened knurled cones that cut the rock as they roll.
Industry:Mining
A rotary drill, with two hardened knurled cones that cut the rock as they roll.
Industry:Mining
A rotary end-cutting tool constructed from a flat piece of material provided with suitable cutting lips at the cutting end.
Industry:Mining
A rotary kiln providing an alternative method to sintering for the treatment of fine ores and flue dust.
Industry:Mining
A rotary machine used for drilling the holes in combustible gases drainage. It is a twospeed, 150- to 250-rpm machine, drill-rod rotation being operated by a 6-hp (4.47-kW) motor. Traversing is done by a 2-hp (1.5-kW) motor, a pinion of which engages a toothed rack that runs the length of the drill frame. A forward drilling thrust of 4 st (3.6 t) is possible. The machine measures 10 ft (3 m) overall and weighs about 1,000 lb (454 kg). With an improved high-speed gearbox, 100 to 130 ft (30 to 40 m) of coal measures strata can be drilled in a shift.
Industry:Mining