- 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 ...
A machine, making holes from 2 to 6 in (5.08 to 15.24 cm) in diameter, used for drilling overburden at opencut coal mines. Bits are of the auger or winged types.
Industry:Mining
A machine, pump, hopper, or other apparatus used to mix dry ingredients with water or other liquids to prepare a drill mud.
Industry:Mining
A machine, pump, hopper, or other apparatus used to mix dry ingredients with water or other liquids to prepare a drill mud.
Industry:Mining
A machine, pump, hopper, or other apparatus used to mix dry ingredients with water or other liquids to prepare a drill mud.
Industry:Mining
A machine, pump, hopper, or other apparatus used to mix dry ingredients with water or other liquids to prepare a drill mud.
Industry:Mining
A machine, pump, hopper, or other apparatus used to mix dry ingredients with water or other liquids to prepare a drill mud.
Industry:Mining
A machine-bolt anchor with a head at one end and threaded at the other, and fitted with a plate or punched washer so that when embedded in the masonry it will be securely anchored and will hold a wallplate in place.
Industry:Mining
A mafic nepheline syenite. Fifty percent of the rock is composed of aegirine-augite; the remainder is nepheline and orthoclase in about equal amounts. Accessories include apatite, biotite, titanite, and opaque oxides.
Industry:Mining
