- 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 ...
An augite-bearing hypersthene basalt characterized by pillow structure and containing bytownite and magnetite. It differs from normal basalts in containing neither glass nor olivine and in having an equigranular texture (Johannsen, 1937). Its name, given by Coleman in 1914, is derived from the Sudbury District, ON, Canada. Not recommended usage.
Industry:Mining
An aurichalcite containing calcium monoxide, probably as a mechanical admixture.
Industry:Mining
An Australian term for a pebble or boulder; esp. one of the wind-polished or windsculptured stones that compose a desert pavement or the lag gravels of an arid region. It is pronounced with a hard g.
Industry:Mining
An authigenic deposit of iron-manganese oxides enriched with cobalt. These crusts may contain potentially commercial quantities of manganese (20% to 30%), copper, nickel, and cobalt (less than 3% combined), but are primarily evaluated on the basis of their cobalt content. They are found as encrustations on exposed rocky seabeds on island slopes, seamounts, or submerged plateaus in water depths between 800 m and 2,400 m. The crusts may be up to 40 cm thick, but are more commonly 3 to 5 cm. They often occur in association with platinum and phosphorite.
Industry:Mining
An authorized person is either one appointed or permitted by the official designated by State mining laws to be in charge of the operation of the mine or one appointed to perform certain duties incident to generation, transformation, and distribution or use of electricity in the mine. This person shall be familiar with construction and operation of the apparatus and with hazards involved.
Industry:Mining
An automated receiver and/or transmitter for transmitting signals when triggered by an interrogating signal.
Industry:Mining
An automatic apparatus for discharging lead from the kettle; used in the Parkes process.
Industry:Mining
An automatic appliance for feeding ore to stamps or crushers without the employment of hand labor.
Industry:Mining
An automatic arrangement by which coal or ore is fed forward on steel plates forming segments linked together in an endless chain.
Industry:Mining
An automatic device for regulating temperature (as by opening or closing the damper of a heating furnace or by regulating the supply of gas) and commonly utilizing either the differential expansion of solids or the vapor pressure of liquids.
Industry:Mining
