- 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 ...
Standard time applied at sea in which the surface of the globe is divided into 24 zones of 15 degrees , or of 1 h, each. The "0 zone" extends 7.5 degrees east and west of the meridian of Greenwich (England), (the Prime Meridian); the zones are designated by the number of hours that must be applied to the local time to obtain Greenwich time. Abbrev., ZT.
Industry:Mining
Standard-design, double-tube, swivel-type core barrel made in sizes to be used with appropriate standard ranges of diamond-drill fittings. Its distinguishing features are that a 2-1/2 degrees taper core lifter is carried inside a short tubular sleeve (called a lifter case) coupled to the bottom end of the inner tube, and that the lifter case extends downward inside the bit shank to within a very short distance behind the face of the core bit.
Industry:Mining
Stationary circular buddle provided with rotating brushes that prevent formation of channels as pulp flows radially across.
Industry:Mining
Stationary equipment is installed in a given location and is not moved from that location in performing its function. This includes equipment such as substations, pumps, and storage-battery charging stations.
Industry:Mining
Stationary screen with close-spaced wedge wire bars across wet pulp feed, set around arc of circle.
Industry:Mining
Steam above a temperature of 100 degrees C; produced by heating water under a pressure greater than standard atmosphere.
Industry:Mining
Steam direct from the boiler and under full pressure. Distinguished from exhaust steam, which has been deprived of its available energy.
Industry:Mining
Steel alloyed with 12% or more of manganese, chromium, or nickel. Such an alloy cannot be removed from a passing stream of ore by an ordinary guard magnet. Magnetic permeability is below 1.05.
Industry:Mining
Steel arch installed in an underground mine. Arches are employed to support loads caused by changing ground movement or faulted and fractured rock. They are designed so that when the ground load exceeds the design load of the arch as installed, yielding takes place in the joint of the arch, permitting the overburden to settle into a natural arch of its own, thus tending to bring all forces into equilibrium.
Industry:Mining
Steel as cast; i.e., not shaped by mechanical working. Originally applied to steel made by the crucible process as distinguished from that made by cementation of wrought iron.
Industry:Mining
