- 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 ...
Trade name of an electronic optical device that measures ground distances precisely by electronic timing and phase comparison of modulated light waves that travel from a master unit to a reflector and return to a light-sensitive tube where an electric current is set up. It is normally used at night and is effective with first-order accuracy up to 1345 distances of 3 to 25 miles (5 to 40 km). Etymol: acronym for geodetic-distance meter. Compare: tellurometer
Industry:Mining
Trade name of strong wetting agent based on sulfonated bi-carboxy-acid esters.
Industry:Mining
Trade name; a refractory nozzle for steel pouring designed to give a constant teeming rate (therefore, the name). The nozzle consists of an outer fireclay shell and a refractory insert of different composition. Strictly speaking, the term refers to a particular type of insert developed for the teeming of free cutting steels.
Industry:Mining
Trade term for a conveyor belt lacing or fastening appliance, which can be applied to any thickness and width of belt. A lever mechanism is used to supply the pressure. The appliance is totally enclosed and grease-filled to protect against dust and damage.
Industry:Mining
Trademark for a semigelatin high explosive of relatively high weight strength of 65%; very good water resistance. Used in underground mining, in quarrying, in construction, and in general blasting.
Industry:Mining
Trademark for high-velocity permissible explosives furnished in seven grades based upon velocity and cartridge count; poor water resistance. Used for mining coal where lump coal is not a factor.
Industry:Mining
Trademark for iron oxide heavy media systems for the purification of coal, sand, gravel, and other similar materials.
Industry:Mining
Trademark for permissible dynamites (types C and CC) with very low velocity of detonation. Are used in coal mining where maximum production of large-size coal is desired.
Industry:Mining
Trammers, putters, or drawers employed to convey trucks or tubs from the working face. They may help load the trucks.
Industry:Mining
