- 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 mixture of ingredients for gunpowder before the intimate mixing in the incorporating mill.
Industry:Mining
A mixture of iron ore and fuel is reduced in an externally heated rotary retort. The gases are exhausted and constitute the fuel when the process has been started. The gases, after purification, are passed through combustion rings surrounding the retort and are burned according to the method of catalytic combustion. After reduction, the charge is cooled when it is poured through a layer of fluxing material; it is then transferred to a steelmaking furnace.
Industry:Mining
A mixture of lime with shells, gravel, or stones in equal proportions, with an equal proportion of water, forming a mass that when dry becomes as hard as rock; a substitute for bricks or stone in building.
Industry:Mining
A mixture of limonite with oxides of manganese and silicates of zinc and lime.
Industry:Mining
A mixture of oxygen, O<sub>2</sub>, and acetylene gas, C<sub>2</sub>H<sub>2</sub>, in such proportions as to produce the hottest flame known for practical use. Oxyacetylene welding and cutting is used in almost every metalworking industry.
Industry:Mining
A mixture of PETN and TNT used primarily for boosters and cast primers; military grade pentolite is usually 50% of each ingredient by weight; commercial pentolite often has a lower PETN content.
Industry:Mining
A mixture of portland cement, sand, and water applied by pneumatic pressure through a specially adapted hose and used as a fireproofing agent and as a sealing agent to prevent weathering of mine timbers and roadways. Etymol: Gunite, a trademark. To apply gunite; to cement by spraying gunite.
Industry:Mining
