- Industry: 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 ...
Inclined rectangular table covered with canvas. The pulp, to which clear water is added if necessary, is evenly distributed across the upper margin. As it flows down, the concentrates settle in the corrugations of the canvas. After the meshes are filled, the pulp 488 feed is stopped, the remaining quartz is washed off with clear water, and finally the concentrates are removed (by hose or brooms).
Industry:Mining
Inclined trough that receives ore pulp, and classifies it into settling solids and relatively fine pulp overflow. The settled material is continuously dragged up slope and out by a continuous belt, perhaps provided with transverse scrapers.
Industry:Mining
Includes a number of processes used for the removal of impurities from impure metals produced by the smelting process. Impurities are removed by introducing air into the molten metal or exposing the metal to air, and by the addition of various fluxes and the removal of impurities as gases, drosses, or liquid slags. Lead, tin, and some types of impure copper are also fire-refined.
Industry:Mining
Includes loosening up of shallow or small outcrops of rock and breaking boulders. It may constitute the entire job, be done in connection with dirt excavation, or follow heavy blasting that has failed to cut gradelines or slope lines, or has left chunks too large to load.
Industry:Mining
Includes natural gas and the prepared varieties, such as coal gas, oil gas, and iron blast furnace gas, as well as producer gas, etc.
Industry:Mining
Includes nonmetalliferous as well as metalliferous deposits.
Industry:Mining
