- 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 ...
Operation in which air is blown through molten copper in a wire bar or anode furnace. Sulfur is removed as SO, and impurities are slagged off.
Industry:Mining
Operations concerned with stripping overburden, valuable gravels, or sands in exploitation of opencast mineral deposits.
Industry:Mining
Operative temperature is that temperature of an imaginary environment in which, with equal wall (enclosing areas) and ambient air temperatures and some standard rate of air motion, the human body would lose the same amount of heat by radiation and convection as it would in some actual environment at unequal wall and air temperatures and for some other rate of air motion.
Industry:Mining
Opposed-shelf type that has two or more vertical elevating conveying units opposed to each other. Each unit consists of one or more endless chains whose adjacent facing runs operate in parallel paths. Thus, each pair of opposing shelves or brackets receive objects (usually dish trays) and deliver them to any number of elevations.
Industry:Mining
Optical diffraction of monochromatic light, commonly blue, caused by exsolution lamellae in some labradorite samples; appears to come from within the sample. Compare: labrador moonstone
Industry:Mining
Optical properties apparently at variance with optical rules, such as: anisotropy in isotropic minerals, such as birefringent diamond; biaxiality in uniaxial minerals, such as quartz; and erratic variation in birefringence near optical absorption bands--e.g., some epidote minerals.
Industry:Mining
Optimum particle size resulting from a specific grinding operation, stated in terms of percentage of material passing (or alternatively being retained on) a given size screen. The mesh of grind is the liberation mesh decided on as correct for commercial treatment of the material. Abbrev., m.o.g.
Industry:Mining
