- 업종: 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 class of devices intentionally placed in a borehole to change its course. All such devices are basically long, tapered, concave metal plugs that can be set at a predetermined point and bearing in a borehole to deflect or change its course.
Industry:Mining
A class of devices intentionally placed in a borehole to change its course. All such devices are basically long, tapered, concave metal plugs that can be set at a predetermined point and bearing in a borehole to deflect or change its course.
Industry:Mining
A class of devices intentionally placed in a borehole to change its course. All such devices are basically long, tapered, concave metal plugs that can be set at a predetermined point and bearing in a borehole to deflect or change its course.
Industry:Mining
A class of devices intentionally placed in a borehole to change its course. All such devices are basically long, tapered, concave metal plugs that can be set at a predetermined point and bearing in a borehole to deflect or change its course.
Industry:Mining
A class of respirators that supply a respirable atmosphere, independent of the workplace atmosphere.
Industry:Mining
A class of short-lived elementary nuclear particles with masses greater than that of the neutron.
Industry:Mining
A class representing all the recognized mineral deposits that are defined by physical and genetic factors that can be consistently differentiated from those of other classes or deposit types.
Industry:Mining
A classification based on the percentage of carbon, hydrogen, and oxygen in the ash-, moisture-, sulfur-, and nitrogen-free coal. These figures are plotted on trilinear coordinates giving well-defined zones of bituminous coals, lignites, peats, etc.
Industry:Mining
A classification in the United States of metals commonly occurring in alloys with iron, such as chromium, nickel, manganese, vanadium, molybdenum, cobalt, silicon, tantalum, and columbium (niobium).
Industry:Mining
A classification of chemical reactions based on the index of the power to which concentration terms are raised in the expression for the instantaneous velocity of the reaction; i.e., on the apparent number of molecules which interact.
Industry:Mining
