- 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 ...
An L-shaped conveyor in which the carrying surface and guard gradually exchange their functional duties.
Industry:Mining
An objection to the patent proceeding; when made, it calls for a hearing on the matter in the local land office.
Industry:Mining
An observation point used in geophysical surveys as a reference, to which measurements at additional points can be compared.
Industry:Mining
An obsolete form of syncline.--adj. Pertaining to a syncline. Compare: anticlinal
Industry:Mining
An obsolete term for allophane, a clay mineral composed of hydrated aluminosilicate gel of variable composition; P<sub>2</sub>O<sub>5</sub>may be present in appreciable quantity.
Industry:Mining
An obsolete term for diatomite, a light-colored soft friable siliceous sedimentary rock, consisting chiefly of opaline frustules of the diatom, a unicellular aquatic plant related to the algae.
Industry:Mining
An obsolete term for geochronology, the study of time in relationship to the history of the Earth, esp. by the absolute age determination and relative dating systems developed for this purpose.
Industry:Mining
An obsolete term for microcrystalline, a rock with the texture consisting of crystals that are small enough to be visible only under the microscope.
Industry:Mining
An obsolete term for monocline, a local steepening in an otherwise uniform gentle dip. CF: anticlinal bend; homocline; flexure. Compare: anticlinal bend
Industry:Mining
An obsolete term for seismic wave, the Earth motion produced by a natural (earthquake) or synthetic disturbance on the surface or underground; utilized in the seismic method of geophysical exploration and for investigating the Earth's interior.
Industry:Mining
