- 行业: Mining
- Number of terms: 33118
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- 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 ...
The actual potential at the surface of the Earth taken as a point of reference.
Industry:Mining
The actual process of digging clay, by hand or by excavator; getting and transporting form the successive stages of winning.
Industry:Mining
The adaptation of computer aided tomography (CAT) scan technology to tomographic analysis of geologic features such as fractures and differing rock types. In geotomography, the software analyzes the energy ray paths between a transmitter and receiver that are placed in separate drill holes, at various locations along a single drill hole, or along an underground opening. Various types of energy waves, such as seismic, acoustic, electromagnetic, or X-rays, can be analyzed by the computer software to create an image.
Industry:Mining
The addition of a material to molten metal to form nuclei for crystallization.
Industry:Mining
The addition of cement to a soil, as a binding agent, and converting it into a weak form of concrete.
Industry:Mining
The addition of cement to a soil, which acts as a binding agent and produces a weak form of concrete called soil cement. The quantity of cement to be added depends upon the type of soil. Cement can be used with most types of soil, providing the clay fraction is reasonably small and other specified impurities are not present. A small percentage of lime is usually added. With very poor soils, cement stabilization may be uneconomical or impracticable.
Industry:Mining
The addition of energy to a system, thereby transferring it from its ground state to an excited state. Excitation of a nucleus, an atom, or a molecule can result from absorption of photons or from inelastic collisions with other particles or systems.
Industry:Mining
The addition of inert dust to coal dust decreases its explosibility, and when enough has been added an explosion cannot occur. The point at which explosion cannot occur is said to be the explosibility limit of the coal in question.
Industry:Mining
The addition of small quantities of cement (1% to 2%) to fine-grained soils to reduce the liquid limit, plasticity index, and water-absorption tendency. The effect of the cement is to bring individual soil particles into aggregations, thus artificially adjusting the grading of the soil.
Industry:Mining
