- 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 ...
Sampling for the establishment of reserves and conducted primarily upon the exposures along the development drivages.
Industry:Mining
Sand consisting of a mixture of light- and dark-colored grains.
Industry:Mining
Sand containing alkaline salts that attract and retain moisture and cause efflorescence in brick masonry.
Industry:Mining
Sand derived from a rock, in which the grains separate along their natural boundaries. This includes unconsolidated sand or a soft sandstone where little pressure is required to separate the individual grains.
Industry:Mining
Sand generally composed of rounded particles, and may or may not contain clay or other impurities. It is obtained from the banks and beds of rivers.
Industry:Mining
Sand leaching or percolation may be practiced wherever the ore is coarse enough to permit free passage of the solvent through the voids. The ore is loaded into large vats or tanks that are then filled with leaching solution. After the solution has been in contact with the ore for a certain time, it is withdrawn, and fresh solution is added. Liquid may 2755 be added from the top (downward percolation) or from the bottom (upward percolation).
Industry:Mining
Sand that is usually quartzitic and pure enough to resist heat and slags; used for the final layer in Siemen's steel furnaces.
Industry:Mining
Sand-size grains of predominantly aragonite (CaCO<sub>3</sub>) found in shallow, tropical waters. Aragonite forms by chemical precipitation in sea water due to the presence of SO<sub>4</sub>ions.
Industry:Mining
