- 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 ...
In seismology, the surface of equal time elapse from the source point to the position of the resulting outgoing signal at any given time after the source charge has been activated. In a more restricted sense, the surface along which phase is constant at a given instant.
Industry:Mining
In separating blocks of stone in a quarry, the cut that is parallel to the strike of the rock strata.
Industry:Mining
In sieving or screening, that mesh at which division is made between oversize (arrested on screen) and undersize (passing through meshes).
Industry:Mining
In silver refining, the pot at the end of the series of pots used in the Pattinson process, in the direction in which the amount of silver left in the lead is diminishing. It contains the market lead.
Industry:Mining
In situ procedure, such as single-well (bail test or slug test) and multiple-well pumping tests, used to determine hydraulic properties of an aquifer.
Industry:Mining
In situ removal of all firm, unaltered, and unweathered surface geological materials.
Industry:Mining
In sizing analysis of fine material, preliminary screening by washing a weighed sample on a 200-mesh screen, perhaps with use of a dispersing agent, such as sodium silicate. Removal of the minus fraction (which is settled and later brought into account) is 3582 followed by drying of the on-size and by standard sizing analysis. Screen action is thus rendered more efficient.
Industry:Mining
In soil mechanics, the moisture content at which soil changes from plastic to liquid.
Industry:Mining
