- 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 ...
To convert to a mineral substance; to impregnate with mineral material. The term is applied to the processes of ore formation and also to the process of fossilization.
Industry:Mining
To decompose a compound, either liquid, molten, or in solution, by an electric current.
Industry:Mining
To delineate the area in which a desirable mineral occurs by systematic core drilling or by underground openings.
Industry:Mining
To destroy the glasslike character of volcanic glasses by changing from the vitreous state to the crystalline state.
Industry:Mining
To determine the horizontal compass direction that a borehole is trending at a specific depth by means of one of several borehole surveying instruments.
Industry:Mining
To determine the presence of moving air, the direction of flow, and the approximate velocity of flow, the smoke tube method is commonly used, particularly in metal mines. The device consists of an aspirator bulb, which discharges air through a glass tube containing a smoke-generating reagent. Usually pumice stone saturated with anhydrous tin or titanium tetrachloride is employed. The dense white cloud of smoke released when the bulb is squeezed travels with the air current; the approximate air velocity in a mine airway is determined by timing how long the cloud takes to travel between two points.
Industry:Mining
To determine the stress in a member due to a system of applied forces, the system can be split up into several component forces and their moments and reactions added in order to calculate the total stress.
Industry:Mining
To deviate or change the course of a borehole by using a deflecting wedge.
Industry:Mining
