- المجال: 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 ...
Alignment of optical extinction at some angle other than 0 degrees , 45 degrees , or 90 degrees to a crystal face or cleavage trace. Compare: extinction; extinction angle.
Industry:Mining
All areas of a coal mine from the loading point of the section to and including the working faces.
Industry:Mining
All expenses incurred on the surface of a mine that have to be charged against the mineral.
Industry:Mining
All faces, belonging to one or more forms, the normals to which lie in one plane (the zone plane) and whose edges of intersection are parallel to the zone axis.
Industry:Mining
All lands exclusive of timber lands and mineral lands that will not, without irrigation, produce some agricultural crop.
Industry:Mining
All moving parts connecting an engine with the point where work is accomplished.
Industry:Mining
All places in a mine through which there is a positive flow of air without the aid of a blower fan or of ventilation tubing.
Industry:Mining