- 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 ...
Dies, jigs, and fixtures for metal forming, boring, assembly, and checking; made at a saving of time and labor, of laminated and cast components, and cemented into highly stable industrial tools, chiefly with epoxy and some with polyester resins. Epoxies are strong adhesive resins, particularly useful because of their low shrinkage factor. Polyesters have a cost advantage and are easy to handle.
Industry:Mining
Difference between weight of raw coal and that of salable products, expressed as a percentage.
Industry:Mining
Differs from other mills in that the material is not ground against a hard surface. Instead, a gaseous medium is introduced. The gas may convey the feed material at high velocity in opposing streams or it may move the material around the periphery of the grinding and classifying chamber. The high turbulence causes the particles and feed material to collide and grind upon themselves.
Industry:Mining
Digging in undisturbed soil, as distinguished from rehandling stockpiles.
Industry:Mining
Diphenylthiocarbazone. Used in geochemical prospecting to detect traces of certain metals.
Industry:Mining
Dipping outward in all directions from a central point, as a dome in stratified rocks. Compare: centroclinal; periclinal.
Industry:Mining
Direction as indicated by a compass without any allowances for compass error. The direction indicated by a magnetic compass may differ by a considerable amount from the true direction referred to a meridian of the Earth.
Industry:Mining
