- Industry: 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 ...
Mine working that is being advanced into the solid, and from which no pillar is being removed.
Industry:Mining
Deformation characterized by loss of cohesion. Frequently flow grades into rupture, with a progressive loss of cohesion, until complete separation occurs.
Industry:Mining
May be described as the father of freefall drilling systems, all others having originated from it, although it is not now used in its original form.
Industry:Mining
One of the original freezing methods of shaft sinking through heavily watered sands. Although the principle is the same today, the process has been improved in many respects.
Industry:Mining
Calcium borate, CaB<sub>2</sub>O<sub>4</sub>, monoclinic. White radial aggregates in drill cores from limestone skarn, from the Ural Mountains. Named from the composition.
Industry:Mining
Early stage in development of modern flotation process for concentration of minerals, notably sulfides. The containing pulp was agitated with oil that then floated up, carrying selected minerals. This mineralized film was then overflowed or skimmed off.
Industry:Mining
Ger. A type of spotted slate characterized by minute flecks or spots of indeterminate material.
Industry:Mining
In coal formation, the impregnation of wood fragments with dissolved organic substances.
Industry:Mining
