- 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 ...
Dumped fills made up of selected materials. These fills are used when it is desired to utilize a particular property of a soil or rock and this property can be secured solely by selective excavation.
Industry:Mining
Durain in which much vitrain is present. Judged obsolete by the Heerlen Congress of 1935. Compare: durovitrain
Industry:Mining
During an explosion of methane and oxygen, carbon dioxide and steam are formed. When the steam condenses to water a partial vacuum is created, which causes an inrush or what is known as an afterblast.
Industry:Mining
During closing of bed or particles in the suction half of jigging cycle, interstitial burrowing down of fastest moving small particles before the mass of particles becomes too compact for movement.
Industry:Mining
During low water in the Salmon River, CA, the algae and other plants growing in the stream are gathered, dried, and burned. The ashes are washed, and some gold is obtained. This process is called mossing.
Industry:Mining
During the 24 h of the day the difference between the maximum easterly and maximum westerly values of the magnetic declination at any point.
Industry:Mining
Dust arising from the crushing or other dry working of sand, sandstone, trap, granite, and other igneous rocks is included in this class. Siliceous dusts are not soluble in body fluids, and when introduced into the respiratory tract in the form of particles of certain sizes and in sufficiently high concentration, they produce nodular growths that often result in a form of pneumonoconiosis that has been known as silicosis or "stone cutters" consumption.
Industry:Mining
Dust found on the side walls of a mine. The dust from the roof is generally included with this sample.
Industry:Mining
Dust particles with sufficient cohesion that a light stroke with a brush or a light airblast, such as from the mouth, will not cause the dust to be dispersed.
Industry:Mining
