- 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 ...
Coals containing less than 4% of moisture in the air-dried coal or more than 84% of carbon (dry ash-free coal). All other coals are considered as low-rank coals.
Industry:Mining
Coarse deposits of waterworn materials in which there is an absence of bedding.
Industry:Mining
Coarse-grained, porous, granular textured alumina that has not been calcined to the alpha alumina stage (artificial corundum). Resembles fine sand, hence free-flowing, with nondusting qualities. The relatively large surface area of sandy alumina permits its use as an absorbent in dry scrubber units at primary aluminum smelters.
Industry:Mining
Code of electric ringing, or for shallow depths, knocking, among the onsetter or hitcher at the shaft bottom, the banksman at the top, and the engineman who operates the winder. Signals inform the latter as to type of load, etc. A telephone is also installed.
Industry:Mining
Coke formed in gas retorts as distinguished from that made in a coke oven.
Industry:Mining
Coke manufactured in beehive, rectangular, or similar forms of ovens in a horizontal bed, where heat for the coking process is secured by combustion within the oven chamber.
Industry:Mining
Cokelike material found in cavities of igneous rocks intrusive into carbonaceous sediments.
Industry:Mining
