- 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 ...
Elimination of phosphorus from steel, in basic steelmaking processes. Accomplished by forming a slag rich in lime.
Industry:Mining
Mining away from the main shaft while extracting ore or coal, such as in longwall advancing.
Industry:Mining
Generally applied to carbon dioxide. Strictly speaking, a mixture of nitrogen and carbon dioxide. The average blackdamp contains 10% to 15% carbon dioxide and 85% to 90% nitrogen. It is formed by mine fires and the explosion of combustible gases in mines, and hence forms a part of the afterdamp. An atmosphere depleted of oxygen rather than containing an excess of carbon dioxide. Being heavier than air, it is always found in a layer along the floor of a mine. It extinguishes light and suffocates its victims. Hence, it is sometimes known as chokedamp.
Industry:Mining
Crushed angular stone fragments ranging from 1/8 to 1 in (0.32 to 2.54 cm) in size.
Industry:Mining
Concrete mixed in the proportions of 1 part cement, 2 parts sand, and 4 parts coarse material.
Industry:Mining
Hardening caused by the precipitation of a constituent from a supersaturated solid solution.
Industry:Mining
Mineral in which the color is due to some essential constitutent of the stone, for example, malachite, peridot, and almandine. In contrast to allochromatic minerals, idiochromatic minerals have a limited range of color.
Industry:Mining
Natural gravel as found in deposits that have been subjected to the action of running water.
Industry:Mining
