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United States Bureau of Mines
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 ...
Eng. Generally signifies tender, soft, or easy to work; said of certain ores.
Industry:Mining
Eng. Good merchantable brand, as applied to metal on the Metal Exchange.
Industry:Mining
Eng. Greenish-gray shale; weathering yellow; Wenlock Limestone, Dudley.
Industry:Mining
Eng. In stones, joints filled with saponaceous or talclike mineral.
Industry:Mining
Eng. In tunnel construction, the successive sections in which a tunnel is executed. Shaft lengths are directly under the working shaft; side lengths are on each side of the shaft length; leading lengths are prolongations of the tunnel from the side lengths; and junction lengths complete the portion of the tunnel extending between two shafts, or between a shaft and an entrance.
Industry:Mining
Eng. Insufficient ventilation of a mine; dead air.
Industry:Mining
Eng. Interbedded layers of sandstone and shale, or for a rock (such as siltstone) intermediate between a sandstone and a mudstone.
Industry:Mining
Eng. Irregular gray limestone, Lower Lias, Lyme Regis.
Industry:Mining
Eng. Kentish term for ragstone. Also spelled urnell or ournal.
Industry:Mining
Eng. Line cut, with the point of a pick, on slickensides.
Industry:Mining