- Отрасли: 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 ...
A coal-cutter jib that enables water to be taken, during cutting, to the back of the cut for dust suppression and prevention of gas ignition from frictional sparking. With an undercutting jib, it consists of a feed water pipe and four or five distributor pipes terminating in jets all arranged in the top plate of the jib.
Industry:Mining
A coal-cutter pick that allows a cut to be made in either direction without turning the pick. It is drop forged with a tip of fused tungsten carbide.
Industry:Mining
A coalfield that is totally buried beneath newer deposits, usually Permian and Trias strata, which repose unconformably on the coal measures in the basin. A good example of a concealed coalfield is that of Kent, in southeast England.
Industry:Mining
A coallike shale similar to torbanite. It is named from its type locality, Wollongong, New South Wales, Australia. Also spelled wollongite; wallongite.
Industry:Mining
A coal-tar pitch, for protecting the outside of steel tubes against corrosion and bacteria.
Industry:Mining
A coarse fireclay, often forming the floor of a coal seam, so called because it is used for making saggers or protective boxes in which delicate ceramic pieces are placed while being fired. Etymol: corruption of "safeguard." Also spelled: seggar.
Industry:Mining
A coarse fireclay, often forming the floor of a coal seam, so called because it is used for making saggers or protective boxes in which delicate ceramic pieces are placed while being fired. Etymol: corruption of "safeguard." Also spelled: seggar.
Industry:Mining
