- 行业: 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 measuring device used to indicate the load or weight suspended on a drill hoisting line or cable.
Industry:Mining
A measuring weir having its sides flush with the sides of the channel, so that there are no end contractions.
Industry:Mining
A mechanical appliance for feeding coal, coke, or other fuel into a boiler or furnace. In hand stoking, the person who shovels the fuel into the furnace is known as the stoker.
Industry:Mining
A mechanical classifier consisting of an inclined settling tank and a rake-type conveying agitating mechanism. Feed introduced at the low end of the tank flows over a distributing apron toward the high end of the tank. The heavier materials of sand size settle into the rake zone and are raked up the slope and out the tank; slime and finer sands are carried over the rear wall in suspension.
Industry:Mining
A mechanical device consisting of a short piece of casing cemented in the collar of a borehole at the upper end of which is affixed a gate or large plug valve followed by a rod stuffing box. Utilizing this assembly, underground drilling can be accomplished safely in areas of high hydrostatic pressure.
Industry:Mining
A mechanical device designed to facilitate the hoisting or suspension of casing in a borehole. Made by forming a half circle in a heavy steel bar. When bolted together, in pairs, the bars fit around the outside and tightly grip the casing. The size of the clamp is determined by the outside diameter of the casing to be handled.
Industry:Mining
A mechanical device for crimping the metallic shell of a fuse detonator or igniter cord connector securely to a section of inserted safety fuse.
Industry:Mining
A mechanical device for cutting safety fuse clean and at right angles to its long axis.
Industry:Mining
A mechanical device for holding stone during grinding and polishing facets at the exact angles that theoretically produce the most brilliant stone. Rarely used in fashioning diamonds or other valuable stone where preservation of weight is more important than maximum brilliancy.
Industry:Mining
