- 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 special diamond-set bit, similar to a set casing shoe, used to drill casing through overburden composed of sand, gravel, boulders, etc.
Industry:Mining
A special electrically driven car for underground transportation of officials, inspectors, repair, maintenance, and surveying crews and rescue workers.
Industry:Mining
A special electrodeposition cell giving a range of known current densities for test work.
Industry:Mining
A special form of cast-iron bricking curb whereby space is provided for building up the walling and also a channel or groove for collecting water running down the shaft sides. Rings are built into the shaft lining at intervals and pipes are arranged to conduct the water to the next lower ring or a sump.
Industry:Mining
A special key that fits the exploder used in electric firing of blasting charges; carried by authorized shot firer.
Industry:Mining
A special method of sealing off water, for example, reducing its inflow into shafts, by the injection of calcium silicate under pressure. It is sometimes used to reduce the leakage of water through defective lengths of tubbing in a shaft. The calcium silicate is highly impervious on solidification, behind the leaking tubbing.
Industry:Mining
A special rod designed for use in roof bolting. It consists of a mild steel rod, threaded at one end, the other end being split into halves for a length of about 5 in (12.7 cm). When the bolt is driven into the hole, a wedge opens the slotted end, thus forming the anchorage.
Industry:Mining
A special room or building used solely for the preparation of capped fuses.
Industry:Mining
A special round brush used to remove porcelain enamel bisque from in and around small openings in the ware.
Industry:Mining
