- 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 ...
An opening or passage in a rock through which mineral-bearing solutions or gases may move.
Industry:Mining
An opening with a small inclination (about 2 to 4 mm for 1 m in length) in the direction toward the shaft for draining the water and to facilitate hauling of the full cars to the shaft.
Industry:Mining
An opening with a small inclination (about 2 to 4 mm for 1 m in length) in the direction toward the shaft for draining the water and to facilitate hauling of the full cars to the shaft.
Industry:Mining
An openpit quarry sunk below ground level. Access is gained by stairs, ladders, or mechanical hoists, and material is conveyed from the quarry by inclined tracks, trucks, derricks, or cableway hoists. These pits may reach depths of several hundred feet. A drainage scheme will in most cases be necessary, as the pit will form a natural sump for both surface and subsoil water. This type of quarry is often used for gravel or soft rock that can be extracted by some form of digging.
Industry:Mining
An operation in which the work, usually castings or forgings, is rotated in a barrel with metal slugs or abrasives to remove sand, scale, or fins. It may be done dry or with an aqueous solution. Sometimes called rumbling or rattling.
Industry:Mining
An operation that involves a purchase in one market with the simultaneous sale of an equivalent quantity in another market, (e.g., the London Metal Exchange and the New York Commodity Exchange), and the necessary foreign exchange transaction to protect against any change in the parities between the two currencies involved.
Industry:Mining
An operator on the stock exchange who buys and sells on his or her own account and who makes a profit from differences in prices rather than from commissions.
Industry:Mining
