- 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 ...
The weight per unit volume of water; normally equal to 62.4 lb/ft<sub>3</sub>or 1 g/cm<sub>3</sub>.
Industry:Mining
The weight percent of the elements (generally expressed as certain oxide molecules) in a rock.
Industry:Mining
The weighted average particle size of any sample, batch, or consignment of particulate material.
Industry:Mining
The wheel that is used in the Koepe winder instead of a winding drum. It usually consists of a cast-steel hub with steel arms and rim of welded construction. The diameter of the sheave varies from about 16 to 26 ft (4.9 to 7.9 m), depending on the size and type of winding rope and the total load. It is recommended that the ratio of the diameter of the sheave to the diameter of the rope should be 100:1 and that of the sheave to the largest wire in the rope, 2,000:1. A Koepe sheave is fitted with renewable friction linings.
Industry:Mining
The white porous residue containing chiefly tribasic calcium phosphate from bones calcined in air and used esp. in making cupels, pottery, and glass and in cleaning jewelry; also, synthetic tribasic calcium phosphate used similarly.
Industry:Mining
The whole community of rifting small plants and animals in layers of the water. This term is frequently used to describe all life forms, regardless of size, which have no means of significant self-locomotion. This community can be divided into the phytoplankton (plants) and the zooplankton (animals).
Industry:Mining
The whole group of prototype atoms that, where repeated by the symmetry operations of a space group, generate a crystal structure. Compare: unit cell
Industry:Mining
The whole or any part of the ore below the lowest level or beyond the range of vision. The prospective value of a mine beyond or below the last visible ore, based on the fullest possible data from the mine being examined, and from the characteristics of the mining district.
Industry:Mining
The widening of valleys through lateral corrasion by streams after they reach grade and begin to meander and form floodplains. Also, by the extension, the reduction of divides and the merging of valley plains to form a peneplain; peneplanation.
Industry:Mining
