- 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 tough, compact, white, greenish, or grayish mineral aggregate, resulting from the alteration of feldspars, and consisting of albite, prehnite, zoisite, epidote, and other calcium-aluminum silicates and calcite.
Industry:Mining
A tough, lustrous, nickel-white or silvery-gray, metallic element. Symbol, Co. Occurs in the minerals cobaltite, smaltite, and erythrite; often associated with nickel, silver, lead, copper, and iron ores, from which it is most frequently obtained as a byproduct. Its alloys have unusual magnetic strength and are used for high-speed, heavy-duty, hightemperature cutting tools, and for dies, in jet turbines and gas turbine generators. Its salts are used in porcelain, glass, pottery, tiles, and enamels to produce brilliant blue colors.
Industry:Mining
A tower built up within a reservoir to house the control valves of supply pipes drawing off water at different levels.
Industry:Mining
A tower crane that rotates through a full circle and is erected on a fixed base.
Industry:Mining
A towing device consisting of a fixed lower jaw, a hinged and lockable upper jaw, and a socket between them to hold a tow ring.
Industry:Mining
A trace on the ground motion record representing the component of motion in a horizontal plane and in the direction of the seismic wave travel direction.
Industry:Mining
A trace on the ground motion record representing the component of motion in a horizontal plane and in the direction of the seismic wave travel direction.
Industry:Mining
A trace on the ground motion record representing the component of motion in a horizontal plane at a right angle to the seismic wave travel direction.
Industry:Mining
