- 업종: 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 fastener for connecting a structure or machine to a permanent base.
Industry:Mining
A fatigue test in which one end of a specimen is held in a chuck and rotated in a ball bearing placed on the other end. The ball bearing carries a weight and, as the specimen rotates, the stress at each point on its surface passes through a cycle from a maximum in tension to a maximum in compression.
Industry:Mining
A fault along the perimeter of a geologically elevated or depressed region.
Industry:Mining
A fault along which all straight lines on opposite sides of the fault and outside the dislocated zone that were parallel before the displacement are parallel afterward.
Industry:Mining
A fault down which small quantities of water seep into mine workings. A dripping fault is a hazard, as mining operations may loosen or open it and cause an inrush of water.
Industry:Mining
A fault in which the hanging wall appears to have moved downward relative to the footwall. The angle of the fault is usually 45 degrees to 90 degrees . There is dip separation, but there may or may not be dip slip. Compare: reverse fault; thrust fault.
Industry:Mining
A fault in which the hanging wall appears to have moved downward relative to the footwall. The angle of the fault is usually 45 degrees to 90 degrees . There is dip separation, but there may or may not be dip slip. Compare: reverse fault; thrust fault.
Industry:Mining
A fault in which the net slip lies between the direction of dip and the direction of strike.
Industry:Mining
