- 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 ...
The distance every cubic yard is entitled to be moved without an additional charge for haul.
Industry:Mining
The distance from the inner end of the hole to the adjacent free face measured at right angles to the direction of the hole; or that portion of the hole that is filled with powder; or that part of the seam to be broken lying between the powder and a free face.
Industry:Mining
The distance from the point of curvature to the point of intersection (vertex), or from the point of intersection to the point of tangency.
Industry:Mining
The distance from the surface to the explosive charge. In the case of small charges, the shot depth is measured to the center of the charge or to the bottom of the hole. In the case of large charges, the distances to the top and to the bottom of the column of explosives are frequently given, and may be reduced to effective shot depth to give the equivalent of a concentrated charge.
Industry:Mining
The distance from the top of the powder column to the collar of the blasthole, usually filled with stemming.
Industry:Mining
The distance from which an object at eye level remains visible to an observer.
Industry:Mining
The distance in degrees that a shovel must swing between digging and dumping points.
Industry:Mining
The distance measured along a straight line parallel to the rope in which the strand forms one complete spiral around the rope or the wires around the strand.
Industry:Mining
The distance measured along the center line or most direct practical route between the center of the mass of excavation and the center of mass of the fill as finally placed. It is the distance material is moved.
Industry:Mining
The distance of a point from a main survey line measured at an angle to the latter that is not a right angle.
Industry:Mining
