- 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 ...
Term used to describe the surface finish of building limestone that is deeply scored by using steel-shot abrasive with gangsaws.
Industry:Mining
Term used to distinguish rapid burning from slow fuse. Ignition rate is several thousand feet per minute, but slower than that of detonating fuse.
Industry:Mining
Terms applied to the method of blasting in which large charges are fired in small adits driven into the face of the quarry at the level of the floor.
Industry:Mining
Test employing a rotating abrasive wheel or plate against which specimens are held. The specimens are abraded for a given number of revolutions, and the weight of material lost is a measure of the abrasive hardness.
Industry:Mining
Test for determining relative friability of a particular size of sized coal.
Industry:Mining
Testing conditions designed to resemble those existing underground as closely as possible, and to reproduce what was considered to be the most dangerous condition, namely, a blownout shot discharging into the most easily ignited mixture of combustible gases and air.
Industry:Mining
Testing in which boreholes are drilled for the purpose of obtaining samples by means of which the characteristics of overburden and/or the rock on which the foundation of a structure will rest can be determined.
Industry:Mining
Testing methods, the use of which destroy or impair the part or product insofar as its intended use is concerned, but which give proof or an indication of the strength or quality of similar or duplicate parts or products. Such tests involve the subjection of the test piece to various influences, of destructive magnitude, such as impact, stress, pressure, cyclic movement, etc.
Industry:Mining
Tests carried out on the ground, in a borehole, trial pit, or tunnel, as opposed to a laboratory test. An in situ soil test may be a vane test, dynamic penetration test, etc.
Industry:Mining
