- 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 line of intersection of a contact surface with the surface of an exposure or with the surface of bedrock covered by mantle rock; it may be exposed or concealed.
Industry:Mining
The line of shafting that receives its power directly from the engine or motor and transmits power to other parts.
Industry:Mining
The line of sight of a surveying instrument that passes through the intersection of the cross hairs in the reticule.
Industry:Mining
The line of sight of the telescope of a surveying instrument, defined as the line through the rear nodal point of the objective lens of the telescope and the center of the reticle when they are in perfect alignment.
Industry:Mining
The line of zero fiber stress in any given section of a member subject to bending; it is the line formed by the intersection of the neutral surface and the section.
Industry:Mining
The line through those points on the Earth's surface at which the magnetic inclination is zero. The aclinic line is a particular case of an isoclinic line.
Industry:Mining
The lineal feet of drill rod of a specified size that a hoist on a diamond or rotary drill can lift or that the associated brake is capable of holding on a single line; also sometimes used to designate the size of a drill machine, based on the depth to which it is capable of drilling.
Industry:Mining
The linear distance, in the direction of feed, between the point of initial cutter contact and the point of full cutter contact.
Industry:Mining
The lines drawn on working plans to indicate the limit beyond which workings should not extend; e.g., because of the proximity of disused or abandoned workings.
Industry:Mining
The lines or ridges of cut gems that distinguish the several parts of the work, both of brilliants and roses.
Industry:Mining
