- 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 rod-to-feed-screw sub or rod-to-drive-rod sub by means of which the drill rods are coupled directly to the feed screw or drive rod of the diamond-drill swivel head, and the chuck is discarded or eliminated.
Industry:Mining
A roll orebody of the Wyoming type, which is bounded on the concave side by oxidized altered rock typically containing hematite or limonite, and on the convex side by relatively reduced altered rock typically containing pyrite and organic matter.
Industry:Mining
A roll train having adjustable horizontal and vertical rolls, so as to produce sections of various sizes.
Industry:Mining
A rolled steel section in the shape of the letter T, the flat top being the table.
Industry:Mining
A roller chain having double the pitch of a standard roller chain, but otherwise having standard pins, bushings, and rollers.
Industry:Mining
A roller chain in which the inner (block) links are connected solidly by nonrotating bushings.
Industry:Mining
A roller chain made up of two or more strands assembled as a single structure on pins extending through the entire assembly.
Industry:Mining
A roller conveyor consisting of two parallel series of rolls having one or both series skewed.
Industry:Mining
A roller conveyor having a series of rolls skewed to direct objects laterally while being conveyed.
Industry:Mining
