- 産業: Mining
- Number of terms: 33118
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- 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 building at the mouth of a shaft, where ore or rock is received from a mine.
Industry:Mining
A building in which coal is raised and stored preparatory to loading on cars, ships, etc.
Industry:Mining
A building on the surface at a mine where the miners can wash before going to their homes. A changehouse. A dryhouse.
Industry:Mining
A built-up riveted or welded steel girder, having a deep vertical web plate, with a pair of angles riveted along each edge to act as compression and tension flanges. For heavier loads, flange plates are riveted or welded to the angles.
Industry:Mining
A bulky machine that cuts a deep web of coal up to 6 ft (1.8 m) and is used in cyclic mining in medium to thick seams. It runs on the floor of the seam and does not require a prop-free front. It carries two horizontal jibs, one cutting at floor level and the other at a height depending on seam conditions.
Industry:Mining
A bulldozer exerting pressure on the rear of a scraper loader while the loader is digging and loading unconsolidated ground being excavated and moved during opencast mining.
Industry:Mining
A bulldozer fitted with a curved bowl hinged to the top of the front of the blade.
Industry:Mining
A bulldozer whose blade can be pivoted on a horizontal center pin to cut low on either side.
Industry:Mining
A bullnose bit; also, any bit the cutting face of which is rounded, such as a single- or double-round nose bit.
Industry:Mining
