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United States Bureau of Mines
Industry: 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 ...
Any light-colored crystalline carbonate mineral that is colored brown by the presence of iron; e.g., ankerite, dolomite, magnesite, or siderite.
Industry:Mining
Any line joining points of equal magnetic intensity. Applicable to the total intensity or the vertical, horizontal, north-south, or east-west components. So used in terrestrial magnetism literature, esp. in British and Canadian writings.
Industry:Mining
Any listing of substances as to their comparative hardness.
Industry:Mining
Any machine used for cutting metal, such as a boring machine, drill, grinder, planing machine, hobber, shaper, or lathe.
Industry:Mining
Any machine used to drill holes or cut tunnels in native rock; a gang drill, or tunneling machine, but most commonly a small form of locomotive, bearing a rock-drilling mechanism, and operating on a track laid temporarily along or opposite the ledge to be cut.
Industry:Mining
Any map showing relief by means of contours, hachures, shading, tinting, or any other convention.
Industry:Mining
Any material that has been prepared artificially and has the property of luminescence, regardless of whether it exhibits phosphorescence.
Industry:Mining
Any material that will neither ignite nor actively support combustion in air at 1,200 degrees F (649 degrees C) when exposed to fire.
Industry:Mining
Any material that, at the time of charging, is at a temperature of 70 degrees C or higher.
Industry:Mining
Any measurement instrument that is designed to measure the thickness of the coal remaining on the mine roof or floor after coal is removed by mining.
Industry:Mining
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