- Industry: Mining
- Number of terms: 33118
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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 ...
Formerly called outside diameter. It refers to the largest diameter of a thread on a screw or nut.
Industry:Mining
Formerly called selen-tellurium (Se,Te) , a variety of the trigonal mineral form of tellurium, Te .
Industry:Mining
Formerly, coal passing through bars 3-1/4 to 4-1/4 in (8.3 to 10.8 cm) apart and over 2- 1/4 in (6.7 cm) round holes. In Arkansas, the bars are 7 in (17.8 cm) apart and the holes are 3 to 3-1/4 in (7.6 to 8.3 cm) in diameter.
Industry:Mining
Forming austenite by heating a ferrous alloy into the transformation range (partial austenitizing) or above the transformation range (complete austenitizing).
Industry:Mining
Forms or patterns on which sprung arch bricks are laid to ensure the proper arch contour.
Industry:Mining