- 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 ...
One-twelfth of a pound of 5,760 grains (troy pound), or 480 grains. A troy ounce equals 20 pennyweights, 1.09714 avoirdupois oz, or 31.1035 g. It is used in all assay returns for gold, silver, and platinum-group metals.
Industry:Mining