- Отрасли: Mining
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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 ...
A ferroan variety of magnesite used in the manufacture of magnesia bricks.
Industry:Mining
A ferrous-ammonium sulfate, FeSO<sub>4</sub>(NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>.6H<sub>2</sub>O ; a light green crystalline salt.
Industry:Mining
A fibrous amphibole pseudomorphous after pyroxene. A trade name for a fireproof material, chiefly of asbestos.
Industry:Mining