- 行业: 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 ...
Be<sub>2</sub>C ; decomposes above 2,950 degrees C. Used as a moderator in nuclear application. Molecular weight, 30.04; yellow; hexagonal; and sp gr, 1.90 at 15 degrees C.
Industry:Mining
Be<sub>3</sub>N<sub>2</sub>; molecular weight, 55.05; colorless; isometric; and melting point, 2,200 + or - 100 degrees C.
Industry:Mining
Be<sub>4</sub>Si<sub>2</sub>O<sub>7</sub>(OH)<sub>2</sub>; mol wt, 238.23; orthorhombic; sp gr, 2.6.
Industry:Mining
Be<sub>4</sub>Si<sub>2</sub>O<sub>7</sub>(OH)<sub>2</sub>; mol wt, 238.23; orthorhombic; sp gr, 2.6.
Industry:Mining
BeAl<sub>2</sub>O<sub>4</sub>; mol wt, 126.97; orthorhombic; sp gr, 3.76; source of beryllium.
Industry:Mining
BeAl<sub>2</sub>O<sub>4</sub>; mol wt, 126.97; orthorhombic; sp gr, 3.76; source of beryllium.
Industry:Mining
Beams that catch the walking beam of the Cornish pump or engine on its down piston stroke if the string of tools being moved should break. The indoor stroke is the lifting stroke of such a pump.
Industry:Mining
Bearings such as are used on railway cars where the load is constantly in one direction and is sufficiently heavy to hold the journal against the bearing.
Industry:Mining
Bedding in clays resulting from alternating, desiccation, and saturation by groundwater.
Industry:Mining
