- 行业: 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 ...
A safety fuse in which the powder is enclosed in a thin tube of gutta percha, which in turn is enveloped in a waterproof textile covering. Abbreviated W.C.G.P.
Industry:Mining
A safety lamp invented by Sir Humphrey Davy in 1815 for the protection of coal miners. Its safety feature consisted of a fine-wire gauze enclosing the flame to keep it from coming in contact with mine gas.
Industry:Mining
A salt containing the divalent (Cr<sub>2</sub>O<sub>7</sub>)<sub>2-</sub>radical.
Industry:Mining
A salt in which all the hydrogen of the hydroxyl groups of an acid is replaced by a metal.
Industry:Mining
A salt lake whose waters contain in solution a high content of sodium sulfate and lesser amounts of the carbonates and chlorides ordinarily found in salt lakes; a lake whose water has a bitter taste. Examples include Carson Lake, NV, and the Great Bitter Lake in Egypt.
Industry:Mining
A salt of alumina and organic acid, 4Al<sub>2</sub>O<sub>3</sub>.C<sub>12</sub>H<sub>10</sub>O<sub>8</sub>.27H<sub>2</sub>O ; formed on the surface of granite under the influence of wet vegetation.
Industry:Mining
A salt of permanganic acid of the type, MnO<sub>4</sub>; dark purple; good oxidizing agent; often used as a disinfectant.
Industry:Mining
A salt or ester of boric acid; a compound containing the radical BO<sub>3+ 3</sub>. Compare: nitrate; carbonate.
Industry:Mining
A salt or ester of chromic acid; a compound containing the radical (CrO<sub>4</sub>)<sub>2-</sub>.
Industry:Mining
