- Industry: 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 ...
Black acidic organic matter extracted from soils, low-rank coals, and other decayed plant substances by alkalis. It is insoluble in acids and organic solvents.
Industry:Mining
Black monoclinic mineral, Fe<sub>2+</sub>Fe<sub>2 3+</sub>(SiO<sub>4</sub>)<sub>2</sub>.
Industry:Mining
Black powder pressed into cylindrical pellets 2 in (5.1 cm) in length and varying from 1- 1/4 to 2 in (3.2 to 5.1 cm) in diameter. Each pellet has a 3/8-in (9.5-mm) hole through its center to permit fuse insertion.
Industry:Mining
Black to brown, rounded mass, variable in size from a few millimeters to 30 or more centimeters. Usually consists of coprolites, corals, shells, and bones, more or less enveloped in crusts of collophane. Found in many horizons of marine origin. Also covering the ocean floors at many locations around the world.
Industry:Mining
Blackpowder, often called gunpowder. Also, some of the slow-acting dynamites.
Industry:Mining
Blast furnace slag that contains sufficient calcium orthosilicate to render it liable to fall to a powder when cold. Such a slag is precluded from use as a concrete aggregate by the limits of composition specified in British Standards 1047.
Industry:Mining
