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United States Bureau of Mines
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 ...
Guides in a pile frame to take the drop hammer of a pile driver.
Industry:Mining
Gumbel's name for a rock from the Bavarian Alps, variously referred to by others as gabbro, diabase, mica syenite, and mica diorite.
Industry:Mining
Gunite that commonly includes coarse aggregate (up to 2 cm).
Industry:Mining
Gunpowder made in large cubical grains and burning more slowly than the small or irregular grains.
Industry:Mining
Gypsum beds of loose small crystals.
Industry:Mining
Gypsum partially dehydrated by means of heat, having the approximate chemical formula, CaSO<sub>4</sub>.«H<sub>2</sub>O .
Industry:Mining
Gyratory-type crusher used for secondary reduction and identified by the shape of its breaking head. The large included angle of the breaking-head surfaces greatly increases the ratio of discharge to feed area; a large ratio permits crushed materials to separate to prevent power-consuming clogging and packing. The crusher's higher gyrating speed and large discharge area make it eminently suitable for fine crushing at a high capacity.
Industry:Mining
Hafnium and zirconium produced by the van Arkel and de Boer process.
Industry:Mining
Hafnium produced by the van Arkel and de Boer process.
Industry:Mining
Half the width of a simple anomaly (esp. a gravity or magnetic anomaly) at the point of half its maximum value. For simple models the maximum depth at which the body causing the anomaly can lie can be calculated from the half width.
Industry:Mining