- 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 ...
Excavating alluvial or other mineral deposits by means of high-pressure water jets.
Industry:Mining
Pipes prepared for handling corrosive liquids in such processes as acid leaching. Also, pumps and impellers handling ore pulps.
Industry:Mining
Long distance pipeline used for hydraulic transport of coal, gilsonite, copper concentrates and similar materials.
Industry:Mining
Mineral that would be colorless if chemically pure, but which commonly exhibits a range of colors due to the presence of small quantities of one or more coloring elements. Chief among these elements are those having atomic numbers 22 to 29; namely, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, and copper. Corundum, beryl, spinel, and quartz are examples of allochromatic gemstones.
Industry:Mining
Casts of short grooves (up to 5 cm) widest and deepest in middle and fading out at both ends; presumably formed by objects grazing against bottom and rebounding.
Industry:Mining
Glassy material produced mainly by the melting of local sediment or rock where a meteorite has struck the earth.
Industry:Mining
Mine working that has been abandoned, allowed to collapse, and perhaps sealed off. Unless proper safeguards are taken, old workings can be a source of danger to workings in production particularly if they are waterlogged and their plan position is uncertain.
Industry:Mining
Boring a hole into old workings to release gradually any accumulation of water and gas. The borehole tapping may be followed by driving an advance heading into the area. As the heading is extended, boreholes are kept in advance of the face to prevent the sudden breakthrough of water.
Industry:Mining
Cast iron that gives a white fracture because the carbon is in combined form.
Industry:Mining
