- 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 ...
An area of coal that is in place (in situ) and unimpaired by mining activities.
Industry:Mining
An area of goaf of sufficient extent to cause full subsidence at more than one point on the surface.
Industry:Mining
An area of goaf too small to cause full subsidence at the surface.
Industry:Mining
An area of sea surface, variable in size and markedly different in appearance, with color and/or oiliness; usually caused by plankton blooms.
Industry:Mining
An area of the ocean floor with a slope of less than 1 in 1,000 or flat, nearly level areas that occupy the deepest portions of many ocean basins.
Industry:Mining
An area or group of rocks surrounded by rocks of younger age; e.g., an eroded anticlinal crest. Compare: outlier
Industry:Mining
An area or region in which geology and climate combine to produce ground-water conditions consistent enough to permit useful generalizations.
Industry:Mining
An area or site of maximum deposition; the thickest part of any specified stratigraphic unit in a depositional basin.
Industry:Mining
An area or surface of uniform sediment, sedimentation, or sedimentary environment, including associated organisms. Compare: lithofacies
Industry:Mining
An area that is economically valuable for some variety of stone, such as granite or sandstone, that can be quarried. Compare: mineral land
Industry:Mining
