- 行业: 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 ...
A level or gently sloping tract or a slightly undulating land surface produced by extensive deposition of alluvium, usually adjacent to a river that periodically overflows its banks; it may be situated on a flood plain, a delta, or an alluvial fan. Compare: alluvial flat.
Industry:Mining
A level or gently sloping tract or a slightly undulating land surface produced by extensive deposition of alluvium, usually adjacent to a river that periodically overflows its banks; it may be situated on a flood plain, a delta, or an alluvial fan. Compare: alluvial flat.
Industry:Mining
A level or gently sloping tract or a slightly undulating land surface produced by extensive deposition of alluvium, usually adjacent to a river that periodically overflows its banks; it may be situated on a flood plain, a delta, or an alluvial fan. Compare: alluvial flat.
Industry:Mining
A leveling instrument consisting of a telescope (with cross hairs) and a spirit level mounted on a tripod, revolving on a vertical axis, and having leveling screws that are used to adjust the instrument to the horizontal.
Industry:Mining
A leveling procedure whereby observations are duplicated by resetting the instrument to detect errors of measurement immediately.
Industry:Mining
A leveling procedure whereby observations are duplicated by resetting the instrument to detect errors of measurement immediately.
Industry:Mining
A leveling rod in which the hundredths of feet, or eighths of inches, are marked by alternate bars of color the width of the measurement.
Industry:Mining
