- 업종: 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 kind of provitrain in which the cellular structure is derived from cortical material. Compare: suberain; xylain.
Industry:Mining
A kind of rubble work; in the United States, any rubble work of thin and small stones.
Industry:Mining
A kind of undershot waterwheel suitable for falls of less than 6 ft (1.8 m), having the buckets curved so that the water presses on them without impact.
Industry:Mining
A laboratory compacting procedure to determine the optimum water content at which a soil can be compacted so as to yield the maximum density (dry unit weight). The method involves placing (in a specified manner) a soil sample at a known water content in a mold of given dimensions, subjecting it to a compactive effort of controlled magnitude, and determining the resulting unit weight (ASCE, 1958, term 74). The procedure is repeated for various water contents sufficient to establish a relation between water content and unit weight. The maximum dry density for a given compactive effort will 680 usually produce a sample whose saturated strength is near maximum.
Industry:Mining
A laboratory compacting procedure to determine the optimum water content at which a soil can be compacted so as to yield the maximum density (dry unit weight). The method involves placing (in a specified manner) a soil sample at a known water content in a mold of given dimensions, subjecting it to a compactive effort of controlled magnitude, and determining the resulting unit weight (ASCE, 1958, term 74). The procedure is repeated for various water contents sufficient to establish a relation between water content and unit weight. The maximum dry density for a given compactive effort will 680 usually produce a sample whose saturated strength is near maximum.
Industry:Mining
A laboratory designed for the safe handling of radioactive materials. Usually contains one or more hot cells.
Industry:Mining
