- 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 ...
Spontaneous electrical polarization with all dipoles in the same direction. The polarity can be reversed by an external electrical field.
Industry:Mining
Spontaneous magnetic orientation of atoms with equal magnetic moments aligned in opposite directions.
Industry:Mining
Sprays located on the rear corners of the shovel at the sides of the continuous miner and aimed towards the front of the gathering arms to suppress dust by wetting the coal.
Industry:Mining
Sprinkling gold or rich ore upon or digging it into the ground, or placing it in samples for assay. Drill holes for uranium may be salted before logging with radiation counters.
Industry:Mining
Square or triangular strips of pinewood fixed vertically down each corner of a rectangular shaft to secure and stiffen the timber sets.
Industry:Mining
Square type of machine in which air is blown down to join pulp entering the cell below a mechanically driven impeller.
Industry:Mining
Squared timber frame used in underground driving to give all around support to weak ground. A cap is supported by two posts on a sill-piece or sill.
Industry:Mining
SrSnO<sub>3</sub>; sometimes used as an additive to titanate bodies, one result being a decrease in the Curie temperature.
Industry:Mining
SrTiO<sub>3</sub>; isometric; and melting point, 1,670 degrees C. Used in ceramic dielectric bodies, either alone or in combination with barium titanate or other titanates.
Industry:Mining
SrZrO<sub>3</sub>; melting point, 2,700 degrees C; sp gr, 5.48. Sometimes used in small amounts (3% to 5%) in ceramic dielectric bodies, one effect being to lower the Curie temperature.
Industry:Mining
