- 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 ...
Lifting by a crane fitted with a suction pad, employed for such items as precast concrete components, large panes of glass, and sheet steel.
Industry:Mining
Light carmine-red particles found in a limestone near Quincy, France; color apparently organic; a doubtful mineral.
Industry:Mining
Light iron rods, about 2 ft (0.6 m) long, hinged together to form one continuous length of 40 to 60 ft (12 to 18 m). They are pushed up inside a drainage borehole casing to clear stoppages of pebbles and gravel, thus allowing the drainage water to flow freely.
Industry:Mining
Light mine pump used in sinking, which can be raised or lowered in shaft as required.
Industry:Mining
Light passing through anisotropic crystals is doubly refracted with one or both ray directions not parallel to their wave normals. Such light rays do not follow Snell's law (n=(sin i)/(sin r)) of ordinary refraction and are termed "extraordinary." Also written Eray or e-ray. Compare: law of refraction
Industry:Mining
Light refraction in an isotropic crystal or amorphous substance according to Snell's law, as opposed to the birefringence of an anisotropic crystal.
Industry:Mining
Light steel poling boards driven down to protect trench sides from collapse.
Industry:Mining
Light that has passed through a colored-glass filter, absorbing some hues and permitting others to pass through.
Industry:Mining
