- 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 earlier type of rapid plow traveling at 70 ft/min (21.3 m/min) across the face.
Industry:Mining
An early flotation process (1903) based on adhesion of sulfide minerals to oil. Mineral oil or fatty acid agglomerated heavy minerals into floccules, which were separated by classification from overflowing gangue.
Industry:Mining
An early form (1932) of stable gravimeter consisting of a weight suspended from a spiral spring, a hinged lever, and a compensating spring for restoring the system to a null position.
Industry:Mining
An early form of pneumatic flotation cell, still in limited use. Air is blown in at the bottom of the tank at low pressure, through a porous septum such as a blanket, and 479 mineralized froth overflows along the sides while the tailings progress to the discharge end.
Industry:Mining
An early name for albertite, a dark brown to black asphaltic pyrobitumen with conchoidal fracture occurring as veins 1 to 16 ft (0.3 to 4.9 m) wide in the Albert Shale of Albert County, NB, Canada. It is partly soluble in turpentine, but practically insoluble in alcohol.
Industry:Mining
An early name for albertite, a dark brown to black asphaltic pyrobitumen with conchoidal fracture occurring as veins 1 to 16 ft (0.3 to 4.9 m) wide in the Albert Shale of Albert County, NB, Canada. It is partly soluble in turpentine, but practically insoluble in alcohol.
Industry:Mining
An early name for annabergite, a monoclinic mineral, 2(Ni<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>.8H<sub>2</sub>O) ; vivianite group with cobalt replacing nickel toward erythrite; occurs as light-green soft coatings of fine striated crystals, or 134 earthy; an oxidation product of nickel and cobalt arsenides, the green crusts being a distinctive guide to nickel ores.
Industry:Mining
An early name for asbestos, silicate minerals that separate readily into thin, strong fibers that are flexible, heat resistant, and chemically inert.
Industry:Mining
