upload
United States Bureau of Mines
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 ...
Pac. The undecomposed metallic ores, usually sulfides. Chiefly applied to auriferous pyrites. Concentrate and sulfide are preferable. An old syn. for sulfide. Obsolete.
Industry:Mining
Packs built between gates with wastes on each side and usually supported by packwalls.
Industry:Mining
Pairs of wheels used to support rods of a Cornish pump working on a slope.
Industry:Mining
Pale green; NaC<sub>2</sub>H<sub>5</sub>OCSS ; molecular weight, 144.19; and soluble in water and in ethyl alcohol. An ore-flotation agent.
Industry:Mining
Pale sky-blue aquamarine beryl.
Industry:Mining
Panning tin gravels in a half-calabash gourd. Used in prospecting and alluvial mining in primitive conditions.
Industry:Mining
Paper (as litmus paper) cut usually in strips and saturated with an indicator or other reagent that changes color in testing for various substances.
Industry:Mining
Paper impregnated with an extract of turmeric. Used as a test for alkaline substances, which turn it from yellow to reddish-brown, and for boric acid, which turns it red-brown.
Industry:Mining
Paper or cloth placed over explosives in a hole.
Industry:Mining
Paper spread with an explosive compound. It is rolled up for use in loading.
Industry:Mining
© 2024 CSOFT International, Ltd.