- 行业: Mining
- Number of terms: 33118
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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 ...
Alloy of 59% copper, 1% tin, and up to 40% manganese. Practically a brass with high tensile strength and toughness. Used for ship's impellers and such fittings as must withstand corrosion by seawater.
Industry:Mining
Alloys that are suitable for die casting and that can be relied on for accuracy and resistance to corrosion when cast. Aluminum-, copper-, tin-, zinc-, and lead-base alloys are those generally used.
Industry:Mining
Alluvial deposit of gold or tin stone buried below a considerable thickness of soil or rock. Compare: lead
Industry:Mining
Alluvium produced by the erosion of a highland area and deposited by a network of rivers to form an extensive plain.
Industry:Mining
Alnico is an alloy of aluminum, nickel, and cobalt, with strong magnetic properties similar in all directions. Alcomax is anisotropic, with maximum flux along preferred axis. Hycomax is also anisotropic. Platinax, a cobalt-platinum alloy containing 23.3% cobalt, is isotropic.
Industry:Mining
Alpha-iron supersaturated with carbon as a result of quenching austinite (gamma-iron) below 150 degrees C. (Not martinsite.)
Industry:Mining
Also known as a disintegrator; used for secondary crushing of stone and gravel, and for reduction of slag, fertilizers, etc.
Industry:Mining