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United States Bureau of Mines
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 ...
Lead of more than 99.9% purity, with traces of copper and silver, as originally obtained from the ore; used for manufacturing storage battery plates and chemical piping.
Industry:Mining
Lead of purity exceeding 99.94% , suitable for the production of white lead.
Industry:Mining
Lead ore that has been stamped or pounded down to a sand or powder to remove rock and earth from the ore.
Industry:Mining
Lead ore with high silver content. During smelting, the lead trickles through the mass and collects gold and/or silver, which are later recovered.
Industry:Mining
Lead refined by the Betts process; it has purity of about 99.995% to 99.998% lead.
Industry:Mining
Lead that contains silver.
Industry:Mining
Leaf-shaped masses of stromeyerite (or other minerals) in a matrix of chalcocite (or other mineral).
Industry:Mining
Leakage past the valves and the plunger in a reciprocating pump, which should not be greater than 2% or 3% for a pump in good condition.
Industry:Mining
Lean; said of ores.
Industry:Mining
Leic. A heavy pick.
Industry:Mining
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