Lead refer to the following:

1. A bluish-white metal of bright luster, very soft, highly malleable, ductile, and a poor conductor of electricity; very resistant to corrosion; a cumulative poison. Symbol, Pb.

Rarely occurs in native form; chiefly obtained from galena (PbS). Lead is used in storage batteries, cable covering, plumbing, ammunition, antiknock gasoline, radiation shielding, and to absorb vibration. Other lead compounds are used in paints, fine glass, and lenses. Environmental concern with lead poisoning has resulted in a U.S. national program to reduce the concentration of lead in gasoline.;

2. An open watercourse, usually artificial, leading to or from a mill, mine, or reservoir.

-see also:
"Lead" is in the NAICS Code "212231"
  (Lead Ore and Zinc Ore MiningLead ore mining and/or beneficiating)


"Lead" is in the CPC Code "41542"
  Lead plates, sheets, strip and foil; lead powders and flakes

"Lead" is in the HS Code "2607.00"
  - Lead ores and concentrates.

"Lead" is in the UNSPSC Code "11101608"
  Lead ore

Ref: 86476/2006-09-14


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List of books: Lead

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