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Indonesian Coal Mining Ppt Presentation

Lead.Lead l d is a chemical element with the symbol pb from the latin plumbum and atomic number 82 it is a heavy metal that is denser than most common materials lead is soft and malleable and also has a relatively low melting point when freshly cut lead is silvery with a hint of blue it tarnishes to a dull gray color when exposed to air lead has the highest atomic number of any.

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