Lead (Pb) is a blue or silver grey metal which has been mined for thousands of years because of its versatile properties- soft, malleable, relatively poor electrical conductor (used for cabling), highly resistant to corrosion and fire (used in roofing & fire protection gear), sound absorption, as well as radiation (used in x-ray shields).
Lead is found naturally in the environment, usually in coal and ore with other metals such as zinc, silver, gold and copper. Lead recycling from used lead-acid batteries (car batteries), lead pipes, roofing sheets and cable sheathing accounts for a significant lead pollution in . . .
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