How lead is made material, used, processing, .Lead resists corrosion by water, so it has long been used in the plumbing industry. It is also added to paints, and it makes a longlasting roofing material. Lead is a health hazard to humans if it is inhaled or ingested, interfering with the production of red blood cells.
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How is Copper Mined Want to Know itHow is copper mined? Copper has been mined for many thousands of years, but the mining techniques have changed considerably over the years.
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