Plumbing pipes were once made of lead. Suggest where the words "plumber" and "plumbing" came from.

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The element lead, which has an atomic number of 82 has the symbol Pb. This stands for the Latin word plumbum. That is probably why plumbers got their name, as they worked with lead pipes. Lead is a heavy metal, soft as well as malleable. Lead is now known to cause nervous and brain disorders. Therefore, it is no longer used in pipes. Until the 1970's, lead was used to join cast iron water pipes and lead was even used in ancient Rome. Due to its negative health effects, lead has been removed from paint, solder and gasoline.

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