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• n  a light glass formed on the surface of some lavas; used as an abrasive
• v  rub with pumice, in order to clean or to smoothen

• In 1970 he applied a radioactive-dating technique to bits of volcanic pumice from the fossil-bearing sediments at Mojokerto.
• In the world in which albatrosses originated, the birds swallowed pieces of floating pumice for the fish eggs stuck to them.
• We get the most expensive denim jeans in the world, and then we take sandpaper, oil, hammers and pumice stones and destroy them by hand.

• pumice stone

News & Articles

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• GOJO PRO TDX Soap Dispensing System Cleans Hands and Reduces Risk of Infection and Skin Disease
  Workers in industrial, manufacturing and automotive shop environments can get their hands clean and reduce exposure to illness-causing germs with the PRO™ TDX™ soap Dispensing System and Cherry Gel Pumice ...
  July 9, 2013 - Marketwired via Yahoo! Finance

Quotes

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• Frank Borman in Boston Globe
  Borman described it as "vast, lonely, forbidding," a "great expanse of nothing that looks rather like clouds and clouds of pumice stone."
• Shelley Sekula-Gibbs in Click 2 Houston.com
  You have to really be careful of these. See all the holes in the surface of that pumice stone? That just absorbs bacteria, viruses, fungi,Sekula-Gibbs said.
• Anthony Bourdain in Green Bay Press Gazette
  I work for the beast,Bourdain said. "I'm drawing the same paycheck as those people : I'll be there with my pumice stone every time Paula Deen needs her bunions rubbed."