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http://news.yahoo.com/feces-contains-gold-worth-millions-224632128.html

Washington (AFP) - Human feces contains gold and other precious metals that could be worth hundreds of millions of dollars, experts say.

Now the trick is how to retrieve them -- a potential windfall that could also help save the planet.

"The gold we found was at the level of a minimal mineral deposit," said Kathleen Smith, of the US Geological Survey, after her team discovered metals such as platinum, silver and gold in treated waste.

A recent study by another group of experts in the field found that waste from one million Americans could contain as much as $13 million worth of metals.

Finding a way to extract the metals could help the environment by cutting down on the need for mining and reducing unwanted release of metals into the environment.
 
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