Designing nuclear warning signs to last millennia CBC.ca So you have 4 million highly-radioactive used nuclear fuel bundles. They are safely stored 500 metres underground. It's going to take about 1 million years before they are safe to juggle. How do you keep people from accidentally digging them up?http://www.cbc.ca/news/politics/story/2012/10/17/pol-nuclear-waste-signage-forever.html |
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