A missing shipment of radioactive cobalt-60 was found Wednesday near where the stolen truck transporting the material was abandoned in central Mexico, the country's nuclear safety director said. (Dec.... more 
A missing shipment of radioactive cobalt-60 was found Wednesday near where the stolen truck transporting the material was abandoned in central Mexico, the country's nuclear safety director said. (Dec. 5) less 
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Thu, Dec 5, 2013 2:02 AM EST