FILE - In this March 6, 2013 file photo, workers labor at the 'C' Tank Farm at the Hanford Nuclear Reservation, near Richland, Wash. The cleanup of the nation’s largest collection of radioactive waste left over from the production of nuclear weapons was supposed to be nearing an end by now, but 25 years after a landmark agreement was signed to deal with the waste, $30 billion has been spent, and officials are still decades and tens of billions of dollars away from finishing the cleanup of the radioactive mess. (AP Photo/Ted S. Warren, File)

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