January 14, 2010 2:39 PM

Dept. of Energy seeks risky remains at one of Hanford nuclear reservation's most hazardous sites

The 618-10 Burial Ground at the Hanford Nuclear reservation received hazardous material, but many records of what's buried there were destroyed in the early 1990s. Now work is beginning to solve the mystery of what was placed here on the grounds of the reservation where plutonium for the first nuclear weapons was developed.

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