Det danske Fredsakademi
Kronologi over fredssagen og international politik 14. december 2011 / Time Line December 14, 2011
Version 3.513. December 2011, 15. December 2011
12/14/2011
Hanford’s Critical Mass Laboratory Demolished 
RICHLAND, WASH., December 14, 2011 – One of the Most Hazardous Facilities at Hanford Comes Down Following Two Years of Safety Preparations. Built in 1960 during the height of the cold war, the 209-East Critical Mass Laboratory was one of three buildings of its type in the DOE Complex. The laboratory was run by Battelle for years to identify controls for criticalities, the term used for the dangerous condition when fissile material can sustain a reaction by itself. The facility housed experiments to test the criticality limits of uranium and plutonium solutions.
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