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Associated Press
This undated photo provided by Bonhams shows a viewing window that shielded Manhattan Project scientists on the secret World War II bomb project from radiation. The 1,500 pound glass, measuring approximately 3 by 4 feet, contains 70 percent lead oxide and is among the items being offered for auction on Oct. 22, 2014 by Bonhams auction house in New York. (AP Photo/Bonhams)

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