Tracerlab, Inc. engineers and technicians, seen Dec. 31, 1957 in Boston, spend the day loading one of the largest cobalt bombs ever to be prepared in New England, which will be used in the continuing ... more 
Tracerlab, Inc. engineers and technicians, seen Dec. 31, 1957 in Boston, spend the day loading one of the largest cobalt bombs ever to be prepared in New England, which will be used in the continuing battle against cancer. From left to right: Fred Day, William Young and Robert McMahon, who holds a Geiger counter. (AP Photo/Frank C. Curtin) less 
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Associated Press | Photo By AP Photo/Frank C. Curtin
Wed, Dec 4, 2013 8:00 AM EST