Cecil W. Craft

D. B. Cook

Cook worked at the 100-F Area at Hanford during the Manhattan Project. 

Richard Shepard

Richard Shepard joined the Manhattan Project at Oak Ridge, working in the K-25 Plant as a member of the Special Engineer Detachment.

Ed Hammel

Edward F. “Ed” Hammel was an American chemist. Hammel had just completed his Ph.D. at Princeton University when he joined a Canadian heavy water project sponsored by the school in 1941.

Helen S. Pack