National Museum of Nuclear Science & History
Ed Helfenberger worked for the Roane-Anderson Company.
J. R. Evans worked for the William A. Pope Company.
Haigh worked at the 100-F Area at Hanford during the Manhattan Project.
Eugene S. Grennan served as a 2nd lieutenant in the 509th Composite Group. He was the flight engineer on the Straight Flush during the Hiroshima mission.
