National Museum of Nuclear Science & History
Collins worked as a typist at the Y-12 plant at Oak Ridge during the Manhattan Project.
Heffner worked at the 200 East Area at Hanford during the Manhattan Project.
Willard H. Richardson served in the First Ordnance Squadron.
Crawford Greenewalt (1902-1993) was an American chemical engineer. He was one of the managers of the Manhattan Project for DuPont.
