National Museum of Nuclear Science & History
Perry worked in the 200 West Area at Hanford during the Manhattan Project.
Leroy Hartmann (1922 – 1944) was an electrical engineer in the Special Engineer Detachment Manhattan District CE in Oak Ridge.
In the 1944 Hanford Phone Book, he is listed under R. C. Theil. In the 1945 Hanford Phone Book, he is listed under R.
Cash worked as an operator at the Y-12 plant at Oak Ridge during the Manhattan Project.