John M. Purdum

Walton D. Bellah

Karl D. Larsen

Dr. Karl Larsen worked at Massachusetts Institute of Technology during the Manahattan Project. While there, he conducted heavy-water research by spectrum analysis, which was one of the prerequisites to the early atomic bombs.

J. P. Heater

Heater worked at the 100-D Area at Hanford during the Manhattan Project.

Rene Prestwood

Rene Prestwood was an American nuclear chemist. Prestwood was recruited for the Manhattan Project as a young chemist from the University of California-Berkeley.