National Museum of Nuclear Science & History
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.
D. I. Nicholson worked for the United States Engineer District Office.
Hamilton worked at the 300 Area at Hanford during the Manhattan Project.
L. M. Haisten worked for the Tennessee Eastman Corporation at the Y-12 Plant.