National Museum of Nuclear Science & History
Hayes worked in the United States Engineer District Office.
Grimsrud worked at the 300 Area at Hanford during the Manhattan Project.
Rudolph W. Hogg served in the 1st Ordnance Squadron.
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.
