National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
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.
Bierowski worked for Stone and Webster Engineering Corporation.
Bruce Whittaker worked for the Tennessee Eastman Corporation at the Y-12 Plant.