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.
Grace R. Harvey was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Elliott Pettigrew Jr. served in the 603rd Air Engineering Squadron.
Arthur Shaw served in the Army at Los Alamos during the Manhattan Project.
