National Museum of Nuclear Science & History
Ray Martin worked for the A. S. Schulman Electric Company.
Ralph worked at the 300 Area at Hanford during the Manhattan Project.
Francis L. Friedman was a theoretical physicist and group leader at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
D. A. Plunkett worked for the Tennessee Eastman Corporation at the Y-12 Plant.