National Museum of Nuclear Science & History
Hardleben worked at the 100-F Area at Hanford during the Manhattan Project.
Joseph Levinger was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ted Weyn worked for the A. S. Schulman Electric Company.
Philip G. Koontz was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
