William L. Holland

Ralph H. Lee

Lee worked in the 100 B Area at Hanford during the Manhattan Project.

Ray Clark

Leo P. Hassen

Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

William P. Jesse

William P. Jesse was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.