National Museum of Nuclear Science & History
Harder worked at the 300 Area at Hanford during the Manhattan Project.
W. L. Thaggard worked for Clinton Laboratories at the X-10 Reactor.
J. L. Hartman worked for the J.A. Jones Construction Company.
Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
