National Museum of Nuclear Science & History
Ed Helfenberger worked for the Roane-Anderson Company.
Thornton worked at the 300 Area at Hanford during the Manhattan Project.
G. Robert Gunther-Mohr joined the Manhattan Project in 1944. Mohr worked on the top secret polonium trigger being developed for the plutonium bomb at the Monsanto Chemical Company in Dayton, Ohio.
S. R. Lewandowski served in the 390th Air Service Group.
