National Museum of Nuclear Science & History
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.
H. F. Gibbs worked for the A. S. Schulman Electric Company.
Born in 1903 in Baltimore, Mackie studied civil engineering at Union College in Schenectady, New York.
H.A. Deitrick worked at the 100-F Area at Hanford during the Manhattan Project.