National Museum of Nuclear Science & History
M. E. Ridge worked for the United States Engineer District Office.
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.
L. Krug worked in the Instrument Section at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
