National Museum of Nuclear Science & History
Beltzner worked at the 100-D Area at Hanford during the Manhattan Project.
Julius M. Simmons was an American chemist. He worked as a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
E. C. Manners worked for Clinton Laboratories at the X-10 Reactor.
Helen Nemeth was a staff worker at Los Alamos during the Manhattan Project.
Thelma worked at Los Alamos during the Manhattan Project.