National Museum of Nuclear Science & History
John Ryan was a staff worker at Los Alamos during the Manhattan Project.
Evans worked at the 300 Area at Hanford during the Manhattan Project.
Levey was a member of the Army Special Engineering Detachment who worked at the K-25 plant at Oak Ridge during the Manhattan Project.
In 1943, Jess Brinkerhoff was working at Du Pont's Remington Arms ammunition plant in Salt Lake City as a warehouse and shipping foreman.
