National Museum of Nuclear Science & History
Ray worked at the 100-F area at Hanford during the Manhattan Project.
H.A. Fettinger was a junior physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
M. A. Obermeyer worked for the J.A. Jones Construction Company.
Schroeder worked at the 100-D Area at Hanford during the Manhattan Project.