National Museum of Nuclear Science & History
R. A. Coster worked for the Union Carbide & Carbon Corporation.
Fred Hughes was a Reactor Operator at the Hanford B Reactor from 1943 through the end of the war. He worked for the DuPont Company, who transferred him from Prior, Oklahoma to Hanford in 1943.
Graham worked for Stone and Webster Engineering Corporation.
Leo Wojtanowski worked in a shop at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.