National Museum of Nuclear Science & History
W. M. Miller worked for the United States Engineer District Office.
Robert W. Henderson was an American engineer. He attended the University of California School of Engineering.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Richard “Dick” H. Nelson served as a private first class in the 509th Composite Group. He was the radio operator on the Enola Gay during its mission to Hiroshima.