National Museum of Nuclear Science & History
O. H. Moyer worked for the J.A. Jones Construction Company.
Gilbert Plass was a Canadian physicist. Plass was born in 1922 in Toronto. He received a B.S. in physics from Harvard University before being hired to work on the Manhattan Project at the Chicago Met Lab, where he worked as an associate physicist.
B. A. Howle served in the 509th Headquarters and Base Services Squadron.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Herbert Depke was born November 18, 1907 in Danville, Illinois. He received a B.S. from the University of Illinois in 1930, then began working for his family’s business.