National Museum of Nuclear Science & History
A. J. MacDonald worked for the Union Carbide & Carbon Corporation.
J. P. Marus worked for the J.A. Jones Construction Company.
Kenneth Walsh was an American chemist. Walsh studied as an undergrad at Yankton College in South Dakota.
O. L. Koch worked for the Midwest Piping and Supply Company.
Harris worked at the 300 Area at Hanford during the Manhattan Project.