John L. O’Gara

Stephen Lawroski

Stephen Lawroski was an American chemical engineer who worked on the Manhattan Project at the University of Chicago’s Metallurgical Laboratory from 1944-1946.

F. M. Logan

Margaret Strombeck

Margaret Strombeck was a swtichboard operator at the Metallurgical Laboratory in Chicago during the Manhattan Project.

C. N. Rucker, Jr.

C. N. Rucker, Jr. worked for the Union Carbide & Carbon Corporation.