Ralph J. Coffey

Roy V. Henderson

Roy V. Henderson was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Frank Karcher

Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

George R. Fogarty

George R. Fogarty served in the 393rd Bombardment Squadron.

George K. Abel, Jr.