John L. Sherwood

J. O’Conner

J. O'Conner worked for the Midwest Piping and Supply Company.

Bernard C. Sesko

Bernard Sesko served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.

Lucien Nerman

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

Francis J. Hatcher