Onel A. Sprague

Okey B. Ellison

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

Ronal Vanderhoof

Ronal Vanderhoof served in the First Ordnance Squadron.

Stanley Holbrook

Frances R. Nolan

Frances Nolan was a staff worker at Los Alamos during the Manhattan Project.