B. R. Hennigar

Joseph LaRocco

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

J. Arthur Widmer

Arthur Widmer worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Elery M. Groves

Elery M. Groves served in the 1027th Air Material Squadron. 

Emil A. Kuziel