H. R. Balls

Martha G. Johnson

Martha G. Johnson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Fermin Vigil

Fermin Vigil was a staff worker at Los Alamos during the Manhattan Project.

Myron P. Daly

Richard Highsmith

Richard Highsmith worked for the Roane-Anderson Company.