B. H. Ronfeld

Opaline Calhoun

Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Norma Mathis

Norma Gwendelyn Wentworth Mathis, wife of Gilbert P. Mathis, was a US Army Signals Corps employee at Los Alamos.

Thomas H. Evans

Thomas Evans worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Robert Koepsell