S. D. Smith

Joseph C. McGuire

Joseph Mcguire was a chemist with the Special Engineering Detachment at the Y-12 Plant in Oak Ridge, Tennessee.

James P. Mahoney

Frank Karcher

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

H. W. Brackney

H. W. Brackney worked for the Tennessee Eastman Corporation at the Y-12 Plant.