Chester Twork

Opaline Calhoun

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

W.O. Simon

Herman R. Croft, Jr.

Herman Croft, Jr. worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Murry S. Levin

Levin Murry worked for the United States Engineer District Office.