National Museum of Nuclear Science & History
Ples M. Cheek served in the 1st Ordnance Squadron.
M. E. Ober worked for the J.A. Jones Construction Company.
Melvin L. Dietrich worked as a welder and electrician in a number of facilities across the Oak Ridge, Tennessee facility.
Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
