National Museum of Nuclear Science & History
Calkins worked at the 200 West Area at Hanford during the Manhattan Project.
Duane Sewell began working with the Manhattan Project in 1941. He was one of the first people to arrive at Oak Ridge and experienced first-hand some of the difficulties there with cyclotrons and isotope separation.
Ernest M. Bahor was a chemist. He graduated from the University of Detroit. He was a member of the Special Engineer Detachment and worked at the K-25 Plant in Oak Ridge during the Manhattan Project.