National Museum of Nuclear Science & History
A. T. Helgerson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
C. E. David worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Graydon Whitman arrived at Oak Ridge in March 1944, where he began work at the Y-12 separations facility.
