National Museum of Nuclear Science & History
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.
Appears in the 1944 Hanford Telephone Directory as “Petersen” and the 1945 Directory as “Peterson”.
Manuel Romero was a staff worker at Los Alamos during the Manhattan Project.