National Museum of Nuclear Science & History
O. L. Koch worked for the Midwest Piping and Supply Company.
Fred Patrick worked in DuPont's Chamber Works in Deepwater, NJ in 1943 on Manhattan Project work.
Jay Wechsler enlisted in the Army in 1943 and spent several months at Oak Ridge working as an Army construction engineer, In the winter of 1943, he was suddenly transferred to Los Alamos, where he began working directly with Otto Frisch.