John K. McArthur

Jay Wechsler

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.

F. C. Fox

F. C. Fox worked for the Union Carbide & Carbon Corporation.

C. W. Barrett

C. W. Barrett worked for the Roane-Anderson Company.

Harry E. Drake