Jack F. Hansjergen

William T. Kelley

William T. Kelley was drafted in 1942 into the Army and was assigned to the Corps of Engineers’ Manhattan District as part of the counterintelligence element of the project.

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.

Philip E. Jockle, Jr.

Albert V. R. Wulff, Jr.

Albert Wulff, Jr. worked for the United States Engineer District Office.