National Museum of Nuclear Science & History
J. C. Watkins worked for the United States Engineer District Office.
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.
K. G. Frese worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Otto Frisch (1904-1979) was an Austrian-born physicist. Frisch joined the Manhattan Project in 1943, but his most important contribution to the project came in 1940 in England.