National Museum of Nuclear Science & History
Cass worked for Stone and Webster Engineering Corporation.
Edward S. Fleischer was born on November 3, 1921, in Palo Alto, California. During the 1930s he attended the University of California, Berkeley.
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.