National Museum of Nuclear Science & History
Joe was a staff member at Los Alamos during the Manhattan Project.
Gross worked at the 100-D Area at Hanford during the Manhattan Project.
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.
George Mahfouz joined the Manhattan Project in 1943 when he was offered a job at the Houdaille-Hershey nickel plant in Decatur, Illinois.