William E. Deifenderfer (1938, Mechanical Engineering), Senior Vice President of United Technologies.[181] Stephen Lawroski (1939 M.S., 1943 Ph.D., Chemical Engineering), former chemical engineer on the Manhattan Project and participant of the Atoms for Peace program. Appointed to the general advisory committee of Atomic Energy Commission by President Lyndon B. Johnson in 1964, also serving on the Advisory Committee on Reactor Safeguards before retiring as Associate Director of Argonne National Laboratory.[182]