National Museum of Nuclear Science & History
Warren Sheehan joined Mound Laboratory in April 1956. He spent the first half of his career in health physics, or radiation safety, where he developed a new methodology for determining the amount of plutonium in urine.
George C. Hollowwa was a member of the Army Air Corps and a weapons expert. During and after World War II, he was involved in the assembly and testing of atomic weapons.
Harry Daghlian (1921-1945) was an American physicist. He died in 1945 from radiation poisoning after a criticality accident at Los Alamos.