Christopher Hutton
Christopher William Clayton Hutton (1893–1965) a soldier, airman, journalist and inventor, was recruited as an intelligence officer to work for MI9, a branch of the British Military Intelligence, during the Second World War. Known as 'Clutty' to his friends, he was engaged towards the end of 1939 by the War Office to work under Major (later Brigadier) Norman Crockatt, in order to set up and run operations to create and distribute escape and evasion aids for Allied servicemen. Hutton's small team identified suitable manufacturers, ensured supplies and devised methods by which the concealed aids could be sent to prisoner of war camps.
Louis Slotin
As part of the Manhattan Project, Slotin performed experiments with uranium and plutonium cores to determine their critical mass values. After World War II, Slotin continued his research at Los Alamos National Laboratory. On May 21, 1946, Slotin accidentally began a fission reaction, which released a burst of hard radiation. Slotin was rushed to the hospital, and died nine days later on May 30, the victim of the second criticality accident in history, following the death of Harry Daghlian, who had been exposed to radiation by the same core that killed Slotin.