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21/05/1946 Physicist Louis Slotin is fatally irradiated in a criticality incident

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The Slotin Accident

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SL-1 The Accident

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The Demon Core 1945

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The Troubling Story of the Nuclear Demon Core

Slotin accidentally began a fission reaction, which released a burst of hard radiation. Slotin was rushed to the hospital, and died nine days later, 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.