Trinity Test Site, Louis Slotin at Test Tower, 1945

Slotin and Herbert Lehr with Gadget prior to insertion of the tamper plug (visible in front of Lehr's left knee). Louis Alexander Slotin (December 1, 1910 - May 30, 1946) was a Canadian physicist and chemist who worked on the Manhattan Project. During WWII, Slotin conducted research at Los Alamos National Laboratory. He performed experiments with uranium and plutonium cores to determine their critical mass values. On May 21, 1946, he was conducting a demonstration when he accidentally initiated a fission reaction, which released a burst of hard radiation. He received a lethal dose of radiation and died of acute radiation syndrome nine days later. Slotin was the second person to die from a criticality accident, following the death of Harry Daghlian, who had been exposed to radiation by the same core that killed Slotin. Slotin was publicly hailed as a hero by the United States government for reacting quickly and preventing his accident from killing any colleagues. He was later criticized for failing to follow protocol during the experiment

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A-bomb Alamogordo Atom Atomic Gadget Remote Trinity

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