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jan 1, 1941 - Glenn Seaborg discovers plutonium. The U.S. Committee on X‑ray Protection recommends adoption of maximum body burden of 0.1 microCurie for radium. L.S. Taylor recommends lowering the x‑ray exposure dose to 0.02 Roentgens/day.

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Radiation Timeline

ByJoshua Ha
8 Jun 2018
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jan 1, 1941
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~ 84 years ago

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