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Digital Archive International History Declassified

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  • August 24, 1955

    Report by N.M Emanuel, 'Regarding the Nature of the Fallout Path of the Hydrogen Bomb Detonated on 1 March 1954 at Bikini [Atoll]'

    Report by N.M. Emanuel on the U.S. Castle Bravo test in the Marshall Islands. The report surmises from fallout data that the bomb used a fission-fusion-fission design, and that the bomb contained a larger than normal amount of fissile material which induced a thermonuclear reaction.

  • April 28, 1986

    Untitled report by Lt. Col. V.P. Alekseyev and Major V.D. Kohan on Radiation Levels

    Info on radiactive fallout, and that Kiev is currently safe and being observed by experts, while Pripyat has 30-160 micro roentgens/sec, and Rivne Oblast has 820 micro roentgens per hour. From emergency 91 hospitalized people sent to Moscow, and 54 to Kiev and Kiev Oblast.

  • May 23, 1986

    Preliminary Report on Radiation Levels in Lithuania Following the Chernobyl Accident

    Report from the Lithuanian Academy of Sciences on radiation levels detected in May 1986 following the Chernobyl nuclear accident. Both atmospheric tests and tests of food products like milk and honey showed elevated levels of radiation and radioactive isotopes which were “dangerous to the health of the population.”

  • September 16, 1986

    Second Report on Radiation Levels in Lithuania Following the Chernobyl Accident

    In a follow up to their earlier May report, the Lithuanian Academy of Science summarizes levels of radiation detected between April and August of 1986 following the Chernobyl nuclear accident. Atmospheric tests showed a sharp rise in radiation levels in late April, up to 50 times higher than Soviet standards for safe levels of exposure. Levels dropped off in May, with occasional spikes. The report also summarizes tests of food products grown in Lithuania or imported from other Soviet Republics.