(c) Dose necessary to produce a casualty from no shielding other than inherent situation shielding end ordinary combat shoes and clothing: 5N00 to 7000 repe (d) "Combat toleranco” does: 3000 to 5000 rep. When a combined beta and gamma hazard exists, beta should be disregarded at least for military hazard until at least 300 r gamma source is present, 5. Whole body gamma radiation (BAW Program Guidance, 29 Nove 1950). Development and issue of personnel dosage indicating devices readirg in steps of the order of 50 r or less, up to 600 re Whole Body gamma radiation (letter M.W. Boyer to Re LeBaron, 10 January 1951; Joint Panel concurred at Seventh Meeting 25=26 6. Jan. 1951) ae Effect of radiation on troops in the fields If substantial numbers of men receive acuto radiation dosea substantially above 100r, there is grave risk that fighting units will rapidly become ineffeotive. be Effect of a singlo explosure on an air crews Ce Effect of repeated exposures on an air or submarine crew, assumirg 25 r exposure per missions It is probable that at least eight such missions can be carried out at weekly or longer intervals before the chance of mission, failure becomes large due either to illness during the mission or significant general deterioration in health and ability. ( _ Radiation dosae substnatially above 75r are considered to very seriously reduce the odds for successful completion of mission. a BAW200/5 oe DOE ARCHIVES

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