¥. CALCULATIONS OF DOSE te TAKUYO MARU Persomnel Japenese data: 1. 2000 heurs JT \% daly Bainout started 2. 20% hours JS? 4 day Reinet over 3. 2200 hours J3T % daly Highest count of 37470 cpm be 0530 hours JST iS duly Start ef decontamination Se Seintillation beskgreend © 2400 cpa 6. Comtamination of seimtilistion esunterprove was 11,235 cpm Te Cenversions 500 cpm © 0.7 mr/wk Other datas h 1230 hears JS? 12 duly 2 rere 3e Dese = a Lae| Detonation tine Weres « tine of entry ty © tine of exit Ty © intensity ot H ¢ 1 bow Asgumptionss 2. The suspected event te have taken place at 1290 hours JST, 12 July. WT: The only instance where we are able te citenpt on estinste of the decay rete from the Japenese date is conpetible with the seecmed tine of detonation of the suspected event, a®1.2 de ‘Combimueus exposure of persennel] te indicsted dose rate for the tins peried wed, Wwe 2099 hours 14 July for tine ef highest events Bo 55 hows © ® Se Use 1150 heures 15 July fur end of docenteninations B70 hours © t2 Wee 0090 hears 27 July as time of uenitering MIM 12} dye © 8 - Tete == y* BEST AVAILABLE COPY