. , ima iee we . meneenrnrncneennaan: ot thoSeapets nemenpennmaeere 6 ney FORECAST FALL-OQUT PLOT thie of frlleout estimated to occur 2 hours and 10 minutcs after Hehoure ras trea shown in the dllustretion cround the maximun fall-out point is ie 250 square miles and the line inclosing this «roa indicatcs 6 mn integrated infinity dose. The next aroa is of approximatcly 759 square Sypind 3 rocntgsns, otcs This exemple represents the prediction that may tein nado for UrSHOT/KKOTHCLE, Second Shot on 24 March 1953, It is surprising “isscly tho actual fall-out approxinetad the above prediction. The maxinun cut et Lincoln Mine (48 miles from ground zero) oceurr.d «wt He hours end had . of from 4 to 5 roontgen infinity doses Ground roidings st Synnyside to . (North to Yorth-East of Lincoln Mince) further verified the forcenast plots “*\nutering stration epproximately 15 miles north of ground zero verificd the » in felleoute This method of snnlysis must be used with esution.s It shovld voor. ..vered that this proecdure aprifes only to 300 ft. tower shots ut HIG and men the cloud top recches 35,000 to 45,000 ft. msl (10 to 50 KT bombs). If the ‘r heights are lowered to 200 or 100 f,, of if the bombs aredotonated on the arflece the contamination will increase by sovernl ordcrs of magnitudee If the : ent tomb ylold is significantly less then 14 KT thon the cloud may only 2 75,000 to 20,000 fte msle Under such an cvontunlity the maximum fall-out cur such closer to ground zero (within a radius of 20 to 40 miles), rnd ‘ro of falleout will be more nesrly one hour after Hehours ae “YH. YA Ly. hin en- Ne. Me LULSUIGN Major, US..F Control Officer . weg “iy tone: ree eo weg oh Sigh Sesi AREGs an hi aaa