from t71+2,) pecause of the physical conditions described atove, these reductions in contamination prolably are neur tie upper limit to be expected 20". froa wind, Operational Peasiiility of Criterta It is not the insent here to discuss operational procedures, but it should be indicated that tie computing of radiation doses as recommanded in Policy Y is a not too difficult task. = ( If one assumes a t~°*1.2 rate of decay as a firs® approzization, then a single graph of dose rates versus times after detonation can be constructed that will represent a 30 roentpen —— effective tiolorical dose for ona year. An additional family of curves can be made that will provide the answers to the parancters of howmeh time would —— be availaile before evacuation an? of how lonc a tine pergomel would “ave to remain ovt of the radiation arsa in order to provide for a savincs of at east 15 roentrens, The highest whole-body gamma dose recorded for any locality where Personnel were present outside the Nevada Proving Grounds was at Riverside Snapper. ‘the maximum theoretical infintty gama dose was estimated to be 12-15 Froantgens, 7 mS oho Na Cabins, Nevada (about 15 people) following shot numer seven of Tusbler~ ORALG