Wa_ «ERS 8 (continued) have @ compounded factor of low uptake both by plants at by the bedy. So that on can't dule out inhalation hasard, As long as I have the floor I'd also like to comment on Colc Holasan's suggestion that we might well be interested in| highly concentrated falleut of rain the use of surface be If one assunes that the material...that one is using a ev bomb, and the material falls out within a period of thres or four hours, one may be interested in the denial of the usp the land in the future. of But a rough computation indica that the primary hasard to a population living in that arp and more or less staying there is from external radiation rath than from sonething like this, The sane snount of mater : that would be required to give tolerance effect which computed up here would in the first day give something 2000 reentgens to an unprotected person oa the average... a” the material were uniformly distributed over an area ast you would bave the nusber of curles of strontium to give this | tolerance effect, whatever thet figure ie - it turns out abe about § curies per square mile I thinks yo Begiming with » period of three or four hours the 3 radiation is sufficiently high at that concentration that] ebout 2000 roentgens would be the external radiation of an unprotected individual in an open area and during the f week exposure would be sbout twice that, So that I hinig that in that particular case, we probably are not interested ih strontium or in inhalstion hasard, | Denarimant 7 Torsy LI