ho W_.ERY (continued) have a compounded factor of low uptake beth by plants and by the bedy, So that on can't Sule out inhalation hazard. As long as I have the floor I'd also like to coament on Colonel Holeman's suggestion that we aight well be interested in highly concentrated falleut of rain the use of surface borbs. Tf one assuses that the saterial...that one is using a surface boat, and the material falls cut within a period of three or four hours, one may be interested in the denial ef the ue of the land in the future, But a rongh computation indicates that the primary hasard to a population living in that area and more or less staying there is from external radiation rather than from something like this. The sane amount of material that would be required to give tolerance effect which was computed up here would in the first day give something like 2000 roentgens to an unprotected person on the average. If the saterial were uniformly distributed corer am area that you would have the mumber of curies of strontium to give this tolerance effect, whatever that figure is - it turns out to be about 5 curies per square mile I think. Begiming with a period of thres or four hours the external radiation is sufficiently high at that concentration that about 2000 roentgens would be the external radistion ef an unprotected individual in an open erea and during the first week exposure would be about trices that. So that I think that in thet particular cane, we probably are not interested in strontium or in inhalation hasard. Gnu 7 . — DUE ARCHIVES