has support in that even the most superficial beta burns of the aatives exposed to fallout following the March 1, 1954 detonation showed a general area affected rather than snall individual spots. On the other hani, the oxttle and horses exposed near the Bevada Proving Grounds showed burns over areas only atout the sise of a quarter. Bren though these may not have been produced by single particles, they do represent less of an ares effect than suggested for the natives. Also, redioautographs of the fallout in areas cutaide the NPG suggest the eccurrence of individual particles with non-overlapping of radiation fields. Hovever, in neerby areas vhere the faliout ves relatively heavy, there vas a definite overlapping of the - fields, WITH OUR PRESENT KNOWLEDGE IT SHOULD BE STATED THAT DUE TO THE PARTICULATE MATURE OF FALLOUT IT WOULD MOT BE POSSIBLE TO ESTABLISH — REASONABLE AMD OPERATIONALLY WORKABLE CRITERIA THAT AT THE SAME TDE . } WOULD GUARANTER THAT THERE MEYER WOULD BE AN OCCURRENCE OF A BETA BURN. If one were to accept the asmmed beta to gamma dose rates of about 100=200 to 12 (measured under the eonditions given above), this might mean an infinity beta dose of 1000=2000 reps to the basal layer of the epidernis When the whole body infinity gama dose vas 10 roentgenaz, Of course, the - fallout material may be removed before the infinity dose is delivered; YX yet, on the other hand, 4t is not faprobable that {t could remain in the hair for essentially this length of time. In the case of a one-hour fallout, alzost one half of the dose would be delivered in the next 24 hours. yw 23