has support in that even the most superficial bets burns of the natives expoped to fallout following the March 1, 1954 detonation showed a general area affected rather than small individual spots. Om the other hand, the cattle and horses exposed near the Bevadsa Proving Grounds showed burns over areas only atout the sise of a quarter Bren though these may not have been produced by single perticles, they do represent less of an area effect than suggested for the natives. Also, radioautographs of the fallout in areas outaide the EFG suggest the occurrence of individual particles with non-overlapping of radiation fields. Sovever, in neerby areas where the fallout ves relatively heavy, there was a definite overlapping of the fields, WITH OUR PRESENT EMOWLEDGE IT SHOULD BE STATED THAT DUE TO THE PARTICULATE MATURK OF PALLOOT Y¥ WOULD mOT BE FOSSIBLE TO ESTABLISH REASONABLE AND OPERATIOMALLY WORKABLE CRITERIA THAT A? THE SAME TIME WOULD GUARARTES THAT THERE REVER WOULD BE AN OCCURRENCE OF A BETA BURN. If one were to accept the assumed beta to gamma dose rates of about 100=200 to 1 (measured under the an infinity beta dose eonditiors given above), this might mean of 1000=2%00 rera t& the basal layer of the spidernis pen nee When the whole body infinity gamsa dose was 10 roextgens. fallout material may be removed before thea infinity dose yet, on the other han’, Of course, the is delivered; it is not fmprobahle that {t could reaein in the hair for essentially this length of tine. In the case of a oneshow fallout, aluost one half of the dose vould be delirmre’ in the next 24 hours. 40% en