An estixate of beta doses at the surface of an inaginary sphere surrounding @ fallout particle is given in Appendix EF and an estinuate of beta doses fron a single particle required to produce recognisable erythema is presented in Appendix F, Caleulations indicate that the specific activity of some indivi- dual particles found in fallout wuld be great enough to produce recognisable erytheza if held in eontact with the skin for less than one day, yet the gazcs dose rate reaiing at & inches xay be quite suall. (See Appendix Q.) Additional information on dozes from individual particles has recently been reported*, The perticles found in and around Hanford consisted prinsi- pally of three radiofsotopes, Ru}, mu and its daughter Fh6, the duta end calculations in Appendix H aleo strongly indicate that a single fallout particles could produce a recognisable erythema. Contamination In the case of contanination of elothing, higher dose rates night be tolerated than those for exposed parts of the body. This was exenplified in the netives vhere no beta burns vere observed under elething of the most highly contexinated personnel. (This does not include such aress as under the waist line where material apparently collected and was held in place.) Qn the other hand, very large increases in contamination should not be tolerated since it is possible for the elothing to be rearranged so as to bring the contaninated surface in contact vith the skin, Further, it is not walikely that one may rub his hands over his elothing and then through the the mrbrianl hair vhere £¥ sould be held in place for relatively long periods of tize. *HW=33068. A status report. Sept. 15, 1954. ay Whe