Pos “3 4 7 woe wt - Method Used in Estimating Poses to the Tunes from Inhalation of Fallout “aterial G * G& fs pote nO 3? cr Ou yo Sobe he 9 a 7 ch The following assumption: srs race an estin. aad att eats eons lunge. A. Twenty per cent of the inhaled activity is deposited. B. There will be no elimination of particles during their radioactive lifetimes. There is uncertainty as to the biological half-life of particlss in the lungs. In those commnii‘:s showing the highest concentrations cf fallout, ths peak airborne materiel (wuich account.4d fer the greatest porocr~ tage of total fallout) occurred cmly « few hours aficr adstenation, “1.2 to t If one sssuies a reciolojicazl dees; aceerding : c “os "Pos oe °? and a biologicsi isi feLite of6 say 30 days, 4.5 the omission of Jielo sical LikTelife wold wot sifaect section Jy in? 2 see fe ote . owt 7 wot ee ~ o 2 . . she computed tet. coo. C, All of the activity is unssefeted with mrtic ‘copirable range of sises. Fast deta from cascade japactors indicate that ebeut 90% of the activity is sacocisted with particles 5 micrcns or lass in the comaunitics surrounding the Nevade Test Site. De. The lungs are uniformly irradiated. . E. The weight of the lungs is 900 grams. F, An individual inhales 20 cubic meters per 24 hours. ~72- to Saabnhion we Neaectene’ a RESEee TO erm RP SE Sr Ree preter ns Seer hoe a