‘ ren ad +. indent fe tan (5) + ay ie: ilonizaetion chamber measurements to 16 rterreserntiitive iccactions on the Eneu, and New. Tae henc-helid survey aa main islands of Bikini, meters were used for the remainder of the survey measurements.” - The survey meters were first “field calibzzted" at the prime : : " ~ . measurement locaticns, l.e. . ‘ compared with the more accurate ionization chamber and eo rg 3 - Gy me _ awe ea . * e * . - ; ; meee . a} tne survey meter reédings were i: . . cian ~ ~ spectrometer measurements =o catain a@ calibration factcr for medeaeRE ns ~ ae ma Fo me ee Lam wean woe ae ee camel = 7 the particular canma-ray ssvectrun enccounteread in _tne Ilielid. mhkac = Reale instruments 3 a z x the survey snese hand-helc were <<: tren “eee usec tTtc extenca % -. Om = 37 tnroughout tre atoil. leveis izrcm isiane to islané end on inaivicual hy oss — mwa eXTEermar we ene a oe Ganka mae oa . Paaitatrticn > * a2eVvVEws considerably from island to island islanés could Dawes = Douna — LO arourc the atoll. — a Vaay It was possibie, however, to roughly ciassilty mosc islands into one i or three general areas, characterized by the relative f fields. one ‘ so then wee} s These areas are blast areas immediately surrounding the ground zeros of tests where the highest exposure rates 5005781 i, Lee ge ~ oe etl Ate wae * yenae - “f 7 — oN = - ee on +4. * exposure rates and also the composition of the radiation I — - : w= + wel 3 4. “ ™ ; Tn . — =A mee li tee Re + ~ . : In this way che virlacrlons in radiation - -- i.