APPENDIX II OFF-SITE FILM BADGE SURVEY 1. A film badge survey was carried out on the four islands (Ujelang, Utirik, Rongelap, and Wotho) where Radsafe Stations were maintained by PHS personnel (110 JIF-7). This survey consisted of the setting up of about 15 film badge stations at various points on the islands. Station Number One was ‘located at the RadSafe station at the campsite. The other Stations were placed to give a complete coverage of the islands and, in particular, the native villages. The locations of the stations are recorded in the original data by description as well as island maps. The film badges were to have been placed three feet above the ground. However, this was not always followed, as in the case of Ujelang, where many film badges were placed six feet above the ground on coconut trees. 2. The film badges at each station were taken up every four weeks for processing and replaced by new badges. In addition to this, several badges were placed at Station Number One at start of operations that were to be collected at two-week intervals and at the end of the series to give a cumulative dose. 3. The doses listed in this summary will tend to be higher than the actual dosage received on the islands because of the exposure received from fallout on Elmer just prior to processing. This is particularly true of the ‘lay badges. For this reason one should consider the results from the cumulative badges as giving a better representation of the actual doses received. 4, The complete data are presented in tabular form accompanying this summary. A brief discussion of the results will be given here. For specific information one should consult the original data rather than this summary. t 5. The results show that each station reported essentially the same dosage as others on the same island. The * average total station doses rece anged from about 400 or on Utirik and Wotho to aboutC@900 Rongelap. The average total station dose on Ujelang was about 550 mr. The cumulative dose badges at Stations “umber One gave essentially the same results as the four-week badges if one considers the situation outlined in 3 above. The "ten week” and “end of series badges from Wotho appear to be watermarked, thus accounting for the abnormally high readings on these badges. Lu \ fax Ov