4,1.8—The Bendix Model 611 pocket dosimeter, 0 to 5 r range, was chosen for use at the Pacific Proving Grounds after an extensive testing program. This dosimeter was found to be the most satisfactory of the sev- eral tried as its response in the high temperature and humidity was the most dependable. Two thousand were purchased. In general, the dosimeters were quite satisfactory in giving rapid information as to the dosage received by an individual. Many inaccuracies, however, were noted in the dosimeter readings, and therefore this information was primarily used only as a guide to how quickly the mission film badge should be processed. If indicated by the dosimeter reading, the mission badge would be processed immediately upon turn-in. All dosimeters were proof-tested at LASL to a pressure equivalent to 50,000 ft MSL, and each was tested for electrical leakage. In general, the proof-testing program was quite satisfactory. The average reject rate was approximately 15 per oent. —a 4.1.4—To simplify the issuance of mission badges, all personnel in TG 7.1 and TG 7.5, and others where necessary, were issued "charge-a-plates" ‘e was similar to those used in commercial charge-account operations. Use of these iL in Joint plates eliininated filling out forms by hand, thus speeding up the issuance of ‘ation Redbadges tremendously. man en4.1.5—Following disclosure of the deficiencies in the permanent film vas issued badge, a vigorous experimental program was undertaken in an effort to dea 'y'-«ion" velop a film packet and badge holder that would not be susceptible to waterami marking and light leaks. Various methods of packaging the film packet, such for enva as using a polyvinyl plastic in place of the cellulose acetate, were tried. In were also addition, the film packets were dipped in ceresin wax prior to sealing in the ation as Cellulose acetate holder. Also, the standard film badge, complete with acetate holder, was coated with various materials. The results of the experia dosagemental program indicated that the film packets that were dipped in ceresin first perwas before sealing in the cellulose acetate holder were most satisfactory. | each The experimental program with these particular badges is continuing at the worn in Eniwetok Proving Ground. severe , the ex4.2 Film Processing and Record Posting and the £0,000 All film processing and record posting was done manually. As a rewere mainsult, as many as 40 individuals were assigned to the Dosimetry and Records Section. The manual reading and posting operations were tedious and timerapid deconsuming, and also subject to many errors. A continuing re-check was reating in quired to ensure the greatest accuracy possible, but this was not always sucotering a cessful, The master-record file for all personnel in Joint Task Force SEVEN re noted was maintained at Eniwetok Atoll. At Bikini Atoll a records file of only those “(2 br. personnel present at the atoll was maintained. This split filing system —- 39 - 6007581087