4.1.3—The Bendix Model 611 pocket dosimeter, 0 to 5 r range, was
chosen for use at the Pacific Proving Grounds ufter an extensive testing
program.
This dosimeter was found to be the most satisfactory of the sev-
eral tried as its response in the high temperatvre 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 tnaccuracies, 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 dosimetera 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 cent.
4.1.4—To simplify the issuance of mission badges, all personnel itn
TG 7.1 and TG 7.5, and others where necessary, were issued "charge-a-plates"
similar to those used {n commercial charge-account operations. Use of these
plates eliminated filling out forms by band, this speeding up the issuance of
badges tremendously.
4.1.5~ Following disclosure of the deficiencies in the permanent film
badge, a vigorcus experimental program was undertaken in an effort to develop a film packet and badge holder that wouid not be susceptible to watermarking and light leaks. Various methods of packaging the film packet, such
as using a polyvinyl plastic in place of the cellulose acetate, were tried. In
addition, the film packets were dipped {n ceresin wax prior to sealing in the
cellulose acetate hulder.
Also, the standard film badge, complete with ace-
tate holder, was coated with various materials. The results of the experimental program indicated that the film packets that were dipped in ceresia
was before sealing {n the cellulose acetate holder were most satisfactory.
The experimental program with these particular badges is continuing at the
Eniwetok Proving Ground.
4.2
Film Processing and Record Posting
All film processing and record posting was done manually, As a result, as many as 40 individuals were assigned to the Dosimetry and Records
Section.
The manual reading and posting operations were tedious and time-
consuming, and also subject to many errors. A continuing re-check was required to ensure the greatest accuracy possible, but this was not always suc~
ceasful. The master-record file for all personnei in Joint Task Force SEVEN
was maintained at Eniwetok Atoll. At Bikini Atcll a records file of only those
personnel present at the atoll was maintained.
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This split filing system