WED 3/4/1410 Derartment of Public Health, RABAUL. 7 July *4, 1958 Director, Department of Public Health, ORT. MORES Supiect: Adiitional Report on raiiation contaminateli Japanese vessel, My NBD 3/4/1376 of July 21, 1958, refers. On July 22, 1958, at * pem., ac‘ompariel vy Sub-Inspector Stesart of the Police 3. -artment, interviewed the officers of the "TAKUYO" rc csariing furtner details and clarification on some points. Sub-inspector stewart was, ofter the War, station?i in Japan for a tong period Japanese language. en: has some practical knowle ipe of the We found also from the "SATSUBO" one officer ith practiceable English and with the nelp of the tro officers, we couli gath-r information regar:in= the acciient. "TAKUYO"” was maiinr routine checks for raiiation iaily. The ship is equipped with a geiger counter ani ecintillovraph. On July 13, 1958, the sky was slichtly overeast eri a strong south-east wini was blowing. _ On July 1%, 1958, about 1,100 miles from Kabaul, at 11.30a.m they notice that the counting ner minute on the scintillorraph was 3,600 (the normal counting 1s 2,400), At 8 pers a squall hit the ship an] at 8.16p.m ‘the seintili ograph showel 35,000 counts per minute. At 830 the rain stoppcei. At 1Op.m the maximum count of ratio sctivity was reecr lei at 37,000 counts per minute. Tokyo was contacte! as soon as posible -ni the ship was savyisei to leave the area at the highest aneed possible, They were also aivisei on how to clean the ship with a neutral cleaner. Eadietion was mainly observed on the deck of the ship but was .also observed in a small quantity below the deck. Rooms below the deck were cleanei on July 15, 1958 Clothes of the crew, canvas, etc., were also washei and checked. At Rabaul, a haircut for each menber of the crew was ordered ani] carried out. Regariing the evaluation of the counting I have been advised by the specialised officers of the ship that the geiger counter normal walues are between 23 and 50 per minute. Seintililation count is 2,400 per minute normally. teck, ph unthe eta. apinttllograco eniv ; #000 ver min Aa far as I can ascertain, the ship was instructed from Tokyo that 50° scintillograph counts per minute are equal with radiation of 0.7 miliroentgen. 36,000 scintillations would mean 42 miliroentgens per veek, They were eavised that this war not a dangerous jose. BEST AVAIL £3:Ac COBY