(1) Centarinated Tuna (2) Apprehension of long-range contamination of Japan and its fish- ing grounds, (3) , Radiological factors affecting the fishermen: (a) Estimating the whole body duse. (b) Estimated cctse from internal emitters. Contaminated Tuna Some of the Japanese Government officials are already referring to the latter half of March as the "great tuna panic", The origin of this panic both in the United States and Japan is worthy of careful study. the extent of the tuna consumption in the United States and Japan declined during the second helf of March is now known to me at this tine. For a day prior to my departure from New York on March 19, and for 2 weeks following ny arrival in Tokyo on Merch 22 the subject of radicactive tuna was a subject of popular conversation. “hen one considers the reaction of the informed tnerican public to the pessibilites of contamination of tuna it is not surprising that the Jerantse were stampeded into anpre~ nension over the immediate prospects of their eating radioactive tuna and the long-range prospects of their fishing grounds being revincd. (4) - Tuna Fishing Industry of Jepen L/ The Japanese fishing fleet at the pressent time censists of abcut 1,C00 vessels operating out of ten major ports. The annual velue of the tuna cetch snproxinates $26 million. The principal export species is albacor. Sixty percent of the lerded alvacor catch went to Jepanese eannsrs and forty percent was shinpe abcoad in freezers. Six y percent of the eltacor are caught in the surrmer scason “hich extends from May theough July. Curing this seeson, the fishing grounds are lIccated r2latively cluse to the Asiatic ccast. . During the winter months, January through arch, the Japanese sels range fer cut to sea. The winter season accounts for forty exnt of the annual catch, (8) Contaminated Tuna in Jep The Fuuyu Maru landed at Yaizu with a catch of 28,000 rounds of : 2st accept the fect that these tuna were excessively con= thet the decisicn of the Jaranese to dispose of these L. fn excellent report of technical inforxation abcut the Japane se Tuna fisheries in Japan is report No, 104 issued by the Natural R on sourc:s Section of SCAP in March, 1918, 3!