38 DASA 2019-2 ‘On March 1, £954. at three-forty acm., twenty-three Japanese fishermen on bo ed the tishing boat No. 5, Fukuryu Mara, were encaged in fishing in the Middle Pacific about minecty moles northeast of Hikini Atall when a reddish- white flash was seenoon the horizon in «a west- southwesterly direction, and seven ar enht muinutes later a loud cxplosion was heard. Afterwards it was learned that the flash and explo- sion had been caused by the hydrogen bomb test at Bikini Atoll, “Avout three hours after the explosion, falbonthe boat, fine dust began ta fhe falling of dust lasted for several hours and ceased tumards soon. Phe boat as well as the fishermen and the fishes caught by them were covered with a white sheet of fine dust, After a tvo weeks!’ voyage, on March 14 the No. 5 Fukuryu Mara, contéenunated by radioactive dust, to Yaivu Harbor, Japan, ¢ returned It waa at this point that the world really began to learn what had happened, although the U.S, had announced that there had been a test on the first of March, and that 236 residencs of the Marshall Islands had been exposed to radiation and evacuated to Kwajalein, tust to give you a visual picture... FREMONT-SMITH and so forth’ Had there been a sort of a warning to ships RADIOACTIVE FALLOUT ANDO RADIATION EXPOSURE DUNHAM: There had heen an exclusion zone within which ships were warned not ta come, and there has been argument back and forth as to whether the PururyuMaru was within that zone, As you recall, the U.S. ofticials insrsted that it must have been within it, [t's obvious that i: didn’t have to be, because in Rongelap, which 43 way out- side the exc!usion zone, the doses on the northern part of the atoll were even higher than anything on the ship, and they would have been fatal, Bikini is about erphty or ninety mites away from Rongelap; the Fukuryu Mara was up to .he north, the ather side of the lethal sone, At Kongers, there were filty aizv-weather personnel, and 20) ntles from Bikini is Utinik. The doses here were roughly |Or- plus.