-~- © - the fish aboard were radioactive, as well as fish caught by other vessels fishing in nearby areas, there was a serious disruption in the tuna fishing industry. of tuna for the fresh fish market stopped, sale for export. The sale as well as the As a consequence the Japanese arbitrarily established an acceptable level of radiation for fish and the sale of tuna resumed but at a depressed price for some time. A conference between American and Japanese scientists also helped to re-establish the tuna market. The acceptable level was arbitrarily set as a value less than 100 counts per minute as measured with an end window G-M counter placed 10 em from the surface of the fish. Fish of higher counts were discarded and usually buried. During the survey period 71,179 tons of fish from 2,152 boats were inspected at five designated ports. Of these boats 11 per cent had their catch discarded and a total of 358 tons or 0.5 per cent of the fish inspected were declared radioactive. The amount of radioactivity in . the discarded fish was as follows: 64 per cent between 100 and 500 cpm; 19 per cent between 500 and 1,000 cpm; 14 per cent between 1,000 and 3,000 cpm; 1.8 per cent between 3,000 and 5,000 cpm; and 0.8 per cent over 5,000 cpm (Kawabata 1956a). The use of a field survey-type meter to monitor