Tuna Fishing yoes westward at avout 15 to 13 nautical mites oer dase On aporoachiny, tne Philippines this current sweeps nortnward and moct of Lt onlern tie renin to the east of Pormosa, lowever, these currents are not well defined during thie season of the year and on approaching Jaoan are confused and varlaole. Ooutn of Uhe Marshalis, tuere is a counter crrrent setting to tne eust ee snifts with the Se—— wit may reach a velootbiy of LS miles per daye This current never seems to cot as far north as ft). Nor tern islands of th: Varshalise Access to the southern tuna fishing areas in the resion of the Colomons, Canosa and Gilbert islantis would not scem to be appreciably interfercd with oy the present danger area save in the case of the silvert Islands. Contamination of fish. Tuna fish have been caucirt in tie northern viarshalls rs R followin; the firct cetmation but results are not yet availavle. Mish caught after the MIKE shot of IVY 2-1/2 to 3-1/2 miles fron the crater 0 days after tne shot gave the Vvolloving resuits: 4 le ee Activity in woole fish (averages) 0b ye/eran Activity in Tismres = (ut Vel: hts) (a) Buascle oPeesgram wet tissue (re = stlerovari«) (0) (c) Liver «+ 1 per ran ont - 34 pelpra From considertions of current, the depth of maxing of surface water, the rate of decay of Sission products and tue decree to wich Pish in contan na tea water tend to ausorb fission products, it reached the conelision that the probavllity of sionkitcant contamination of fish mitsive Lhe innedate test area is inconsseqnentl:ab and that dn abl Likelileod we vihi ve unable to detect these waters more than a few hundred mides awa from the sarshal). (Islands. the attemnt, of course, Klil ve cre tn mensure Lils conbam nn « one 1 8 a John ine ares tear MM eT, toute Division af Siolovy end vedicine