- for a fewshours without receiving any persistent contamination of even. moderate decree. Sending. ships into conteninated water was done only te accomplish impartant missions and for the chortest possible tine. Some hulls apparently were much mere readily con timinatec then others. Sendins a ship isto uncontaminated water for a few hours after such expesure secmoc to have very little effect on tho contaninatien picked up in the salt weter systens, end a etay of soveral cays in uncentaminetod weter cecreased centenination oore then natural redieactive “ccay. Fresh water - eistillce Zron contaninated water was foun’ to be non-radioective in all ceses, ovcn when, in cne case, distilled from wetor readinz 30 ar/ar ea fow foot edcve the surface. 2. Consiu3isns — a. c oeration CaSTio forcibly demonst rated the sorious radio- locicel contcminetion, and attendant personnel hazards, resulting from fallaut following a nuclear ground burst, net <oly withia a few niles ?rom g:vucd zero, but also neny miles distant. ‘ %. ‘with xinor oxscptions, the radtclicical savety program wag nlanned anc carried out satisfactorily. c. Presently proscriced aethods ef 2econtaninrticn of ships and >ersoanel are -zonorelly effective, but subjcet to ieprovenent. a. Shins normally meec not te withérewn from sli-htly con- tanineted weter for fear of excessive conteminatien of srlt water systens, nor for fcar of cententnetion of distilled. fresn water. e. Tha nunber of 11m Badges, togather with rersonnol ant facilities required for processing then, was insufficient. Je15