9. Dissipation cf radioactive fall-out in ocean waters dg not a srac.al spreacing out of the activity from the region ef highest concentration to uncontaminated rerions, but that in all probability the process results in scattered pockets ard streams of higher radloactive materials in the Pacific. We can speculate that tina which new show radioactivity from ingested materials have been living in, or Lave possed through, such pockets; or tave been feecing on plant or animal life whicn has been expogped in these areas. 10. Mr. Hansen warted copies of any official pronouncenent on the matter by tie Food and Drug idministration. We furnished a copy of Commissioner Crawford's statement of March 26, 195L to our Anbassador to Japan. We stated that since this statement was issued very early in the courge of our monitoring operations, we felt that it did not have much value for the situation now confrogting the Britis: Government. ‘ Mr. Hansen said tiat tne unpubiisiec information we furnished would be used only as background inforaation by his government, and would :ot be publicised. act ert of Energy wm ot ee wen eee i rem ON pres Seemann eet ons -j- ais ““uisresian's Office "ARCHIVES ay pee Fe By eo eee Se