-~ 25 October 11, 1965 The non-exposed control population continues to be free of nodular thyroid disease, This extremely high incidence of thyroid disease in the exposed population must be considered the result of their exposure to fallout. Dr. Conard and his group will return to Rongelap in February 1966. Meanwhile, therapy with synthetic thy= roid hormone has been instituted in an effort to control further nodule formation, Surgery is being arranged for the five new cases of nodular thyroid disease, You will be kept informed as this develops further, Obviously, there are many aspects to these findings which will excite both medical and lay interests, 0s « L. Dunham, M.D. Director Division of Biology and Medicine Attachment: Memo dated 7/12/65 DOE ARCHIVES