Letter of Notification to Participants (Over-5-rem Group) Date Name Address City, Dear State Zip Code (Name of Participant): The Department of Defense (DoD) is presently reviewing the radiation exposure record of DoD personnel who took part in atmospheric nuclear weapons testing, 1945-1962. The purposes of this program are to assist -individuals involved and to obtain radiation exposure data, so that detailed research can be conducted to determine if there is any correlation between exposure to low-level external ionizing radiation and subsequent incidence of certain diseases. Our records and current research indicate that radiation exposures to the approximately 250,000 DoD test participants The average dosage was on the order of about half a rem (a rem is a unit of radiation dase in man), oS a were quite low. z=