The Defense Nuclear Agency (DNA) is DoD's Executive Agent for the NTPR program, which involves research and assistance The magnitude teams in each of the four Military Services. of the effort is illustrated by programmed costs of about | $6 million per year and personnel commitments of about 150 person-years per year (Tab A). Progress of the NTPR program to date has been significant. Of the estimated 250,000 DoD participants in the tests, over 145,000 have been identified by name, and preliminary dosage information has been recovered for over 45,000. A significant aid to our research has been information supplied by the participants themselves. In February 1978, DOD established toll-free telephone lines and advertised widely for test participants to call in, establish two-way contact, and provide information on test participation and current status. To date about 30,000 have called in or written, many of whom have supplied the names of other participants, old copies of orders, rosters, and the like. The research continues and currently consists of reconstructing rosters from morning reports and ships' logs, searching medical records and other radiation dosage repositories, and reconstructing dosages (using calculational methodologies) for personnel for whom film badge data cannot be located. It is estimated that the NTPR program will continue for about two more years. Based on current research, it is apparent that most exposures to DoD personnel during the tests were quite low-~-averaging on the order of about one-half a rem. Of course, many received no exposure at all, theless, and some received more. Never- indications are that only a very small percentage exceeded 5 rem per year, the current Federal guideline for most radiation workers. One of the principal sources of exposure data is the file of the Reynolds Electrical and Engineering Company (REECo), a contractor of the Department of Energy (DoE) (formerly the AEC), which is the official master repository of dosage records for the atmospheric nuclear weapons tests. A summary of whole-body gamma radia- tion dosages from REECo for the years 1945-1962, some 232,000 entries, is enclosed (Tab B). While this file includes both DoD and non-DoD personnel, our research indicates it is quite representative of the distribution of DoD personnel exposures alone. Backup REECo statistics for continental Lesting, oceanic testing, (Tab C). and both combined are enclosed