of chromosome aberration which is attributable to their radiation exposure. Conard et al. (1980, BNL 51261) has stated that this finding is consistent with the Japanese A-Bomb data. Of profound importance is the Cciscovery that a higher incidence of chromosomal aberration occurs amona the Marshallese group exposed to low-level radiation as opposed to the higher dose group. This same phenomenon occurs with respect to the incidence of thyroid cancer among the exposed Marshallese, whereby the lower dose group (i.e., Utirik Atoll) has a significantly higher ratio of thyroid maliaqnancies than the higher dose group (i.e., Rongelap Atoll). This major finding among the Marshallese suggests that at higher doses of ionizing radiation the impacted cells are destroyed, whereas at lower doses the cells are merely maimed and/or maligned, and may be spared for a later maliqnancy or chromosomal chanae. This suggests that low-level ionizine radiation mav he far more deleterious to human health than was previously believed, and it is this type of radiation dose the majority of the atomic veterans received during the above-ground testing period. SUGGESTIONS TO THE COMMITTEE REGARDING A HEALTH SURVEY Based upon the forgoing testimony, it appears that the possible adverse health effects associated with exposure to ionizing radiation--and especially at low doses--may constitute a far more serious health problem than was previously assumed. Moreover, as the scientific and medical evidence continues to filter in concerning health effects beyond cancers and leukemia,