ABSTRACT External exposure rate surveys from 1975 to 1977 on the islands Nam. Eneu and Bikini of Bikini Atoll gave average external exposure rates of 24, 5.7 and 32 pR/hr respectively. The exposure rate on Eneu Island is uniform, whereas those on Bikini and Nam range from 7.0 to 80. uR/hr. Based on an assumed living pattern at Bikini Island, the adult male Bixinian is estimated to be in the presence of an external radiation field corresponding to 16 uR/hr due to debris and fallout from the 1954 BRAVO incident. This corresponds to a 30 year dose equiva. lent of 2.8 rem. - iii-