16 The total dose received was the sum of the external and in ernal doses. The external whole-body dose was estimated by measuring the exposure in air {e.g., at 1 meter above ground) and applying a actor The based ultimately on measurements with phantoms to the meter rea ing. internal dose was estimated by the Livermore group on the basis of an assumed diet and the analysis of the radionuclide contents of R ngelap food products in it. The lagoon and its fish were found to be a trivial source f dose. Ground water (well water) was an unimportant source, since its ctivity was very low and, in any case, the people relied heavily on cat hment of rain rather than wells (Noshkin et al 1981). Before considering the data, the nonprofessional reader ma consult Note 6 which explains the radiological usage of such te exposure and dose, and the definition of their units. It may a noted here that my use of the term whole-body dose (internal) u signifies the committed effective dose equivalent; the tissue (internal) is usually the committed dose equivalent. The Liver Laboratory calculated its doses as integral doses, i.e., for a period of time, the annual dose for each year was summed. wish to ms as so be ually ose ore tated