.-. .4 -,- .“” . tissue (i.e., far beyond the 0.007 cm penetration depth assumed by Standards setting bodies in estimating skin dose. Also$ one should determine whether or not there are co-relations or synergistic rela~~o~ betweeu beta-radiation and UV as there are between UV-A and UV-B in the induction of skin cancer. One might is the predominate ulignancy 5. Since a suspect that skin cancer -- on the sun baked islands. large fraction of the radioactive contamination on the islands should be 90 Sr + 90Y, and since 99 percent of Sr is deposited —- in the skeleton, why did the authors not dincuss bone dose and radia,, tion induced bone sarcoma and carcinoma as well as leukemia from active bone marrow irradiation in the trabecular bone matrix? -6 Published values of bone cancer coefficients range from2 x 10 -4 cancers per person rem depending on age, radionuclide~ to 2.2 x 10 type radiation, etc. n 6. Some of the comparisons of population exposure given do not add to the quality of the report. Us. If natural background radiation in the causes 6 x 10‘4 (c/pr) 80 mrem/y x 220 x 106 persons x 10-3 = 10,000 lethal cancers/y in the U.S., the obfi’tive shouldbe to xeduce this background radiation -- especially that due to I