. . - 20 =~ In the context of his comment it is interesting to refexr to the National Academy of Sciences, National Research Council report of 1961 on the Effects of Inhaled Padioactive Particles. [{c] The first sentence reads, "The potential hazard due to airborne radioactive particulates is probably the least ungerstood of the hazards associated with atomic weapons tests, production of radioelements, and the exoaniing use of nuclear energy for power production." A Gecase later that statement is still valid. Finally let me quote Drs. Sanders, Thompson, end Bair from a paver given by them last October. [dad] Dr. Bair and his colleagues have done the most relevant polutonium a "Nonuniform irradiation the luna trom deposited radioactive particulates is clear’: ari) more carcinogenic than uniform exposure fona . tota.-iung dose basis}, and alpha~-irradiation is more careinsrenic than beta-irradiation. The doses recuired For 2 substantial tumor intidence, are very high, however, i= measured in proximity to the sarticle; and, acain, there are no data to establish the low-incidence ens ci a cGose-effact curve. And there is no general theory, ao: data on which to base a theory, which would permit extrapolation of the high incidence portion of I agree and the curve into the low incidence region." TI succes. that in such a circumstance it is appropriate to view the standards with extreme caution.31l U. S. SAS-NRC Subcommittee, Effects of Inhaled Radioactive Pariictlss. Report of the Subcommittee on Innalation Razaris. Committee on Pathologic Effects of Atomic Raaisation. National Academy of Sciences - National Rasearcn ceuncil, 84. Washington, D. C. 1961. Publication NAS-URC/PUB-3948, 1961. Santer:z, C. Cancer ise Response Studies with Radionuclides." In: , R.C. Thompson, and V.J. Inhalation Carcinoaenesis. Bair, “Lung Proceedings of a Biology Divisicn, Oak Ridge National Laboratory, conference held in Gatlinburg, Tannassee, October g-1l, 1969. <1.G. Hanna, or., P. Nettesheim, and J.R8. Gilbert, eds., U. 3. sRcomic Enerav Comnission Svmsosium Series 13, (CONF-691001). 1970. QO ty ft tO ib (2 oue 1 ne H uw Le a: “ee trot hae * yo meocy ir wu ue 1 ma Livervoarea Laboratory, Calif., nent 21-79, horh? 19, 1979, tuted ia Undercround Uses of Suclsaarc Ererw, Part 2, Uearins: the f.bronmatiae on Air and Warer Pollution of the ety ol t' iw oo I co. 243-363. tet 3, on Puslic 22°35, 2D, Works, Ub. 1530-1522. S. Sanate, 9ist Congress, Ind Sessic