Radiation Standards for Hot Particles 7 A Report on the Inadequacy of Existing Radiation Protection Standards Related to Internal Exposure of Man to Insoluble Particles of Plutonium and Other Alpha-emitting Hot Particles. February 14, 1$74 Arthur R. Tamplin Thomas B. Natural Pesources CPefernse Council 1710 N. Street, N.W. Washington, D. C. 20036 Cochran