RADIATION STANDARDS FOR HOT PARTICLES 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, 1974 r ARTHUR R. TAMPLIN THOMAS B. COCHRAN Natural Resources Defense Council 1710 N Street, N.W. Washington, D.C. 20036