Aa i 3rd DRAFT ACESS1.4 GMDunning : vm 4-29-57 CRITERIA FOR ESTABLISHING SHORT TERM PERMISSIBLE INGESTION OF FALLOUT MATERIAL Gordon M. Dunning Diviegion of Biology and Medicine Atomic Energy Commission Washington, D. C. The criteria for establishing permissible ingestion of radioactive fallout material under emergency conditions for several weeks following a nuclear detonation are dependent primarily on exposures to the, &. gastrointestinal tract from the gross fission product activity, b. thyroid from the isotopes of iodine and, c. bone, principally from gr? yy| gr89 pal40_7,140 | I. Doses to the Gastrointestinal Tract The following principal assumptions are used in calculating the doses to the gastrointestinal tract of adults: a. The calculations are based on the methods contained in reference one. b. The fallout material is 90 percent insoluble. (See IV. Discussion below). c. Re US DOE ARCHIVES 326 U.S. ATOMIC ENERGY COMMISSION Collection DoS M¢Cyaud Box ‘+ | The activity decays according to the principle of (time) Job 1320 Folder MHs !4% 6-4 Falfevt-mise 1959-/9E2 -l. e poe] : CONFIRMED TO BE UNCLASSIFIED OF DCE/OCG BY AUTHORITY REVICWED BY popu? DATE / 3Y ne