OFFICIAL USE ONLY TABLE ONE RELATIVE RADIATION DOSES TO GASTROINTESTINAL TRACT, FROM INGESTING INSOLUBLE RADLOACTIVE FALLOUT Time After Detonation Intake Occurs Limiting Case * 1st Hour ist Day Stomach 14 0.086 0.03 ‘Small Intestine 0.39 0.068 0.03 Upper Large Intestine 1.7 0.81 0.49 Lower Large Intestine | 1.0 1.0 1.0 *Based on assumption that there is no significant decrease in activity during time of passage through gastrointestinal tract. After a week following a detonation the decrease in activity between the midpoint of time in stomach to midpoint of time in lower large intestine is within 20% of this condition. OFFICIAL USE ONLY

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