00 TTot j= a a ran 1 dR ap . - ~ 1 eee ee + . 1 : ‘ ! Lo) rT TIME 4FTER SHOT SLOPE OF CURVE, | (HR} 95% CONFIDENCE LIMITS bind 010-013 0.13 - 0.27 027-175 1 75-6.0 60-115 115-230 -1.85 -1.351 1.209 1.084 -0.869 NO 230-349 T — T “Tr a a J i a _ XN | | ———— ho | _ — [ — -1322 4 0015 _d RELATIVE GAMMA DOSE RATES +027 4 0.012 + 0.007 + 0.008 + 0.012 DATA — 1 we we _ ae + ! | Ry — 4 4 | j i L 01 —T SLOPE OF MIN | | | co! Ol _- : pobre get i R bo } 100 TIME AFTER SHOT (HR) Figure 3.42 Gamma-ionization decay of contaminant collected in 6-inch-thick lead cave on DD 592, Shot Umbrella. 717

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