correction of overnight decay. Readings taken during the day's operations were corrected back to the initial readings for that day by applying the -1.2 law. Results The average initial gamma intensity and residual gamma a intensity percentages are summarized on Table 6.5-1 for each oT surface. if . | Preliminary data indicates that salt water washdown is effective in minimizing contamination of construction surfaces under the conditions of this test. | Conclusions The contamination resulting from this detonation is ms of a very tenacious nature. “4 Under the conditions of this contaminating event, vertical surfaces became more highly contaminated than horizontal surfaces, with sloped surfaces having intermediate contaminstion. The contamination as deposited under the conditions of this test presents a much more difficult removal problem than i LANL RC Ww ° ‘ enennt . { coPiED/DOE sa 3 a ty the dry contamination encountered at Operation JANGLE. \

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