ou NWT J00/d31d09 IV CONTINUED DEVELOPMENT OF MIKE CLOUD MIKE cloud has "’splashed'' against the base of the stratosphere about six minutes after detonation. One of ‘the most significant de- toils in this photograph Is the appearance of the “‘plume’’ above the laterally spreading canopy. Theoretical analysis of bomb clouds (see Section I!) would Indicate that most ‘of the ‘radioactive ‘debris ‘would be contained in this “Splume’’. Results of the cloud sampling pro- gram would tend to establish this ‘conclusion, and Indicate a fundamental operational diffleulty. | The canopy {s ‘now approaching Its maximum dimension, some seventy fo eighty miles in diameter. Stratus ‘clouds in ‘foreground in height ‘under influence of ‘the ‘induced ‘circulation. ", FS)fp tS cre almost completely dissipated, and ‘cumulus ‘continues ‘to Increase ‘a3 ]-

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