ee. — +t SUMMARY Gamma radiation emitted by selected fallout samples collected at Operation REDWING was spectrometrically analyzed for the purpose of determining its characteristics (expressed in terms of absolute photon intensities for each discernible gammaline) as a function of time after shot. Since the absolute photon intensities are given and most samples represent known fractions of the area of the fallout collectors, one result is that dose rates in the vicinity of the collecting site can be calculated. Another important result of the analysis suggests that Na* becomes an increasingly important contributor to the radiation hazard from ~ at — times after detonation iii