Outline 1.1 Nature of the Event and Description of the 1.2 Whole-Body Gamma Doses. 1.21 Characteristics of the Radiation. 1.22 Duration of the Exposures. Exposed Groups. 1.23 Geometry of the Exposures. o ep th mT bu au a 1.3 Estimation of the Doses From Beta and Soft Gamma Radiation. 14 Summary.