given field reading corresponding to the sample area for all other samples is entirely unknown, With the available data and in view of the gemple treatment from recovery to analysis, the following values were gelected as a eet of reasonadle values for the radiation field to sur~ face density ratio: (1) Coral (ratio of r/hr at 1 br to mg coral per aq ft); Shot 1 - 0.04, Shot 2 = 25, Shot 3 - 0.05, (2) Sea water (ratio of r/hr at 1 hr to wl sea water per sq ft); Shot 2 - 20, Shot 3 - 200, Shot 4 - 10, (3) Device Components (ratio of r/hr at 1 hr to fraction of device per 69 ft); Shot 1 ~ 20 x 1ol4, snot 2 - 25 x 1012, shot 3 - 3x 1012, Shot 4 - 50x 1012, The constancy of these values should serve as a means of testing the reliability of sampling methods, testing the reliability of the component analysis for tracing fallout components, and, in the absence of a redicactive component (fission product surface den- sity data), to furnish a guide as to the radiation field associated with a given surface density of debris material. 81