enaDia re sone eight tines sreater than the 3-cn-and-coeper dosa fron the harder ganna components was otserved, This is seen to be of the sane ord tact with the ;round, An estinate of sxin duse due cround contanination for the Rongelap case would result, for exayple, in a figure of about 2900 rep tothe doraof the fcot, “4 rep at the hip level, and 305 rep at the head if countimiois exposure with no shielding occurred. Sone re:ction in dose undoubtedly resulted froa shielding and novirent and it seems crobaile that the external beta dose from local shin contuni« nation far outweiphed in importaace that from the ~round. This is eiphasised by the protability that clothiag reduced the beta dese fron the ground by 10 to co percent, +adap eicie tase.delenlibal, ‘ of nmamitude as that estisated abow, At heishts atove and below the 3-foot level, this surface dose ‘ > would becaie lower and hisher, respectively. Fut, since it is due to soft radiation of short ranse, it probably would not exceed 50 tines the 3-fcot air gamma dose or &0 times the sidline dose, even in cen-