radioactivity (2300 —4700 counts/min/50 g plant ash) was associated with oxalate precipitate. A small amount of activity in the Zn groupis attributed to Zn®> produced by reaction zn* (n,y) from Zn employed in the mechanical parts of the bomb. Sr-Ba radioactivity was 0.1 that of the rare earth group. Distribution of the radioactive elements was nearly the same as that found on the No. 5 Fukuryu-Maru. le tiesew 167