-22- strontium-90 and pandanus the most. Those rations with higher zinc-65 also contain higher levels of stable zinc, indicating that local sea foods may be the main source of zinc in the diet. Cesium-137, strontium-90 and cobalt-60 show no definite corre- lation with stable potassium, calcium and cobalt respectively. There is probably a net addition of minerals to Rongelap soils from imported foods.