Another radioactive particle from the Dounreay nuclear complex in Caithness has been found washed up at nearby Sandside Beach. It brings to 74 the number of hotspots which radiation surveyors have recovered from the area.
Three radioactive hotspots were found at the public beach earlier this month.
The metallic fragments of reprocessed reactor fuel are linked to a rogue historic discharge from the plant, which is being decommissioned.