Robot submarines are to be used to sweep particles of plutonium and other radioactive materials from the seabed near one of Britain's biggest nuclear plants in one of the most delicate clean-up operations ever in this country.
Each submersible will be fitted with a Geiger counter and will crisscross the sea floor to pinpoint every deadly speck close to Dounreay on Scotland's north coast before lifting each particle and returning it to land for safe storage.
Two kilometres of beach outside the Dounreay nuclear plant have been closed since 1983, and fishing banned, when it was found old fuel rod fragments were being accidentally pumped into the sea. The cause was traced and corrected but particles - including plutonium specks, each capable of killing a person if swallowed - are still being washed on to this bleakly beautiful stretch of sand and cliff on mainland Britain's northern edge.
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