Top Canadian officials responsible for radioactive waste and redundant nuclear plants called at Harwell to see a major clean-up project.

Peter Brown and Dave Macauley, who were keen to learn more about the Atomic Energy Authority's plans for decommissioning and restoring nuclear sites, inspected an 18-acre waste dump next to Chilton Primary School, now being cleaned up.

In the past, laboratory wastes from the site including low-levels of radioactivity resulted in the pollution of natural underground water sources.

Mr Brown and Mr Macauley are from the Canadian Department of Natural Resources, Ottawa, which manages Canada's redundant nuclear facilities and radioactive waste.

Originally a wartime RAF base, Harwell International Business Centre was for many years a world-renowned centre for nuclear research. For the past 20 years, an assortment of bombs and low-level radioactive and chemical wastes have been recovered from the southern storage area dump.