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Radioactivity in the Severn Estuary, off the Welsh coast, is apparently being
spread up rivers by eels. Last year, high levels of the radioactive isotope
tritium were found in fish in the estuary. The pollution is caused by legal
discharges from a plant in Cardiff run by Nycomed Amersham (This Week, 31
October 1998, p 10). Now scientists working for the Welsh Office have found that
eels in the River Taff, which runs through Cardiff, are similarly
contaminated.