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Newswire : Down but not out

点击量:   时间:2017-10-08 04:02:08

Luminous exit signs dumped illegally on waste tips in England and Wales are contaminating streams and groundwater with radioactivity, according to a study by the Environment Agency. The signs, illuminated by 1000 gigabecquerels of radioactive tritium, were widely used in public buildings during the 1970s. The agency commissioned the study, due to be published next month, after scientists found levels of tritium of up to 1200 becquerels per litre in water leaching from a dozen landfill sites (This Week, 2 March 1996,