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In page Sellafield:

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1983 was the year of the "Beach Discharge Incident" in which radioactive discharges containing ruthenium and rhodium-106, both beta-emitting isotopes, resulted in temporary warnings against swimming in the sea along a 10-mile (16 km) stretch of coast between St. Bees and Eskmeals.[13][14] BNFL received a fine of £10,000 for this discharge.[15] 1983 was also the year in which Yorkshire Television produced a documentary "Windscale: The Nuclear Laundry", which claimed that the low levels of radioactivity that are associated with waste streams from nuclear plants such as Sellafield did pose a non-negligible risk.[16]