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The Guardian - UK
The Guardian - UK
Business
Alex Lawson and Anna Isaac

‘Dirty 30’ and its toxic siblings: the most dangerous parts of the Sellafield nuclear site

Sellafield nuclear site image
There have been longstanding concerns over leaks from the Sellafield nuclear site, previously known as Windscale. Composite: Guardian Design/Getty Images

Radioactive sludge

In the early 1950s, a huge hole was dug into the Cumbrian coast and lined with concrete. Roughly the length of three Olympic swimming pools and known as B30, it was built to hold skip loads of spent nuclear fuel.

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