It's 50 years since the Sellafield magnox reprocessing plant began operating.
In that time, the West Cumbrian facility has reprocessed more than 50,000 tonnes of spent nuclear fuel.
It will reprocess a further 3,000 tonnes before it closes in six years' time.
The plant separates spent fuel rods into plutonium and uranium which could be reused in power station in the future.
More top news
Emma brings you Saturday's forecast
Longest cold spell of winter so far. Mainly dry and bright, but feeling bitterly cold today. Very wintry further east, blizzards possible
Mountain Rescue has seen a 5% increase in rescues and with the current conditions they're advising people to take extra care.