Experts have been working through the night to try to stop toxic water flooding out of a disused mine near Truro.
Pumps are at full capacity at Wheal Jane, but levels there are still rising following heavy rain. It could mean polluted water leaks into the nearby river and Fal Estuary, a marine special area of conservation. The fire brigade has also been called in to help.
In 1992 flooding from the mine turned the estuary into a polluted swamp.
More top news
Penny and Chris Hammill were airlifted from their home after the flooding. They may now not be able to move back in for 4 months or more.
Restaurant Nathan Outlaw in Port Isaac has bumped off Cumbria's L'Enclume o be named the best restaurant in the UK by The Good Food Guide.
Bob has the forecast for Bristol, Gloucestershire, Somerset, Wiltshire and Dorset.