Around 980 million litres of radioactive waste water have escaped from a fertiliser plant through a sinkhole.
The incident happened at the end of last month after a 15-metre wide hole appeared adjacent to a storage lake belonging to the Mosaic company near Tampa.
The contaminated water contains slightly radioactive phosphogypsum, which is a waste product of the fertiliser manufacturing process.
A spokesman for the company said they were recovering the water using pumps and it had not yet mixed with groundwater supplies which are used as Florida’s main drinking water source.
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