France nuclear: Marcoule site explosion kills one
According to BBC News, there was no risk of a radioactive leak after the blast, caused by a fire near a furnace in the Centraco radioactive waste storage site, said officials.
The plant's owner, national electricity provider EDF, said it had been "an industrial accident, not a nuclear accident", which was under control.
There are no nuclear reactors at the southern French site.
The explosion hit the area at 11:45 local time (09:45 GMT). A security cordon was set up as a precaution.
Interior ministry spokesman Pierre-Henry Brandet later said there had been no leak of radiation, neither inside nor outside the plant.
The Centraco treatment centre belongs to a subsidiary of EDF. It produces MOX fuel, which recycles plutonium from nuclear weapons.
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