LAST OF the four reactors at the Ukrainian nuclear power station Chernobyl is to be shut down.
Three reactors remained in operation after Chernobyl's No 4 reactor went critical in 1986.
Reactors No 1 and 2 were closed last year.
A multibillion pound decommissioning scheme is now being drawn up, provisionally valued at 21bn roubles ($735M) a year.
Work is continuing on the project to stabilise and seal the sarcophagus containing the No 4 reactor. There are fears that without major civils work it will collapse, releasing toxic dust.
Funding from the G7 nations is being administered by the European Bank for Reconstruction & Development.