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Firefighters' key Fukushima mission

23 February 2012 Last updated at 06:38 GMT

One of the key tasks in preventing the risk of nuclear meltdown at the Fukushima nuclear power station in Japan a year ago, was carried out by a team of Tokyo firefighters.

In dangerous radiation levels, the men mostly over 40, had just 60 minutes to lay 800m of fire hose to help pump sea-water from the coast to the reactor buildings.

The clip including Tokyo Fire Department footage is from This World: Inside the Meltdown broadcast on BBC Two at 21:00 GMT on Thursday 23 February or watch online afterwards via iPlayer (UK only) at the above link.