That is what the experience of Sir Bernard Crossland, a safety expert who led the inquiry into a disastrous underground railway fire in London in 1987 which killed 31 people, suggests.

ECONOMIST: Disasters

CHICAGO, Illinois (CNN) -- Thick black smoke poured from an underground electricity vault fire Thursday in downtown Chicago, forcing police to halt traffic in the famous Loop.

CNN: fire

At 135.1 hectares (333.8 acres) the airfield has three tarmac runways, a control tower dating back to the 1940s, a fire station and various underground structures from the decade.

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In the guided tours category, those ideas include the Seattle Underground Tour, which takes visitors through parts of Seattle buildings that were largely built over after the Great Fire of 1889.

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Mr Adair used underground water to soak the area for miles around and then laid explosives, with which he blew out the fire.

ECONOMIST: Obituary