How the Grenfell fire spread

Dozens of people were killed and injured when London's Grenfell Tower went up in flames last year. The fire spread under dangerous ornamental cladding designed to make the aging structure, which lacked sprinkers, look modern. The BBC made a set of graphics to show the terrible speed of the blaze, which leapt up through 20 apartments within 10 minutes.

A resident of flat 195 on the 22nd floor called emergency services to describe smelling smoke, but was advised to "stay inside and keep your door and windows shut".

They kept telling them to stay put for nearly two hours. 72 dead.

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