The Houston school system was no longer using the three-story structure, so it was available for use by Katrina evacuees.

NPR: A Charter New Orleans School �� In Houston

He said crews were being helped by Hereford-based recycling company Wye Valley Metals which is using specialist vehicles to remove the structure and contents of the building from the site.

BBC: Scene of fire

Using the new method you could have your cake and eat it, by designing a strong core to a structure that has a weaker, temperature-resistant surface, he says.

ECONOMIST: MONITOR