UK Firefighters now face potentially catastrophic consequences due to sudden and rapid building collapse According to American authorities, we still have a potentially fatal problem with the construction of steel-structured high rises, which could disintegrate without warning after only 6 hours of office fires... This should be of great concern to EVERY serving fireman and woman around the World. Many are totally unaware of this risk. Buildings will have to be retro-fitted with new fire-proofing, and constructed with new design methods. Firefighters should refuse to fight skyscraper fires until that has happened...

The US National Institute of Standards and Technology [NIST] claim that the building illustrated , collapsed to into a small pile of rubble, symmetrically, into its own footprint, within 7 seconds DUE TO NORMAL OFFICE FIRES.  

Good luck to all our firefighters...