English: Tower block collapse. Canning Town. This was Ronan Point, a 21 storey high block of flats in East London. Completed on the 11th March 1968. Just two months later on the 16th May, a gas explosion on the 18th floor blew out the walls supporting the floors above, which brought about the progressive collapse of this corner of the block, killing four people. Luckily it occurred at a time when most of the residents were still in bed away from the destroyed sitting rooms. The block was re-built quickly but subsequently demolished in 1986