which had made the pane, they found that minute crystals of nickel sulphide trapped inside the glass had almost certainly caused the failure. When fragments were analysed by experts at the giant glass manufacturer Pilkington. On 2nd August 1999, a particularly hot day in the town of Cirencester in the UK, a large pane of toughened glass in the roof of a shopping centre at Bishops Walk shattered without warning and fell from its frame. Flawed Beauty: the problem with toughened glass
