When fires become destructive, it is almost always because multiple layers of safety measures fail at once, says an academic. OTTAWA: In the early hours of Jan 1, a fire ripped through Le Constellation bar in Crans-Montana, Switzerland, killing 40 people and injuring 116, many of them severely. Investigators believe the blaze began when sparklers on champagne bottles were held too close to the ceiling, igniting interior materials. The investigation is ongoing, and it is premature to draw