UPDATE on 5/10/12… Explosion damages New Smyrna Beach ice plant (fire officials blame ammonia leak in off-hours blast – a steel door landed about a 100 feet from the opening following a very early morning explosion at the ice plant – while the cause is still being investigated, New Smyrna Beach Fire Marshal said a preliminary review seems to point to a slow ammonia leak filling part of the building before finding an ignition source – “We are not sure how it happened,” he said, although it is suspected the explosion may have been sparked by one of the numerous electric motors operating in the building almost around the clock – officials estimated the blast caused $300,000 damage to the building, including a 30-by-30-foot hole in the roof as well as forcing out roll-up and standard doors – the building’s south wall also was blown out)