If more than one person either saw and/or heard a plane going over the depot right before the explosion, it does seem logical to conclude that they MIGHT have been right, not just dismiss their claims because there is no log of a plane taking off or landing at the nearby airport.
I just have this nagging distrust of government statements, that's the way I am and I can't change at this late date. I also have a nagging distrust of Islamic terrorists.
I've been watching the news over here for the last 24 hours so far not a single person has gone on the media and said they saw a plane hit it. There have been plenty of people who have said they 'heard someone say someone saw a plane going down first', and plenty of people who say 'When I first heard the blast my first thought was a plane had gone down' but nobody at all has come forward and said they *actually* saw it. I'll swear some panic mongers actually *want* it to have been an act of terrorism as somehow the story is less boring otherwise.
Didn't you have a very, very similar disaster over in the States (Texas) last year that had even greater loss of life but was, when it came down to it, a terrible accident?
http://news.bbc.co.uk/1/hi/world/americas/4377519.stm