Interesting. Let me add that I recently carried a couple of kilogrammes of raw chemicals for D76 through Heathrow Airport (London, UK), and got them on my plane as part of my baggage. I flagged it to the personnel when checking in, and they did not even bother to ask about hazard levels etc.
Even more intriguing, as I moved the chemical plastic bottles from their cardboard box to my bag, i was left with an empty cardboard box and nowhere to bin it. Again, I asked airport personnel what to do with the box, and they told me to put it on the floor, as it would picked up by the cleaners. So: Raw chemicals admitted onto a plane, an empty (but you could not really know that, could you?) cardboard box sitting on the departures terminal floor. So much for tight airport security!!