Hi, please feel free to crosspost this as necessary as it's pretty interesting stuff and rather a change to previous advice. I'm assuming that anyone travelling with valuable MD recordings would keep them in their hand baggage - right? Well, a friend of mine didn't and found that his 11 field recordings had been erased when he got home. He was puzzled as to what had happened and since we knew that discs must be heated before x-rays can have any effect on them, he couldn't fathom how this had happened. Ringing the airport, however, he discovered that hold baggage went through a heat exchanger in order to melt the cellophane security wrapper onto the bag, and that this machine was located right next to the big nasty x-ray machine. If you plan to travel ANYWHERE that is using this process then use your common sense and carry those irreplaceable recordings safe in your hand baggage! DJ