On 2004-02-13, Peter Gottlieb wrote:
X-rays most definitely can erase UV-EPROMS and their OTP cousins. Had that
happen a few times, drove me nuts until I figured it out and had the
shipment on an "open and inspect" basis rather than x-ray inspection.

Was this on the hand or checked baggage x-ray? The hand bag scanners
are very low intensity; rarely fog even 400asa film, checked bag
scanners are more intense (or so I've heard).

Either is less intense than a 22 calber round.