[Travis McGee]

Good questions. Certainly, the same supply of commercial grade explosives in Spain could have provided electrical blasting caps. But who knows?

[piasa]

Bin Laden's past of being in the road construction biz probably means they have easy access to blasting caps and other detonators. Also, it may be that the bag that had this guy's fingerprint on it had different contents originally than what was ultimately found in it.