These WMD shells were manufactured at the same time as the shells currently being used as IED's.
Just as effecive and just as deadly.
what the media also fails to take into consideration is that we've been in Iraq for over three years now, time that Saddam has not had access to his weapons and time for them to get less potent.
so even if it's true that the weapons from pre 1991 are not as much of a threat as they used to be, part of that reason is because we've occupied the country for the past 20% of that time period.