The 155-mm shells containing sarin gas that exploded in Iraq May 17 were manufactured before 1991, a senior U.S. official said Wednesday. That was a pre-Gulf War shell, a different category than the weapons being sought by the Iraq Survey Group, Brig. Gen. David Rodriguez, the joint staff deputy director for operations, told a Pentagon news briefing.
For what it's worth in the debate over the shells.
Sarin Shells Made Before 1991 War