[michigander]

Here's another copy of the article.

U.S. troops find signs of chemical readiness

[Clint N. Suhks]

Col. John Peabody, engineer brigade commander of the 3rd Infantry Division, said troops found thousands of five-centimetre by 12-centimetre boxes, each containing three vials of white powder, together with documents written in Arabic that dealt with how to engage in chemical warfare. A senior U.S. official familiar with initial testing said the powder was believed to be explosives. The finding would be consistent with the plant's stated production capabilities in the field of basic raw materials for explosives and propellants.

I believe you are right...but I don't see how thousands of tiny bxes add up to 380 tons. Nor does it prove it were still there April 10.