The U.S. Army releasing findings of its anthrax investigation after live spores were inadvertently sent from a defense department lab to other labs around the world.

FOX's Lisa Brady reports:

The defense lab at Dugway proving ground in Utah mistakenly sent live shipments of anthrax to nearly 200 labs... And it turns out... There was more.:

(Ostrowski) "We went to the archives into the freezers of everything that we had at Dugway and what we were able to find is 33 separate lots since 2004 that we had thought had been inactivated."

Instead, 17 of those lots were able to grow during testing. Army Major General Paul Ostrowski:

(Ostrowski) "There's a very fine line of what it is that we're trying to do."

Just the right amount of irradiation or other methods, so that spores are still usable for things like vaccine production, or testing detectors.

The Army's now working with the CDC on a national standard, but the former commander of the Dugway lab, now a Brigadier General, is one of a dozen people facing possible punishment.

Lisa Brady, FOX News.