An Army contractor that recently finished destroying a deadly nerve agent stored in western Indiana will hold a public celebration this weekend marking the milestone.

Saturday's event at South Vermillion High School in Clinton will include speeches by officials with the Army's Chemical Materials Agency and Army contractor Mason & Hanger Corp.

Workers who began destroying the depot's VX nerve agent stockpile in May 2005 eliminated the last batch on Aug. 8. The project's waste was shipped to Texas for incineration.

The Newport depot about 70 miles west of Indianapolis was the nation's only production facility for VX, a chemical weapon so deadly only a tiny droplet can kill a human.

The VX destruction was mandated under an international treaty.