The Army says it has reached a milestone at a Colorado chemical weapons depot by destroying nearly 300,000 decades-old artillery shells containing mustard agent.
The Army has destroyed about half of the 2,600 tons (about 2,360 metric tons) of mustard agent contained in decades-old shells stored at a southern Colorado chemical depot.
A highly automated, multibillion-dollar plant in Colorado that destroys U.S. chemical weapons is over budget, behind schedule and bedeviled by troubles that could worsen the danger to workers.
