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Friday, September 23, 2011  Construction of the Pueblo Chemical Agent-Destruction Pilot Plant located on the Pueblo Chemical Depot is nearly 80 percent complete. The plant is designed to destroy chemical weapons filled with a mustard agent using a neutralization process.

Monday, June 20, 2011  A new commander is taking over the Army's Pueblo Chemical Depot where 2600 tons of mustard agent is awaiting destruction.

Friday, June 03, 2011  Some of the first steps towards removing a stockpile in Pueblo of ammunition containing mustard gas are underway.

Tuesday, May 17, 2011  The agency in charge of finding tenants for the Pueblo Chemical Depot wants Fort Carson to consider renting some space.

Wednesday, November 10, 2010  The manager overseeing destruction of chemical weapons in Colorado and Kentucky is taking a different job in the Army.

Monday, June 07, 2010  The Chemical Materials Agency announced the appointment of Col. John J. Megnia on Monday. The agency is based at Aberdeen Proving Ground, Md.

Tuesday, May 11, 2010  The state health department released details of the agreement this week. The deal settles a federal lawsuit filed by the state. It must still be approved by the judge.

Friday, April 30, 2010  The Colorado Department of Public Health and Environment says the two sides reached an agreement Monday in the lawsuit against the Army. It sought more frequent and sensitive tests on 2,600 tons of mustard agent at the Pueblo Chemical Depot.

Monday, April 26, 2010  Collected since the mid-1980s, the shipment includes waste from old chemical munitions sampling operations, spills and decontamination procedures associated with leaking mustard agent-filled munitions.

Friday, March 19, 2010  The two sides announced an agreement in January on the state's lawsuit seeking stepped-up monitoring of the 2,600 tons of mustard agent at the Pueblo Chemical Depot, and they were discussing how to implement the agreement.

Tuesday, March 16, 2010  State and Army officials say they've reached an impasse in negotiations on monitoring chemical weapons stored outside Pueblo.

Tuesday, January 12, 2010  The department sued the Army in August, seeking better monitoring after leaks from obsolete mustard projectiles. Department spokeswoman Jeanine Natterman says the two sides have arrived at a basic agreement and are now discussing how to implement it.

Monday, November 09, 2009  The leak was discovered in August by a sensor at one of the "igloos" containing the deadly toxin. The Army then sorted through the stored projectiles and found one leaking liquid mustard and one leaking mustard vapor.

Monday, August 24, 2009  The Army says the air inside the building is being filtered to clear out the agent. It says technicians in protective gear will enter the building later to look for leaks from the shells stored there.