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DOD Celebrates Destruction of Its Last Chemical Agents

On July 7, disposal experts destroyed the last remaining M55 rocket filled with deadly sarin nerve agent at a storage facility in Kentucky.  

With the disposal, the Defense Department completed the safe elimination of all declared chemical agents amassed between World War I and the late 1960s. The U.S. stockpile once consisted of about 30,600 tons of chemical warfare agents. 

A person wearing glasses stands at a lectern and speaks into a microphone as two seated people look on.
Deborah G. Rosenblum
Deborah G. Rosenblum, assistant secretary of defense for nuclear, chemical and biological defense programs, speaks at the Armed Forces Reserve Center in Richmond, Ky., Oct. 11, 2023. She addressed political leaders and workers from the state’s Blue Grass Army Depot where the last chemical agents were destroyed.
Photo By: Program Executive Office, Assembled Chemical Weapons Alternatives
VIRIN: 231011-O-D0439-002

Deborah G. Rosenblum, assistant secretary of defense for nuclear, chemical and biological defense programs, spoke today at the Armed Forces Reserve Center in Richmond, Kentucky, where she addressed political leaders and workers from the state's Blue Grass Army Depot, where the last chemical agents were destroyed. 

"With this milestone, the United States reinforces its commitment to achieving a world free of chemical weapons," Rosenblum said. 

The milestone ushered the U.S. into compliance with the Chemical Weapons Convention, a treaty prohibiting the production and use of chemical weapons and their destruction. The U.S. ratified the treaty in 1997, joining a coalition that now includes nearly 200 countries.   

Grass grows over concrete igloos in a field.
Blue Grass Army Depot
The chemical weapons at Blue Grass Army Depot, Ky., were received as far back as 1944. The majority of the nerve agent weapons arrived in the mid-1960s. All weapons are stored securely in earth-covered bunkers called igloos. Designed specifically to protect their contents from external factors -- such as storms, lightning and other weather-related events -- the igloos are equipped with a rear vent and a dual lightning protection system.
Photo By: Bethani Crouch, Army
VIRIN: 190410-A-ID654-576Y

In January 2020, the main plant at Blue Grass began operations using neutralization to destroy chemical agent in projectiles and rockets. The work also consisted of using an explosive destruction technology and a static detonation chamber to destroy projectiles filled with solidified mustard agent, she said. 

The Bechtel-Parsons Blue Grass team designed, built, tested and operated the facility, she said, noting that the DOD agency responsible for safe destruction — Program Executive Office, Assembled Chemical Weapons Alternatives — also had a role in the work. 

A person wearing protective equipment touches an artillery round suspended by a chain as another watches.
Careful Movement
Operators lift a 155 mm projectile containing VX nerve agent to place it in a tray for destruction at the Blue Grass Chemical Agent-Destruction Pilot Plant, Ky., May 5, 2021.
Photo By: James Campbell, DOD
VIRIN: 210505-O-YX835-224Y

"They've exemplified a one team, one mission mentality, from the workforce to the regulators, the stakeholders, the local leaders, community, federal, state and defense leaders. It's taken all of us to get across the line, and we've done it," she said. 

There's still more work to be done to close the Blue Grass plant safely, she added. 

The department will continue to support the chemical demilitarization program mission, she said.

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