Rocky Mountain Arsenal (former Army installation)

E942093

Superfund site former United States Army installation former chemical weapons manufacturing facility national wildlife refuge

Rocky Mountain Arsenal is a former U.S. Army chemical weapons manufacturing site near Denver that has been transformed into a national wildlife refuge.

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All labels observed (1)

Label	Occurrences
Rocky Mountain Arsenal (former Army installation) canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T11729622 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Rocky Mountain Arsenal (former Army installation)
Context triple: [United States Army installations in Colorado, hasInstallation, Rocky Mountain Arsenal (former Army installation)]

A. Dugway Proving Ground
Dugway Proving Ground is a large U.S. Army facility in Utah primarily used for testing chemical, biological, radiological, and defense systems in a remote desert environment.
B. Pine Bluff Arsenal
Pine Bluff Arsenal is a U.S. Army installation in Arkansas that historically served as a major site for the storage and destruction of chemical weapons and related munitions.
C. Picatinny Arsenal
Picatinny Arsenal is a U.S. Army research, development, and manufacturing facility in New Jersey specializing in advanced weaponry and munitions systems.
D. Tooele Army Depot
Tooele Army Depot is a U.S. Army installation in Utah historically known as a major storage and disposal site for the nation’s chemical weapons stockpile.
E. Edgewood Arsenal vicinity
Edgewood Arsenal vicinity is the area surrounding the Edgewood Area of Aberdeen Proving Ground in Harford County, Maryland, known for its military and research facilities.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Rocky Mountain Arsenal (former Army installation)
Target entity description: Rocky Mountain Arsenal is a former U.S. Army chemical weapons manufacturing site near Denver that has been transformed into a national wildlife refuge.

A. Dugway Proving Ground
Dugway Proving Ground is a large U.S. Army facility in Utah primarily used for testing chemical, biological, radiological, and defense systems in a remote desert environment.
B. Pine Bluff Arsenal
Pine Bluff Arsenal is a U.S. Army installation in Arkansas that historically served as a major site for the storage and destruction of chemical weapons and related munitions.
C. Picatinny Arsenal
Picatinny Arsenal is a U.S. Army research, development, and manufacturing facility in New Jersey specializing in advanced weaponry and munitions systems.
D. Tooele Army Depot
Tooele Army Depot is a U.S. Army installation in Utah historically known as a major storage and disposal site for the nation’s chemical weapons stockpile.
E. Edgewood Arsenal vicinity
Edgewood Arsenal vicinity is the area surrounding the Edgewood Area of Aberdeen Proving Ground in Harford County, Maryland, known for its military and research facilities.
F. None of above. chosen

Statements (52)

Predicate	Object
instanceOf	Superfund site ⓘ former United States Army installation ⓘ former chemical weapons manufacturing facility ⓘ national wildlife refuge ⓘ national wildlife refuge ⓘ
administeredBy	United States Army ⓘ
area	approximately 27 square miles ⓘ over 17,000 acres ⓘ
cleanupLedBy	U.S. Army ⓘ linked to: United States Army
cleanupMethod	containment ⓘ on-site treatment ⓘ soil excavation ⓘ
cleanupSupervisedBy	Colorado Department of Public Health and Environment ⓘ U.S. Environmental Protection Agency ⓘ linked to: United States Environmental Protection Agency
contaminatedWith	chemical warfare agents ⓘ industrial chemicals ⓘ pesticide residues ⓘ
conversionPurpose	public recreation ⓘ wildlife habitat restoration ⓘ
convertedTo	Rocky Mountain Arsenal National Wildlife Refuge ⓘ
country	United States of America ⓘ
created	1942 ⓘ
createdBy	United States Army ⓘ
createdDuring	World War II ⓘ
designatedAs	Rocky Mountain Arsenal National Wildlife Refuge ⓘ
laterAdministeredBy	U.S. Fish and Wildlife Service ⓘ
listedAs	National Priorities List site ⓘ linked to: National Priorities List U.S. Environmental Protection Agency Superfund site ⓘ linked to: U.S. EPA Superfund site
locatedIn	Adams County, Colorado ⓘ
locatedNear	Commerce City, Colorado ⓘ Denver, Colorado ⓘ
managedBy	U.S. Fish and Wildlife Service ⓘ
notableFor	transition from weapons plant to wildlife refuge ⓘ
offers	environmental education programs ⓘ hiking trails ⓘ wildlife viewing ⓘ
openToPublic	true ⓘ
partOf	Front Range Urban Corridor ⓘ
postCleanupUse	environmental education ⓘ outdoor recreation ⓘ wildlife conservation ⓘ
primaryFunction	chemical weapons production ⓘ
produced	herbicides ⓘ incendiary munitions ⓘ mustard gas ⓘ nerve agents ⓘ pesticides ⓘ
providesHabitatFor	bald eagles ⓘ bison ⓘ deer ⓘ migratory birds ⓘ raptors ⓘ

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

United States Army installations in Colorado → hasInstallation → Rocky Mountain Arsenal (former Army installation) ⓘ

All labels observed (1)

How this entity was disambiguated Show

Statements (52)

How these facts were elicited Show

Referenced by (1)

How this entity was disambiguated

How these facts were elicited