Weldon Spring Ordnance Works
E100258
Weldon Spring Ordnance Works was a major World War II-era munitions and later uranium-processing facility in Missouri that became part of the Manhattan Project and is now known for its extensive environmental cleanup.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Weldon Spring Ordnance Works canonical | 1 |
| Weldon Spring Site Remedial Action Project area | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T847314 — 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: Weldon Spring Ordnance Works Context triple: [Manhattan Project sites, hasPart, Weldon Spring Ordnance Works]
-
A.
Watertown Arsenal
Watertown Arsenal is a historic former U.S. Army ordnance and research facility in Watertown, Massachusetts, that played a key role in American military manufacturing and technology development.
-
B.
Redstone Arsenal, Alabama
Redstone Arsenal, Alabama is a major U.S. Army installation and technology hub known for its central role in missile, space, and defense research and development.
-
C.
Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
-
D.
Paducah Gaseous Diffusion Plant
The Paducah Gaseous Diffusion Plant is a former U.S. Department of Energy uranium enrichment facility in western Kentucky that played a major role in producing enriched uranium for nuclear power and defense.
-
E.
Springfield Armory National Historic Site
Springfield Armory National Historic Site is a preserved historic weapons manufacturing complex in Springfield, Massachusetts, that served as a primary U.S. armory and center of military innovation for nearly two centuries.
- 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: Weldon Spring Ordnance Works Target entity description: Weldon Spring Ordnance Works was a major World War II-era munitions and later uranium-processing facility in Missouri that became part of the Manhattan Project and is now known for its extensive environmental cleanup.
-
A.
Watertown Arsenal
Watertown Arsenal is a historic former U.S. Army ordnance and research facility in Watertown, Massachusetts, that played a key role in American military manufacturing and technology development.
-
B.
Redstone Arsenal, Alabama
Redstone Arsenal, Alabama is a major U.S. Army installation and technology hub known for its central role in missile, space, and defense research and development.
-
C.
Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
-
D.
Paducah Gaseous Diffusion Plant
The Paducah Gaseous Diffusion Plant is a former U.S. Department of Energy uranium enrichment facility in western Kentucky that played a major role in producing enriched uranium for nuclear power and defense.
-
E.
Springfield Armory National Historic Site
Springfield Armory National Historic Site is a preserved historic weapons manufacturing complex in Springfield, Massachusetts, that served as a primary U.S. armory and center of military innovation for nearly two centuries.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
United States military installation
ⓘ
munitions plant ⓘ ordnance works ⓘ uranium processing facility ⓘ |
| associatedWith |
U.S. Army munitions production
ⓘ
United States nuclear weapons complex ⓘ
surface form:
U.S. nuclear weapons complex
|
| cleanupInvolves |
long-term groundwater monitoring
ⓘ
on-site disposal cell ⓘ remediation of chemical contaminants ⓘ remediation of radioactive materials ⓘ |
| cleanupManagedBy | U.S. Department of Energy ⓘ |
| constructedFor | World War II munitions production ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| environmentalIssue |
chemical waste
ⓘ
groundwater contamination ⓘ radioactive waste ⓘ soil contamination ⓘ |
| era |
Cold War
ⓘ
World War II ⓘ |
| hasReuse |
interpretive center
ⓘ
public viewing platform on disposal cell ⓘ |
| hazardType |
chemical hazard
ⓘ
radiological hazard ⓘ |
| historicalUse |
military explosives manufacturing
ⓘ
uranium feed materials processing plant ⓘ |
| knownFor |
Superfund cleanup site
ⓘ
large-scale environmental cleanup ⓘ radioactive waste disposal cell ⓘ |
| laterOperator |
U.S. Department of Energy
ⓘ
United States Atomic Energy Commission ⓘ |
| locatedIn |
Missouri
ⓘ
St. Charles County, Missouri ⓘ |
| locatedNear |
Missouri River
ⓘ
St. Louis, Missouri, United States ⓘ
surface form:
St. Louis, Missouri
Weldon Spring, Missouri ⓘ |
| locatedWithin |
Weldon Spring Ordnance Works
self-linksurface differs
ⓘ
surface form:
Weldon Spring Site Remedial Action Project area
|
| nearbyProtectedArea |
August A. Busch Memorial Conservation Area
ⓘ
Weldon Spring Conservation Area ⓘ |
| operator | United States Army ⓘ |
| partOf |
Manhattan Project
ⓘ
United States Ordnance Department ⓘ
surface form:
United States Army Ordnance Department
|
| regulatoryStatus | U.S. EPA Superfund site ⓘ |
| usedFor |
DNT production
ⓘ
TNT production ⓘ explosives manufacturing ⓘ nuclear weapons materials production ⓘ uranium ore processing ⓘ yellowcake production ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Weldon Spring Ordnance Works Description of subject: Weldon Spring Ordnance Works was a major World War II-era munitions and later uranium-processing facility in Missouri that became part of the Manhattan Project and is now known for its extensive environmental cleanup.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Weldon Spring Ordnance Works
→
locatedWithin
→
Weldon Spring Ordnance Works
self-linksurface differs
ⓘ
this entity surface form:
Weldon Spring Site Remedial Action Project area