Permanente Metals Corporation
E806604
Permanente Metals Corporation was a major American shipbuilding company during World War II, known for mass-producing Liberty and Victory ships for the U.S. war effort.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Permanente Metals Corporation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9562873 — 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: Permanente Metals Corporation Context triple: [Victory ship, builtAt, Permanente Metals Corporation]
-
A.
Special Metals Corporation
Special Metals Corporation is a leading manufacturer of high-performance nickel-based alloys and superalloys used in demanding aerospace, power generation, and industrial applications.
-
B.
Bechtel Mining & Metals
Bechtel Mining & Metals is a business unit of Bechtel Corporation that provides engineering, procurement, construction, and project management services for mining and metals projects worldwide.
-
C.
Sherritt Ames
Sherritt Ames is a relatively obscure individual known primarily through limited references, with no widely documented public achievements or biographical details.
-
D.
Braden Copper Company
Braden Copper Company was an American mining company that played a major role in developing and operating large-scale copper mining operations in Chile in the early 20th century.
-
E.
Union Minerals and Alloys Corporation
Union Minerals and Alloys Corporation was a U.S. scrap and salvage company known for purchasing and dismantling decommissioned naval vessels and other large industrial assets.
- 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: Permanente Metals Corporation Target entity description: Permanente Metals Corporation was a major American shipbuilding company during World War II, known for mass-producing Liberty and Victory ships for the U.S. war effort.
-
A.
Special Metals Corporation
Special Metals Corporation is a leading manufacturer of high-performance nickel-based alloys and superalloys used in demanding aerospace, power generation, and industrial applications.
-
B.
Bechtel Mining & Metals
Bechtel Mining & Metals is a business unit of Bechtel Corporation that provides engineering, procurement, construction, and project management services for mining and metals projects worldwide.
-
C.
Sherritt Ames
Sherritt Ames is a relatively obscure individual known primarily through limited references, with no widely documented public achievements or biographical details.
-
D.
Braden Copper Company
Braden Copper Company was an American mining company that played a major role in developing and operating large-scale copper mining operations in Chile in the early 20th century.
-
E.
Union Minerals and Alloys Corporation
Union Minerals and Alloys Corporation was a U.S. scrap and salvage company known for purchasing and dismantling decommissioned naval vessels and other large industrial assets.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
American company
ⓘ
shipbuilding company ⓘ |
| activeDuring | World War II ⓘ |
| associatedWith |
Kaiser Permanente (through common Kaiser origins)
NERFINISHED
ⓘ
Kaiser Shipyards NERFINISHED ⓘ |
| category | World War II shipbuilding companies of the United States ⓘ |
| contributedTo | rapid expansion of U.S. merchant fleet in World War II ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| foundedBy | Henry J. Kaiser NERFINISHED ⓘ |
| headquartersLocation |
California, United States
ⓘ
surface form:
California
|
| historicalPeriod | 1940s ⓘ |
| industry |
metals
ⓘ
shipbuilding ⓘ |
| locationCountry |
United States of America
ⓘ
surface form:
United States
|
| notableFor |
mass production of Liberty ships
ⓘ
mass production of Victory ships ⓘ |
| operatedShipyardsIn |
Richmond, California
NERFINISHED
ⓘ
Swan Island, Portland, Oregon NERFINISHED ⓘ Vancouver, Washington NERFINISHED ⓘ |
| parentCompany | Kaiser Company, Inc. NERFINISHED ⓘ |
| partOf | Kaiser industrial enterprises NERFINISHED ⓘ |
| product |
Liberty ships
NERFINISHED
ⓘ
Victory ships NERFINISHED ⓘ |
| roleInConflict | supporting U.S. war effort through shipbuilding ⓘ |
| serviceTo |
United States Maritime Commission
NERFINISHED
ⓘ
United States Navy NERFINISHED ⓘ United States government NERFINISHED ⓘ |
| specializedIn | welded steel ship construction ⓘ |
| status | defunct ⓘ |
| usedProductionMethod | assembly-line shipbuilding ⓘ |
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: Permanente Metals Corporation Description of subject: Permanente Metals Corporation was a major American shipbuilding company during World War II, known for mass-producing Liberty and Victory ships for the U.S. war effort.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Victory ship