Ok Tedi Mine
E447105
Ok Tedi Mine is a large open-pit copper and gold mine in Papua New Guinea, widely known for its significant environmental impacts on the surrounding river systems and communities.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ok Tedi Mine canonical | 2 |
| Ok Tedi Mining Limited | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4494573 — 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: Ok Tedi Mine Context triple: [Fly River, associatedWith, Ok Tedi Mine]
-
A.
Kimberley Mine
Kimberley Mine is a famous South African open-pit diamond mine renowned as one of the earliest and largest diamond discoveries in the world.
-
B.
Mopani Copper Mines
Mopani Copper Mines is a major Zambian mining company focused on the extraction and processing of copper and cobalt.
-
C.
Argonaut Mine
Argonaut Mine is a historic hard-rock gold mine in California’s Mother Lode region, known for being one of the deepest and most productive gold mines in the state as well as the site of a major mining disaster in 1922.
-
D.
Wande Coal
Wande Coal is a Nigerian singer and songwriter known for his influential role in modern Afrobeats and his smooth, soulful vocal style.
-
E.
Los Pelambres mine
Los Pelambres mine is a large open-pit copper and molybdenum mining operation located in the Coquimbo Region of Chile and operated by Antofagasta plc.
- 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: Ok Tedi Mine Target entity description: Ok Tedi Mine is a large open-pit copper and gold mine in Papua New Guinea, widely known for its significant environmental impacts on the surrounding river systems and communities.
-
A.
Kimberley Mine
Kimberley Mine is a famous South African open-pit diamond mine renowned as one of the earliest and largest diamond discoveries in the world.
-
B.
Mopani Copper Mines
Mopani Copper Mines is a major Zambian mining company focused on the extraction and processing of copper and cobalt.
-
C.
Argonaut Mine
Argonaut Mine is a historic hard-rock gold mine in California’s Mother Lode region, known for being one of the deepest and most productive gold mines in the state as well as the site of a major mining disaster in 1922.
-
D.
Wande Coal
Wande Coal is a Nigerian singer and songwriter known for his influential role in modern Afrobeats and his smooth, soulful vocal style.
-
E.
Los Pelambres mine
Los Pelambres mine is a large open-pit copper and molybdenum mining operation located in the Coquimbo Region of Chile and operated by Antofagasta plc.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
copper mine
ⓘ
gold mine ⓘ open-pit mine ⓘ |
| affectsCommunity |
Western Province villages
ⓘ
downstream indigenous communities ⓘ |
| associatedCompanyAction |
BHP exit from Ok Tedi project
ⓘ
creation of PNG Sustainable Development Program ⓘ |
| commodityProduced |
copper
ⓘ
gold ⓘ silver ⓘ |
| country | Papua New Guinea ⓘ |
| discovered | 1968 ⓘ |
| economicRole |
major contributor to Papua New Guinea export earnings
ⓘ
major employer in Western Province ⓘ |
| environmentalImpact |
deforestation
ⓘ
floodplain damage ⓘ increased sedimentation in Fly River system ⓘ loss of biodiversity ⓘ river pollution ⓘ tailings discharge into Ok Tedi River ⓘ |
| hasOperator |
Ok Tedi Mining Limited
ⓘ
linked to:
Ok Tedi Mine
|
| hasWasteManagementIssue | tailings dam design abandoned after landslide ⓘ |
| hasWasteManagementPractice | riverine tailings disposal ⓘ |
| inMountainRange | Star Mountains ⓘ |
| legalCase | Ok Tedi environmental lawsuit against BHP ⓘ |
| legalOutcome | out-of-court settlement with affected landowners ⓘ |
| locatedIn | Western Province, Papua New Guinea ⓘ |
| locatedOnRiver | Ok Tedi River ⓘ |
| miningMethod | open-pit mining ⓘ |
| nearBorderWith | Indonesia ⓘ |
| nearSettlement | Tabubil ⓘ |
| notableFor |
long-term riverine tailings disposal
ⓘ
one of the world’s worst mining environmental disasters ⓘ |
| oreType | porphyry copper-gold deposit ⓘ |
| ownedBy |
Ok Tedi Mining Limited
ⓘ
linked to:
Ok Tedi Mine
|
| previousMajorOwner |
BHP Billiton
ⓘ
linked to:
BHP Group
Inmet Mining ⓘ Minerals Resources Development Company ⓘ |
| productForm |
copper concentrate
ⓘ
gold concentrate ⓘ silver concentrate ⓘ |
| regulatoryIssue | waivers of environmental standards by Papua New Guinea government ⓘ |
| startOfProduction | 1984 ⓘ |
| subjectOf |
academic research on mining and development in Papua New Guinea
ⓘ
environmental impact studies ⓘ international NGO campaigns ⓘ |
| transportRoute |
Fly River
ⓘ
Kiunga ⓘ |
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: Ok Tedi Mine Description of subject: Ok Tedi Mine is a large open-pit copper and gold mine in Papua New Guinea, widely known for its significant environmental impacts on the surrounding river systems and communities.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ok Tedi Mine
linked to: Ok Tedi Mine