Trail smelter
E1027801
The Trail smelter is a large, historically significant lead and zinc smelting facility in Trail, British Columbia, known for its role in a landmark international environmental law case.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Trail smelter canonical | 3 |
| Trail Smelter arbitration | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T13219474 — 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: Trail smelter Context triple: [Warfield, British Columbia, locatedNear, Trail smelter]
-
A.
KeeTac Mine
KeeTac Mine is a large taconite iron ore mining and processing operation located on Minnesota’s Mesabi Iron Range.
-
B.
Firecreek
Firecreek is a 1968 American Western film best known for its tense small-town confrontation and for starring James Stewart and Henry Fonda.
-
C.
Bullfrog Mine
Bullfrog Mine was a prominent early 20th-century gold mine in Nevada that gave its name to the surrounding Bullfrog mining district and helped spur the regional mining boom.
-
D.
Red Devil Mine
Red Devil Mine is an abandoned mercury mining site in southwestern Alaska known for its historical production and ongoing environmental contamination concerns.
-
E.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
- 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: Trail smelter Target entity description: The Trail smelter is a large, historically significant lead and zinc smelting facility in Trail, British Columbia, known for its role in a landmark international environmental law case.
-
A.
KeeTac Mine
KeeTac Mine is a large taconite iron ore mining and processing operation located on Minnesota’s Mesabi Iron Range.
-
B.
Firecreek
Firecreek is a 1968 American Western film best known for its tense small-town confrontation and for starring James Stewart and Henry Fonda.
-
C.
Bullfrog Mine
Bullfrog Mine was a prominent early 20th-century gold mine in Nevada that gave its name to the surrounding Bullfrog mining district and helped spur the regional mining boom.
-
D.
Red Devil Mine
Red Devil Mine is an abandoned mercury mining site in southwestern Alaska known for its historical production and ongoing environmental contamination concerns.
-
E.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
industrial facility
ⓘ
lead smelter ⓘ non-ferrous metal smelter ⓘ smelter ⓘ zinc smelter ⓘ |
| adjacentTo | Columbia River ⓘ |
| constructionStart | 1890s ⓘ |
| country | Canada ⓘ |
| economicRole | major employer in Trail, British Columbia ⓘ |
| employed | thousands of workers ⓘ |
| environmentalImpact |
damage to crops in Washington State
ⓘ
forest damage in Washington State ⓘ |
| expandedIn | 1920s ⓘ |
| hasProcess |
electrolytic zinc production
ⓘ
roasting of ores ⓘ smelting of lead concentrates ⓘ |
| heritageStatus | historically significant industrial site ⓘ |
| implemented | pollution control measures ⓘ |
| inception | 1896 ⓘ |
| industry |
metallurgy
ⓘ
mining ⓘ |
| knownFor |
air pollution affecting Washington State
ⓘ
historic cross-border pollution dispute ⓘ sulfur dioxide emissions ⓘ |
| locatedIn |
British Columbia
ⓘ
Canada ⓘ Trail, British Columbia ⓘ |
| near | Canada–United States border ⓘ |
| operator |
Cominco
ⓘ
Teck Resources Limited ⓘ
linked to:
Cominco
|
| ownedBy |
Teck Resources Limited
ⓘ
linked to:
Cominco
|
| partOf | Teck Trail Operations ⓘ |
| produces |
fertilizer
ⓘ
germanium ⓘ gold ⓘ indium ⓘ lead ⓘ silver ⓘ sulfuric acid ⓘ zinc ⓘ |
| relatedCase |
Trail Smelter arbitration
ⓘ
linked to:
Trail smelter
|
| relatedPrinciple |
no-harm rule in international law
ⓘ
state responsibility for transboundary harm ⓘ |
| significantFor |
Trail Smelter arbitration
ⓘ
linked to:
Trail smelter
international environmental law ⓘ transboundary pollution ⓘ |
| subjectOf |
United States–Canada arbitration
ⓘ
international tribunal decision 1941 ⓘ |
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: Trail smelter Description of subject: The Trail smelter is a large, historically significant lead and zinc smelting facility in Trail, British Columbia, known for its role in a landmark international environmental law case.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Trail smelter
linked to: Trail smelter