Calumet & Hecla Mine
E925214
Calumet & Hecla Mine was one of the most productive and historically significant copper mines in the United States, central to the industrial development of Michigan’s Keweenaw Peninsula in the late 19th and early 20th centuries.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Calumet & Hecla Mine canonical | 3 |
| Calumet Mine | 1 |
| Hecla Mine (Michigan) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11403645 — 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: Calumet & Hecla Mine Context triple: [Keweenaw Peninsula, hasHistoricMine, Calumet & Hecla Mine]
-
A.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
-
B.
North Star Mine
North Star Mine is a historic gold mine and landmark in Grass Valley, California, that played a significant role in the region’s 19th- and early 20th-century mining industry.
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C.
Hollinger Mine
Hollinger Mine was one of the largest and most productive gold mines in Canada, central to the development of Timmins, Ontario and the Porcupine mining district.
-
D.
Andoom Mine
Andoom Mine is a major bauxite mining operation near Weipa in Queensland, Australia, contributing significantly to the region’s aluminum ore production.
-
E.
El Teniente mine
El Teniente mine is one of the world’s largest underground copper mines, located in central Chile and operated by the state-owned company Codelco.
- 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: Calumet & Hecla Mine Target entity description: Calumet & Hecla Mine was one of the most productive and historically significant copper mines in the United States, central to the industrial development of Michigan’s Keweenaw Peninsula in the late 19th and early 20th centuries.
-
A.
Tioga Mine
Tioga Mine was a historic silver mining operation in the Sierra Nevada of California that gave its name to nearby Tioga Pass.
-
B.
North Star Mine
North Star Mine is a historic gold mine and landmark in Grass Valley, California, that played a significant role in the region’s 19th- and early 20th-century mining industry.
-
C.
Hollinger Mine
Hollinger Mine was one of the largest and most productive gold mines in Canada, central to the development of Timmins, Ontario and the Porcupine mining district.
-
D.
Andoom Mine
Andoom Mine is a major bauxite mining operation near Weipa in Queensland, Australia, contributing significantly to the region’s aluminum ore production.
-
E.
El Teniente mine
El Teniente mine is one of the world’s largest underground copper mines, located in central Chile and operated by the state-owned company Codelco.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
copper mine
ⓘ
industrial heritage site ⓘ |
| associatedWith |
Calumet and Hecla Mining Company strike of 1913–1914
ⓘ
Italian Hall disaster ⓘ |
| category |
Copper mines in Michigan
ⓘ
Historic sites in Houghton County, Michigan ⓘ Industrial history of the United States ⓘ |
| continent | North America ⓘ |
| contributedTo |
economic development of Michigan
ⓘ
industrial development of the Keweenaw Peninsula ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| economicSector | extractive industry ⓘ |
| geologicalSetting | Midcontinent Rift System ⓘ |
| hasHeritageValue | industrial archaeology site ⓘ |
| hasPart |
rock houses
ⓘ
shaft houses ⓘ smelting and processing facilities ⓘ underground mine workings ⓘ |
| heritageDesignation | National Historical Park component ⓘ |
| historicalImportance |
key site in the history of American hard‑rock mining
ⓘ
one of the most productive copper mines in the United States ⓘ |
| historicalRole |
center of labor and mining history in Michigan
ⓘ
major employer in Calumet area ⓘ |
| impact |
shaped social and cultural history of Calumet
ⓘ
stimulated immigration to Michigan’s Keweenaw Peninsula ⓘ |
| industry | mining industry ⓘ |
| knownFor |
high copper production
ⓘ
historical significance in U.S. copper mining ⓘ |
| languageOfName | English ⓘ |
| locatedIn |
Calumet, Michigan
ⓘ
Keweenaw Peninsula ⓘ |
| locatedInAdministrativeEntity |
Houghton County, Michigan
NERFINISHED
ⓘ
State of Michigan ⓘ
linked to:
Michigan
|
| locatedNear | Lake Superior ⓘ |
| mineralRegion |
Keweenaw copper range
ⓘ
linked to:
Copper Range
|
| namedAfter |
Calumet and Hecla Mining Company
ⓘ
linked to:
Calumet & Hecla Mining Company
|
| operatedBy |
Calumet and Hecla Mining Company
ⓘ
linked to:
Calumet & Hecla Mining Company
|
| partOf |
Copper Country National Historical Park
ⓘ
linked to:
Keweenaw National Historical Park
Keweenaw copper district ⓘ
linked to:
Keweenaw copper mining district
|
| product | copper ⓘ |
| region |
Copper Country, Michigan
ⓘ
linked to:
Copper Country region of Michigan
|
| resourceType | native copper deposit ⓘ |
| significantPeriod |
early 20th century
ⓘ
late 19th century ⓘ |
| tourism | visited as part of heritage tourism in Copper Country ⓘ |
| transportInfrastructure | served by mineral rail lines ⓘ |
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: Calumet & Hecla Mine Description of subject: Calumet & Hecla Mine was one of the most productive and historically significant copper mines in the United States, central to the industrial development of Michigan’s Keweenaw Peninsula in the late 19th and early 20th centuries.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Calumet & Hecla Mine
linked to: Calumet & Hecla Mine