Calumet & Hecla Mining Company office building
E949314
The Calumet & Hecla Mining Company office building is a historic administrative structure that served as the headquarters for one of Michigan’s most important copper mining companies in the late 19th and early 20th centuries.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Calumet & Hecla Mining Company office building canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11845657 — 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 Mining Company office building Context triple: [Calumet Historic District, contains, Calumet & Hecla Mining Company office building]
-
A.
Hearst Memorial Mining Building
The Hearst Memorial Mining Building is a historic Beaux-Arts academic structure at the University of California, Berkeley, renowned for its architectural significance and role in engineering education.
-
B.
Michigan Consolidated Gas Company Building
The Michigan Consolidated Gas Company Building is a modernist high-rise office tower in Detroit, Michigan, designed by architect Minoru Yamasaki and noted for its elegant, minimalist façade.
-
C.
McClurg Building
The McClurg Building is a historic Chicago commercial structure recognized as a significant example of early skyscraper design by the architectural firm Holabird & Roche.
-
D.
Marquette Building
The Marquette Building is a landmark early Chicago School skyscraper in downtown Chicago, celebrated for its steel-frame construction and richly ornamented terra-cotta and mosaic detailing.
-
E.
Howard Building
Howard Building is an academic facility on Sheffield Hallam University’s city campus, housing teaching spaces and university departments.
- 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 Mining Company office building Target entity description: The Calumet & Hecla Mining Company office building is a historic administrative structure that served as the headquarters for one of Michigan’s most important copper mining companies in the late 19th and early 20th centuries.
-
A.
Hearst Memorial Mining Building
The Hearst Memorial Mining Building is a historic Beaux-Arts academic structure at the University of California, Berkeley, renowned for its architectural significance and role in engineering education.
-
B.
Michigan Consolidated Gas Company Building
The Michigan Consolidated Gas Company Building is a modernist high-rise office tower in Detroit, Michigan, designed by architect Minoru Yamasaki and noted for its elegant, minimalist façade.
-
C.
McClurg Building
The McClurg Building is a historic Chicago commercial structure recognized as a significant example of early skyscraper design by the architectural firm Holabird & Roche.
-
D.
Marquette Building
The Marquette Building is a landmark early Chicago School skyscraper in downtown Chicago, celebrated for its steel-frame construction and richly ornamented terra-cotta and mosaic detailing.
-
E.
Howard Building
Howard Building is an academic facility on Sheffield Hallam University’s city campus, housing teaching spaces and university departments.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
administrative building
ⓘ
historic building ⓘ office building ⓘ |
| architecturalStyle |
Neo-Romanesque
ⓘ
surface form:
Romanesque Revival
|
| associatedWithCompany | Calumet & Hecla Mining Company NERFINISHED ⓘ |
| associatedWithIndustry | copper mining ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| eraOfGreatestUse |
early 20th century
ⓘ
late 19th century ⓘ |
| hasFeature |
arched entrance
ⓘ
multiple stories ⓘ stone trim ⓘ |
| heritageDesignation | National Historic Landmark District contributing property ⓘ |
| locatedIn |
Calumet, Michigan
NERFINISHED
ⓘ
Houghton County, Michigan NERFINISHED ⓘ Michigan NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInMiningRegion | Keweenaw Peninsula NERFINISHED ⓘ |
| materialUsed | red sandstone ⓘ |
| occupant | Calumet & Hecla Mining Company NERFINISHED ⓘ |
| partOf | Calumet Historic District NERFINISHED ⓘ |
| roofMaterial | slate ⓘ |
| significance | headquarters of a major Michigan copper mining company ⓘ |
| usedAs |
administrative offices
ⓘ
company headquarters ⓘ |
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 Mining Company office building Description of subject: The Calumet & Hecla Mining Company office building is a historic administrative structure that served as the headquarters for one of Michigan’s most important copper mining companies in the late 19th and early 20th centuries.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.