CH2M Hill
E449327
CH2M Hill was a global engineering and construction firm known for its large-scale infrastructure, environmental, and transportation projects.
All labels observed (3)
| Label | Occurrences |
|---|---|
| CH2M Hill canonical | 3 |
| CH2M | 1 |
| CH2M HILL Companies, Ltd. | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4529084 — 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: CH2M Hill Context triple: [Tilikum Crossing, designer, CH2M Hill]
-
A.
AECOM
AECOM is a global infrastructure consulting firm that provides architecture, engineering, construction management, and related professional services for large-scale public and private projects.
-
B.
Black & Veatch
Black & Veatch is a global engineering, consulting, and construction company specializing in infrastructure development in sectors such as energy, water, and telecommunications.
-
C.
Bechtel Corporation
Bechtel Corporation is a major American engineering, construction, and project management company known for large-scale infrastructure and energy projects worldwide.
-
D.
Parsons Brinckerhoff
Parsons Brinckerhoff is a global engineering and professional services firm known for its major infrastructure and transportation projects.
-
E.
Jacobs Engineering Group
Jacobs Engineering Group is a global professional services firm specializing in engineering, design, and construction management across infrastructure, aerospace, environmental, and industrial sectors.
- 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: CH2M Hill Target entity description: CH2M Hill was a global engineering and construction firm known for its large-scale infrastructure, environmental, and transportation projects.
-
A.
AECOM
AECOM is a global infrastructure consulting firm that provides architecture, engineering, construction management, and related professional services for large-scale public and private projects.
-
B.
Black & Veatch
Black & Veatch is a global engineering, consulting, and construction company specializing in infrastructure development in sectors such as energy, water, and telecommunications.
-
C.
Bechtel Corporation
Bechtel Corporation is a major American engineering, construction, and project management company known for large-scale infrastructure and energy projects worldwide.
-
D.
Parsons Brinckerhoff
Parsons Brinckerhoff is a global engineering and professional services firm known for its major infrastructure and transportation projects.
-
E.
Jacobs Engineering Group
Jacobs Engineering Group is a global professional services firm specializing in engineering, design, and construction management across infrastructure, aerospace, environmental, and industrial sectors.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
engineering and construction company
ⓘ
multinational company ⓘ |
| acquiredBy | Jacobs Engineering Group ⓘ |
| acquisitionDate | 2017 ⓘ |
| areaServed | worldwide ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| dissolved | 2017 ⓘ |
| formerHeadquartersLocation | Corvallis, Oregon ⓘ |
| foundedBy |
Burke Hayes
ⓘ
Cornell Howland ⓘ Holly Cornell ⓘ James Howland ⓘ Thomas Burke Hayes ⓘ |
| hasFormerName |
CH2M
ⓘ
linked to:
CH2M Hill
CH2M HILL Companies, Ltd. ⓘ
linked to:
CH2M Hill
|
| headquartersLocation |
Denver metropolitan area
ⓘ
linked to:
Denver–Aurora–Lakewood metropolitan area
Englewood, Colorado ⓘ |
| inception | 1946 ⓘ |
| industry |
construction
ⓘ
engineering ⓘ environmental services ⓘ infrastructure development ⓘ project management ⓘ transportation infrastructure ⓘ |
| legalForm | private company ⓘ |
| notableProject |
Hanford Site environmental remediation support
ⓘ
London 2012 Olympic and Paralympic Games infrastructure program management ⓘ Panama Canal expansion program management ⓘ Rocky Flats environmental cleanup ⓘ Singapore Deep Tunnel Sewerage System consulting ⓘ US highway and transportation projects ⓘ |
| numberOfEmployees | over 20000 ⓘ |
| organizationalStructure | employee-owned company ⓘ |
| recognizedFor |
environmental stewardship and sustainability consulting
ⓘ
program management of complex megaprojects ⓘ |
| service |
construction management
ⓘ
engineering design ⓘ environmental consulting ⓘ industrial and energy facilities design ⓘ operations and maintenance ⓘ program management ⓘ transportation planning and design ⓘ water and wastewater solutions ⓘ |
| specializedIn |
environmental remediation projects
ⓘ
large-scale infrastructure projects ⓘ transportation projects ⓘ water and wastewater infrastructure ⓘ |
| successor | Jacobs ⓘ |
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: CH2M Hill Description of subject: CH2M Hill was a global engineering and construction firm known for its large-scale infrastructure, environmental, and transportation projects.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.