ABB Group
Sweden, Switzerland; engineering; construction; energy; power

Alliance Engineering Incorporated
USA, engineering and project services

AMEC plc
UK, engineering, construction, pipelines, marine

Apex Engineering, Inc.
USA, full-service engineering firm

Arby Construction, Inc.
USA, Pipeline Construction, Gas Distribution, Compressor Stations, Directional Drilling, Electric, Underground Steam, Fiber Optic, Water, Telecommunication, or Manhole and Vault Construction

Attila Dogan
Turkey, Engineering, Procurement, Construction

Baker Energy
USA, engineering, construction, and operations and technical services

BCCK Engineering Inc.
USA; nitrogen rejection, NGL recovery, and small to mid-sized refineries

Bechtel Group
USA; engineering; construction