| 237990 |
Constructing oil and gas pipelines and related structures--are classified in Industry 237120, Oil and Gas Pipeline and Related Structures Construction |
| 237990 |
Constructing power and communication transmission lines and related structures--are classified in Industry 237130, Power and Communication Line and Related Structures Construction |
| 237990 |
Installing and maintaining electric power lines and towers performed by electric utility companies--are classified in Industry Group 2211, Electric Power Generation, Transmission and Distribution |
| 237990 |
Installing and maintaining communication transmission lines and towers performed by telecommunications companies--are classified in Subsector 517, Telecommunications |
| 237990 |
Constructing highways, streets, and bridges--are classified in Industry 237310, Highway, Street, and Bridge Construction |
| 237990 |
Trenching (except underwater) or removing dams, dikes, and other heavy and civil engineering constructions--are classified in Industry 238910, Site Preparation Contractors |
| 237990 |
Inspecting pipelines (i.e., visual)--are classified in Industry 541990, All Other Professional, Scientific, and Technical Services. |
| 238110 |
Constructing or paving streets, highways, and public sidewalks--are classified in Industry 237310, Highway, Street, and Bridge Construction |
| 238110 |
Concrete sealing, coating, waterproofing, or dampproofing--are classified in Industry 238390, Other Building Finishing Contractors |
| 238110 |
Paving residential driveways, commercial parking lots, and other private parking areas--are classified in Industry 238990, All Other Specialty Trade Contractors |