| 237130 |
Performing electrical work within buildings--are classified in Industry 238210, Electrical Contractors and Other Wiring Installation Contractors |
| 237130 |
Line slashing or cutting (except maintenance)--are classified in Industry 238910, Site Preparation Contractors |
| 237130 |
Installing and maintaining communication transmission lines and towers performed by telecommunications companies--are classified in Subsector 517, Telecommunications |
| 237130 |
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 |
| 237130 |
Locating underground utility lines prior to digging--are classified in Industry 561990, All Other Support Services |
| 237130 |
Tree and brush trimming for overhead utility lines--are classified in Industry 561730, Landscaping Services. |
| 237210 |
Constructing buildings, for sale, on lots they subdivide--are classified based on the primary type of construction project, in Industry Group 2361, Residential Building Construction, or Industry Group 2362, Nonresidential Building Construction |
| 237210 |
Installing roads on a subcontract basis for land subdividers--are classified in Industry 237310, Highway, Street, and Bridge Construction |
| 237210 |
Installing utilities (i.e., water, sewer, petroleum, gas, power, and communication) on a subcontract basis for land subdividers--are classified in Industry Group 2371, Utility System Construction |
| 237210 |
Preparing land owned by others for building construction--are classified in Industry 238910, Site Preparation Contractors |