| 237130 |
Transformer station and substation, electric power, construction |
| 237130 |
Transmission and distribution line construction |
| 237130 |
Underground cable (e.g., fiber optic, electricity, telephone, cable television) laying |
| 237130 |
Utility line (i.e., communication, electric power), construction |
| 237130 |
Wind power structure construction |
| 237210 |
Subdividing real estate |
| 237210 |
Building lot subdividing |
| 237210 |
Land (except cemeteries) subdividers |
| 237210 |
Land acquisition, assembling and subdividing |
| 237210 |
Land developers (i.e., subdividing and installing infrastructure) |