| 237130 |
Communication tower construction |
| 237130 |
Construction management, power and communication transmission line |
| 237130 |
Electric light and power plant (except hydroelectric) construction |
| 237130 |
Electric power transmission line and tower construction |
| 237130 |
Electricity generating plant (except hydroelectric) construction |
| 237130 |
Fiber optic cable transmission line construction |
| 237130 |
Microwave relay tower construction |
| 237130 |
Nuclear power plant construction |
| 237130 |
Pole line construction |
| 237130 |
Power line stringing |