| 237120 |
Pipeline, gas and oil, construction |
| 237120 |
Pumping station, gas and oil transmission, construction |
| 237120 |
Refinery, petroleum, construction |
| 237120 |
Service line, gas and oil, construction |
| 237120 |
Storage tank, natural gas or oil, tank farm or field, construction |
| 237130 |
Alternative energy (e.g., geothermal, ocean wave, solar, wind) structure construction |
| 237130 |
Cable laying (e.g., fiber optic, electricity, marine, telephone, cable television), including underground |
| 237130 |
Cellular phone tower construction |
| 237130 |
Co-generation plant construction |
| 237130 |
Communication antenna construction |