| 213112 |
Preparation of oil and gas field drilling sites (except site preparation and related construction contractor activities) on a contract basis |
| 213112 |
Pulling oil and gas field casings, tubes, or rods on a contract basis |
| 213112 |
Pumping oil and gas wells on a contract basis |
| 213112 |
Rathole and mousehole drilling at oil and gas fields on a contract basis |
| 213112 |
Rig skidding, oil and gas field, on a contract basis |
| 213112 |
Roustabout mining services, on a contract basis |
| 213112 |
Salt water disposal systems, oil and gas field, on a contract basis |
| 213112 |
Sandblasting pipelines on lease, oil and gas field, on a contract basis |
| 213112 |
Seismograph exploration (except surveying) for oil and gas on a contract basis |
| 213112 |
Servicing oil and gas wells on a contract basis |