| Naics index | Naics index description |
|---|---|
| 115310 | Reforestation (except forest nurseries) |
| 115310 | Timber valuation |
| 211120 | Crude petroleum from oil sand |
| 211120 | Crude petroleum from oil shale |
| 211120 | Crude petroleum lease condensate production |
| 211120 | Crude petroleum production |
| 211120 | Kerogen processing |
| 211120 | Offshore crude petroleum production |
| 211120 | Oil field development for own account |
| 211120 | Oil field exploration for own account |