| 40.. | Railroad Transportation |
| 41.. | Local And Interurban Passenger Transit |
| 42.. | Trucking And Warehousing |
| 43.. | U.S. Postal Service |
| 44.. | Water Transportation |
| 45.. | Transportation By Air |
| 46.. | Pipelines, Except Natural Gas |
| 47.. | Transportation Services |
| 48.. | Communication |
| 49.. | Electric, Gas, And Sanitary Services |