| Business | Phone |
| Gulf South Pipeline Co 606 S Shelby St, Carthage 75633 | (903) 693-5172 |
| P G & E Gas Transmission Texas Highway 79 E, Carthage 75633 | (903) 693-4585 |
| Texas Eastern Prods Pipeline 1556 Us Highway 79 N, Carthage 75633 | (903) 693-6342 |
| Midcoast Energy Resources Highway 79 E, Carthage 75633 | (903) 693-3109 |