| Business | Phone |
| Geostrat Inc 9330 Amberton Pkwy, Dallas 75243 | (214) 654-0555 |
| George C Pendleton Jr 717 N Harwood St, Dallas 75201 | (214) 220-1002 |
| Eastern Energy Corp Dallas 75231 | (214) 691-1720 |
| Emerald Energy 4925 Greenville Ave, Dallas 75206 | (214) 691-2399 |
| Rod G Enspanier 6116 N Central Expy, Dallas 75206 | (214) 373-3865 |
| Royal Exploration Inc 10610 Metric Dr, Dallas 75243 | (214) 343-2930 |
| Wayne H Gifford 4625 Greenville Ave 202, Dallas 75206 | (214) 691-1935 |
| Starkey A Wilson 2121 San Jacinto St, Dallas 75201 | (214) 880-0050 |
| Tom J King 4925 Greenville Ave 718, Dallas 75206 | (214) 691-0015 |
| Lampert Expertion Corp 5646 Milton St 413, Dallas 75206 | (214) 369-6463 |
| Leonard Bryans Petroleum 4925 Greenville Ave 750, Dallas 75206 | (214) 369-0581 |
| Bradley S Ray 4925 Greenville Ave, Dallas 75206 | (214) 696-6509 |
| Sinagua Resources 4925 Greenville Ave 720, Dallas 75206 | (214) 691-0903 |
| Stremkal Inc 6116 N Central Expy 404, Dallas 75206 | (214) 369-9952 |
| Tom Mairs Pc 5646 Milton St 736, Dallas 75206 | (214) 265-9533 |
| Michael A Wiley 12879 Josey Ln, Dallas 75234 | (972) 406-0094 |
| Sistrunk Corp 7230 Briar Cove Dr, Dallas 75254 | (214) 363-1562 |
| John L Allen 6808 Avalon Ave, Dallas 75214 | (214) 327-7909 |