| Business | Phone |
| Douglas King 3319 Winthrop Ave, Fort Worth 76116 | (817) 738-2921 |
| T Clinton Mullins 420 Throckmorton St 630, Fort Worth 76102 | (817) 332-6717 |
| Ralph H Cummins Co 500 W 7th St 1213, Fort Worth 76102 | (817) 877-4111 |
| Geological Site Assesments 305 Bodart Ln, Fort Worth 76108 | (817) 246-5477 |