| Business | Phone |
| Bebee Engineering Inc 610 S Main St # 208, Tulsa 74119 | (918) 587-9544 |
| Geurin Engineering Inc 220 E 8th St, Tulsa 74119 | (918) 584-0347 |
| Herndon Engineering Inc 5530 S 79th East Pl # 2, Tulsa 74145 | (918) 627-0714 |
| Wallace Engineering 201 W 5th St # 200, Tulsa 74103 | (918) 584-5858 |
| Stress Con Inc 6533 E 11th St, Tulsa 74112 | (918) 836-0021 |
| Snowden Engineering Inc 8128 E 63rd St # A, Tulsa 74133 | (918) 252-4557 |
| J R Robertson Jr Pe 5341 E 29th St, Tulsa 74114 | (918) 691-4071 |