| Business | Phone |
| Accurate Laboratory Supplies 6558 E 40th St, Tulsa 74145 | (918) 663-5400 |
| Encon Testing Lab 1216 N Lansing Ave, Tulsa 74106 | (918) 599-7989 |
| Four M Weld Testing 4702 N Mingo Rd, Tulsa 74117 | (918) 834-0400 |
| Irisndt Inc 1115 W 41st St, Tulsa 74107 | (918) 446-8773 |
| Mineralogy Inc 3228 E 15th St, Tulsa 74104 | (918) 744-8284 |
| Tulsa Weld Testing-Inspection 2543 E 11th St, Tulsa 74104 | (918) 587-4717 |
| Sun Materials Testing 8500 S 89th West Ave, Tulsa 74131 | (918) 227-2188 |
| Sherry Laboratories Envrnmntl 6825 E 38th St, Tulsa 74145 | (918) 664-7768 |
| Refractory Testing & Inspect 10604 E Ute St, Tulsa 74116 | (918) 835-5555 |
| Sgs Us Testing Co 1341 N 108th East Ave, Tulsa 74116 | (918) 437-8333 |