| Business | Phone |
| Whittenberg Engineering Corp 333 12th Ave Se, Norman 73071 | (405) 364-9926 |
| Hendrick-Associates 400 Westside Dr, Norman 73069 | (405) 321-1551 |
| Horner Associates Engr Inc 1306 Commerce Dr, Norman 73071 | (405) 801-2528 |
| Hunt Engineering Inc 2241 W Lindsey St # 510, Norman 73069 | (405) 843-4990 |
| John M Campbell & Co 1215 Crossroads Blvd # 230, Norman 73072 | (405) 321-1383 |
| Joyce Gray & Assoc 2605 Barry Switzer Ave, Norman 73072 | (405) 360-0158 |
| Kendrix Structural Engineering Norman 73069 | (405) 329-9360 |
| Kent Engineering Inc 5 Burlington Pl, Norman 73072 | (405) 834-3434 |
| Weimer Consultint Llc 1539 Woods Cir, Norman 73069 | (405) 826-9320 |
| Us Cokertech Llc 4928 Baker St, Norman 73072 | (405) 701-5000 |
| Surfactant Associates 1610 Abe Martin Dr, Norman 73071 | (405) 366-7677 |
| Systems Engineering Management 414 Lamp Post Rd, Norman 73072 | (405) 447-0095 |
| Support Services Engineering 3360 Allspice Run, Norman 73026 | (405) 321-0916 |
| Search Inc 1225 W Main St # 104, Norman 73069 | (405) 364-0900 |
| Robert B Hendrick & Sons Co 3625 W Main St # 106, Norman 73072 | (405) 321-3447 |
| Quest Consultants Inc 908 26th Ave Nw # 103, Norman 73069 | (405) 329-7475 |
| Pioneer Repair 131 N Porter Ave, Norman 73071 | (405) 360-2500 |
| Pds Engineering 710 Asp Ave, Norman 73069 | (405) 329-2223 |
| Leonard B West Engineering Inc 408 Terrace Pl, Norman 73069 | (405) 329-1839 |