| Business | Phone |
| Castings & Forgings 5898 S Joplin Ave, Tulsa 74135 | (918) 492-7466 |
| Gulf Coast Machine Supply Tulsa 74103 | (918) 583-9226 |
| H & L Tooth Co 10055 E 56th St N, Tulsa 74117 | (918) 272-0951 |
| Harold A O'Neil Co 2241 E Skelly Dr # 13, Tulsa 74105 | (918) 747-5733 |
| Tulsa Forge Ltd 5259 S 49th West Ave, Tulsa 74107 | (918) 446-4150 |
| Oklahoma Forge Inc 5259 S 49th West Ave, Tulsa 74107 | (918) 446-5553 |