| Business | Phone |
| Alsey Refractories 1600 S Brentwood Blvd # 210, St Louis 63144 | (314) 963-7900 |
| Imrie-Gielow Inc 2823 Papin St, St Louis 63103 | (314) 772-4200 |
| Gillespie & Powers Inc 9550 True Dr, St Louis 63132 | (314) 423-9460 |
| Christy Refractories Co 4641 Mcree Ave, St Louis 63110 | (314) 773-7500 |