| Business | Phone |
| Aeg Enterprises 229 Allenberry Cir, Pittsburgh 15234 | (412) 854-3010 |
| John Zink Co Pittsburgh 15216 | (412) 343-9688 |
| Monofrax Inc Pittsburgh 15216 | (412) 833-6695 |
| One Eight Seven Inc 10485 Frankstown Rd, Pittsburgh 15235 | (412) 243-7365 |
| Premier Refractories 27 Noblestown Rd, Pittsburgh 15220 | (412) 276-7249 |
| Refco Inc 1580 Mclaughlin Run Rd # 201, Pittsburgh 15241 | (412) 257-3450 |
| Resco Products Inc 2 Penn Ctr W # 430, Pittsburgh 15276 | (412) 494-4491 |
| Resco Products Inc 4 Penn Center Blvd, Pittsburgh 15205 | (412) 494-4491 |
| Sac Ind Sales Co 137 Industry Dr, Pittsburgh 15275 | (412) 787-7500 |
| Unifrax Corp 1910 Cochran Rd, Pittsburgh 15220 | (412) 563-6548 |
| William Dewey & Co 8035 Broadlawn Dr, Pittsburgh 15237 | (412) 367-8858 |