| Business | Phone |
| Geologic Services Corp 2699 Mosside Blvd, Monroeville 15146 | (412) 372-4448 |
| Skelly & Loy 2500 Eldo Rd # 2, Monroeville 15146 | (412) 856-1676 |
| Terra Contracting Svc Inc 117 Fox Rd # 103, Monroeville 15146 | (412) 380-9280 |
| Thermo Retec Consulting Corp 1 Monroeville Ctr, Monroeville 15146 | (412) 380-0140 |