| Business | Phone |
| Centennial Processing Llc 2600 E 5th Ave, Gary 46402 | (219) 886-2471 |
| Centennial Steel 2600 E 5th Ave, Gary 46402 | (219) 886-9669 |
| Central Illinois Steel Co 50 N Bridge St, Gary 46404 | (219) 882-1026 |
| Emde 201 Mississippi St, Gary 46402 | (219) 881-2690 |
| Essex Trading Co 2600 E 5th Ave, Gary 46402 | (219) 881-9794 |
| First Of Indiana Corp 1000 Colfax St, Gary 46406 | (219) 949-0035 |
| First Of Indiana Corp 4550 W 5th Ave, Gary 46406 | (219) 944-5604 |
| Triangle Steel Corp 5050 Industrial Hwy, Gary 46406 | (219) 949-8366 |
| Universal Steel America 86 N Bridge St, Gary 46404 | (219) 882-3050 |