| ESI Structural Innovations | Salem,IL 62881 | (618) 548-3017 | |
| P.J.R. & Associates, Inc. | Campbell Hill,IL 62916-0009 | (618) 426-3325 | (618) 426-3713 |
| Martin Steel Fabrication, Inc. | Mascoutah,IL 62258 | (618) 566-9610 | (618) 566-3219 |
| Hanley Steel, Inc. | Peoria,IL 61615 | (309) 692-5250 | (309) 692-5251 |
| Professional Metal Works, L.L. | Freeburg,IL 62243 | (618) 539-2214 | (618) 539-2216 |