| Davinroy Mechanical Contractor | Belleville,IL 62220 | (618) 233-1112 | |
| McCarthy Building Companies, I | Collinsville,IL 62234 | (618) 344-4142 | |
| Mt. Carmel Stabilization Group | Mount Carmel,IL 62863-0458 | (618) 262-5118 | (618) 263-4084 |
| Energy Culvert Company, L.L.C. | Energy,IL 62933 | (618) 942-7381 | (618) 942-7834 |
| WWCS, Inc. | Cottage Hills,IL 62018 | (618) 258-1222 | (618) 258-1444 |
| Wissinger Construction, Inc. | Cairo,IL 62914 | (618) 734-2689 | |
| R.E. Pedrotti Co., Inc. | Fenton,MO 63026 | (636) 349-7100 | |