| Becker |
| Belt Tech |
| C& C Pump and Supply |
| CAB |
| Conveyor Accessories, Inc. |
| Custom Staffing |
| Donaldson Company |
| EBN Industrial Supply |
| Fabick |
| Fairmont Supply |
| FGX Septech |
| Flanders |
| GMS Mine Repair & Maintenance |
| Hallen Specialties |
| HD Supply |
| Huesker |
| IECC |
| Irwin Mine and Tunneling |
| J. H. Fletcher |
| Kennametal |
| Komatsu/Joy |
| Longwall Mining Services |
| Matrix Design Group |
| Mine & Process Service |
| Mine Supply |
| Nexans AmerCable |
| Quaker Chemical |
| Richwood |
| Royal Brass and Hose |
| Service Pump & Supply Co. |
| Southern Illinois Respiratory Disease Program |
| Southern Illinois Scale |
| Special Mine Services |
| State Electric |
| Sumitomo Drive Technologies/ Hansen Industrial Transmissions |
| Swanson Industries |
| Syntron Material Handling |
| TJB |
| United Central Industrial Supply |
| Victaulic |
| Work Care Ready Well |
| Xylem |