| Business | Phone |
| D & R Machine Co Inc 5 Cut St, Alton 62002 | (618) 465-9025 |
| Gateway Laser Technology Inc 1480 Pearl St, Alton 62002 | (618) 462-8851 |
| Innovative Machining 2645 E Broadway, Alton 62002 | (618) 465-8789 |
| Lenhardt Tool & Die Co 3100 E Broadway, Alton 62002 | (618) 462-1075 |