| Business | Phone |
| Euclid Machine & Tool Inc 4450 Euclid Ave, East Chicago 46312 | (219) 397-1374 |
| Herald Machine Shop Works Inc 4500 Euclid Ave, East Chicago 46312 | (219) 397-9904 |
| Keystone Machine Svc 1520 E Chicago Ave, East Chicago 46312 | (219) 397-6792 |
| Lightbeam Technology 4809 Tod Ave, East Chicago 46312 | (219) 397-1684 |
| Psc Machining & Engineering 3468 Watling St, East Chicago 46312 | (219) 397-4295 |