| Business | Phone |
| Dock Street Manufacturer Inc 10 Dock St, Du Bois 15801 | (814) 372-6290 |
| Igm Carbon 10 Dock St, Du Bois 15801 | (814) 371-6280 |
| Mcd Machine Inc 335 Aspen Way, Du Bois 15801 | (814) 372-2345 |
| Penn Central Industries 201 Valley Ave, Du Bois 15801 | (814) 371-2566 |
| Superior Machining Inc 317 Aspen Way, Du Bois 15801 | (814) 372-2270 |