| Business | Phone |
| Turner Machine Inc 603 Swan Dr, Smyrna 37167 | (615) 223-6500 |
| Tangent Industries 7112 Florence Rd, Smyrna 37167 | (615) 459-6921 |
| Butler Machine Co 1080 Courier Pl, Smyrna 37167 | (615) 220-9440 |
| R T & D Co 429 8th Ave, Smyrna 37167 | (615) 459-2059 |