| Business | Phone |
| Heartland Industries 111 Susan Ave, Hopkinsville 42240 | (270) 707-0005 |
| American Micron Technologies 3433 Old Hickory Ct, Hopkinsville 42240 | (270) 707-0005 |
| Clean Air Technology Solutions 1209 S Virginia St, Hopkinsville 42240 | (270) 890-0412 |