| Business | Phone |
| Beckmar Environmental Labs 3251 Ruckriegel Pkwy, Louisville 40299 | (502) 266-6533 |
| Consulting Services Intl 11540 Blankenbaker Access Dr, Louisville 40299 | (502) 267-5182 |
| Derby City Engineering 812 Ulrich Ave, Louisville 40219 | (502) 969-8812 |
| Derby City Engrg & Inspctn Inc 812 Ulrich Ave, Louisville 40219 | (502) 969-9930 |
| Huntington Testing 925 Ulrich Ave, Louisville 40219 | (502) 964-0500 |
| Imr Metallurgical Svc 4102 Bishop Ln, Louisville 40218 | (502) 810-9007 |
| Louisville Testing Laboratory 1401 W Chestnut St, Louisville 40203 | (502) 584-5914 |
| Microbac Laboratories Inc 3323 Gilmore Industrial Blvd, Louisville 40213 | (502) 962-6400 |
| Mrs Analytical Laboratory Inc 323 W Broadway, Louisville 40202 | (502) 568-2088 |
| Torco Testing Svc 1207 Lexington Rd, Louisville 40204 | (502) 561-0506 |
| Torco Testing Svc Inc Louisville 40207 | (502) 896-1084 |
| World Radon Control Systems 10213 Linn Station Rd, Louisville 40223 | (502) 326-0073 |
| Code Services 4102 Bishop Ln, Louisville 40218 | (502) 449-7048 |
| Sarcosote 204 Old Harrods Creek Rd, Louisville 40223 | (502) 244-9133 |