| Lab Number | Lab Name | City | State |
|---|---|---|---|
| 917414 | Barrett & Associates, Inc. Barrett & Associates Laboratory | Russellville | AR |
| 901400 | Blackstone Construction, LLC. Blackstone Laboratory | Russellville | AR |
| 919016 | Bobby Kennedy Construction BLK Quarries Laboratory | Rose Bud | AR |
| 911506 | Building & Earth Sciences, Inc. Springdale Laboratory | Springdale | AR |
| 918816 | Building & Earth Sciences, Inc. North Little Rock Laboratory | North Little Rock | AR |
| 916413 | Burns Cooley Dennis, Inc. Burns Cooley Dennis, Inc. Laboratory | Ridgeland | MS |