| RRR.a. Ruud & Son, INC. - Haysville | Haysville | KS | — | ◇ UNVERIFIED |
| RRRatliff Ready Mix Ennis Plant 20 | Ennis | TX | — | ◇ UNVERIFIED |
| RRRatliff Ready Mix Plant 7 | Belton | TX | — | ◇ UNVERIFIED |
| RRRatliff Ready-mix Whitney Plant P3 | Whitney | TX | — | ◇ UNVERIFIED |
| RCRazorback Concrete 113 | Jonesboro | AR | — | ◇ UNVERIFIED |
| RCRazorback Concrete 119 | Osceola | AR | — | ◇ UNVERIFIED |
| RCRazorback Concrete - Brs Portable Site | Osceola | AR | — | ◇ UNVERIFIED |
| RCRc Construction CO INC | Charleston | SC | — | ◇ UNVERIFIED |
| RCR. Chapman Construction Harmston Pit | Roosevelt | UT | — | ◇ UNVERIFIED |
| RCRea Contracting, LLC 0140 Concrete Plant | Salisbury | NC | — | ◇ UNVERIFIED |
| RMReady Mix Concrete INC | Corbin | KY | — | ◇ UNVERIFIED |
| RMReady Mix Concrete INC - Monticello | Monticello | KY | — | ◇ UNVERIFIED |
| RMReady Mix Concrete INC - North Lexington | Lexington | KY | — | ◇ UNVERIFIED |
| RMReady Mix Concrete INC - Somerset | Somerset | KY | — | ◇ UNVERIFIED |
| RMReady Mix Concrete Inc-ste Genevieve Plant | Ste. Genevieve | MO | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete | Rocky Mount | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete #84 Florence-closed | Florence | SC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete #85 Marion | Marion | SC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Chalco Plant | Omaha | NE | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Clinton Plant | Clinton | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO | Columbia | SC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO | Richmond | VA | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO | Rural Hall | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO. | Gretna | NE | — | ◇ UNVERIFIED |
| RCReady-mixed Concrete CO. (52nd & Hwy 2) | Lincoln | NE | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO 7th&seward Plant | Omaha | NE | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO - Del Camino | Firestone | CO | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO Elkhorn Plant | Elkhorn | NE | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO -franklin Plnt 2 | Denver Area | CO | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO. - Goldsboro | Goldsboro | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO - Greenville | Greenville | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Winston Salem | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Williamston | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Wilmington | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Plymouth | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Castle Hayne | Castle Hayne | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Havelock | Havelock | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company, Plant #3, Westgate Rd | Raleigh | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Plant 47 | Williamsburg | VA | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company-reames Plan | Charlotte | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Shallotte | Shallotte | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO Plant 33 | New Bern | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO Plant 6 | Castle Rock | CO | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO Portable Plt | Georgetown | SC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO. - Washington | Washington | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Fayetteville Plant | Fayetteville | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Nix S&g Mine | Platteville | CO | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Plant No 4 - Hoke | Raeford | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Plant No 6 -laurinburg | Laurinburg | NC | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Plant Number 3 - Spring Lake | Spring Lake | NC | — | ◇ UNVERIFIED |