| QCQuikrete Construction Materials, LLC - Green Bay Ready Mix | Davenport | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - San Antonio Facility | San Antonio | FL | — | ◐ LIKELY ACTIVE |
| QPQuikrete Proposed Storage Yard Site Improvements | Bowman | SC | — | ◐ LIKELY ACTIVE |
| RCRalph Clayton & Sons Clayton Tinton Falls Plant | Tinton Falls | NJ | — | ◐ LIKELY ACTIVE |
| RRRamsey Rmx, Minneapolis Rmx, St Paul Rmx | Minneapolis | MN | — | ◐ LIKELY ACTIVE |
| RRRancho Ready Mix Products, L.P Lake Elsinore | Colton | CA | 1–19 | ◐ LIKELY ACTIVE |
| RCRc Concrete | Burgettstown | PA | — | ◐ LIKELY ACTIVE |
| RMReady Mix Concrete, INC. | Fredericktown | MO | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company - Old Stage Road | Chester | VA | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete CO - Plant 1 | Denver | CO | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA LLC. | Dallas | GA | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC - Bay Minette | Bay Minette | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC Dba Boones Creek Concrete Plant | Johnson City | TN | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - Racetrack Road Plant | Fort Walton Beach | FL | — | ◐ LIKELY ACTIVE |
| RRRealco Recycling CO. INC. | Jacksonville | FL | — | ◐ LIKELY ACTIVE |
| RERed E Mix LLC | Highland | IL | — | ◐ LIKELY ACTIVE |
| RERed E Mix LLC | Troy | IL | — | ◐ LIKELY ACTIVE |
| RFRedwood Falls Ready Mix | Redwood Falls | MN | 1–19 | ◐ LIKELY ACTIVE |
| RCReis Concrete Products INC | Falmouth | KY | — | ◐ LIKELY ACTIVE |
| RPR.e. Pierson Materials Vineland Concrete | Vineland | NJ | — | ◐ LIKELY ACTIVE |
| RMRinker Materials - Grand Junction | Grand Junction | CO | — | ◐ LIKELY ACTIVE |
| RCRiver City Concrete, INC. - Savannah | Savannah | TN | — | ◐ LIKELY ACTIVE |
| RCRiverside Const Materials/bristol Twp | Bristol | PA | — | ◐ LIKELY ACTIVE |
| RCRmc Carolina Materials Incorporated | Stokesdale | NC | — | ◐ LIKELY ACTIVE |
| RBRoanoke Block - Plant 716 | Roanoke | VA | — | ◐ LIKELY ACTIVE |
| RCRoanoke Cement Company | Winston Salem | NC | — | ◐ LIKELY ACTIVE |
| RRRobertson Ready Mix | Winfield | AL | — | ◐ LIKELY ACTIVE |
| RARockingham Asphalt INC - Harrisonburg | Harrisonburg | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Blacksburg Facility | Blacksburg | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Boyd Tavern Facility | Troy | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Charlottesville Facility | Charlottesville | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Fishersville Facility | Waynesboro | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Garbers Church Facility | Harrisonburg | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Lexington Facility | Lexington | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Pulaski Facility | Pulaski | VA | — | ◐ LIKELY ACTIVE |
| RMRocky Mountain Ready Mix Concrete, Incorporated | Brighton | CO | — | ◐ LIKELY ACTIVE |
| RMRocky Mount Ready Mix Concrete INC | Rocky Mount | VA | — | ◐ LIKELY ACTIVE |
| RCRocla Concrete Tie Inc-Pueblo | Pueblo | CO | 20–99 | ◐ LIKELY ACTIVE |
| RRRost Ready Mix | Marshfield | MO | 20–99 | ◐ LIKELY ACTIVE |
| RBRw Busse Excavating | Grand Lake | CO | — | ◐ LIKELY ACTIVE |
| SDSaltillo Division of B and B Concrete Company INC | Saltillo | MS | — | ◐ LIKELY ACTIVE |
| SBSan Bernardino Plant 12 | San Bernardino | CA | 1–19 | ◐ LIKELY ACTIVE |
| SFSanta Fe Fee H Tb Swdw #12 Facility | Marksville | LA | — | ◐ LIKELY ACTIVE |
| SRSantee Redi Mix | Moncks Corner | SC | — | ◐ LIKELY ACTIVE |
| SBS B Cox Concrete | Sandston | VA | — | ◐ LIKELY ACTIVE |
| SBS B Cox Ready Mix INC - Chesapeake Plant | Chesapeake | VA | — | ◐ LIKELY ACTIVE |
| SBS B Cox Ready Mix INC - Goochland Plant | Rockville | VA | — | ◐ LIKELY ACTIVE |
| SBS B Cox Ready Mix-nottoway Plant | Blackstone | VA | — | ◐ LIKELY ACTIVE |
| SCSchreiter Concrete | Wright City | MO | — | ◐ LIKELY ACTIVE |
| SCSchreiter Concrete CO. | Wright City | MO | 20–99 | ◐ LIKELY ACTIVE |