| RRRieth Riley Construction - Hudson Twp Pl | Boyne Falls | MI | — | ◐ LIKELY ACTIVE |
| RRieth-riley (n8295) | Caledonia | MI | — | ◐ LIKELY ACTIVE |
| RRRitchey's Redi Mix INC | Wray | CO | — | ◐ LIKELY ACTIVE |
| RCRiver City Concrete, INC - Waynesboro Plant | Waynesboro | TN | — | ◐ LIKELY ACTIVE |
| RMRiverside Materials Inc/asphalt Plt | Philadelphia | PA | — | ◐ LIKELY ACTIVE |
| RBRl Brink CORP | Quincy | IL | — | ◐ LIKELY ACTIVE |
| RRRobertson's Ready Mix | San Diego | CA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Front Royal Facility | Front Royal | VA | — | ◐ LIKELY ACTIVE |
| RRRock Road Companies INC - Townline Pit | Beloit | WI | — | ◐ LIKELY ACTIVE |
| RGRogers Group/greenbrier Asph | Greenbrier | AR | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC. | Sparta | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC. | Athens | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC. | Celina | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC - Cabot Quarry | Cabot | AR | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC. Dba Dayton Concrete Plant | Dayton | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC. Dba Pulaski Asphalt | Pulaski | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group INC - Gaffney Plant | Gaffney | SC | — | ◐ LIKELY ACTIVE |
| RGRogers Group, INC - Lafollette Asphalt | La Follette | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group INC - Pendleton Asphalt Plant | Pendleton | SC | — | ◐ LIKELY ACTIVE |
| RGRogers Group Inc., Roane County Asphalt | Harriman | TN | — | ◐ LIKELY ACTIVE |
| RGRogers Group INC. - Roane County Quarry | Harriman | TN | — | ◐ LIKELY ACTIVE |
| RRRogers Ready Mix 2 | Rogers | AR | — | ◐ LIKELY ACTIVE |
| RARomeoville Asphalt Plant | Romeoville | IL | — | ◐ LIKELY ACTIVE |
| RTRoncari Trap Rock Quarry | East Granby | CT | — | ◐ LIKELY ACTIVE |
| RPRoss Prestressed Concrete, INC | Knoxville | TN | — | ◐ LIKELY ACTIVE |
| RRR R Beasley Incorporated - Callao | Callao | VA | — | ◐ LIKELY ACTIVE |
| RSR & S Concrete | Madisonville | TN | — | ◐ LIKELY ACTIVE |
| RSR & S Concrete | Fresno | TX | — | ◐ LIKELY ACTIVE |
| RRR&t Redi Mix - 7355 Colorado 196 | Lamar 3.3 Mi. N of | CO | — | ◐ LIKELY ACTIVE |
| SPSabine Pass Lng LP - Sabine Pass Lng Import Terminal | Johnsons Bayou | LA | — | ◐ LIKELY ACTIVE |
| SCSaint Catherine Ready Mix Concrete Company INC | Natchez | MS | — | ◐ LIKELY ACTIVE |
| SCSalina Concrete Products | Salina | KS | — | ◐ LIKELY ACTIVE |
| SBSanders Brothers Construction:#2 | N Charleston | SC | — | ◐ LIKELY ACTIVE |
| SBSanders Brothers Construction Company INC Berkeley Plant | Summerville | SC | — | ◐ LIKELY ACTIVE |
| SBSanders Brothers Construction Company INC Mount Holly Plant | Moncks Corner | SC | — | ◐ LIKELY ACTIVE |
| SLSaranac Lake Quarry | Saranac Lake | NY | — | ◐ LIKELY ACTIVE |
| SMSargent Materials | East Machias | ME | — | ◐ LIKELY ACTIVE |
| SMSargent Materials Hermon Plant | Hermon | ME | — | ◐ LIKELY ACTIVE |
| SCSatterfield Construction Company Incorporated | Greenwood | SC | — | ◐ LIKELY ACTIVE |
| SQSavanna Quarry INC | Savanna | IL | — | ◐ LIKELY ACTIVE |
| SBS B Cox - Doswell | Doswell | VA | — | ◐ LIKELY ACTIVE |
| SBS B Cox Ready Mix - Gloucester Plant | Gloucester | VA | — | ◐ LIKELY ACTIVE |
| SBS B Cox Ready Mix Incorporated - Anderson Hwy | Powhatan | VA | — | ◐ LIKELY ACTIVE |
| SMScatt Materials CORP. | Bay Shore | NY | — | ◐ LIKELY ACTIVE |
| SCSchmidt Const CO - Fountain Pit | Fountain | CO | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC - Allen CO Asphalt Plant - Portable | Tompkinsville | KY | — | ◐ LIKELY ACTIVE |
| SCSeaford Concrete Products | Bridgeville | DE | — | ◐ LIKELY ACTIVE |
| SSSellersburg Stone CO INC (asphalt) | Sellersburg | IN | — | ◐ LIKELY ACTIVE |
| SRSemo Ready Mix, INC. | Cape Girardeau | MO | — | ◐ LIKELY ACTIVE |
| SCSequatchie Concrete Service | Estill Springs | TN | — | ◐ LIKELY ACTIVE |