| 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 |
| SCSchmidt Const CO INC Mencenberg Quarry | Castle Rock | CO | — | ◐ LIKELY ACTIVE |
| SCSchmidt Const CO - Menzer | Colorado Springs | CO | — | ◐ LIKELY ACTIVE |
| SCSchreiter Concrete | Wright City | MO | — | ◐ LIKELY ACTIVE |
| SCSchreiter Concrete CO. | Wright City | MO | 20–99 | ◐ LIKELY ACTIVE |
| SCSchuster Concrete Ready Mix - Cp18 | Alexandria | VA | — | ◐ LIKELY ACTIVE |
| SCSchuster Concrete Ready Mix - Kalahari | Woodford | VA | — | ◐ LIKELY ACTIVE |
| SMScioto Materials LLC | Westerville | OH | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC | Madisonville | KY | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC | Hartford | KY | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC | Bowling Green | KY | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC | Franklin | KY | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC | Russellville | KY | — | ◐ LIKELY ACTIVE |
| SCScottys Contracting & Stone LLC - Mcginnis Quarry Portable | Bowling Green | KY | — | ◐ LIKELY ACTIVE |
| SCScranton Craftsmen Incorporated | Throop | PA | 20–99 | ◐ LIKELY ACTIVE |
| SCScruggs Concrete Company | Madison | FL | — | ◐ LIKELY ACTIVE |
| SIScurlock Industries of Springfield-springfiled | Springfield | MO | — | ◐ LIKELY ACTIVE |
| SPSealy Plant | Sealy | TX | 20–99 | ◐ LIKELY ACTIVE |
| SASeashore Asphalt Corporation | Woodbine | NJ | — | ◐ LIKELY ACTIVE |
| SOSemo Operating Company | Bragg City | MO | — | ◐ LIKELY ACTIVE |
| SOSemo Operating Company | Cape Girardeau | MO | — | ◐ LIKELY ACTIVE |
| SRSemo Ready Mix | Marston | MO | — | ◐ LIKELY ACTIVE |
| SRSemo Ready Mix | Sikeston | MO | — | ◐ LIKELY ACTIVE |
| SRSemo Ready Mix, INC. | Cape Girardeau | MO | — | ◐ LIKELY ACTIVE |
| STSeparation Technologies LLC | Gibsonton | FL | — | ◐ LIKELY ACTIVE |
| SBSeptember Bloom Ready Mix Concrete Plant | Mcminnville | TN | — | ◐ LIKELY ACTIVE |
| SCSequatchie Concrete Service | Columbia | TN | — | ◐ LIKELY ACTIVE |
| SCSequatchie Concrete Service | Chattanooga | TN | — | ◐ LIKELY ACTIVE |
| SRSe Ready Mix - Okeechobee Commerce Park | Okeechobee | FL | — | ◐ LIKELY ACTIVE |
| SBSessler Building Materials Inc dba Barnes & Cone | Syracuse | NY | 20–99 | ◐ LIKELY ACTIVE |
| SQSFO Quikrete | Fremont | CA | 20–99 | ◐ LIKELY ACTIVE |
| SQSGF Quikrete | Springfield | MO | 1–19 | ◐ LIKELY ACTIVE |
| SAShallotte - Asphalt Plant | Shallotte | NC | — | ◐ LIKELY ACTIVE |
| SPShamrock Paving INC | Spokane | WA | — | ◐ LIKELY ACTIVE |
| SBSharpe Bros., a Div. of Vecellio & Grogan, INC. - Burnt Popl | Greensboro | NC | — | ◐ LIKELY ACTIVE |
| SBSharpe Bros., a Div. of Vecellio & Grogan, Inc.-lebanon Rd. | Greensboro | NC | — | ◐ LIKELY ACTIVE |
| SBSharpe Bros., a Div of Vecellio & Grogan, Inc.-liberty Rd | Greensboro | NC | — | ◐ LIKELY ACTIVE |
| SPShelbiana Plant #15 | Pikeville | KY | — | ◐ LIKELY ACTIVE |
| SCShelby Contracting CO INC | Huntsville | AL | — | ◐ LIKELY ACTIVE |
| SAShelbyville Asphalt CO LLC | Shelbyville | KY | — | ◐ LIKELY ACTIVE |
| SQShelbyville Quarry | Shelbyville | TN | — | ◐ LIKELY ACTIVE |
| SMShelly Materials, Inc. - Medina Supply Company | Medina | OH | 20–99 | ◐ LIKELY ACTIVE |
| SMShelly Materials, Plant # 128 (0387000348) | Portage | OH | — | ◐ LIKELY ACTIVE |
| SMShelly Materials Plant # 4132 | Toledo | OH | — | ◐ LIKELY ACTIVE |
| SMShelly Materials Plant # 61 | Circleville | OH | — | ◐ LIKELY ACTIVE |
Sherman Industries LLC Gardendale Plant | Birmingham | AL | — | ◐ LIKELY ACTIVE |
Sherman Industries LLC Sylacauga | Sylacauga | AL | — | ◐ LIKELY ACTIVE |
Sherman Industries - Trussville Plant | Trussville | AL | — | ◐ LIKELY ACTIVE |