| SASaint-gobain Abrasive, INC. | Brownsville | TX | 100–499 | ◐ LIKELY ACTIVE |
| SSSalem Stone - Portable Metso Screen | Blacksburg | VA | — | ◐ 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 |
| SPSand Pit | Lake Havasu City | AZ | — | ◐ LIKELY ACTIVE |
| SFSanta Fe Fee H Tb Swdw #12 Facility | Marksville | LA | — | ◐ LIKELY ACTIVE |
| SRSantee Redi Mix | Moncks Corner | SC | — | ◐ LIKELY ACTIVE |
| SCSatterfield Construction Company | Greenwood | SC | — | ◐ LIKELY ACTIVE |
| SCSatterfield Construction Company - Clinton Asphalt Plant | Clinton | SC | — | ◐ LIKELY ACTIVE |
| SCSatterfield Construction Company INC Eureka | Eureka | 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 |
| SCSchmidt Const CO - Menzer | Colorado Springs | CO | — | ◐ LIKELY ACTIVE |
| SHSCHOTT Home Tech North America | Louisville | KY | 20–99 | ◐ 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 | Russellville | 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 - Mcginnis Quarry Portable | Bowling Green | KY | — | ◐ LIKELY ACTIVE |
| SCScranton Craftsmen Incorporated | Throop | PA | 20–99 | ◐ LIKELY ACTIVE |
| SCScruggs Concrete Company | Madison | FL | — | ◐ LIKELY ACTIVE |
| SDSd Dot - Glacial Lakes Rest Area | Aberdeen | SD | — | ◐ LIKELY ACTIVE |
| SPSealy Plant | Sealy | TX | 20–99 | ◐ LIKELY ACTIVE |
| SASeashore Asphalt Corporation | Woodbine | NJ | — | ◐ LIKELY ACTIVE |
| SUSediver Usa, INC | West Memphis | AR | 20–99 | ◐ 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 |
| SBSeptember Bloom Ready Mix Concrete Plant | Mcminnville | TN | — | ◐ LIKELY ACTIVE |
| SCSequatchie Concrete Service | Chattanooga | TN | — | ◐ LIKELY ACTIVE |
| SCSequatchie Concrete Service | Columbia | TN | — | ◐ LIKELY ACTIVE |
| SRSe Ready Mix - Okeechobee Commerce Park | Okeechobee | FL | — | ◐ 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 |