| SPSimon Portable Bc Plant #5 | Crook | WY | — | ◇ UNVERIFIED |
| SCSimpson Construction Materials LLC Valley Park | Valley Park | MO | — | ◇ UNVERIFIED |
| SCSimpson County Ready Mix Concrete, Plant Number 6 | Magee | MS | — | ◇ UNVERIFIED |
| SSSims Stone CO. of Georgia, LLC | Woodbury | GA | — | ◇ UNVERIFIED |
| SPSinger Plant | Everson | WA | — | ◇ UNVERIFIED |
| STSintx Technologies | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SCSiree Chambers | Glendale | CA | — | ◇ UNVERIFIED |
| SMSir Mix Concrete Products, INC. | Carson | CA | — | ◇ UNVERIFIED |
| SSS.i. Shreveport Corporation | Shreveport | LA | — | ◇ UNVERIFIED |
| SSSisquoc Sand, Rock and Gravel Plant | Santa Maria | CA | — | ◇ UNVERIFIED |
| SMSite Masters Construction Inc, Hot Mix Plant 1 | Columbus | MS | — | ◇ UNVERIFIED |
| SOSitemix of Alabama | Dadeville | AL | — | ◇ UNVERIFIED |
| SMSite-ready Materials and Recycling | Tiverton | RI | — | ◇ UNVERIFIED |
| SSSix S INC Pt 1 | Waterford | MI | — | ◇ UNVERIFIED |
| SCSja Concrete | Philadelphia | PA | — | ◇ UNVERIFIED |
| SHSj Hhg Hotel Devel Dba Residence Inn/springhill | San Jose | CA | — | ◇ UNVERIFIED |
| SASjostrom and Sons INC | South Beloit | IL | — | ◇ UNVERIFIED |
| SJS Jostrom & Sons INC | Oregon | IL | — | ◇ UNVERIFIED |
| SSSjostrom & Sons INC | Rockford | IL | — | ◇ UNVERIFIED |
| SSSjostrom & Sons INC | Rockford | IL | — | ◇ UNVERIFIED |
| SRSkagit Ready Mix Mcfarland Road | Mount Vernon | WA | — | ◇ UNVERIFIED |
| S3Skanska - 3 Mile Bridge Pre-cast Facility | Pensacola | FL | — | ◇ UNVERIFIED |
| SUSkanska USA Civil West Ca Dist INC | Colton | CA | — | ◇ UNVERIFIED |
| SUSkanska USA - Hma Plant | Cortez | CO | — | ◇ UNVERIFIED |
| SASkippers Asphalt Plant | Jarratt | VA | — | ◇ UNVERIFIED |
| SCSkirball Center | Los Angeles | CA | — | ◇ UNVERIFIED |
| SBSkookumchuck Batch Plants | Rainier | WA | — | ◇ UNVERIFIED |
| SLSky Living Investments | Gardena | CA | — | ◇ UNVERIFIED |
| SRSky Ready Mix | Lancaster | CA | — | ◇ UNVERIFIED |
| SRSky Ready Mix, Inc. | Van Nuys (los Angeles) | CA | — | ◇ UNVERIFIED |
| SRSky Ready Mix LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SLSlabhaus LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SPSlab Properties, LLC | Marriott-Slaterville | UT | — | ◇ UNVERIFIED |
| SHSlk Holdings LLC | Lincoln | NE | — | ◇ UNVERIFIED |
| SCSloan Construction:#13-closed | Gray Court | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:#14-closed | Duncan | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:#16 | Cayce | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:# 7 | Columbia | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:anderson | Anderson | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:blacksburg | Blacksburg | SC | — | ◇ UNVERIFIED |
| SCSloan Construction Co-forsyth | Winston Salem | NC | — | ◇ UNVERIFIED |
| SCSloan Construction Company INC | Duncan | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:duncan | Duncan | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:liberty | Liberty | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:pacolet | Pacolet | SC | — | ◇ UNVERIFIED |
| SMSloan Midstate Asphalt Plant | Columbia | SC | — | ◇ UNVERIFIED |
| SPSlurry Pavers, INC. | Morehead City | NC | — | ◇ UNVERIFIED |
| SLS L Williamson & CO - Red Hill | North Garden | VA | — | ◇ UNVERIFIED |
| SLS L Williamson & CO - Ruckersville | Ruckersville | VA | — | ◇ UNVERIFIED |
| SLS L Williamson & CO - Shadwell | Charlottesville | VA | — | ◇ UNVERIFIED |