| SMShelly Materials Plant #92 | Columbus | OH | — | ◇ UNVERIFIED |
| SASherbrooke Asphalt INC | Portable | MN | — | ◇ UNVERIFIED |
| SASherbrooke Asphalt Incorporated | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| SISherwin Industries INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| SCSherwood Construction CO INC / Millenial Asphalt Plant | Owasso | OK | — | ◇ UNVERIFIED |
| SCShilling Const. Gencor(asphalt Plant) (portable) | Manhattan | KS | — | ◇ UNVERIFIED |
| SCShilling Const. - Manhattan | Manhattan | KS | — | ◇ UNVERIFIED |
| SAShook Asphalt CO. INC. | Greenville | MI | — | ◇ UNVERIFIED |
| SBShort Brothers Construction INC | Marion | IL | — | ◇ UNVERIFIED |
| SASibley Aggregates - Nonmetallic | Belle Plaine | MN | — | ◇ UNVERIFIED |
| SCSiegrist Const | Denver | CO | — | ◇ UNVERIFIED |
| SCSierra Cascade Asphalt | Chester | CA | — | ◇ UNVERIFIED |
| SCSika CORP Industry Div | Union City | CA | — | ◇ UNVERIFIED |
| SESilver Eagle Refining - Woods Cross Inc.- Petroleum Products Refining | Woods Cross | UT | — | ◇ UNVERIFIED |
| SCSilvia Construction INC | Upland | CA | — | ◇ UNVERIFIED |
| SCSilvia Construction INC | San Jose | CA | — | ◇ UNVERIFIED |
| SASimon Aesco Madsen Portable B | Laramie County | WY | — | ◇ UNVERIFIED |
| SASimon Aesco Madsen Portable Bc Plant | Laramie | WY | — | ◇ UNVERIFIED |
| SCSimon - Cheyenne Asphalt - Mobile Bc Plant #3 | Cheyenne | WY | — | ◇ UNVERIFIED |
| SCSimon Contractors | Scottsbluff | NE | — | ◇ UNVERIFIED |
| SCSimon Contractors INC | Scottsbluff | NE | — | ◇ UNVERIFIED |
| SCSimon Contractors Mobile 01 | Statewide Portable | NE | — | ◇ UNVERIFIED |
| SCSimon Contractors - Rushmore Bc Plant | Statewide | CO | — | ◇ UNVERIFIED |
| SPSimon Portable Bc Plant #5 | Crook | WY | — | ◇ UNVERIFIED |
| SCSimpson Construction Materials LLC Valley Park | Valley Park | MO | — | ◇ UNVERIFIED |
| SOSinclair Oil Tulsa Refining Tulsa Trucking | Tulsa | OK | — | ◇ UNVERIFIED |
| SPSinger Plant | Everson | WA | — | ◇ UNVERIFIED |
| SSSisquoc Sand, Rock and Gravel Plant | Santa Maria | CA | — | ◇ UNVERIFIED |
| SMSite Masters Construction Inc, Hot Mix Plant 1 | Columbus | MS | — | ◇ UNVERIFIED |
| SCSja Concrete | Philadelphia | PA | — | ◇ UNVERIFIED |
| SUSkanska USA Civil West Ca Dist INC | Colton | CA | — | ◇ UNVERIFIED |
| SUSkanska USA - Hma Plant | Cortez | CO | — | ◇ UNVERIFIED |
| SASkippers Asphalt Plant | Jarratt | VA | — | ◇ UNVERIFIED |
| SPSlab Properties, LLC | Marriott-Slaterville | UT | — | ◇ 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 |