| SLShelly Liquid Division | Cleveland | OH | — | ◇ UNVERIFIED |
| SMShelly Materials | Lima | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Chillicothe | Chillicothe | OH | — | ◇ UNVERIFIED |
| SMShelly Materials INC | Columbus | OH | — | ◇ UNVERIFIED |
| SMShelly Materials, INC. - Plant #85 | Buckland | OH | — | ◇ UNVERIFIED |
| SMShelly Materials INC. Plt. #99 | Ohio | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant 24 (0180000002) | Ostrander | OH | — | ◇ UNVERIFIED |
| SMShelly Materials - Plant #25 (0812760039) | Springfield | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant #43 (0701000068) | Peebles | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant 65 | Dresden | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant #80 | Belle Center | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant #92 | Columbus | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant 93 | Hilliard | OH | — | ◇ UNVERIFIED |
| SMShelly Materials Plant No 94 (0145000399) | Reynoldsburg | OH | — | ◇ UNVERIFIED |
| SBShort Brothers Construction INC | Marion | IL | — | ◇ UNVERIFIED |
| SASibley Aggregates - Nonmetallic | Belle Plaine | MN | — | ◇ UNVERIFIED |
| SCSimon Contractors | Scottsbluff | NE | — | ◇ UNVERIFIED |
| SCSimon Contractors INC | Scottsbluff | NE | — | ◇ UNVERIFIED |
| SCSimon Contractors - Portable Plant #1 | Cheyenne | CO | — | ◇ UNVERIFIED |
| SMSite Masters Construction Inc, Hot Mix Plant 1 | Columbus | MS | — | ◇ UNVERIFIED |
| SUSkanska USA - Hma Plant | Cortez | CO | — | ◇ UNVERIFIED |
| SCSloan Construction:#16 | Cayce | SC | — | ◇ UNVERIFIED |
| SCSloan Construction:anderson | Anderson | SC | — | ◇ UNVERIFIED |
| SCSloan Construction Co-forsyth | Winston Salem | NC | — | ◇ UNVERIFIED |
| SMSloan Midstate Asphalt Plant | Columbia | SC | — | ◇ 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 |
| SCSmith Concrete Plant #05457 | Coshocton | OH | — | ◇ UNVERIFIED |
| SHSmithfield Hma | Smithfield | UT | — | ◇ UNVERIFIED |
| SQSmyrna Quarry | Smyrna | TN | — | ◇ UNVERIFIED |
| SESnell, E.r., Contractor, INC. | Buford | GA | — | ◇ UNVERIFIED |
| SRSoil Remediation INC | Kingsland | GA | — | ◇ UNVERIFIED |
| SSSoil Safe INC | Brandywine | MD | — | ◇ UNVERIFIED |
| SSoledad | Canyon Country | CA | — | ◇ UNVERIFIED |
| SESoutheast Emulsions – Perry Liquid Terminal | Perry | GA | — | ◇ UNVERIFIED |
| SCSoutheastern Concrete Company Inc, Plant Number 4 | Hattiesburg | MS | — | ◇ UNVERIFIED |
| SASouthern Asphalt | Conway | SC | — | ◇ UNVERIFIED |
| SISouthern Illinois Materials CO | Dodds | IL | — | ◇ UNVERIFIED |
| SISouthern Illinois Stone CO | Buncombe | IL | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Hma Plant #33 | Beaver | WV | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Huntington | Huntington | WV | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Mill Point | Hillsboro | WV | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Moorefield | Moorefield | WV | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Plant #52 Alta | Alta | WV | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Whitman | Whitman | WV | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Princeton/plant # | Princeton | WV | — | ◇ UNVERIFIED |
| SFSouth Florida Plant | Pompano Beach | FL | — | ◇ UNVERIFIED |
| SSSouth State CO | Williamstown | NJ | — | ◇ UNVERIFIED |
| STSouth Tyler Asphalt Plant | Tyler | TX | — | ◇ UNVERIFIED |