| SASchwarz Asphalt LLC / 8251 W Reno | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SPScio Packaging Company | Scio | OH | — | ◇ UNVERIFIED |
| SMScioto Materials LLC St. Louisville (0145000400) | Saint Louisville | OH | — | ◇ UNVERIFIED |
| SRScott Rock - Sycamore Quarry | Sycamore | KS | — | ◇ UNVERIFIED |
| SPScottsboro Plant | Scottsboro | AL | — | ◇ UNVERIFIED |
| SCScott's Concrete Camdenton | Camdenton | MO | — | ◇ UNVERIFIED |
| SCScotty's Contracting | Elkton | KY | — | ◇ UNVERIFIED |
| SCScottys Contracting & Stone LLC | Cave City | KY | — | ◇ UNVERIFIED |
| SCScottys Contracting & Stone LLC - Asphalt Plant | Cave City | KY | — | ◇ UNVERIFIED |
| SCScottys Contracting & Stone LLC - Portable Power Screen | Fort Knox | KY | — | ◇ UNVERIFIED |
| SCScotty's Contracting & Stone LLC - Qualified Paving | Leitchfield | KY | — | ◇ UNVERIFIED |
| SCScottys Contracting & Stone LLC - Rocky Asphalt Plant E-town | Horse Cave | KY | — | ◇ UNVERIFIED |
| SCScottys Contracting & Stone LLC - Scottsville Asphalt Plant | Scottsville | KY | — | ◇ UNVERIFIED |
| SCScottys Contracting & Stone LLC - Tompkinsville Asphalt Plant | Tompkinsville | KY | — | ◇ UNVERIFIED |
| SPSc Prestress Kingstree | Kingstree | SC | — | ◇ UNVERIFIED |
| SPSc Prestress Lakecity | Lake City | SC | — | ◇ UNVERIFIED |
| SCScrap Central INC | Omaha | NE | — | ◇ UNVERIFIED |
| SIScrap It LLC | Mulberry | FL | — | ◇ UNVERIFIED |
| SCScruggs Company | Meigs | GA | — | ◇ UNVERIFIED |
| SCScruggs Company (plt #3) | Valdosta | GA | — | ◇ UNVERIFIED |
| SDSd Dot - Glacial Lakes Rest Area | Aberdeen | SD | — | ◇ UNVERIFIED |
| SASeaboard Asphalt Products Company | Baltimore | MD | — | ◇ UNVERIFIED |
| SCSeaboard Construction | Brunswick | GA | — | ◇ UNVERIFIED |
| SMSeaforth Mineral & Ore CO INC | East Liverpool | OH | — | ◇ UNVERIFIED |
| SMSeal Masters INC / Adm Portable Plant 2 | Ardmore | OK | — | ◇ UNVERIFIED |
| SUSealmaster Utah | West Valley City | UT | — | ◇ UNVERIFIED |
| SCSebewaing Concrete Prod INC | Sebewaing | MI | — | ◇ UNVERIFIED |
| SASebring Airport Temporary Ready Mix Plant | Orlando | FL | — | ◇ UNVERIFIED |
| SCSe Concrete INC | Kingston | MA | — | ◇ UNVERIFIED |
| SISecon, Inc./stansteel 3000 | Bellevue | WA | — | ◇ UNVERIFIED |
| SCSedgwick CO. Public Works (asphalt Plant)(air) | Wichita | KS | — | ◇ UNVERIFIED |
| S0See 041-0231-03 Pete Lien & Sons | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SRSega Redi-mix | Waterbury | CT | — | ◇ UNVERIFIED |
| SCSei Concrete - Clay CO Facility | Manchester | KY | — | ◇ UNVERIFIED |
| SCSelect Concrete CO. LLC | Star City | AR | — | ◇ UNVERIFIED |
| SCSelvage Concrete Products, INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SBSeminole Bp | Seminole | OK | — | ◇ UNVERIFIED |
| SMSem Materials, INC. | Ardmore | OK | — | ◇ UNVERIFIED |
| SLSemmaterials L.p. | Fontana | CA | — | ◇ UNVERIFIED |
| SLSemmaterials LP | Conley | GA | — | ◇ UNVERIFIED |
| SLSemmaterials, L.p. - Ogden Ut | Ogden | UT | — | ◇ UNVERIFIED |
| SLSemmaterials LP Spokane | Spokane | WA | — | ◇ UNVERIFIED |
| SOSemo Operating Company | Advance | MO | — | ◇ UNVERIFIED |
| SASenate Asphalt | Washington | DC | — | ◇ UNVERIFIED |
| SSSeneca Stone CORP | Fayette | NY | — | ◇ UNVERIFIED |
| STSenter Transit Mix Division of Concrete Industries INC | Tupelo | MS | — | ◇ UNVERIFIED |
| STSeparation Technologies LLC | York Haven | PA | — | ◇ UNVERIFIED |
| SBSeptember Bloom, INC | Mcminnville | TN | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service - Dayton | Dayton | TN | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service, Inc-closed | Nashville | TN | — | ◇ UNVERIFIED |