| SBSanders Brothers Construction | Summerville | SC | — | ◇ UNVERIFIED |
| SFSanta Fe Aggregates, INC. | Waterford | CA | — | ◇ UNVERIFIED |
| SFSanta Fe Materials, Winton Plant | Winton | CA | — | ◇ UNVERIFIED |
| SCSanzari Construction CO | Lyndhurst | NJ | — | ◇ UNVERIFIED |
| SCSargent Corporation | Stillwater | ME | — | ◇ UNVERIFIED |
| SPSarver Paving Company (0193) (0303010193) | Ashland | OH | — | ◇ UNVERIFIED |
| SCSatterfield Construction:# 3 | Blair | SC | — | ◇ UNVERIFIED |
| SCSatterfield Construction CO INC Graniteville Plt | Graniteville | SC | — | ◇ UNVERIFIED |
| SBSbs Blacktop Service INC | Hibbing | MN | — | ◇ UNVERIFIED |
| SCSchellinger Construction - 3045 | Hamilton | MT | — | ◇ UNVERIFIED |
| SCSchmidt Const CO | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SCSchmidt Const CO | Castle Rock | CO | — | ◇ UNVERIFIED |
| STSchmidt Tiago Const CO | Arvada | CO | — | ◇ UNVERIFIED |
| SQSchoharie Quarry | Schoharie | NY | — | ◇ UNVERIFIED |
| SASchwarz Asphalt LLC / 8251 W Reno | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SMScioto Materials LLC St. Louisville (0145000400) | Saint Louisville | OH | — | ◇ UNVERIFIED |
| SRScott Rock - Sycamore Quarry | Sycamore | KS | — | ◇ 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 |
| 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 |
| SMSeal Masters INC / Adm Portable Plant 2 | Ardmore | OK | — | ◇ UNVERIFIED |
| SUSealmaster Utah | West Valley City | UT | — | ◇ UNVERIFIED |
| SISecon, Inc./stansteel 3000 | Bellevue | WA | — | ◇ UNVERIFIED |
| SCSedgwick CO. Public Works (asphalt Plant)(air) | Wichita | KS | — | ◇ 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 |
| SASenate Asphalt | Washington | DC | — | ◇ UNVERIFIED |
| SSSeneca Stone CORP | Fayette | NY | — | ◇ UNVERIFIED |
| SPSeward Plant | Liberty Hill | TX | — | ◇ UNVERIFIED |
| SGS& G Concrete | Finksburg | MD | — | ◇ UNVERIFIED |
| SAShad Asphalt Plant | Jacksonville | FL | — | ◇ UNVERIFIED |
| SSSharon Steel CORP (farrell Works Disposal Area) | Hermitage | PA | — | ◇ UNVERIFIED |
| SPSharp Paving Inc/shelocta Asphalt Plt | Shelocta | PA | — | ◇ UNVERIFIED |
| SASharps Asphalt | Springdale | AR | — | ◇ UNVERIFIED |
| SQSharps Quarry | Springdale | AR | — | ◇ UNVERIFIED |
| SSShea Sand & Gravel {jfs-sr} | Redding | CA | — | ◇ UNVERIFIED |
| SASheehan Asphalt Plant Potsdam | Potsdam | NY | — | ◇ UNVERIFIED |