| SRSantee Redi Mix | Moncks Corner | SC | — | ◇ UNVERIFIED |
| SLSantiago Lopez Concrete INC. | Lajas | PR | — | ◇ UNVERIFIED |
| SXSan Xavier Rock & Materials - Cortaro Plant #23 | Tucson | AZ | — | ◇ UNVERIFIED |
| STSarasota Transport LLC | Westerville | OH | — | ◇ UNVERIFIED |
| SPSaratoga Plant | Corpus Christi | TX | — | ◇ UNVERIFIED |
| SCSaunders Companies, INC. | Cortland | NY | — | ◇ UNVERIFIED |
| SRSavannah Ready Mix, LLC | Savannah | GA | — | ◇ UNVERIFIED |
| SCS.b. Cox Ready Mix | Newport News | VA | — | ◇ UNVERIFIED |
| SBS B Cox Ready Mix - Gloucester Plant | Gloucester | VA | — | ◇ UNVERIFIED |
| SBS B Cox Ready Mix INC - Chesapeake Plant | Chesapeake | VA | — | ◇ UNVERIFIED |
| SBS B Cox Ready Mix INC Doswell Plant | Doswell | VA | — | ◇ UNVERIFIED |
| SBS B Cox Ready Mix INC - Goochland Plant | Rockville | VA | — | ◇ UNVERIFIED |
| SBS B Cox Ready Mix-nottoway Plant | Blackstone | VA | — | ◇ UNVERIFIED |
| SRSchaaf Redi Mix | Atkinson | NE | — | ◇ UNVERIFIED |
| SCSchirz Concrete Products INC | Greenfield | IL | — | ◇ UNVERIFIED |
| STSchlumberger Technology Corporation | Grand Junction | CO | — | ◇ UNVERIFIED |
| SCSchreiter Concrete | Wright City | MO | — | ◇ UNVERIFIED |
| SRSchreiter Ready Mix | O Fallon | MO | — | ◇ UNVERIFIED |
| SSSchrey Systems INC | Newton | IL | — | ◇ UNVERIFIED |
| SCSchuster Concrete - Mid Pike | Rockville | MD | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix - Cp18 | Alexandria | VA | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix - Kalahari | Woodford | VA | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix - One Logistics | Winchester | VA | — | ◇ UNVERIFIED |
Schwartz Redi-mix INC | La Prairie | MN | — | ◇ UNVERIFIED |
| SRScioto Ready Mix | Dublin | OH | — | ◇ UNVERIFIED |
| SCScott City Ready Mix Plant | Scott City | KS | — | ◇ UNVERIFIED |
| SPScottsboro Plant | Scottsboro | AL | — | ◇ UNVERIFIED |
| SPSc Prestress Kingstree | Kingstree | SC | — | ◇ UNVERIFIED |
| SCScrap Central INC | Omaha | NE | — | ◇ UNVERIFIED |
| SCScruggs Concrete Company | Madison | FL | — | ◇ UNVERIFIED |
| SCSeaford Concrete Products | Bridgeville | DE | — | ◇ UNVERIFIED |
| SCSealy Concrete | Sealy | TX | — | ◇ UNVERIFIED |
| SPSeaport Portland Terminal | Portland | OR | — | ◇ UNVERIFIED |
| SCSebewaing Concrete Prod INC | Sebewaing | MI | — | ◇ UNVERIFIED |
| SASebring Airport Temporary Ready Mix Plant | Orlando | FL | — | ◇ UNVERIFIED |
| SCSe Concrete INC | Kingston | MA | — | ◇ UNVERIFIED |
| S0See 041-0231-03 Pete Lien & Sons | Colorado Springs | CO | — | ◇ UNVERIFIED |
| S0See 075/0089 Mcatee Construction Co- Riv | Sterling | CO | — | ◇ UNVERIFIED |
| SCSei Concrete - Clay CO Facility | Manchester | KY | — | ◇ UNVERIFIED |
| SOSemo Operating Company | Advance | MO | — | ◇ UNVERIFIED |
| SOSemo Operating Company | Bragg City | MO | — | ◇ UNVERIFIED |
| SOSemo Operating Company | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix | Sikeston | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Advance | Advance | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Cape Girardeau North | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Cape Girardeau South | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Dexter | Dexter | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix, INC. | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Kennett | Kennett | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Marston Site | Marston | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Poplar Bluff North | Poplar Bluff | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Poplar Bluff South | Poplar Bluff | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Sikeston East | Sikeston | MO | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Sikeston West | Sikeston | MO | — | ◇ UNVERIFIED |
| SBSeppi Brothers | Wuori Township | MN | — | ◇ UNVERIFIED |
| SBSeppi Brothers Concrete Products Corporation | Virginia | MN | — | ◇ UNVERIFIED |
| SBSeptember Bloom, INC | Mcminnville | TN | — | ◇ UNVERIFIED |
| SBSeptember Bloom Ready Mix Concrete Plant | Mcminnville | TN | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service | Chattanooga | TN | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service - Athens | Athens | TN | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service Inc, Helen of Troy Site | Olive Branch | MS | — | ◇ UNVERIFIED |
| SRSe Ready Mix - Okeechobee Commerce Park | Okeechobee | FL | — | ◇ UNVERIFIED |
| SPServall Plant/erie | Erie | PA | — | ◇ UNVERIFIED |
| SLService Lumber Company | Rolling Fork | MS | — | ◇ UNVERIFIED |
| SRService Rock Prods INC Las Vegas | Las Vegas | NV | — | ◇ UNVERIFIED |
| SRService Rock Products | Barstow | CA | — | ◇ UNVERIFIED |
| SRService Rock Products Corporation | Las Vegas | NV | — | ◇ UNVERIFIED |
| SRService Rock Products Corporation | Henderson | NV | — | ◇ UNVERIFIED |
| SRService Rock Products / Palmdale | Palmdale | CA | — | ◇ UNVERIFIED |
| SRSeward Road Batch Plant | Guthrie | OK | — | ◇ UNVERIFIED |
| SBSeyer Business Group, INC. | Beeville | TX | — | ◇ UNVERIFIED |
| SCS&g Concrete Company | Odenton | MD | — | ◇ UNVERIFIED |
| SGS & G Prestress Company | Wilmington | NC | — | ◇ UNVERIFIED |
| S1Sh 146 Cbp Site | Texas City | TX | — | ◇ UNVERIFIED |
| SCShamrock Concrete CO. | La Vista | NE | — | ◇ UNVERIFIED |
| SPShamrock Processed Base CO | Diamond Bar | CA | — | ◇ UNVERIFIED |
| SCSharp Concrete Company | Elko | NV | — | ◇ UNVERIFIED |
| SRShasta Redi-mix - Clear Creek | Redding | CA | — | ◇ UNVERIFIED |
| SRShasta Redi-mix (jfs-pf) | Lakehead | CA | — | ◇ UNVERIFIED |
| SRShasta Redi-mix - Pollard Flats | Pollard Flat | CA | — | ◇ UNVERIFIED |
| SCShaw Concrete, INC. | Henderson | TN | — | ◇ UNVERIFIED |
| SAShaw-davis-shaw - Agra | Agra | KS | — | ◇ UNVERIFIED |
| SCShaw-davis-shaw Concrete - Smith Center | Smith Center | KS | — | ◇ UNVERIFIED |
| SHS & H Concrete | Aurora | CO | — | ◇ UNVERIFIED |
| SLSheffield Lubricants | Casa Grande | AZ | — | ◇ UNVERIFIED |
| SCShelby Concrete - Clanton | Clanton | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete - Fairhope | Fairhope | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete - Gulf Shores | Gulf Shores | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete INC | Birmingham | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete, INC. | Trussville | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete, Inc.-bessemer Plant | Bessemer | AL | — | ◇ UNVERIFIED |
| SCShelby Concrete, INC. (powder Plant Facility) | Bessemer | AL | — | ◇ UNVERIFIED |
| SMShelby Materials | Westfield | IN | — | ◇ UNVERIFIED |
| SMShelby Materials Incorporated | Nashville | IN | — | ◇ UNVERIFIED |
| SOShell Oil Company | Carson | CA | — | ◇ UNVERIFIED |
| SOShell Oil Company | Shreveport | LA | — | ◇ UNVERIFIED |
| SOShell Oil Products US | Martinez | CA | — | ◇ UNVERIFIED |
| SOShell Oil Products US Van Nuys Terminal | Van Nuys | CA | — | ◇ UNVERIFIED |
| SLShelly Liquid Division | Gallipolis | OH | — | ◇ UNVERIFIED |