| SCSelvage Concrete Products, INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SPSeminole Precast Manufacturing, INC. | Macon | GA | — | ◇ UNVERIFIED |
| SCSemper Concrete Products | Butler | PA | — | ◇ UNVERIFIED |
| SBSeppi Brothers Concrete Products Corporation | Virginia | MN | — | ◇ UNVERIFIED |
| STSergio Tiscarreno Dba Bella Mouldings | Bell Gardens | CA | — | ◇ UNVERIFIED |
| SGS - G Concrete Company, Llc- Grantley Ave. Plant | Baltimore | MD | — | ◇ UNVERIFIED |
| SSShannon Street Pre-cast Facility | Chesapeake | VA | — | ◇ UNVERIFIED |
| SESharper Edge | Kansas City | MO | — | ◇ UNVERIFIED |
| SCShea Concrete Production INC. | Nottingham | NH | — | ◇ UNVERIFIED |
| SCShea Concrete Products | Nottingham | NH | — | ◇ UNVERIFIED |
| SDSherman Dixie Concrete Industries | Lexington | KY | — | ◇ UNVERIFIED |
| SDSherman Dixie Concrete Industries INC | Elizabethtown | KY | — | ◇ UNVERIFIED |
| SCSherman-dixie Concrete Industries INC | Glendale | KY | — | ◇ UNVERIFIED |
| SRSherman Ready Mix Concrete Co.(n.birmingham) | Birmingham | AL | — | ◇ UNVERIFIED |
| SPShoaf Precast Septic Tank, INC. | Lexington | NC | — | ◇ UNVERIFIED |
| SSShondel's Stone Creations | Centerville | IA | — | ◇ UNVERIFIED |
| SCShope Concrete Products CO | Puyallup | WA | — | ◇ UNVERIFIED |
| SSShoreline Stone Manufacturing Carib, INC. | Largo | FL | — | ◇ UNVERIFIED |
| SPSierra Pacific | Oakland | CA | — | ◇ UNVERIFIED |
| SFSi Funeral Services | Saint Joseph | MO | — | ◇ UNVERIFIED |
| SASika Albuquerque | Albuquerque | NM | — | ◇ UNVERIFIED |
| SCSika Corperation | Riverside | CA | — | ◇ UNVERIFIED |
| SCSika Corporation | Conyers | GA | — | ◇ UNVERIFIED |
| SVSimerly Vaults, INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| SSS.i. Shreveport Corporation | Shreveport | LA | — | ◇ UNVERIFIED |
| SLSlabhaus LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SHSlk Holdings LLC | Lincoln | NE | — | ◇ UNVERIFIED |
| SCSmith - Carolina Corporation | Reidsville | NC | — | ◇ UNVERIFIED |
| SCSmith Columbia Corporation | Hopkins | SC | — | ◇ UNVERIFIED |
| SGSmith Garden Center & Landscaping INC. | Macomb | IL | — | ◇ UNVERIFIED |
| SCSmiths Concrete Products Incorporated | Bishopville | SC | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete | Lewisburg | TN | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete LLC Plant 257 | Grand Rivers | KY | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix - Portable Ready Mix 2 | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SESolar Erectors U.s. INC. | Doral | FL | — | ◇ UNVERIFIED |
| SBSouth Bay Concrete Design LLC | Sayville | NY | — | ◇ UNVERIFIED |
| SCSoutheast Construction Products, INC. | Daytona Beach | FL | — | ◇ UNVERIFIED |
| SPSoutheastern Pipe & Precast INC | Cantonment | FL | — | ◇ UNVERIFIED |
| SPSoutheastern Prestressed Concrete INC | West Palm Beach | FL | — | ◇ UNVERIFIED |
| SSSoutheast Stone Restoration, LLC | Orlando | FL | — | ◇ UNVERIFIED |
| SCSouthern Concrete Construction Company, INC. | Norman Park | GA | — | ◇ UNVERIFIED |
| SCSouthern Crushed Concrete, LLC | Corpus Christi | TX | — | ◇ UNVERIFIED |
| SHSouthern Heritage Masonry, LLC | Atlanta | GA | — | ◇ UNVERIFIED |
| SMSouthern Meter Box, INC. | Alexandria | LA | — | ◇ UNVERIFIED |
| SPSouthern Precast Concrete Corporation | Tarpon Springs | FL | — | ◇ UNVERIFIED |
| SUSouthern Utah Vault Co., INC. | Washington | UT | — | ◇ UNVERIFIED |
| SVSouthern Vermont Precast, INC. | Westminster | VT | — | ◇ UNVERIFIED |
| SWSouth West Concrete Products | Ontario | CA | — | ◇ UNVERIFIED |
| SPSouthwestern Packaging & Seals | Shreveport | LA | — | ◇ UNVERIFIED |
| SSpancrete | Newnan | GA | — | ◇ UNVERIFIED |
| SISpancrete Industries, INC. | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| SISpancrete Industries - Valders | Valders | WI | — | ◇ UNVERIFIED |
| SISpancrete Industries - Waukesha | Waukesha | WI | — | ◇ UNVERIFIED |
| SOSpancrete of Illinois | Crystal Lake | IL | — | ◇ UNVERIFIED |
| SWSpeedling Welding Trailer Dba Svj Creative Designs | Kellogg | MN | — | ◇ UNVERIFIED |
| SESperos Enterprises, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SCSpray Com Utilities Inc.* | Knob Noster | MO | — | ◇ UNVERIFIED |
| SCSpringfield Concrete Recycling LLC | Springfield | IL | — | ◇ UNVERIFIED |
| SCSR Concrete Resurfacing, Inc. | Luthersburg | PA | — | ◇ UNVERIFIED |
| SSS & S Precast, INC. | Bonita Springs | FL | — | ◇ UNVERIFIED |
| STSss Transport INC. | Hayward | CA | — | ◇ UNVERIFIED |
| SPSsw Premier, LLC | Portland | TN | — | ◇ UNVERIFIED |
| SAStaco Architectural Roof Tile | Phoenix | AZ | — | ◇ UNVERIFIED |
| SSStafford Stone Works, LLC. | Fredericksburg | VA | — | ◇ UNVERIFIED |
| SCStandard Concrete Products | Tampa | FL | — | ◇ UNVERIFIED |
| SPStandard Precast, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| SSStandard Sand & Silica Company | Lake Wales | FL | — | ◇ UNVERIFIED |
| SSStandard Supply CO | Maysville | KY | — | ◇ UNVERIFIED |
| SCStar Concrete | Gilroy | CA | — | ◇ UNVERIFIED |
| SPStarks Pipe CO | Almo | KY | — | ◇ UNVERIFIED |
| SCState Crushing, INC. | Auburn Hills | MI | — | ◇ UNVERIFIED |
| SCState Crushing, Inc.-east | Warren | MI | — | ◇ UNVERIFIED |
| SIStepstone, INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| SWSterling Wilbert Vault CO | Sterling | IL | — | ◇ UNVERIFIED |
| SPSti Precast | Leominster | MA | — | ◇ UNVERIFIED |
| SJSt. Joe Concrete Products | Elwood | KS | — | ◇ UNVERIFIED |
| SJSt. Johns Precast, INC. | Saint Augustine | FL | — | ◇ UNVERIFIED |
| SLSt Louis Flexicore INC | East Saint Louis | IL | — | ◇ UNVERIFIED |
| SCStone Cast, INC. | Houston | TX | — | ◇ UNVERIFIED |
| SDStonemark Designs, Inc. | Huntsville | TX | — | ◇ UNVERIFIED |
| SSStone Specialties, INC. | Lakeland | FL | — | ◇ UNVERIFIED |
| SSStone Spirit, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| STStone Technology Distributors, INC. | West Palm Beach | FL | — | ◇ UNVERIFIED |
| SAStoneworks Architectural Precast INC | Elk River | MN | — | ◇ UNVERIFIED |
| SOStoneworks of Manatee INC | Bradenton | FL | — | ◇ UNVERIFIED |
| SYStone Yard | San Diego | CA | — | ◇ UNVERIFIED |
| SCStress Con | Kalamazoo | MI | — | ◇ UNVERIFIED |
| SIStress-con Industries INC | Saginaw | MI | — | ◇ UNVERIFIED |
| SPStructural Plank Industries INC Carroll Shelby | Sebring | FL | — | ◇ UNVERIFIED |
| SPStructural Plank Industries INC Deer Trail Facility | Sebring | FL | — | ◇ UNVERIFIED |
| SPStructural Prestressed Industries INC. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| SPStructural Prestressed Industries, INC. | Miami | FL | — | ◇ UNVERIFIED |
| SPStructural Prestressed Industries, INC. | Miami | FL | — | ◇ UNVERIFIED |
| SISuhor Industries | Mountain Grove | MO | — | ◇ UNVERIFIED |
| SISuhor Industries | Shreveport | LA | — | ◇ UNVERIFIED |
| SISuhor Industries INC | Clackamas | OR | — | ◇ UNVERIFIED |
| SISuhor Industries, INC. | Saint Joseph | MO | — | ◇ UNVERIFIED |
| SISuhor Industries, INC. | Moberly | MO | — | ◇ UNVERIFIED |
| SISuhor Industries, INC. | Wichita | KS | — | ◇ UNVERIFIED |
| SPSummit Precast Concrete Navasota Facility | Navasota | TX | — | ◇ UNVERIFIED |
