| SSSchultz & Sons Salvage INC | Denton | MD | — | ◇ UNVERIFIED |
| SCSchuur Concrete LLC | Chandler | MN | — | ◇ UNVERIFIED |
| SIScurlock Industries of Springfield-springfiled | Springfield | MO | — | ◇ UNVERIFIED |
| SCSd Concrete Pumping INC | Santee | CA | — | ◇ UNVERIFIED |
| SISearing Ind | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| SFSefi Fabricators; IMC Teddy; Bayone Stainless Products | Amityville | NY | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service INC | Madison | AL | — | ◇ UNVERIFIED |
| SCSequatchie Concrete Service, Inc-closed | Nashville | TN | — | ◇ UNVERIFIED |
| SCSesser Concrete Products CO | Sesser | IL | — | ◇ UNVERIFIED |
| SBSeymore Bros, INC. | Altoona | PA | — | ◇ UNVERIFIED |
| SBShaffer Block & Concrete Products | Somerset | PA | — | ◇ UNVERIFIED |
| SPShawcor Pipe Protection LLC. | Fontana | CA | — | ◇ UNVERIFIED |
| SSSheffield Steel Products INC | Macedonia | OH | — | ◇ UNVERIFIED |
 Sherman Industries,inc. | Birmingham | AL | — | ◇ UNVERIFIED |
| SMShieldalloy Metallurgical | Newfield | NJ | — | ◇ UNVERIFIED |
| SRShipping Rail Red Line | Blytheville | AR | — | ◇ UNVERIFIED |
| SCSierra Construction, INC. | Channelview | TX | — | ◇ UNVERIFIED |
| SDSigma DG Corporation Inc. | Vancouver | WA | — | ◇ UNVERIFIED |
| SCSilver Creek Stoneworks INC | Rochester | MN | — | ◇ UNVERIFIED |
| SSSims Stone CO. of Georgia, LLC | Woodbury | GA | — | ◇ UNVERIFIED |
| S3Skanska - 3 Mile Bridge Pre-cast Facility | Pensacola | FL | — | ◇ UNVERIFIED |
 Skyline Steel CORP | Brooklyn | NY | — | ◇ UNVERIFIED |
| SLSlater Lemont CORP | Lemont | IL | — | ◇ UNVERIFIED |
| SSSmi Steel Arkansas (dba Cmc Steel Ar) | Magnolia | AR | — | ◇ UNVERIFIED |
| SMSms Mill Services LLC Contractor of Ace | Burns Harbor | IN | — | ◇ UNVERIFIED |
| SMSnl-iov Montclair Owner LLC | Montclair | CA | — | ◇ UNVERIFIED |
| SBSnyder Brick and Block | Columbus | OH | — | ◇ UNVERIFIED |
| SBSnyder Brick & Block | Dayton | OH | — | ◇ UNVERIFIED |
| SISolsil Incorporated (0684000225) | Beverly | OH | — | ◇ UNVERIFIED |
| SBSouthern Block Company | Warsaw | NC | — | ◇ UNVERIFIED |
| SCSouthern Concrete Materials, INC Dba Charlotte Blo | Charlotte | NC | — | ◇ UNVERIFIED |
| SPSouthern Perfection Fabrication Holdings, INC. | Byron | GA | — | ◇ UNVERIFIED |
| SPSouthern Products | Sardis | MS | — | ◇ UNVERIFIED |
| SSSouthern Star Steel Services LLC | Lorena | TX | — | ◇ UNVERIFIED |
| SSSouthern Steel Fabricators | Metairie | LA | — | ◇ UNVERIFIED |
| SSSouthern Steel Products CO | Clarksburg | WV | — | ◇ UNVERIFIED |
| SMSouthwind Milling Company, LLC | Pine Bluff | AR | — | ◇ UNVERIFIED |
| SCSpeer Concrete, INC. | Carthage | NC | — | ◇ UNVERIFIED |
| SMSpg Mechanical | Pocatello | ID | — | ◇ UNVERIFIED |
| SCSpringfield Concrete Block & Brick, INC. | Springfield | OH | — | ◇ UNVERIFIED |
| SCSrm Concrete, Llc, Concrete Block Plant #911 | Saint Paris | OH | — | ◇ UNVERIFIED |
| SPSrm Plant 14120 Blue Wing | San Antonio | TX | — | ◇ UNVERIFIED |
| SSS & S Custom Iron Works Llc | Redmond | WA | — | ◇ UNVERIFIED |
| SSStaffing Services, INC. | Lincoln | NE | — | ◇ UNVERIFIED |
| SSStainless Steel Tanks, INC. | Saint Mary | MO | — | ◇ UNVERIFIED |
| SBStandard Block Company, Inc. | Newnan | GA | — | ◇ UNVERIFIED |
| SSStandard Supply CO | Maysville | KY | — | ◇ UNVERIFIED |
| SRState Road Cement Block | Dartmouth | MA | — | ◇ UNVERIFIED |
| SSState Steel of South Dakota, INC. | Sioux Falls | SD | — | ◇ UNVERIFIED |
| SSStation Steel Services, Inc | Milford | PA | — | ◇ UNVERIFIED |
| SMStavola Materials Oldwick Quarry | Oldwick | NJ | — | ◇ UNVERIFIED |
| SDSteel Dynamics, INC. | Lake City | FL | — | ◇ UNVERIFIED |
| SDSteel Dynamics, INC. (sdi), Structural | Columbia City | IN | — | ◇ UNVERIFIED |
| SDSteel Dynamics, INC. - Swva, INC. | Huntington | WV | — | ◇ UNVERIFIED |
| SRSteel Resources Unlimited, INC. | Miami | FL | — | ◇ UNVERIFIED |
| SRSteel Resources Unlimited, INC. | Miramar | FL | — | ◇ UNVERIFIED |
| STSteel Technology & Design, INC. | Lakeland | FL | — | ◇ UNVERIFIED |
| SSSterling Steel CO LLC | Sterling | IL | — | ◇ UNVERIFIED |
| SSSterling Steel Fabrications INC | West Palm Beach | FL | — | ◇ UNVERIFIED |
| SHSt. Henry Tile Co., INC. | Greenville | OH | — | ◇ UNVERIFIED |
| SSStockman Stoneworks* | Jefferson City | MO | — | ◇ UNVERIFIED |
| SPSuncoast Projects, LLC | Groveland | FL | — | ◇ UNVERIFIED |
| STSuncoast Tampa Bay Block Turkey Creek Facility | Plant City | FL | — | ◇ UNVERIFIED |
| SGSuncoke Gpi LLC | Granite City | IL | — | ◇ UNVERIFIED |
| SCSuncore Construction & Materials, INC. -st. George Masonry | Saint George | UT | — | ◇ UNVERIFIED |
| SMSuncore Masonry Bluffdale Plant | Riverton | UT | — | ◇ UNVERIFIED |
| SCSuperior Concrete Block Company | Mankato | MN | — | ◇ UNVERIFIED |
| SCSuperior Concrete Fence of Texas, Inc. | Euless | TX | — | ◇ UNVERIFIED |
| SBSuperlite Block | Needles | CA | — | ◇ UNVERIFIED |
| SPSuperock Products, LLC | Childersburg | AL | — | ◇ UNVERIFIED |
| SCSupreme Concrete Block Incorporated | Leesburg | VA | — | ◇ UNVERIFIED |
| SISymmco Inc/sykesville | Sykesville | PA | — | ◇ UNVERIFIED |
| TTamco | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| TCTankersley Concrete Company INC. | Lewisburg | TN | — | ◇ UNVERIFIED |
| TSTarpon Springs Block Plant | Tarpon Springs | FL | — | ◇ UNVERIFIED |
| TBTcc Borgert | Saint Joseph | MN | — | ◇ UNVERIFIED |
| TMTcc Materials Companies | Mendota Heights | MN | — | ◇ UNVERIFIED |
| THTDN Holdings, LLC | Haines City | FL | — | ◇ UNVERIFIED |
| TITecho-bloc Incorporated | Pen Argyl | PA | — | ◇ UNVERIFIED |
| TMTecho-bloc Midwest CORP. | Rock Island | IL | — | ◇ UNVERIFIED |
| TCTejas Casing | Houston | TX | — | ◇ UNVERIFIED |
| TATeledyne Adams | Union | NJ | — | ◇ UNVERIFIED |
| THTerre Hill Silo Company INC | Terre Hill | PA | — | ◇ UNVERIFIED |
| TFTest Facility 69 Revised | Fort Wayne | IN | — | ◇ UNVERIFIED |
| TSTexas Steel Tech LLC | Weatherford | TX | — | ◇ UNVERIFIED |
| TWTexas Wheel Repair Express 360 LLC | Dallas | TX | — | ◇ UNVERIFIED |
| T2The 291 Cpw Condominium | New York | NY | — | ◇ UNVERIFIED |
| TCThe Carlstar Group LLC | Ontario | CA | — | ◇ UNVERIFIED |
| TFThe Fagenstrom CO | Great Falls | MT | — | ◇ UNVERIFIED |
| THThe Herrick Corporation | San Bernardino | CA | — | ◇ UNVERIFIED |
| TIThe Iron Works LTD. | Des Moines | IA | — | ◇ UNVERIFIED |
| TLThe Lane Construction Crafton | Pittsburgh, Pa | PA | — | ◇ UNVERIFIED |
| TQThe Quikrete Companies | San Diego | CA | — | ◇ UNVERIFIED |
| TTThe Timken Company | Canton | OH | — | ◇ UNVERIFIED |
| TTThe Timken Steel Corporation | Canton | OH | — | ◇ UNVERIFIED |
| TTThe Timkensteel Corporation | Canton | OH | — | ◇ UNVERIFIED |
| TTThe Turner Company | Rhome | TX | — | ◇ UNVERIFIED |
| TPTheut Prod INC | Romeo | MI | — | ◇ UNVERIFIED |
| TWThe Wilmington Iron and Metal Company, Inc. | Wilmington | OH | — | ◇ UNVERIFIED |
| TBTiffany Brick - Ogden Plant | Schertz | TX | — | ◇ UNVERIFIED |
