| BSBuilders Supply Company | Algood | TN | — | ◇ UNVERIFIED |
| EPExeon Processors LLC | Jonesboro | IN | — | ◇ UNVERIFIED |
| HIHardsteel, INC. | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| NCNorthern Concrete Block of Cortland | Cortland | NY | — | ◇ UNVERIFIED |
| PSPrecast Solutions, INC. | Browns Summit | NC | — | ◇ UNVERIFIED |
| SSS&h Steel Corporation | Pearl | MS | — | ◇ UNVERIFIED |
| TSThe Shaddix Company, INC. | Cullman | AL | — | ◇ UNVERIFIED |
| TCTricast/presfore CORP | Crystal Lake | IL | — | ◇ UNVERIFIED |
| TITubeworks INC. | Riverside | CA | — | ◇ UNVERIFIED |
| WFWestern Fabrication Tech CORP | Valencia | CA | — | ◇ UNVERIFIED |
| 2S2300 S Hwy 97 | Sand Springs | OK | — | ◇ UNVERIFIED |
| 4H40 Hrs, INC | Fremont | CA | — | ◇ UNVERIFIED |
| 4I4d INC | Munger | MI | — | ◇ UNVERIFIED |
| 5L55 Leone Lane NY, LLC | Chester | NY | — | ◇ UNVERIFIED |
| 8W82 Washington Associates LLC | New York | NY | — | ◇ UNVERIFIED |
| 8R8615 Robben Road, LLC | Dixon | CA | — | ◇ UNVERIFIED |
| 9F912 Fifth Avenue CORP | New York | NY | — | ◇ UNVERIFIED |
| ABA-1 Block Corporation - Tampa Facility | Tampa | FL | — | ◇ UNVERIFIED |
| AOA1 Ornamental Ironworks, INC. | Fresno | CA | — | ◇ UNVERIFIED |
| AGAaa Galvanizing Chelsea, INC Dba Iazz Chelsea Galvanizing | Chelsea | OK | — | ◇ UNVERIFIED |
| AEAac East LLC | Bennettsville | SC | — | ◇ UNVERIFIED |
| ABAbc Block-jackson | Jackson | MS | — | ◇ UNVERIFIED |
| ABAbc Block Mann Road | Mabelvale | AR | — | ◇ UNVERIFIED |
| ABAbel & Brothers Custom Iron Works | San Marcos | CA | — | ◇ UNVERIFIED |
| ASA.b. Steel Mill, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| AIAccufab, INC. | West Chester | OH | — | ◇ UNVERIFIED |
| AAcker-stone | Chandler | AZ | — | ◇ UNVERIFIED |
| ACA C Krebs Company INC | Louisville | KY | — | ◇ UNVERIFIED |
| ABAcme Block & Brick INC | Corbin (whitley) | KY | — | ◇ UNVERIFIED |
| ABAcme Block & Brick, INC. | Sweetwater | TN | — | ◇ UNVERIFIED |
| ASAcp - St Cloud | Saint Cloud | MN | — | ◇ UNVERIFIED |
| ASAcp - St Joseph | Saint Joseph | MN | — | ◇ UNVERIFIED |
| ACAdams Concrete Products | Burdine | KY | — | ◇ UNVERIFIED |
| APAdams Products CO - Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
| APAdams Products Company - Wilson Block Plant | Wilson | NC | — | ◇ UNVERIFIED |
| ACAdonel Concrete - West Palm Beach | West Palm Beach | FL | — | ◇ UNVERIFIED |
| ADA & D Precast, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| AMA&E Manufacturing, LLC | Spring Lake | MI | — | ◇ UNVERIFIED |
| AFA Finkl & Sons CO | Chicago | IL | — | ◇ UNVERIFIED |
| ASAir Separation Unit Project | Blytheville | AR | — | ◇ UNVERIFIED |
| ACAkj Clairton LLC | Clairton | PA | — | ◇ UNVERIFIED |
| AIAkj Industries INC Contractor of Uss Ga | Gary | IN | — | ◇ UNVERIFIED |
| ABAkron Brick & Block Inc.-akron Brick and Block INC. | Akron | OH | — | ◇ UNVERIFIED |
| ASAk Steel CORP | Dearborn | MI | — | ◇ UNVERIFIED |
| ASAk Steel Corp/butler Works | Butler | PA | — | ◇ UNVERIFIED |
| AMAlabama Metal Industries CORP | Birmingham | AL | — | ◇ UNVERIFIED |
| AFAlcast Foundry INC | Redondo Beach | CA | — | ◇ UNVERIFIED |
| ACAlexandria Concrete CO | Alexandria | MN | — | ◇ UNVERIFIED |
| ASAllan Schaffer | Livermore | CA | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum CORP | Houston | PA | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum Steel Strip Plant | Wallingford | CT | — | ◇ UNVERIFIED |
| ACAlley-cassetty Companies INC Dba Alley-cassetty Br | Murfreesboro | TN | — | ◇ UNVERIFIED |
| ACAllied - Charlottesville | Charlottesville | VA | — | ◇ UNVERIFIED |
| ACAllied Concrete - 2025 Harrisonburg | Harrisonburg | VA | — | ◇ UNVERIFIED |
| ACAllied Concrete Company - Zion | Troy | VA | — | ◇ UNVERIFIED |
| ACAllied Concrete - Culpeper | Culpeper | VA | — | ◇ UNVERIFIED |
| ACAllied Concrete Products LLC - Kingland Reach | Richmond | VA | — | ◇ UNVERIFIED |
| AGAllied - Greene | Ruckersville | VA | — | ◇ UNVERIFIED |
| ALAllied - Louisa | Mineral | VA | — | ◇ UNVERIFIED |
| ARAllied Ready Mix CO - Staunton | Staunton | VA | — | ◇ UNVERIFIED |
| ARAllied Ready Mix CO - Wanesboro | Waynesboro | VA | — | ◇ UNVERIFIED |
| ARAllied -ready Rock | Waynesboro | VA | — | ◇ UNVERIFIED |
| AWAllpoints Warehousing Equipment Company | Tampa | FL | — | ◇ UNVERIFIED |
| ACAmcon Concrete Products, LLC | Saint Joseph | MN | — | ◇ UNVERIFIED |
| ACAmcon Concrete Products LLC - Saint Cloud | Saint Cloud | MN | — | ◇ UNVERIFIED |
| ACAmerican Concrete Products CO | Omaha | NE | — | ◇ UNVERIFIED |
| ACAmerican Concrete Products Ms Inc, Hattiesburg Plant | Hattiesburg | MS | — | ◇ UNVERIFIED |
| ASAmerican Stainless & Alloy Products | Darlington | SC | — | ◇ UNVERIFIED |
| ASAmerican Steel Solutions, LLC | Spring | TX | — | ◇ UNVERIFIED |
 American Wilbert Vault CORP | Chicago | IL | — | ◇ UNVERIFIED |
| AMAmeriti Manufacturing Company | Detroit | MI | — | ◇ UNVERIFIED |
| AHAmeron Hc and D Pipe Div | Kapolei | HI | — | ◇ UNVERIFIED |
| ATAmg Titanium Llc/551 Northgate Cir | New Castle | PA | — | ◇ UNVERIFIED |
| AVAmg Vanadium LLC | Zanesville | OH | — | ◇ UNVERIFIED |
| ACAm/ns Calvert LLC | Calvert | AL | — | ◇ UNVERIFIED |
| ACAm/ns Calvert LLC | Calvert | AL | — | ◇ UNVERIFIED |
| ABAnchor Block CO - Brooklyn Park | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| ABAnchor Block CO - N St Paul | North Saint Paul | MN | — | ◇ UNVERIFIED |
| ACAnchor Concrete Prods. | Phillipsburg | NJ | — | ◇ UNVERIFIED |
| ACAnchor Concrete Products | Winchester | VA | — | ◇ UNVERIFIED |
| ACAnchor Concrete Products | Gainesville | VA | — | ◇ UNVERIFIED |
| ABAngelus Block CO | Bloomington | CA | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Fontana | CA | — | ◇ UNVERIFIED |
| ABAngelus Block Co., INC. | Bakersfield | CA | — | ◇ UNVERIFIED |
| ABAngelus Block Co., INC. - Rialto Block Plant | Bloomington | CA | — | ◇ UNVERIFIED |
| ABAngelus Block Company | Oxnard | CA | — | ◇ UNVERIFIED |
| ABAngelus Block Company INC | Indio | CA | — | ◇ UNVERIFIED |
| ABAngelus Block INC | Orange | CA | — | ◇ UNVERIFIED |
| AAperam | Sterling Heights | MI | — | ◇ UNVERIFIED |
| ASAperam Stainless Services & Solutions | Sterling Heights | MI | — | ◇ UNVERIFIED |
| APApex Powder Coating LLC | Taylor | MI | — | ◇ UNVERIFIED |
| ABAran Bagher | Santa Ana | CA | — | ◇ UNVERIFIED |
| AArcelormittal | Cleveland | OH | — | ◇ UNVERIFIED |
| ACArcelormittal Calvert, LLC | Calvert | AL | — | ◇ UNVERIFIED |
| AMArcelor Mittal/indiana Harbor Long Carbon | East Chicago | IN | — | ◇ UNVERIFIED |
| ACArcerlormittal Cleveland LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| APArchitectural Precast, LLC | Kapolei | HI | — | ◇ UNVERIFIED |
| ACAries Concrete, INC. | Kennesaw | GA | — | ◇ UNVERIFIED |
 Arnold Magnetic Technologies | Marengo | IL | — | ◇ UNVERIFIED |
