| QCQuad City Drum Recycling CO | Davenport | IA | — | ◇ UNVERIFIED |
| QOQuality One Steel Design | Shelbyville | KY | — | ◇ UNVERIFIED |
| QPQuality Plus Manufacturing INC | Oelwein | IA | — | ◇ UNVERIFIED |
| QPQuality Precast Solutions, LLC | Fort Myers | FL | — | ◇ UNVERIFIED |
| QFQuicksteel Fab INC | Johnston | IA | — | ◇ UNVERIFIED |
| QAQuikrete - Arizona Plant | Buckeye | AZ | — | ◇ UNVERIFIED |
| QCQuikrete - Carolina Plant | West Columbia | SC | — | ◇ UNVERIFIED |
| QCQuikrete - Cleveland, Oh Plant | Ravenna | OH | — | ◇ UNVERIFIED |
| QPQuikrete - Pensacola, Fl Plant | Milton | FL | — | ◇ UNVERIFIED |
| QPQuikrete - Pounding Mill | Pounding Mill | VA | — | ◇ UNVERIFIED |
| QSQuikrete - Salt Lake City, Ut Plant | Salt Lake City | UT | — | ◇ UNVERIFIED |
| QSQuikrete - Sun Valley, Ca Plant | Sun Valley | CA | — | ◇ UNVERIFIED |
| QWQuikrete Wisconsin INC | Sussex | WI | — | ◇ UNVERIFIED |
| QJQuincy Joist Company | Quincy | FL | — | ◇ UNVERIFIED |
| RCRalph Clayton & Sons-jpc Hamilton LLC | Trenton | NJ | — | ◇ UNVERIFIED |
| RMRam Machine Tooling INC | Picayune | MS | — | ◇ UNVERIFIED |
| RHRanch Hand Beeville | Beeville | TX | — | ◇ UNVERIFIED |
| RFRanco Fertiservice INC | Sioux Rapids | IA | — | ◇ UNVERIFIED |
| RCRankin Construction and Septic Tank Service, L.l.c. | Arab | AL | — | ◇ UNVERIFIED |
| RIRatliff Industries | Lumberton | TX | — | ◇ UNVERIFIED |
| RIRayes Inc, Dba Wheelchairs of Kansas | Hays | KS | — | ◇ UNVERIFIED |
| RMReady Mix Usa,llc | Birmingham | AL | — | ◇ UNVERIFIED |
| RCRecycle City INC | Clifton City | NJ | — | ◇ UNVERIFIED |
| RSRedi Services LLC - Metal Parts Coating | Platteville | CO | — | ◇ UNVERIFIED |
| RCReece Construction Company | Arlington | WA | — | ◇ UNVERIFIED |
| RSResteel Supply Company, INC. | Warwick | RI | — | ◇ UNVERIFIED |
| RVRex Vault & Mausoleum Service INC | Newton | IL | — | ◇ UNVERIFIED |
| RGR G Applegate Steel Company Incorporated | Saratoga | IN | — | ◇ UNVERIFIED |
| RCRialto Concrete Products INC | Rialto | CA | — | ◇ UNVERIFIED |
| RSRichardson Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| RPRichmond Pressed Metal Works, INC | Richmond | VA | — | ◇ UNVERIFIED |
| RMRidge Mfg CORP | Rockaway | NJ | — | ◇ UNVERIFIED |
| RCRimpull Corporation (stormwater) | Olathe | KS | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit | Denver | CO | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit- Frederick | Frederick | MD | — | ◇ UNVERIFIED |
| RTRipon Truck Repair & Equipment, LLC | Pickett | WI | — | ◇ UNVERIFIED |
| RARippel Architectural Metals INC | Chicago | IL | — | ◇ UNVERIFIED |
| RSRoane Steel Corporation | Rockwood | TN | — | ◇ UNVERIFIED |
| RCRoberts Concrete Products | Roberts | WI | — | ◇ UNVERIFIED |
| RCRock-tred CORP | Skokie | IL | — | ◇ UNVERIFIED |
| RMRocky Mountain Metals INC | Raton | NM | — | ◇ UNVERIFIED |
| RMRocky Mountain Orthodontic, INC. | Denver | CO | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestress LLC (structural Plant) | Denver | CO | — | ◇ UNVERIFIED |
| RCRocla Concrete Tie Incorporated | Denver | CO | — | ◇ UNVERIFIED |
| RIRohn Industries INC | Bessemer | AL | — | ◇ UNVERIFIED |
| RVRoland Vaults, LTD (former State Mfg) | Norfolk | VA | — | ◇ UNVERIFIED |
| RLRoot Lowell Mfg CO | Lowell | MI | — | ◇ UNVERIFIED |
| RCRoseville Crushed Concrete | Roseville | MI | — | ◇ UNVERIFIED |
| RCRoskamp Champion | Waterloo | IA | — | ◇ UNVERIFIED |
| RSRossin Steel INC | San Diego | CA | — | ◇ UNVERIFIED |
| RMRoto Mix LLC | Hoisington | KS | — | ◇ UNVERIFIED |
| RIRoura Iron Works INC | Holly Springs | MS | — | ◇ UNVERIFIED |
| RMRoura Material Handling INC | Holly Springs | MS | — | ◇ UNVERIFIED |
| RRR & R Equipment Repair | Flatwoods | WV | — | ◇ UNVERIFIED |
| RSRule Steel | Caldwell | ID | — | ◇ UNVERIFIED |
| RHRwe Holding CO | New Castle | PA | — | ◇ UNVERIFIED |
| SISabre Industries | Alvarado | TX | — | ◇ UNVERIFIED |
| SMSafe Manufacturing Facility | Provo | UT | — | ◇ UNVERIFIED |
| SISalford INC | Osceola | IA | — | ◇ UNVERIFIED |
| SCSannipoli CORP | Menifee | CA | — | ◇ UNVERIFIED |
| SLSchlage Lock Company | San Francisco | CA | — | ◇ UNVERIFIED |
 Schuff Steel - Atlantic, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| Schuff Steel Gulf Coast | Humble | TX | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix Llc-hobbs Rd | Denton | MD | — | ◇ UNVERIFIED |
| SPScio Packaging Company | Scio | OH | — | ◇ UNVERIFIED |
| S1Sears 1163 | Burlington | MA | — | ◇ UNVERIFIED |
| SSeatech | Belle Chasse | LA | — | ◇ UNVERIFIED |
| SDSecurity Door Controls | Camarillo | CA | — | ◇ UNVERIFIED |
| SCSelvage Concrete Products, INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SISemco Incorporated Chillicothe | Chillicothe | MO | — | ◇ UNVERIFIED |
| SMSeminole Machine & Welding, INC. | Largo | FL | — | ◇ UNVERIFIED |
| SMSentry Metal Blast INC | Niagara Falls | NY | — | ◇ UNVERIFIED |
| SIService Iron Works-s Lyon | South Lyon | MI | — | ◇ UNVERIFIED |
| SSShannon Street Pre-cast Facility | Chesapeake | VA | — | ◇ UNVERIFIED |
| SAShaw App Tubeline | New Brunswick | NJ | — | ◇ UNVERIFIED |
| SPShaw Process Fabricators | West Monroe | LA | — | ◇ UNVERIFIED |
| SSShaw Sss Fabricators | Addis | LA | — | ◇ UNVERIFIED |
| SCShea Concrete Products - Rochester | Rochester | MA | — | ◇ UNVERIFIED |
| SSShelby Steel LLC | Pell City | AL | — | ◇ UNVERIFIED |
| SSShelco Steel Works INC | South Holland | IL | — | ◇ UNVERIFIED |
| STSheyenne Tooling & Mfg CO | Cooperstown | ND | — | ◇ UNVERIFIED |
| SSShoreline Steel South | Paducah | KY | — | ◇ UNVERIFIED |
| SMShugart Manufacturing | Chester | SC | — | ◇ UNVERIFIED |
| SASiag Aerisyn LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| SLSic Lazaro US INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SFSi Funeral Services | Shreveport | LA | — | ◇ UNVERIFIED |
| SCSika Corporation | Conyers | GA | — | ◇ UNVERIFIED |
| SSSilver Star Manufacturing LLC | Brainerd | MN | — | ◇ UNVERIFIED |
| SVSimerly Vaults, INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| SCSix C Fabrication INC | Winnfield | LA | — | ◇ UNVERIFIED |
| SSSkyline Steel | Newton | IL | — | ◇ UNVERIFIED |
| SSmf | Minonk | IL | — | ◇ UNVERIFIED |
| SJSmi Joist Sc | Eastover | SC | — | ◇ UNVERIFIED |
| SSSmi Steel Fabricators, INC. Dba Cmc Rebar-orlando | Kissimmee | FL | — | ◇ UNVERIFIED |
| SCSmith - Carolina Corporation | Reidsville | NC | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete | Lewisburg | TN | — | ◇ UNVERIFIED |
| SISoelzer, INC Dba Firestone Fabricators | Signal Hill | CA | — | ◇ UNVERIFIED |
| STSolar Turbines Turbofab Facility | Channelview | TX | — | ◇ UNVERIFIED |
| SASousa and Demayo INC | North Attleboro | MA | — | ◇ UNVERIFIED |
| SCSoutheastern Concrete Products of N.c. L | Statesville | NC | — | ◇ UNVERIFIED |
