| CMC Mayo, INC | Springdale | AR | — | ◇ UNVERIFIED |
| CCCmc Coatings | Waxahachie | TX | — | ◇ UNVERIFIED |
| CCCmc Coating Toltec Steel | Kankakee | IL | — | ◇ UNVERIFIED |
| CJCmc Joist & Deck Iowa | Iowa Falls | IA | — | ◇ UNVERIFIED |
| CRCmc Rebar | Nashville | TN | — | ◇ UNVERIFIED |
| CRCmc Rebar-ga-atlanta | Duluth | GA | — | ◇ UNVERIFIED |
| CRCmc Rebar Muncie North | Muncie | IN | — | ◇ UNVERIFIED |
| CRCmc Rebar-oh-cincinnati | Hamilton | OH | — | ◇ UNVERIFIED |
| CRCmc Rebar - Oklahoma City | Oklahoma City | OK | — | ◇ UNVERIFIED |
| CRCmc Rebar - St. Louis | O Fallon | MO | — | ◇ UNVERIFIED |
| CRCmc Rebar - Wa - Auburn | Auburn | WA | — | ◇ UNVERIFIED |
| CSCmc Southern Post | Brigham City | UT | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators (dba Cmc Rebar) | Melissa | TX | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators, INC | Polo | MO | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators INC (dba Cmc Capitol City Steel) | Buda | TX | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators INC Dba Cmc Capitol Steel | Baton Rouge | LA | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators INC (dba Cmc Rebar) | Waxahachie | TX | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators Incdba Cmc Rebar | Houston | TX | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators INC Dba Cmc Rebar Corpus Christi | Corpus Christi | TX | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators INC Dba Cmc Rebar San Antonio | San Antonio | TX | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators INC (dba Cmc Steel Products) | Hope | AR | — | ◇ UNVERIFIED |
| CSCmc Steel Us, LLC Dba Cmc Rebar | Farmersville | TX | — | ◇ UNVERIFIED |
| CSCmc Sterling Steel | Houston | TX | — | ◇ UNVERIFIED |
| CNCmi New Castle Facility | New Castle | PA | — | ◇ UNVERIFIED |
| CICoastal Industrial Fabrication | Theodore | AL | — | ◇ UNVERIFIED |
| CICoast Iron & Steel CO | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| CMColfor Mfg Machining Div Minerva Operations | Minerva | OH | — | ◇ UNVERIFIED |
| CWCo-line Welding INC | Sully | IA | — | ◇ UNVERIFIED |
| CIColmac Industries Site | Colville | WA | — | ◇ UNVERIFIED |
| CBColorado Bridge & Iron INC | Fruita | CO | — | ◇ UNVERIFIED |
| CWColorado Water Jet Company | Berthoud | CO | — | ◇ UNVERIFIED |
| CSColumbia Steel INC | Rialto | CA | — | ◇ UNVERIFIED |
| CFCommercial Fabricators | Bridgeview | IL | — | ◇ UNVERIFIED |
| CHCommercial Honing CO | Fontana | CA | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | San Bernardino | CA | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Louisville | KY | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Nashville | TN | — | ◇ UNVERIFIED |
| CSCommercial Sheet Metal | Canton | MA | — | ◇ UNVERIFIED |
| CECommscope, Euless Facility | Euless | TX | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing INC | Marion | MT | — | ◇ UNVERIFIED |
| CAConstellium-uacj Abs LLC | Bowling Green | KY | — | ◇ UNVERIFIED |
| CMContainer Management Services | Portland | OR | — | ◇ UNVERIFIED |
 Contech Engineered Solutions LLC | Fort Pierce | FL | — | ◇ UNVERIFIED |
| Contech Engineered Solutions LLC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| CBContinental Bridge | Alexandria | MN | — | ◇ UNVERIFIED |
| CPControlled Precision Machining INC | Farmington Hills | MI | — | ◇ UNVERIFIED |
| CConxtech | Woodland | CA | — | ◇ UNVERIFIED |
| CIConxtech INC | Hayward | CA | — | ◇ UNVERIFIED |
| CBCooper B-line | Aurora | CO | — | ◇ UNVERIFIED |
| CBCooper B-line INC | Troy | IL | — | ◇ UNVERIFIED |
| CBCooper B-line INC | Sherman | TX | — | ◇ UNVERIFIED |
| CBCooper B-line, INC. | Reno | NV | — | ◇ UNVERIFIED |
| CSCooper's Steel Fabricators | Shelbyville | TN | — | ◇ UNVERIFIED |
| CTCooper Tank-203-205 Moore St | Brooklyn | NY | — | ◇ UNVERIFIED |
| CACore and Main LP | Renton | WA | — | ◇ UNVERIFIED |
| CRCornerstone Rack and Tooling, LLC | Lawrenceburg | TN | — | ◇ UNVERIFIED |
| CICourion Industries | Saint Louis | MO | — | ◇ UNVERIFIED |
| CBCouvrette Building Systems | Salem | VA | — | ◇ UNVERIFIED |
| CRCovanta Resource Recovery Facility | Pittsfield | MA | — | ◇ UNVERIFIED |
| CCowelco | Long Beach | CA | — | ◇ UNVERIFIED |
| CICraftsmen Industries Inc-clay St Plant | Saint Charles | MO | — | ◇ UNVERIFIED |
| CTCraig Technologies | Seaford | DE | — | ◇ UNVERIFIED |
| CDCreative Display Panels | Newbury Park | CA | — | ◇ UNVERIFIED |
 Creative Machining Technolgy | Corona | CA | — | ◇ UNVERIFIED |
| CMCreative Metalcraft CORP. | Hiram | GA | — | ◇ UNVERIFIED |
 Crown Products Company INC | Jacksonville | FL | — | ◇ UNVERIFIED |
| CRC & R Sales Inc/dba Kretzschmar Steel | Colton | CA | — | ◇ UNVERIFIED |
| CSCrystal Steel Memphis, LLC | Gallaway | TN | — | ◇ UNVERIFIED |
| CPC&s Plating & Machine | Trenton | GA | — | ◇ UNVERIFIED |
| CCCst Covers | Conroe | TX | — | ◇ UNVERIFIED |
| CDCtp, Division of Tue Processing | Indianapolis | IN | — | ◇ UNVERIFIED |
| CDCtp Div Nelson St | Indianapolis | IN | — | ◇ UNVERIFIED |
| CSCtp Sheetmetal | Indianapolis | IN | — | ◇ UNVERIFIED |
| CPCurbs Plus INC | El Dorado | KS | — | ◇ UNVERIFIED |
| CRCurrent River Die Sinking | Doniphan | MO | — | ◇ UNVERIFIED |
| CACustom Alloy Corporation | Califon | NJ | — | ◇ UNVERIFIED |
| CCCustom Container Valley Can LLC | Hadley | PA | — | ◇ UNVERIFIED |
| CFCustom Fab Dba U.s. Pipe Fabrication | Phoenix | AZ | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators INC | Richmond | VA | — | ◇ UNVERIFIED |
| CMCustom Metals of Virginia | Manassas | VA | — | ◇ UNVERIFIED |
| CFC&w Fabricators | Gardner | MA | — | ◇ UNVERIFIED |
| CMCygnus Mfg CO LLC | Saxonburg | PA | — | ◇ UNVERIFIED |
| DIDaman Industrial Services | East Brady | PA | — | ◇ UNVERIFIED |
| DSDana Sealing Products, LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| DADanos and Curole Marine Contractors, LLC | Larose | LA | — | ◇ UNVERIFIED |
| DIDanser INC | Parkersburg | WV | — | ◇ UNVERIFIED |
| DSDanville Steel | Danville | IL | — | ◇ UNVERIFIED |
| DMDarby Metalworks | Anderson | SC | — | ◇ UNVERIFIED |
| DHDave Hunter CO LLC | Albany | OR | — | ◇ UNVERIFIED |
| DBDavis Boat Works INC | Newport News | VA | — | ◇ UNVERIFIED |
| DIDavis Iron Works Operations | Hewitt | TX | — | ◇ UNVERIFIED |
| DTDavis Trailer & Truck Equipment | Little Rock | AR | — | ◇ UNVERIFIED |
 Dayton Superior CORP | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| Dayton Superior Corporation | Birmingham | AL | — | ◇ UNVERIFIED |
| DSDecimet Sales INC | Rogers | MN | — | ◇ UNVERIFIED |
| DWDeck West INC. | Stockton | CA | — | ◇ UNVERIFIED |
| DSDelta Steel Company INC | Jackson | MS | — | ◇ UNVERIFIED |
| DWDerby Welding and Machine Co., INC. | Louisville | KY | — | ◇ UNVERIFIED |
| DMDesigner Metal Works and Lighting, INC. | Ontario | CA | — | ◇ UNVERIFIED |
| DFDesign Form INC | Stanton | CA | — | ◇ UNVERIFIED |
