| CACalumet Armature & Electric LLC | Riverdale | IL | — | ◇ UNVERIFIED |
| CBCameron Bridge Works LLC | Elmira | NY | — | ◇ UNVERIFIED |
| CRCameron Rig Solutions - River Plant | Vicksburg | MS | — | ◇ UNVERIFIED |
| CICamin Industries INC | Brooklyn | NY | — | ◇ UNVERIFIED |
| CMCanfield Machine & Tool Div | Kingston | NY | — | ◇ UNVERIFIED |
| CFCannon Fabrication INC | Corona | CA | — | ◇ UNVERIFIED |
| CMCanton Manufacturing CORP. | Canton | MI | — | ◇ UNVERIFIED |
| CMCapitol Manufacturing Lansing Facility | Lansing | OH | — | ◇ UNVERIFIED |
| CCaptiveaire | Youngsville | NC | — | ◇ UNVERIFIED |
| CCaptiveaire | Muskogee | OK | — | ◇ UNVERIFIED |
| CCaptiveaire | Bedford | PA | — | ◇ UNVERIFIED |
| CCaptiveaire | Groveland | FL | — | ◇ UNVERIFIED |
| CICarboloy INC | Warren | MI | — | ◇ UNVERIFIED |
| CFCardinal Fab-williamston | Williamston | MI | — | ◇ UNVERIFIED |
| CICardinal Ig Site | Spring Green | WI | — | ◇ UNVERIFIED |
| CRCardinal Rotar | Spring Green | WI | — | ◇ UNVERIFIED |
| CCCareys Construction Company INC | Jackson | MS | — | ◇ UNVERIFIED |
| CPCarpenter & Paterson INC | Saddle Brook Twp | NJ | — | ◇ UNVERIFIED |
| CFCarswell Firman L Mfg CO INC | Kansas City | KS | — | ◇ UNVERIFIED |
| CCCatalina Composites | Garden Grove | CA | — | ◇ UNVERIFIED |
| CGCaterpillar Global Mining | South Milwaukee | WI | — | ◇ UNVERIFIED |
| CICaterpillar INC Seals Metalcasting Facility | Toccoa | GA | — | ◇ UNVERIFIED |
| CPCaterpillar Paving Products INC | New Ulm | MN | — | ◇ UNVERIFIED |
| CBCavo Build Design | Gloucester City | NJ | — | ◇ UNVERIFIED |
| CBC & B Piping,inc. Adamsville | Adamsville | AL | — | ◇ UNVERIFIED |
| CGCcc Group | San Antonio | TX | — | ◇ UNVERIFIED |
| CCC & C Fabrication, LLC | Lanett | AL | — | ◇ UNVERIFIED |
| CCC & C Iron Incorporated | Merrillville | IN | — | ◇ UNVERIFIED |
| CDC & D Welding & Fabrication INC | Jonesville | MI | — | ◇ UNVERIFIED |
| CDCed Dba 3e | Des Moines | IA | — | ◇ UNVERIFIED |
| CMCeh Metal Technologies Longmont Division | Longmont | CO | — | ◇ UNVERIFIED |
| CPCemco Products Site | Everett | WA | — | ◇ UNVERIFIED |
| CICentek INC | Oklahoma City | OK | — | ◇ UNVERIFIED |
| CMCenter Manufacturing Company | Bellevue | OH | — | ◇ UNVERIFIED |
| CACentral Al Fabricators INC | Columbiana | AL | — | ◇ UNVERIFIED |
| CDCentral Denver Iron Works, INC | Denver | CO | — | ◇ UNVERIFIED |
| CFCentral Florida Custom Trailers, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| CCentria | Ambridge | PA | — | ◇ UNVERIFIED |
| CPCentury Parts INC | Torrance | CA | — | ◇ UNVERIFIED |
| CFCertified Fabricators INC | Buena Park | CA | — | ◇ UNVERIFIED |
| CSCgb St Louis Shipyard | Saint Louis | MO | — | ◇ UNVERIFIED |
| CMChampagne Metals | South Charleston | WV | — | ◇ UNVERIFIED |
| CHChampion Home Builders - Arkansas City (w Madison Ave) | Arkansas City | KS | — | ◇ UNVERIFIED |
| CMChancey Metal Products, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
 Chancey Metals LLC Annex | Jacksonville | FL | — | ◇ UNVERIFIED |
 Chief Industries INC Chief Transportation Products | Omaha | NE | — | ◇ UNVERIFIED |
| CCignys | Saginaw | MI | — | ◇ UNVERIFIED |
| CSCives Steel Company | Winchester | VA | — | ◇ UNVERIFIED |
| CSCives Steel Company, Mid-west Division | Wolcott | IN | — | ◇ UNVERIFIED |
| CRClark Rigging & Rental | Lockport | NY | — | ◇ UNVERIFIED |
| CSClearview Structural Steel Souderton Plt | Souderton | PA | — | ◇ UNVERIFIED |
| CWClear Water Manufacturing | Madison Heights | VA | — | ◇ UNVERIFIED |
| CMCleasby Mfg of Denver | Westminster | CO | — | ◇ UNVERIFIED |
| CPCleveland-cliffs Piedmont | Newton | NC | — | ◇ UNVERIFIED |
| CLC L Rieckhoff CO | Taylor | MI | — | ◇ UNVERIFIED |
| CSC&l Steel | Jacksonville | FL | — | ◇ UNVERIFIED |
| CFClute Facility | Clute | TX | — | ◇ UNVERIFIED |
| 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 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 | Nashville | TN | — | ◇ 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 |
| CWCo-line Welding INC | Sully | IA | — | ◇ UNVERIFIED |
| CICollis INC | Elizabethtown | KY | — | ◇ UNVERIFIED |
| CIColmac Industries Site | Colville | WA | — | ◇ UNVERIFIED |
| CBColorado Bridge & Iron INC | Fruita | CO | — | ◇ UNVERIFIED |
| CCColson Caster Corporation | Jonesboro | AR | — | ◇ UNVERIFIED |
| CBColumbia Business Center Bldg 33 | Vancouver | WA | — | ◇ UNVERIFIED |
| CSColumbia Steel INC | Rialto | CA | — | ◇ UNVERIFIED |
| CFCommercial Fabricators | Bridgeview | IL | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Louisville | KY | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Nashville | TN | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | San Bernardino | CA | — | ◇ UNVERIFIED |
| CSCommercial Sheet Metal | Canton | MA | — | ◇ UNVERIFIED |
| CECommscope, Euless Facility | Euless | TX | — | ◇ UNVERIFIED |
| CSCompx Securityproducts | River Grove | IL | — | ◇ UNVERIFIED |
| CSConnectivity Solutions Mfg Incorporated | Omaha | NE | — | ◇ UNVERIFIED |
| CCConnector Castings INC | Selmer | TN | — | ◇ UNVERIFIED |
| CAConstellium-uacj Abs LLC | Bowling Green | KY | — | ◇ UNVERIFIED |
