| CACmp Advanced Mechanical Solutions | Binghamton | NY | — | ◇ UNVERIFIED |
| CSC.m. Steel, INC. | Charlotte | NC | — | ◇ UNVERIFIED |
| CMCnc Metalcraft LLC | Hopkins | MN | — | ◇ UNVERIFIED |
 Coalfield Services - Old Shop | Wytheville | VA | — | ◇ UNVERIFIED |
| CICoal Iron LLC | Anderson | IN | — | ◇ UNVERIFIED |
| CICoal Iron LLC | Anderson | IN | — | ◇ UNVERIFIED |
| CCCoastal Construction and Lumber Company, INC | Yuba City | CA | — | ◇ UNVERIFIED |
| CICoastal Industrial Fabrication | Theodore | AL | — | ◇ UNVERIFIED |
| CICoast Iron & Steel CO | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| CICobb Industrial INC | Oak Brook | IL | — | ◇ UNVERIFIED |
| CICobb Industrial, INC. | Harahan | LA | — | ◇ UNVERIFIED |
| CICobb Industrial, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| CCCobblestone Centre Lc | Oasis | UT | — | ◇ UNVERIFIED |
| CSCochrane Steel Industries, INC. | Monroe | NC | — | ◇ UNVERIFIED |
| CCCofab Corporation | Vallejo | CA | — | ◇ UNVERIFIED |
| CCCoi CO | Chicago | IL | — | ◇ UNVERIFIED |
| CMCollier Metals, LLC. | Atlanta | GA | — | ◇ UNVERIFIED |
| CMCollier Metal Works LLC | Blackfoot | ID | — | ◇ UNVERIFIED |
| CCCollision Care at Mosers | Glenside | PA | — | ◇ UNVERIFIED |
| CWColonial Wagon & Wheel | Lancaster | OH | — | ◇ UNVERIFIED |
| CBColorado Bridge & Iron INC | Fruita | CO | — | ◇ UNVERIFIED |
| CSColumbia Steel INC | Rialto | CA | — | ◇ UNVERIFIED |
| CTColumbia Tackle INC | Portland | OR | — | ◇ UNVERIFIED |
| CDColumbus Design & Manufacturing, LLC | Columbus | OH | — | ◇ UNVERIFIED |
| CCom | San Fernando | CA | — | ◇ UNVERIFIED |
| CCComet Company | Addison | IL | — | ◇ UNVERIFIED |
| CFCommercial Fabricating and Engineering, Inc. | Wixom | MI | — | ◇ UNVERIFIED |
| CFCommercial Fabricating & Engineering INC | Highland | MI | — | ◇ UNVERIFIED |
| CFCommercial Fabricators | Bridgeview | IL | — | ◇ UNVERIFIED |
| CMCommercial Metal Company | Fredericksburg | VA | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Houston | TX | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Brigham City | UT | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | College Station | TX | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Harlingen | TX | — | ◇ UNVERIFIED |
| CWCommercial Warehouse | Shelbyville | TN | — | ◇ UNVERIFIED |
| CCComplete Construction, INC. | Farmingdale | NY | — | ◇ UNVERIFIED |
| CFComplete Fabrications INC | San Francisco | CA | — | ◇ UNVERIFIED |
| CMComplete Metal Fabrication, LLC | Jupiter | FL | — | ◇ UNVERIFIED |
| CFComplex Fabricators, Inc. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CPComposite Plastic Systems | Santa Maria | CA | — | ◇ UNVERIFIED |
| CSCompo Steel Products, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| CSCompton Steel CO INC | Compton | CA | — | ◇ UNVERIFIED |
| CMComres Mfg. | Tampa | FL | — | ◇ UNVERIFIED |
| CMConant Metal & Light, INC. | Burlington | VT | — | ◇ UNVERIFIED |
| CWConatser Welding and Machine, LLC | King City | CA | — | ◇ UNVERIFIED |
| CIConcord Iron Works INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| CIConcord Iron Works INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| CWCon-fab Welding INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| CMConnecticut Metalworks, LLC | Newington | CT | — | ◇ UNVERIFIED |
| CAConover Area Fabricators Inc | Coatsburg | IL | — | ◇ UNVERIFIED |
| CSConshohocken Steel Products, INC. | Ambler | PA | — | ◇ UNVERIFIED |
| CFConsol Fabricators CORP | Sun Valley | CA | — | ◇ UNVERIFIED |
| CFConsolidated Fabrication and Construction, INC. | Wilmington | DE | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators | Auburn | MA | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators CORP | Galt | CA | — | ◇ UNVERIFIED |
| CMConsolidated Metal Builders | Clovis | NM | — | ◇ UNVERIFIED |
| CSConsolidated Southern Industries | Aiken | SC | — | ◇ UNVERIFIED |
| CSConsolidated Southern Industries | Anderson | SC | — | ◇ UNVERIFIED |
| CSConsolidated Southern Industries INC | Anderson | SC | — | ◇ UNVERIFIED |
| CSConsolidated Steel Services, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| CHConstr Hot Line & Mgmt Partners INC Dba Champ Stee | Santa Ana | CA | — | ◇ UNVERIFIED |
| CMConstruction Materials INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| CMConstruction Materials, INC. | Cedar Rapids | IA | — | ◇ UNVERIFIED |
| CMConstruction Materials Inc/cmi Coating Group INC Dba Industrial Painting Service | Hugo | MN | — | ◇ UNVERIFIED |
| CPConstruction Products Dist LLC | Des Moines | IA | — | ◇ UNVERIFIED |
| CSConstruction Specialties INC | Hughesville | PA | — | ◇ UNVERIFIED |
| CSConstruction Specialties INC | Montgomery | PA | — | ◇ UNVERIFIED |
| CSConstruction Specialties INC | Muncy | PA | — | ◇ UNVERIFIED |
| CSConstruction Systems INC | Maple Plain | MN | — | ◇ UNVERIFIED |
| CEContainer Exchange Internation | Gardena | CA | — | ◇ UNVERIFIED |
| CMContainer Management Services | Portland | OR | — | ◇ UNVERIFIED |
 Container Research CORP | Glen Riddle | PA | — | ◇ UNVERIFIED |
| Container Research Corp/lenni Rockdale | Glen Riddle | PA | — | ◇ UNVERIFIED |
| CEContech Engineered Solution LLC | Orchard Park | NY | — | ◇ UNVERIFIED |
 Contech Engineered Solutions | Wahoo | NE | — | ◇ UNVERIFIED |
| Contech Engineered Solutions LLC | Mitchell | IN | — | ◇ UNVERIFIED |
| CBContinental Bridge | Alexandria | MN | — | ◇ UNVERIFIED |
| CTContinental Tool Company INC | Redwood City | CA | — | ◇ UNVERIFIED |
| CMContour Metals CORP | South El Monte | CA | — | ◇ UNVERIFIED |
| CFContract Fabricators, INC | De Kalb | MS | — | ◇ UNVERIFIED |
| CFContract Fabricators, Inc, Iuka Facility | Iuka | MS | — | ◇ UNVERIFIED |
| CIContract Industrial Tooling | Richmond | IN | — | ◇ UNVERIFIED |
| CMContractors Materials Company | Cincinnati | OH | — | ◇ UNVERIFIED |
| CMContractors Materials LLC | New Castle | DE | — | ◇ UNVERIFIED |
| CWContractor's Welding, INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| CSContract Services Corporation of America | Raytown | MO | — | ◇ UNVERIFIED |
| CConxtech | Woodland | CA | — | ◇ UNVERIFIED |
| CACool-vue Aluminum, INC. | Kenner | LA | — | ◇ UNVERIFIED |
| CBCooper B-line INC | Troy | IL | — | ◇ UNVERIFIED |
| CPCooper Power Systems | Waukesha | WI | — | ◇ UNVERIFIED |
| CSCooper's Steel Fabricators INC | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCooper Steel of Virginia | Lynchburg | VA | — | ◇ UNVERIFIED |
| CSCooper Steel Site Development | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCooper Steel Site Development | Shelbyville | TN | — | ◇ UNVERIFIED |
| CWCooper Wilkins Welding and Mac | Mobile | AL | — | ◇ UNVERIFIED |
| CSCoosa Steel Corporation | Rome | GA | — | ◇ UNVERIFIED |
| CVCoosa Valley Steel, INC. | Attalla | AL | — | ◇ UNVERIFIED |
| CICoral Industries, INC. (northport) | Northport | AL | — | ◇ UNVERIFIED |
| CICorchran INC | Waseca | MN | — | ◇ UNVERIFIED |
| CBCore Brace LLC | West Jordan | UT | — | ◇ UNVERIFIED |
