| CCCajon CO Aurora | Aurora | OH | — | ◇ UNVERIFIED |
| CACalumet Armature & Electric LLC | Riverdale | IL | — | ◇ UNVERIFIED |
| CCCamden Casting Center INC | Camden | TN | — | ◇ UNVERIFIED |
| CFCampbell Foundry Company | Harrison | NJ | — | ◇ UNVERIFIED |
| CMCanton Manufacturing CORP. | Canton | MI | — | ◇ UNVERIFIED |
| CICarboloy INC | Warren | MI | — | ◇ UNVERIFIED |
| CICardinal Ig Site | Spring Green | WI | — | ◇ UNVERIFIED |
| CRCardinal Rotar | Spring Green | WI | — | ◇ UNVERIFIED |
| CICarmack INC Dba Phenix Foundry | Phenix City | AL | — | ◇ UNVERIFIED |
| CPCarpenter & Paterson INC | Saddle Brook Twp | NJ | — | ◇ UNVERIFIED |
| CICastalloy INC Walterboro | Walterboro | SC | — | ◇ UNVERIFIED |
| CTCast-fab Technologies, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| CUCastings USA INC | New Philadelphia | OH | — | ◇ UNVERIFIED |
| CPCastwell Products INC | Skokie | IL | — | ◇ UNVERIFIED |
| CICaterpillar INC Seals Metalcasting Facility | Toccoa | GA | — | ◇ UNVERIFIED |
| CMC&c Machining INC | Centerville | IA | — | ◇ UNVERIFIED |
| CDC & D Welding & Fabrication INC | Jonesville | MI | — | ◇ UNVERIFIED |
| CRCenterless Rebuilders INC | New Haven | MI | — | ◇ UNVERIFIED |
| CMCenter Manufacturing Company | Bellevue | OH | — | ◇ UNVERIFIED |
| CFCertified Fabricators INC | Buena Park | CA | — | ◇ UNVERIFIED |
| CMChancey Metal Products, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
 Chancey Metals LLC Annex | Jacksonville | FL | — | ◇ UNVERIFIED |
| CFCharlette Foundry | Blackstone | MA | — | ◇ UNVERIFIED |
| CVChem Valley Machine | Nitro | WV | — | ◇ UNVERIFIED |
 Chief Industries INC Chief Transportation Products | Omaha | NE | — | ◇ UNVERIFIED |
| CLChrysler, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| CMCigas Machine Shop INC | Coatesville | PA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop, INC. | Coatesville | PA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop, INC. | Pottstown | PA | — | ◇ UNVERIFIED |
| CCignys | Saginaw | MI | — | ◇ UNVERIFIED |
| CACitation Aluminum, LLC | Bay Minette | AL | — | ◇ UNVERIFIED |
| CAClark Automatic | Rosedale | MD | — | ◇ UNVERIFIED |
| CMClark Metal Prod CO | Blairsville | PA | — | ◇ UNVERIFIED |
| CMClearfield Mach Co/3rd & Everett Streets | Clearfield | PA | — | ◇ UNVERIFIED |
| CPCleveland-cliffs Piedmont | Newton | NC | — | ◇ UNVERIFIED |
| CRClinch River Casting INC. | Caryville | TN | — | ◇ UNVERIFIED |
| CSCmc Steel Us, LLC | Nashville | TN | — | ◇ UNVERIFIED |
| CMColfor Mfg Machining Div Minerva Operations | Minerva | OH | — | ◇ UNVERIFIED |
| CICollis INC | Elizabethtown | KY | — | ◇ UNVERIFIED |
| CWColorado Water Jet Company | Berthoud | CO | — | ◇ UNVERIFIED |
| CCColson Caster Corporation | Jonesboro | AR | — | ◇ UNVERIFIED |
| CBColumbia Business Center Bldg 33 | Vancouver | WA | — | ◇ UNVERIFIED |
| CHCommercial Honing CO | Fontana | CA | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing INC | Marion | MT | — | ◇ UNVERIFIED |
| CSComplete Surface Technologies INC | Clinton Township | MI | — | ◇ UNVERIFIED |
| CSCompx Securityproducts | River Grove | IL | — | ◇ UNVERIFIED |
| CSConnectivity Solutions Mfg Incorporated | Omaha | NE | — | ◇ UNVERIFIED |
| CCConnector Castings INC | Selmer | TN | — | ◇ UNVERIFIED |
| CPContinental Powertrain USA LLC | Fountain Inn | SC | — | ◇ UNVERIFIED |
| CPControlled Precision Machining INC | Farmington Hills | MI | — | ◇ UNVERIFIED |
| CICooper Ind/corry Plt | Corry | PA | — | ◇ UNVERIFIED |
| CICopelands, INC. | Ooltewah | TN | — | ◇ UNVERIFIED |
| CFCopper Field Chimney Supply | Aberdeen | NC | — | ◇ UNVERIFIED |
| CICovert Iron Works | Cudahy | CA | — | ◇ UNVERIFIED |
| CBCpeg Buffalo LLC | Tonawanda | NY | — | ◇ UNVERIFIED |
| CMCraft Machine Works Incorporated - 56th Street | Hampton | VA | — | ◇ UNVERIFIED |
| CTCraig Technologies | Seaford | DE | — | ◇ UNVERIFIED |
| CVCrane Valves Fndry Sand Landfill-wa Cnty | Washington | IA | — | ◇ UNVERIFIED |
 Creative Machining Technolgy | Corona | CA | — | ◇ UNVERIFIED |
| CMCreative Metalcraft CORP. | Hiram | GA | — | ◇ UNVERIFIED |
| CMCreganna Medical | Tualatin | OR | — | ◇ UNVERIFIED |
| CPCrenlo - Plant 3 | Rochester | MN | — | ◇ UNVERIFIED |
| CUCrest Ultrasonics | Trenton | NJ | — | ◇ UNVERIFIED |
| CSCrystal Stamping LLC | Pawtucket | RI | — | ◇ UNVERIFIED |
| CPC&s Plating & Machine | Trenton | GA | — | ◇ UNVERIFIED |
| CRCurrent River Die Sinking | Doniphan | MO | — | ◇ UNVERIFIED |
| CMCygnus Mfg CO LLC | Saxonburg | PA | — | ◇ UNVERIFIED |
| DMDaido Metal USA LLC | Bellefontaine | OH | — | ◇ UNVERIFIED |
| DFDallas Facility | Dallas | TX | — | ◇ UNVERIFIED |
| DCDalton CORP Kendallville Mfg Facility | Kendallville | IN | — | ◇ UNVERIFIED |
| DIDaman Industrial Services | East Brady | PA | — | ◇ UNVERIFIED |
| DLDana Liner Foundry and Machine Plant | Richmond | IN | — | ◇ UNVERIFIED |
| DPDansville Properties, LLC | Dansville | NY | — | ◇ UNVERIFIED |
| DCData Communique International INC | Carlstadt Boro | NJ | — | ◇ UNVERIFIED |
| DHDave Hunter CO LLC | Albany | OR | — | ◇ UNVERIFIED |
| DWDavis Welding | Gibson City | IL | — | ◇ UNVERIFIED |
| DBDean Baldwin Painting | Roswell | NM | — | ◇ UNVERIFIED |
| DLDeburring Laboratories INC | New Britain | CT | — | ◇ UNVERIFIED |
| DSDecimet Sales INC | Rogers | MN | — | ◇ UNVERIFIED |
| DEDefiance Energy | Defiance | OH | — | ◇ UNVERIFIED |
| DSDelray Steel Casting INC | Melvindale | MI | — | ◇ UNVERIFIED |
| DMDent Mfg CO Inc/northampton | Northampton | PA | — | ◇ UNVERIFIED |
| DFDesign Form INC | Stanton | CA | — | ◇ UNVERIFIED |
| DEDesman Engineering INC | Alexandria | MN | — | ◇ UNVERIFIED |
| DSDexter Stamping Company, LLC | Murfreesboro | TN | — | ◇ UNVERIFIED |
| DCDff CORP | Agawam | MA | — | ◇ UNVERIFIED |
| DIDiebold INC | Seville | OH | — | ◇ UNVERIFIED |
| DSDietze & Schell Manufacturing Solutions Na, INC. | Anderson | SC | — | ◇ UNVERIFIED |
| DTDigital Tool & Automation | Ramsey | MN | — | ◇ UNVERIFIED |
| DCDiversified Computer Supplies INC | Stanton | KY | — | ◇ UNVERIFIED |
| DMDiversified Metal Products, INC | Englewood | CO | — | ◇ UNVERIFIED |
| DMDixie Metalcraft INC. | Fort Myers | FL | — | ◇ UNVERIFIED |
| DLD & L Fabricators | Grafton | WV | — | ◇ UNVERIFIED |
| DCDme CO | Youngwood | PA | — | ◇ UNVERIFIED |
| DCDme CO Div of Milacron CORP | Charlevoix | MI | — | ◇ UNVERIFIED |
| DCDomestic Casting CO LLC | Shippensburg | PA | — | ◇ UNVERIFIED |
 Donaldson CO INC - Minneapolis | Bloomington | MN | — | ◇ UNVERIFIED |
| DIDonsco INC Building 8 | Belleville | PA | — | ◇ UNVERIFIED |
| DRD & R Metal Finishing | Houston | TX | — | ◇ UNVERIFIED |
| DMDuffin Mfg CO | Elyria | OH | — | ◇ UNVERIFIED |
