| BFBoyertown Foundry Co/fka Eafco | New Berlinville | PA | — | ◇ UNVERIFIED |
| BABradken - Amite - Foundry | Amite | LA | — | ◇ UNVERIFIED |
| BCBranchfield Casting | Galva | IL | — | ◇ UNVERIFIED |
| BTBranton Tools Machine Shop | Bossier City | LA | — | ◇ UNVERIFIED |
| BHBrembo Homer Foundry | Homer | MI | — | ◇ UNVERIFIED |
| BEBrighton Electric Steel Casting CO | Beaver Falls | PA | — | ◇ UNVERIFIED |
| BIBristol Indiana Corporation Dba Brinco | Bristol | IN | — | ◇ UNVERIFIED |
| BMBrom Machine & Foundry CO | Winona | MN | — | ◇ UNVERIFIED |
| BMBurgess-norton Mfg CO / Std Auto Parts CO Div | Muskegon | MI | — | ◇ UNVERIFIED |
| BPBusche Performance Group, Dba Mobex Global - Plant 9 | Albion | IN | — | ◇ UNVERIFIED |
| BPBushe Performance Group, Dba Mobex Global - Plant 2 | Edon | OH | — | ◇ UNVERIFIED |
| CECalifornia Electric Steel INC | Angels Camp | CA | — | ◇ UNVERIFIED |
| CCCamden Casting Center INC | Camden | TN | — | ◇ UNVERIFIED |
| CFCampbell Foundry Company | Harrison | NJ | — | ◇ UNVERIFIED |
| CICarmack INC Dba Phenix Foundry | Phenix City | AL | — | ◇ 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 |
| CRCenterless Rebuilders INC | New Haven | MI | — | ◇ UNVERIFIED |
| CFCharlette Foundry | Blackstone | MA | — | ◇ UNVERIFIED |
| CVChem Valley Machine | Nitro | WV | — | ◇ UNVERIFIED |
| CLChrysler, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| CMCigas Machine Shop INC | Coatesville | PA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop, INC. | Pottstown | PA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop, INC. | Coatesville | PA | — | ◇ 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 |
| CRClinch River Casting INC. | Caryville | TN | — | ◇ UNVERIFIED |
| CMColfor Mfg Machining Div Minerva Operations | Minerva | OH | — | ◇ UNVERIFIED |
| CWColorado Water Jet Company | Berthoud | CO | — | ◇ UNVERIFIED |
| CFColumbiana Foundry CO | Columbiana | OH | — | ◇ UNVERIFIED |
| CSColumbus Steel Castings | Columbus | OH | — | ◇ UNVERIFIED |
| CHCommercial Honing CO | Fontana | CA | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing INC | Marion | MT | — | ◇ UNVERIFIED |
| CPControlled Precision Machining INC | Farmington Hills | MI | — | ◇ UNVERIFIED |
| CICooper Ind/corry Plt | Corry | PA | — | ◇ UNVERIFIED |
| CICovert Iron Works | Cudahy | CA | — | ◇ UNVERIFIED |
| CFCpi Fibergalss INC | Camden | NJ | — | ◇ 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 |
| CPC&s Plating & Machine | Trenton | GA | — | ◇ UNVERIFIED |
| CRCurrent River Die Sinking | Doniphan | MO | — | ◇ UNVERIFIED |
| CMCygnus Mfg CO LLC | Saxonburg | PA | — | ◇ 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 |
| DHDave Hunter CO LLC | Albany | OR | — | ◇ 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 |
| DCDff CORP | Agawam | MA | — | ◇ UNVERIFIED |
| DSDietze & Schell Manufacturing Solutions Na, INC. | Anderson | SC | — | ◇ UNVERIFIED |
| DTDigital Tool & Automation | Ramsey | MN | — | ◇ UNVERIFIED |
| DCDomestic Casting CO LLC | Shippensburg | PA | — | ◇ UNVERIFIED |
 Donaldson CO INC - Minneapolis | Bloomington | MN | — | ◇ UNVERIFIED |
| DIDonsco INC Building 8 | Belleville | PA | — | ◇ UNVERIFIED |
| DMDuffin Mfg CO | Elyria | OH | — | ◇ UNVERIFIED |
| DCDw Clark Company Incorported | East Bridgewater | MA | — | ◇ UNVERIFIED |
| EIEafco INC | Boyertown | PA | — | ◇ UNVERIFIED |
| EIEagle Innovations INC. | Hurricane | UT | — | ◇ UNVERIFIED |
| EIEagle Iron Works | Des Moines | IA | — | ◇ UNVERIFIED |
| EMEagle Machine Products | Sterling Heights | MI | — | ◇ UNVERIFIED |
| EPEagle Precision Tooling INC | Erie | PA | — | ◇ UNVERIFIED |
| EJEast Jordan Iron Works | Denham Springs | LA | — | ◇ UNVERIFIED |
| ESEaton Steel Corp-taylor | Taylor | MI | — | ◇ UNVERIFIED |
| EIEbaa Iron INC | Cordele | GA | — | ◇ UNVERIFIED |
| EIEbaa Iron Jack Rabbit Division | Albany | TX | — | ◇ UNVERIFIED |
| EIEckman Industries INC | Richmond | CA | — | ◇ UNVERIFIED |
| EMEd's Machining & Fabrication | Wray | CO | — | ◇ UNVERIFIED |
| EFEffort Foundry Inc/bath | Bath | PA | — | ◇ UNVERIFIED |
| EBElectron Blackwell | Blackwell | OK | — | ◇ UNVERIFIED |
| ECElectronic Chrome & Grinding Company | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| ELElectron Littleton | Littleton | CO | — | ◇ UNVERIFIED |
| EFElkhart Foundry & Machine Company Incorporated | Elkhart | IN | — | ◇ UNVERIFIED |
| EMElkins Machine & Tool-romulus | Romulus | MI | — | ◇ UNVERIFIED |
| ECEllwood City Forge - X Plant | Ellwood City | PA | — | ◇ UNVERIFIED |
| ECEmpire Casting - Tulsa Gray Iron Fndry | Tulsa | OK | — | ◇ UNVERIFIED |
| EFEmporia Foundry Incorporated | Emporia | VA | — | ◇ UNVERIFIED |
| EIEngines, Incorporated | Milton | WV | — | ◇ UNVERIFIED |
| EMEphrata Mfg Co/ephrata | Ephrata | PA | — | ◇ UNVERIFIED |
| ENExcelco Newbrook INC | Silver Creek | NY | — | ◇ UNVERIFIED |
| EIExcel Ind | Clarence | NY | — | ◇ UNVERIFIED |
| EFExcelsior Foundry CO | Belleville | IL | — | ◇ UNVERIFIED |
| ESExtra Space Storage | Portland | OR | — | ◇ UNVERIFIED |
| FCFabrication Concepts INC | Palm | PA | — | ◇ UNVERIFIED |
| FFFairmount Foundry | Woonsocket | RI | — | ◇ UNVERIFIED |
| FGFascast Gray Iron Foundary | Tulsa | OK | — | ◇ UNVERIFIED |
| FCFederal Chicago CORP | Chicago | IL | — | ◇ UNVERIFIED |
| FDFederal Die Casting CORP | North Chicago | IL | — | ◇ UNVERIFIED |
