| ACAti Casting Services INC. | La Porte | IN | — | ◇ UNVERIFIED |
| ASAtlantic States Cast Iron Pipe | Phillipsburg | NJ | — | ◇ UNVERIFIED |
| AFAuburn Foundry, INC Plant 1 | Auburn | IN | — | ◇ UNVERIFIED |
| AGAustin Gray Iron Foundry | Sheboygan | WI | — | ◇ UNVERIFIED |
| BABabcock and Wilcox - Foundry Operations (1677020054) | Barberton | OH | — | ◇ UNVERIFIED |
| BIBadger Iron Works INC | Menomonie | WI | — | ◇ UNVERIFIED |
| BEBagby Enterprises INC. | Branson | MO | — | ◇ UNVERIFIED |
| BHBag House Industrial Sheet Metal | Corona | CA | — | ◇ UNVERIFIED |
| BFBama Foundry INC | Montgomery | AL | — | ◇ UNVERIFIED |
| BSBarber Steel Foundry Corporation | Rothbury | MI | — | ◇ UNVERIFIED |
| BSBarnmaster Supply LLC Dba Marnmaster | Ontario | CA | — | ◇ UNVERIFIED |
| BPBarry Pattern and Foundry Company, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| BIBehr Iron & Metal | Peoria | IL | — | ◇ UNVERIFIED |
| BCBelcher (advanced Cast Products) | Easton | MA | — | ◇ UNVERIFIED |
| BFBelgium Foundry CORP | Belgium | WI | — | ◇ UNVERIFIED |
| BFBell Foundry CO | South Gate | CA | — | ◇ UNVERIFIED |
| BCBentonville Castings Company | Bentonville | AR | — | ◇ UNVERIFIED |
| BFBerne Foundry LLC (a1453) | Pigeon | MI | — | ◇ UNVERIFIED |
| BFBig Four Foundries CORP | Tulsa | OK | — | ◇ UNVERIFIED |
| BTBingham & Taylor | Rocky Hill | CT | — | ◇ UNVERIFIED |
| BFBlackhawk Foundry & Machine CO | Davenport | IA | — | ◇ UNVERIFIED |
| BFBloomfield Foundry, INC | Bloomfield | IA | — | ◇ UNVERIFIED |
| BFBorough Furnace, Inc. | East Syracuse | NY | — | ◇ UNVERIFIED |
| BFBoyertown Foundry Co/fka Eafco | New Berlinville | PA | — | ◇ UNVERIFIED |
| BIBrandenburg Indus Svc CO at Brillion Ironworks | Brillion | WI | — | ◇ UNVERIFIED |
| BMBrom Machine & Foundry CO | Winona | MN | — | ◇ UNVERIFIED |
| BFBrown Foundry - Dupl of Vtdec 689 | Swanton | VT | — | ◇ UNVERIFIED |
| BIBryant Investments of West Texas LLC | Lubbock | TX | — | ◇ UNVERIFIED |
| BBBuckner By Storm | Fresno | CA | — | ◇ UNVERIFIED |
| BMBurgess-norton Mfg CO / Std Auto Parts CO Div | Muskegon | MI | — | ◇ UNVERIFIED |
| BGB.w. Grinding CO. | Lyons | OH | — | ◇ UNVERIFIED |
| CCCamden Casting Center INC | Camden | TN | — | ◇ UNVERIFIED |
| CCCamden Casting Center INC | Camden | TN | — | ◇ UNVERIFIED |
| CFCampbell Foundry Company | Harrison | NJ | — | ◇ UNVERIFIED |
| CICarmack INC Dba Phenix Foundry | Phenix City | AL | — | ◇ UNVERIFIED |
| CCCase Corporation - Racine Foundry Plant | Racine | WI | — | ◇ UNVERIFIED |
| CICastalloy INC Walterboro | Walterboro | SC | — | ◇ UNVERIFIED |
| CTCast-fab Technologies, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| CICast Industries LLC | Albany | MN | — | ◇ UNVERIFIED |
| CPCastwell Products INC | Skokie | IL | — | ◇ UNVERIFIED |
| CICaterpillar INC | Hodges | SC | — | ◇ UNVERIFIED |
| CICaterpillar INC. | Mapleton | IL | — | ◇ UNVERIFIED |
| CICaterpillar INC Seals Metalcasting Facility | Toccoa | GA | — | ◇ UNVERIFIED |
| CICelestial Iron Works | Lawrence | KS | — | ◇ UNVERIFIED |
| CSCe Systems | Columbus | IN | — | ◇ UNVERIFIED |
| CFCharlette Foundry | Blackstone | MA | — | ◇ UNVERIFIED |
| CIChassix, INC. | Columbus | GA | — | ◇ UNVERIFIED |
| CLChrysler, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| CACitation Aluminum, LLC | Bay Minette | AL | — | ◇ UNVERIFIED |
| CMClearfield Mach Co/3rd & Everett Streets | Clearfield | PA | — | ◇ UNVERIFIED |
