| SCSpring City Electrical Mfg. Co. | Spring City | PA | 100–499 | ◐ LIKELY ACTIVE |
| SFStateline Foundries Inc | Roscoe | IL | 20–99 | ◐ LIKELY ACTIVE |
| SFSuperior Forge and Steel | Pittsburgh | PA | 20–99 | ◐ LIKELY ACTIVE |
| TFTalladega Foundry & Machine Company | Talladega | AL | 20–99 | ◐ LIKELY ACTIVE |
| TFTaylor & Fenn CO | Windsor | CT | 20–99 | ◐ LIKELY ACTIVE |
| TFTaylor Foundry | Wichita Falls | TX | 20–99 | ◐ LIKELY ACTIVE |
| TFTexaloy Foundry | Floresville | TX | 20–99 | ◐ LIKELY ACTIVE |
| TCThe Chris Erhart Foundry and Machine Co. | Cincinnati | OH | 1–19 | ◐ LIKELY ACTIVE |
| TGThompson Gundrilling INC | Van Nuys | CA | 20–99 | ◐ LIKELY ACTIVE |
| TFTonkawa Foundry, Inc | Tonkawa | OK | 20–99 | ◐ LIKELY ACTIVE |
| TFTownley Foundry & Machine Company, INC | Candler | FL | 100–499 | ◐ LIKELY ACTIVE |
| TFTrumbull Foundry and Alloy Federal Street | Niles | OH | 20–99 | ◐ LIKELY ACTIVE |
| UMUlven Machinery Co, INC | Hubbard | OR | — | ◐ LIKELY ACTIVE |
| VMVestal Manufacturing Company | Sweetwater | TN | 100–499 | ◐ LIKELY ACTIVE |
| VLVictaulic Lawrenceville | Tioga | PA | 100–499 | ◐ LIKELY ACTIVE |
| WFWaukesha Foundry INC | Waukesha | WI | — | ◐ LIKELY ACTIVE |
| WTWear Tek | Spokane | WA | 20–99 | ◐ LIKELY ACTIVE |
| WFWinnebago Foundry INC | South Beloit | IL | 20–99 | ◐ LIKELY ACTIVE |
| ARAlloys Resources | Albertville | AL | — | ◇ UNVERIFIED |
| AFAmerican Foundry Group / American Alloy Ii | Muskogee | OK | — | ◇ UNVERIFIED |
| AFAmerican Foundry Group LLC - Bixby | Bixby | OK | — | ◇ UNVERIFIED |
| ASAmerican Spincast INC (dba Amstock Supply) | Belton | TX | — | ◇ UNVERIFIED |
| ASAmerican Steel Foundries - Granite City | Granite City | IL | — | ◇ UNVERIFIED |
| AWAmerican Welding & Tank LLC | West Jordan | UT | — | ◇ UNVERIFIED |
| ARAmsted Rail Company, INC | Keokuk | IA | — | ◇ UNVERIFIED |
| ARArmsted Rail Company INC | Hammond | IN | — | ◇ UNVERIFIED |
| BBBahr Brothers Manufacturing, INC. | Marion | IN | — | ◇ UNVERIFIED |
| BCBay Cast INC | Bay City | MI | — | ◇ UNVERIFIED |
| BCBesser CO | Sioux City | IA | — | ◇ UNVERIFIED |
| BQBesser Quinn Machine & Foundry | Boone | IA | — | ◇ UNVERIFIED |
| BFBoyertown Foundry Company | New Berlinville | PA | — | ◇ UNVERIFIED |
| BABradken Atlas | Tacoma | WA | — | ◇ UNVERIFIED |
| BHBrembo Homer Foundry | Homer | MI | — | ◇ UNVERIFIED |
| BIBrewton Iron Works INC | Brewton | AL | — | ◇ UNVERIFIED |
| CUCastings USA INC | New Philadelphia | OH | — | ◇ UNVERIFIED |
| CICaterpillar INC - Mapleton Facility | Mapleton | IL | — | ◇ UNVERIFIED |
| CCCentral Castings CORP | Anniston | AL | — | ◇ UNVERIFIED |
| CPCharlotte Pipe and Foundry Company | Charlotte | NC | — | ◇ UNVERIFIED |
| CMCharter Manufacturing CO INC | Woodstock | IL | — | ◇ UNVERIFIED |
| CVClow Valve CO - Foundry | Oskaloosa | IA | — | ◇ UNVERIFIED |
| CWClow Water Systems Company | Coshocton | OH | — | ◇ UNVERIFIED |
| CCCol-pump Company, INC. (0215010001) | Columbiana | OH | — | ◇ UNVERIFIED |
| CFColumbiana Foundry CO | Columbiana | OH | — | ◇ UNVERIFIED |
| CDCrouse-hinds Div of Cooper Inds | Amarillo | TX | — | ◇ UNVERIFIED |
| CCCrown Casting INC | Hodges | SC | — | ◇ UNVERIFIED |
| CPCulvert Placement and Storage Area Expansion for Waupaca Foundry Plant 5 Facilit | Tell City | IN | — | ◇ UNVERIFIED |
| DCDalton CORP Warsaw Mfg Facility | Warsaw | IN | — | ◇ UNVERIFIED |
| DFDecatur Foundry, INC. | Decatur | IL | — | ◇ UNVERIFIED |
| DFDeeter Foundry | Lincoln | NE | — | ◇ UNVERIFIED |
| DIDenison Industries Main Foundry | Denison | TX | — | ◇ UNVERIFIED |
| DCDmi Columbus, LLC | Columbus | GA | — | ◇ UNVERIFIED |
| DIDonsco Inc/mt Joy | Mount Joy | PA | — | ◇ UNVERIFIED |
| DIDotson Iron Castings | Mankato | MN | — | ◇ UNVERIFIED |
| EJEast Jordan Foundry LLC | Elmira | MI | — | ◇ UNVERIFIED |
| EIEbaa Iron Eastland Plant | Eastland | TX | — | ◇ UNVERIFIED |
| EIEbaa Iron Jack Rabbit Division | Albany | TX | — | ◇ UNVERIFIED |
| ECEsco Corporation - Newton | Newton | MS | — | ◇ UNVERIFIED |
| EPEsco Plant 3 | Portland | OR | — | ◇ UNVERIFIED |
| EFEureka Foundry Company | Chattanooga | TN | — | ◇ UNVERIFIED |
| FCFarrar Corporation | Norwich | KS | — | ◇ UNVERIFIED |
| FPFederal-mogul Powertrain LLC | Lake City | MN | — | ◇ UNVERIFIED |
| FCFord Cleveland Casting Plant | Brookpark | OH | — | ◇ UNVERIFIED |
| GMGeneral Motors Powetrain | Saginaw | MI | — | ◇ UNVERIFIED |
| GDGm Defiance Casting Operations | Defiance | OH | — | ◇ UNVERIFIED |
| GTGoulds Turbine Foundry | Slaton | TX | — | ◇ UNVERIFIED |
| GWGraham White Mfg CO | Salem | VA | — | ◇ UNVERIFIED |
| GIGray Iron Fndry | Blackwell | OK | — | ◇ UNVERIFIED |
| GIGrede Ii, LLC - Brewton | Brewton | AL | — | ◇ UNVERIFIED |
| GLGrede LLC | New Castle | IN | — | ◇ UNVERIFIED |
| GLGrede LLC - Iron Mountain | Kingsford | MI | — | ◇ UNVERIFIED |
| GLGrede LLC - Liberty | Wauwatosa | WI | — | ◇ UNVERIFIED |
| GLGrede LLC - St Cloud | Saint Cloud | MN | — | ◇ UNVERIFIED |
| GPGriffin Pipe Products Company LLC | Lynchburg | VA | — | ◇ UNVERIFIED |
| GWGriffin Wheel Columbus Plant | Groveport | OH | — | ◇ UNVERIFIED |
| GCGunite Corporation | Rockford | IL | — | ◇ UNVERIFIED |
| HFHodge Foundry/greenville | Greenville | PA | — | ◇ UNVERIFIED |
| HFHycast Foundry LLC | Fairfield | IA | — | ◇ UNVERIFIED |
| ICId Castings Building Demolition | Noblesville | IN | — | ◇ UNVERIFIED |
| IMIdeal Machine | Tacoma | WA | — | ◇ UNVERIFIED |
| IPIngersoll-dresser Pump CO | Hastings | NE | — | ◇ UNVERIFIED |
| KCKansas Castings | Belle Plaine | KS | — | ◇ UNVERIFIED |
| KIKennametal INC Bedford Facility | Bedford | PA | — | ◇ UNVERIFIED |
| KSKenosha Steel Castings | Kenosha | WI | — | ◇ UNVERIFIED |
| KPKeokuk Prototype Foundry Company, INC. | Kahoka | MO | — | ◇ UNVERIFIED |
| LNLenco, Nlc INC. | Jackson | MO | — | ◇ UNVERIFIED |
| LCLiberty Casting CO (0121010003) | Delaware | OH | — | ◇ UNVERIFIED |
| LSLone Star Casting & Machine Partners | Kilgore | TX | — | ◇ UNVERIFIED |
| MSMaca Supply CO | Springville | UT | — | ◇ UNVERIFIED |
| MIMagotteaux INC | Pulaski | TN | — | ◇ UNVERIFIED |
| MTMcconway & Torley LLC - Steel Castings Mfg Plant | Pittsburgh | PA | — | ◇ UNVERIFIED |
| MGMe Global INC | Duluth | MN | — | ◇ UNVERIFIED |
| MTMetal Technologies, Inc., Ravenna Ductile Iron | Ravenna | MI | — | ◇ UNVERIFIED |
| MTMetal Technologies INC -three Rivers Gray Iron | Three Rivers | MI | — | ◇ UNVERIFIED |
| MIMetaltek International - Sandusky International Division | Sandusky | OH | — | ◇ UNVERIFIED |
| MVM&h Valve Company, a Division of Mcwane, LLC | Anniston | AL | — | ◇ UNVERIFIED |
| MMMinster Machine CO | Minster | OH | — | ◇ UNVERIFIED |
| MWMotor Wheel Commercial Vehicle Systems INC | Chattanooga | TN | — | ◇ UNVERIFIED |
| MWMotor Wheel LLC | Franklin | KY | — | ◇ UNVERIFIED |
| MCMueller CO | Decatur | IL | — | ◇ UNVERIFIED |
| MCMueller CO | Decatur | IL | — | ◇ UNVERIFIED |