| KSKenosha Steel Castings | Kenosha | WI | — | ◇ UNVERIFIED |
| KPKeokuk Prototype Foundry Company, INC. | Kahoka | MO | — | ◇ UNVERIFIED |
| MTMcconway & Torley LLC - Steel Castings Mfg Plant | Pittsburgh | PA | — | ◇ UNVERIFIED |
| MGMe Global INC | Duluth | MN | — | ◇ UNVERIFIED |
| MIMetaltek International - Sandusky International Division | Sandusky | OH | — | ◇ UNVERIFIED |
| NSNorth Star Casteel Products | Seattle | WA | — | ◇ UNVERIFIED |
| PIPrl Ind Inc/cornwall | Cornwall | PA | — | ◇ UNVERIFIED |
| PIPrl Ind Inc/lebanon | Lebanon | PA | — | ◇ UNVERIFIED |
| QEQuality Electric Steel Castings | Houston | TX | — | ◇ UNVERIFIED |
| RSRh Sheppard Foundry Bendix Hanover | Hanover | PA | — | ◇ UNVERIFIED |
| SFSeabee Foundry | Hampton | IA | — | ◇ UNVERIFIED |
| SASputhern Alloy CORP | Sylacauga | AL | — | ◇ UNVERIFIED |
| SFStar Foundry & Machine | Salt Lake City | UT | — | ◇ UNVERIFIED |
 Superior Forge & Steel Corporation (pittsburgh, Pa) | Pittsburgh | PA | — | ◇ UNVERIFIED |
| UEUniversal Electric Foundry INC | Chicago | IL | — | ◇ UNVERIFIED |
| VPViking Pump INC - South Main Facility | Cedar Falls | IA | — | ◇ UNVERIFIED |
| ASAmerican Spincast Inc. | Belton | TX | 20–99 | ◐ LIKELY ACTIVE |
| ARAmsted Rail Griffin Wheel | Keokuk | IA | 100–499 | ◐ LIKELY ACTIVE |
| BABadger Alloys- Machine shop | Milwaukee | WI | 1–19 | ◐ LIKELY ACTIVE |
| BABadger Alloys- Pattern Shop | Milwaukee | WI | 1–19 | ◐ LIKELY ACTIVE |
| CCCol-Pump Company | Columbiana | OH | 20–99 | ◐ LIKELY ACTIVE |
| DADavis Alloys Manufacturing, LLC | Sharpsville | PA | 20–99 | ◐ LIKELY ACTIVE |
| EAEffort Acquisition INC. | Bath | PA | — | ◐ LIKELY ACTIVE |
| EEfi | Bath | PA | 20–99 | ◐ LIKELY ACTIVE |
| ESEllwood Specialty Metals Company | New Castle | PA | — | ◐ LIKELY ACTIVE |
| ESEllwood Specialty Metals Company | Stow | OH | — | ◐ LIKELY ACTIVE |
| EGESCO Group LLC - Portland Head Office | Portland | OR | 100–499 | ◐ LIKELY ACTIVE |
| GCGranite City Plant | Granite City | IL | 100–499 | ◐ LIKELY ACTIVE |
| JIJgx Industries LLC | Gettysburg | PA | — | ◐ LIKELY ACTIVE |
| LPLima Plant | Lima | OH | 100–499 | ◐ LIKELY ACTIVE |
| MPManheim Pike-FLM | Lancaster | PA | 20–99 | ◐ LIKELY ACTIVE |
| MTMcConway & Torley, LLC | Pittsburgh | PA | 100–499 | ◐ LIKELY ACTIVE |
 Sawbrook Steel Casting LLC | Lockland | OH | 20–99 | ◐ LIKELY ACTIVE |
| SBStar Brass Foundry and Refining Company | Salt Lake City | UT | — | ◐ LIKELY ACTIVE |
| Superior Forge & Steel New Castle | New Castle | PA | 20–99 | ◐ LIKELY ACTIVE |
| VIValmet Inc Waukesha Progress | Waukesha | WI | 20–99 | ◐ LIKELY ACTIVE |
| VIValmet Inc Waukesha Wilmont | Waukesha | WI | 1–19 | ◐ LIKELY ACTIVE |
| VMVulan Metals Corporation | Tacoma | WA | 100–499 | ◐ LIKELY ACTIVE |
| WEWeir Esco | Portland | OR | 20–99 | ◐ LIKELY ACTIVE |
| WEWeir Esco Newton | Newton | MS | 100–499 | ◐ LIKELY ACTIVE |
| WEWeir ESCO - Plant 3 | Portland | OR | 20–99 | ◐ LIKELY ACTIVE |
| WCWhemco-steel Castings, INC | Pittsburgh | PA | — | ◐ LIKELY ACTIVE |
| WMWinsert Marinette | Marinette | WI | 100–499 | ◐ LIKELY ACTIVE |
| WCWisconsin Centrifugal Division | Waukesha | WI | 100–499 | ◐ LIKELY ACTIVE |
| MFMaddox Foundry & Machine Works, LLC | Archer | FL | — | ◇ UNVERIFIED |
| PAPacific Alloy Castings INC | South Gate | CA | — | ◇ UNVERIFIED |
| SRSanta Rosa Stainless Steel | Santa Rosa | CA | — | ◇ UNVERIFIED |
| TFTiffin Foundry & Machine | Tiffin | OH | — | ◇ UNVERIFIED |
| ACAcme Castings INC | Huntington Park | CA | — | ◇ UNVERIFIED |
| AAditech | Leetsdale | PA | — | ◇ UNVERIFIED |
| ACAdvanced Centrifugals LTD | Cambridge | WI | — | ◇ UNVERIFIED |
| AAAdvantage Automation Midwest INC | Decatur | IL | — | ◇ UNVERIFIED |
| ACAlliance Casting CO. LLC (1576010014) | Alliance | OH | — | ◇ UNVERIFIED |
| AIAncast INC. | Sodus | MI | — | ◇ UNVERIFIED |
| ACAnderson Casting Co., INC. | Chicago | IL | — | ◇ UNVERIFIED |
| APArcelormittal Plate LLC | Coatesville | PA | — | ◇ UNVERIFIED |
| ACArt Casting of Montana, INC. | Belgrade | MT | — | ◇ UNVERIFIED |
| ACArtco Chemical | Glenmont | NY | — | ◇ UNVERIFIED |
| AAAti Allegheny Ludlum | Latrobe | PA | — | ◇ UNVERIFIED |
| BFBergstrom Foundry INC | Aberdeen | WA | — | ◇ UNVERIFIED |
| BFBerne Foundry LLC (a1453) | Pigeon | MI | — | ◇ UNVERIFIED |
| BFBoise Foundry and Machine | Melba | ID | — | ◇ UNVERIFIED |
| BABradken - Amite - Foundry | Amite | LA | — | ◇ UNVERIFIED |
| BMBralco Metals Reliance Steel CORP | La Mirada | CA | — | ◇ UNVERIFIED |
| BCBranchfield Casting | Galva | IL | — | ◇ UNVERIFIED |
| BEBrighton Electric Steel Casting CO | Beaver Falls | PA | — | ◇ UNVERIFIED |
| BBrinco | Bristol | IN | — | ◇ UNVERIFIED |
| BIBristol Indiana Corporation Dba Brinco | Bristol | IN | — | ◇ UNVERIFIED |
| BCBrookman Cast | Salem | OR | — | ◇ UNVERIFIED |
| BSBr Services | Canton | OH | — | ◇ UNVERIFIED |
| CECalifornia Electric Steel INC | Angels Camp | CA | — | ◇ UNVERIFIED |
| CMCamco Machine INC | Fontana | CA | — | ◇ UNVERIFIED |
| CSCasteel Services, INC. | Kingsbury | IN | — | ◇ UNVERIFIED |
| CICastings Investment and Alloy Foundries | Bixby | OK | — | ◇ UNVERIFIED |
| CCChemalloy Company Llc/ Conshohocken | Bryn Mawr | PA | — | ◇ UNVERIFIED |
| CRCimco Recycling - Dewey Pl Plant | Milwaukee | WI | — | ◇ UNVERIFIED |
| CPClamp-swing Pricing CO INC | Oakland | CA | — | ◇ UNVERIFIED |
| CSColumbus Steel Castings | Columbus | OH | — | ◇ UNVERIFIED |
| CSCometal Steel INC. | Miami | FL | — | ◇ UNVERIFIED |
| CMCompeer Metals, INC. | Algonquin | IL | — | ◇ UNVERIFIED |
| CMCorbitt Manufacturing Company | Paragould | AR | — | ◇ UNVERIFIED |
| CFCustom Fabrication & Erection | Philpot | KY | — | ◇ UNVERIFIED |
| DSDamascus Steel Casting Company | New Brighton | PA | — | ◇ UNVERIFIED |
| DSDamascus Steel Casting Company | New Brighton | PA | — | ◇ UNVERIFIED |
| DIDuro-cast, INC. | Somonauk | IL | — | ◇ UNVERIFIED |
| DCDw Clark Company Incorported | East Bridgewater | MA | — | ◇ UNVERIFIED |
| ECEac CORP | Miami Beach | FL | — | ◇ UNVERIFIED |
| EEEgs Electrical Group | South Milwaukee | WI | — | ◇ UNVERIFIED |
| EMElectric Melting Services Company, INC. | Pico Rivera | CA | — | ◇ UNVERIFIED |
| ESEmpire Steel Casting/muhlenberg Plt | Reading | PA | — | ◇ UNVERIFIED |
| ECEngineered Castings LLC | Lake Worth | FL | — | ◇ UNVERIFIED |
| ECEsco Corporation | Portland | OR | — | ◇ UNVERIFIED |
| ECEverest Caster & Wheels, LLC | Liberty | MO | — | ◇ UNVERIFIED |
| FCFederal Chicago CORP | Chicago | IL | — | ◇ UNVERIFIED |
| FDFederal Die Casting CORP | North Chicago | IL | — | ◇ UNVERIFIED |
| FAFine Art Sculpture Centre | Clarkston | MI | — | ◇ UNVERIFIED |
| FCFisher Cast Steel (0149000002) | West Jefferson | OH | — | ◇ UNVERIFIED |
| FDFlow Dynamics INC | Ontario | CA | — | ◇ UNVERIFIED |
| FKFormer Kaiser Steel Mill Facility | Fontana | CA | — | ◇ UNVERIFIED |
| FLFoundry LLC | Pompano Beach | FL | — | ◇ UNVERIFIED |
