| CPChris Plating | Northbrook | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| CRCimco Recycling | Marion | IL | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| CSCircle Smelting CORP | Beckemeyer | IL | Primary Metal Manufacturing331000 | — | ◇ UNVERIFIED |
| CDCitation Dycast | Lake Zurich | IL | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| CCColeman Cable INC | North Chicago | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| CMCombined Metals CORP | Bellwood | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| CSContainer Stapling Company | Herrin | IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| CMContinental Metals INC | Lasalle | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| DBDanville Brass & Aluminum CO | Danville | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| DEDolton Extrusion CO INC | Dolton | IL | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| DMDulin Metals CO | Des Plaines | IL | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| DMDulin Metals CO | Des Plaines | IL | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| DCDuro Cast INC | Somonauk | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| EBElectron Beam Technologies INC | Kankakee | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| ETEpix Tube Company, INC. | Aurora | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| EWEssex Wire - Rockford | Rockford | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| ETE Toman and CO | Lyons | IL | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| EFExcelsior Foundry CO | Belleville | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| FIFansteel INC | North Chicago | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| FTFayette Tubular Products | Sullivan | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| FCFederal Chicago CORP | Chicago | IL | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| FDFederal Die Casting CORP | North Chicago | IL | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| FMFrantz Mfg CO | Sterling | IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| FMFreeport Mcmoron Chicago Rod INC | Chicago | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| GCGeneral Cable | Monticello | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| GGerdau | Urbana | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| GSG & S Foundry & Mfg | Red Bud | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| HMHavana Metal Culverts INC | Havana | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| HFHeartland Foundry CORP | Marengo | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| HAHi-grade Alloy CORP | Hazel Crest | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| IFIllini Foundry CO | Bartonville | IL | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| IWIllini Wire Works INC | Olney | IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| IFIllinois Fabricators INC | Bradley | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| IDIntermet Decatur Foundry | Decatur | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| IHIntermet Havana Foundry | Havana | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ISInterstate Steel CO | Des Plaines | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| JPJoliet Public Scrap Metal Recycling Yard | Joliet | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| KBKeystone Bar Products INC | Chicago Heights | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| KLKeywell LLC | Chicago | IL | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| KIK&k Iron Works | Mccook | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| KCKtr Capital Partners | Franklin Park | IL | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| KSKurland Steel CO | Urbana | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| KFKvk Foundry INC | Millington | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| LSLaclede Steel | Vandalia | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| LSLaclede Steel Company | Madison | IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| LSLake Shore Foundry CO INC | Waukegan | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| LSLavin & Sons | North Chicago | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| LSLexington Steel CORP | Bedford Park | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| LMLunt Manufacturing CO INC | Schaumburg | IL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| LMLunt Maufacturing CO INC | Hampshire | IL | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
