| ASAmazon.com Svcs LLC | Chicago | — | ◇ UNVERIFIED |
| ACAnderson Casting Co., INC. | Chicago | — | ◇ UNVERIFIED |
| ATArcher Tinning and Re-tinning | Chicago | — | ◇ UNVERIFIED |
| BIBerkshire Investments LLC Dba Chicago Extruded Metals Company | Cicero | — | ◇ UNVERIFIED |
| BFBrumund Foundry INC | Chicago | — | ◇ UNVERIFIED |
| CSCharter Steel Trading | Chicago | — | ◇ UNVERIFIED |
| CHChicago Heights Brass Foundry, INC. | Chicago Heights | — | ◇ UNVERIFIED |
| CVChicago Vacuum Castings CORP | Chicago | — | ◇ UNVERIFIED |
| CSClingan Steel, INC. | Des Plaines | — | ◇ UNVERIFIED |
| CFCmi Frank S Ryan Memorial | Des Plaines | — | ◇ UNVERIFIED |
| CCCopperweld Chicago Division | Chicago | — | ◇ UNVERIFIED |
| CMCosmos Manufacturing, INC. | South Chicago Heights | — | ◇ UNVERIFIED |
| DCDeniston CO | Alsip | — | ◇ UNVERIFIED |
| DIDima Industries | Elk Grove Village | — | ◇ UNVERIFIED |
| DDDo-rite Die & Engineering Company | Chicago Heights | — | ◇ UNVERIFIED |
| DIDurable Incorporated | Wheeling | — | ◇ UNVERIFIED |
| FNFrancis & Nygren Foundry CO | Chicago | — | ◇ UNVERIFIED |
| GIGrand Iron Work INC. | Chicago | — | ◇ UNVERIFIED |
| HDHeick Die Casting CORP | Chicago | — | ◇ UNVERIFIED |
| IPIndustrial Properties of Palatine, LLC | Palatine | — | ◇ UNVERIFIED |
| JIJernberg Industries INC | Chicago | — | ◇ UNVERIFIED |
| JWJerry's Welding INC. | Elgin | — | ◇ UNVERIFIED |
| KTKazmier Tooling Inc., | Chicago | — | ◇ UNVERIFIED |
| KNK. N. M. Industries, INC. | Harwood Heights | — | ◇ UNVERIFIED |
| KIK.n.m. Industries, INC. Dba Lexco Cable | Norridge | — | ◇ UNVERIFIED |
| LTLeavitt Tube Co., LLC | Northbrook | — | ◇ UNVERIFIED |
| LBLeitelt Brothers Foundry, INC | Chicago | — | ◇ UNVERIFIED |
| LMLouis Meskan Brass Foundry, INC. | Chicago | — | ◇ UNVERIFIED |
| MMMaster Machine & Repair Corporation | Bedford Park | — | ◇ UNVERIFIED |
| MFMercedes Fabricating, INC. | Chicago Heights | — | ◇ UNVERIFIED |
| MRMerdian Rail Products CORP | Cicero | — | ◇ UNVERIFIED |
| MPMetal Partners Rebar, LLC | Chicago | — | ◇ UNVERIFIED |
| MAMzg Associates Ii LLC | Chicago Heights | — | ◇ UNVERIFIED |
| NMNational Material CO | Elk Grove Village | — | ◇ UNVERIFIED |
| NMNational Material Processing, LLC | Chicago | — | ◇ UNVERIFIED |
| NPNational Processing Company | Chicago | — | ◇ UNVERIFIED |
| NPNew Process Steel - Nps | Alsip | — | ◇ UNVERIFIED |
| OKO & K American CORP. | Chicago | — | ◇ UNVERIFIED |
| PDParagon Die Casting CO | Chicago | — | ◇ UNVERIFIED |
| PAPetersen Aluminum Corporation Dba Pac-clad | Elk Grove Village | — | ◇ UNVERIFIED |
| RIR.c.m. Industries, INC. | Wheeling | — | ◇ UNVERIFIED |
| SMSipi Metals CORP | Chicago | — | ◇ UNVERIFIED |
| STStarbrite Technologies Inc., | South Chicago Heights | — | ◇ UNVERIFIED |
| TITrialco, INC. | Chicago Heights | — | ◇ UNVERIFIED |
| UHUltimate Highway Sales, INC. | Palos Heights | — | ◇ UNVERIFIED |
| USUnited States Aluminum CORP. | Cicero | — | ◇ UNVERIFIED |
| UAUS Aluminum | Cicero | — | ◇ UNVERIFIED |
| WMWheeling Metal Processing, LTD. | Chicago | — | ◇ UNVERIFIED |
| WAWintec Associates, INC. | Northbrook | — | ◇ UNVERIFIED |
| ZIZekelman Industries Wheatland Tube CO | Chicago | — | ◇ UNVERIFIED |
