| MDMidland Divison of American Industries | Jerseyville | IL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| MFMiller Felpax Corporation | Winona | MN | Plastics and Rubber Products Manufacturing326150 | 20-99 | ◐ LIKELY ACTIVE |
| PMPenn Machine CO INC | Johnstown | PA | Machinery Manufacturing333131 | 20-99 | ◐ LIKELY ACTIVE |
| RLRelco Locomotives INC | Cedar Rapids | IA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
The Timken Company | North Canton | OH | Fabricated Metal Product Manufacturing332991 | — | ◐ LIKELY ACTIVE |
| UMUtlx Manufacturing LLC - Alexandria Manufacturing Facility | Alexandria | LA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| WPWabtec Passenger Transit | Duncan | SC | Machinery Manufacturing333911 | 100-499 | ◐ LIKELY ACTIVE |
| GCGreenbrier Central, LLC - Marmaduke Facility | Marmaduke | AR | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| ATAlstom Transportation | Plattsburgh | NY | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| ARAmerican Railcar Industries | Kennett | MO | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| GMGe Manufacturing Solutions Locomotive Plant | Fort Worth | TX | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| GTGe Transportation Emporium Facility | Emporium | PA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| WCWabco CORP | Duncan | SC | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| SCStanrail Corporation | Gary | IN | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| ARAlabama Railcar Service | Ozark | AL | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| AFAlbertville Frog & Switch | Albertville | AL | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| AIAndersons INC the - Danville Rail | Danville | IL | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| ATAppalachian Tank Car Services, INC. | Elk Mills | MD | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| ARArmour Road Superfund Site | N Kc | MO | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| ASA. Stucki dba Independent Draft Gear | Farrell | PA | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| ASA. Stucki dba Wheelworx | Pekin | IL | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| ATAtlantic Track & Turnout CO. | Memphis | TN | Fabricated Metal Product Manufacturing332111 | 20-99 | ◐ LIKELY ACTIVE |
| ATAtlantic Track & Turnout CO. | Saint Clair | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| CUCAF USA Inc | Elmira | NY | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| CLCEMCO LLC, Fort Worth | Fort Worth | TX | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| CTCsx Transportation Bryan Park Work Equipment Shop | Richmond | VA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| DMDiversified Metal Fabricators, INC | Atlanta | GA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| FCFrit Car, INC. | Bridgeton | NC | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| GCGatx - Colton, Ca Tank Car Facility | Colton | CA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| GRGreenbrier Rail Services | Dothan | AL | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| HRHitachi Rail Sts Usa, INC. | Hagerstown | MD | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| KRKasgro Rail/taylor Twp | New Castle | PA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| KEKershaw Equipment, L.l.c. | Montgomery | AL | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| LMLoram Maintenance of Way Inc (3800 and 3900) | Hamel | MN | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| MRMidwest Railcar Repair INC | Brandon | SD | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| NMNavistar-cherokee Manufacturing Plant | Cherokee | AL | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| NSNorfolk Southern Railway Company | Altoona | PA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| PMPenn Machine Company LLC PLG | Blairsville | PA | Machinery Manufacturing333612 | 1-19 | ◐ LIKELY ACTIVE |
| PAPlasser American Corporation | Chesapeake | VA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| PRProgress Rail Service Corporation | Peru | IN | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| PRProgress Rail Services Corporation | Mayfield | KY | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| PRProgress Rail Services CORP - Roanoke Recycling | Roanoke | VA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| RGRescar Gordon Facility | Gordon | GA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| SRSoutheastern Railway Services | Magnolia | MS | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| TRTransco Railway Products, INC - Oelwein | Oelwein | IA | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| TTTrinity Tank Car, INC. | Longview | TX | Machinery Manufacturing333911 | 20-99 | ◐ LIKELY ACTIVE |
| UPUnion Pacific Railroad CO Desoto Car Shop | De Soto | MO | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| UTUnion Tank Car CO (air) | El Dorado | KS | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| VSVapor Stone Rail Systems | Plattsburgh | NY | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| WGWabtec Global Services | Kansas City | MO | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |