| BEBrt Extrusions INC | Niles | OH | Primary Metal Manufacturing331313 | 100-499 | ● ACTIVE |
| RTRmi Titanium CO (0278060189) | Niles | OH | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| DSDw-national Standard-niles, LLC | Niles | MI | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| TFTrumbull Foundry & Alloy | Niles | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ARAllegheny Rail Products/ Lb Foster CO | Niles | OH | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| TFTrumbull Foundry and Alloy Federal Street | Niles | OH | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| AEAacoa Extrusions INC. | Niles | MI | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| GLGreat Lakes X-cel | Niles | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| MMetaldyne | Niles | IL | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| NSNat Standard-city Complex | Niles | MI | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| OIOakley Industries INC | Niles | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| OVOhio Valley Aluminum C LLC Niles Facilit | Niles | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| WTWheatland Tube CO Niles Plant | Niles | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WCWoodward Controls INC | Niles | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| NZNiles Zekelman Industries | Niles | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| PMPhillips Manufacturing Niles | Niles | OH | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| TFTrumbull Foundry and Alloy Henry Street | Niles | OH | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| ATAlcoa Titanium & Engineered Products (atep) | Niles | OH | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
