Primary Metal Manufacturing in Illinois
NAICS 331 · IL
Map, cities and product lines
Plants in Illinois11 FACILITIES
| Facility | City | Employees | Status |
|---|---|---|---|
| Heidtman Steel Products INC | Granite City | 20–99 | ACTIVE |
| Mayco Manufacturing LLC dba Mayco Industries | Granite City | 20–99 | ACTIVE |
| Granite City Works of United States Steel CORP | Granite City | — | LIKELY ACTIVE |
| American Steel Foundries - Granite City | Granite City | — | LIKELY ACTIVE |
| Gateway Energy & Coke CO LLC | Granite City | — | LIKELY ACTIVE |
| Granite City Steel | Granite City | — | LIKELY ACTIVE |
| Mayco Mfg LLC | Granite City | — | UNVERIFIED |
| Granite City Plant | Granite City | 100–499 | LIKELY ACTIVE |
| Granite City Works | Granite City | 500+ | LIKELY ACTIVE |
| Custom Steel Processing, INC. | Granite City | — | UNVERIFIED |
| Suncoke Gpi LLC | Granite City | — | UNVERIFIED |
All primary metal manufacturing nationwide · All manufacturing in Illinois
