Primary Metal Manufacturing in Maryland
NAICS 331 · MD
The register lists 37 facilities in Maryland. The Bureau of Labor Statistics counted 58 establishments in Maryland. CAMBRIDGE INTERNATIONAL, located in Cambridge, employed 136 people in 2025.
SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE
Map, cities and product lines
Plants in Maryland1 FACILITIES
| Facility | City | Employees | Status |
|---|---|---|---|
| Wally`s Iron Works | Mount Airy | 20–99 | UNVERIFIED |
All primary metal manufacturing nationwide · All manufacturing in Maryland