| FACILITY | CITY | STATE | INDUSTRY | EMPLOYEES | STATUS |
|---|---|---|---|---|---|
| Daniel G. Schuster, INC. - Frederick Plant | Frederick | MD | 327320 | — | UNVERIFIED |
| Lafarge Aggregates & Concrete | Frederick | MD | 327320 | — | UNVERIFIED |
| Rinker Materials Hydro Conduit- Frederick | Frederick | MD | 327320 | — | UNVERIFIED |
| United Plate Glass Company (Frederick) | Frederick | MD | 327215 | 1-19 | LIKELY ACTIVE |
| Protec Glass, LLC | Frederick | MD | 327215 | — | UNVERIFIED |
| Protec Glass LLC T a Rowland Glass Studios | Frederick | MD | 327215 | — | UNVERIFIED |
