Montgomery County, Maryland — Mines
6 mines | 535 violations
| Mine | Type | Status | Violations | Penalties |
|---|---|---|---|---|
| Amrize Rockville Quarry | Surface | Active | 396 | $193K |
| Carderock Quarries | Surface | Active | 96 | $13K |
| Stoneyhurst Quarries, Inc. | Surface | Abandoned | 34 | $3K |
| B GIANCOLA QUARRY | Surface | Abandoned | 9 | $707 |