Frederick County, Maryland — Mines
10 mines | 1,680 violations
| Mine | Type | Status | Violations | Penalties |
|---|---|---|---|---|
| ESSROC | Facility | Abandoned | 588 | $433K |
| Frederick Quarry | Surface | Active | 450 | $234K |
| Laurel Hill Quarry | Surface | Active | 302 | $108K |
| S W Barrick & Sons | Surface | Active | 200 | $211K |
| Frederick Quarry | Surface | Active | 62 | $10K |
| FREDERICK GRINDING PLANT | Facility | Active | 46 | $5K |
| Rocky Ridge Plant | Surface | Intermittent | 25 | $2K |
| Mellott-Maryland Stone | Surface | Abandoned | 7 | $500 |
| BUCKEYSTOWN #1 | Surface | Abandoned | 0 | $0 |