Johnson County, Iowa — Mines
10 mines | 531 violations
| Mine | Type | Status | Violations | Penalties |
|---|---|---|---|---|
| Conklin Quarry and Mill | Surface | Active | 250 | $127K |
| Williams Sandpit | Surface | Active | 130 | $24K |
| Klein Quarry | Surface | Active | 125 | $25K |
| SHOWERS SAND PIT | Surface | Abandoned | 18 | $1K |
| Stripping Crew | Surface | Active | 8 | $2K |