Frederick County, MD Clays Mines
Clays Mines in Frederick County, MD
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Rochy Ridge Pit | Private | Clays | ||
| Rocky Ridge Pit | Baltimore Brick Co. | Private | Clays | |
| Woodsboro | Lehigh Portland Cement Co. | Clays |
Frederick County, MD Clays Mines
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