Modesto, CA Mines
Mines in Modesto, California
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Graystone Block Co | Unknown | Sand and Gravel | ||
| Putnam Sand and Gravel Co | Unknown | Sand and Gravel | ||
| Unnamed Location | Unknown | Clays |
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Graystone Block Co | Unknown | Sand and Gravel | ||
| Putnam Sand and Gravel Co | Unknown | Sand and Gravel | ||
| Unnamed Location | Unknown | Clays |