Portola Valley, CA Mines
Mines in Portola Valley, California
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| J.M. Macdonough Ranch | Private | Gold Lead Silver |
||
| Langley Hill Quarry | Private | Stone | ||
| Langley Hill Quarry and Mill | Dempsey, Michael And Pat | Private | Stone, Crushed | |
| New Page Mill Quarries | Stone | |||
| New Page Mill Quarries | Unknown | Stone |
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