Clackamas County, OR Silica Mines
Silica Mines in Clackamas County, OR
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Francis Welsh Silica Mine | Silica | |||
| Francis Welsh Silica Mine | Unknown | Silica | ||
| Molalla Clay | Private | Surface | Silica | |
| Terrill Silica Deposit | Silica | |||
| Terrill Silica Deposit | Unknown | Silica |
Clackamas County, OR Silica Mines
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