Middlesex County, NJ Silica Mines
Silica Mines in Middlesex County, NJ
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Fels Refractories/ Edison, N.J. | Fels Refractories, Inc. | Private | Silica | |
| Raritan Fire Clay Belt | Private | Silica |
Middlesex County, NJ Silica Mines
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