Ontario, NY Mines
Mines in Ontario, New York
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Highway Dept Pit | Town Of Walworth | Private | Sand and Gravel | |
| Ontario Iron Ore Co. Workings | Ontario Iron Ore Co. | Private | Iron | |
| Ontario Openings | Furnaceville Iron Co. | Private | Iron | |
| Walworth Quarry | Dolomite Products Co. | Private | Stone, Crushed | |
| Walworth Quarry and Plant | Private | Limestone |