Duff Quarry #1
Landmarks
/5
Richland Township, OH
Latitude: 40.4872 (40°29′14″N)
Longitude: -83.8056 (83°48′20″W)
Longitude: -83.8056 (83°48′20″W)
Features
Notes:
Record 1965 of the Active mines and mineral plants in the US
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