Browse mineral resources

United States Gypsum Co. Mine

Past Producer • Gypsum-Anhydrite

Marblehead Stone Quarry

Past Producer • Limestone, General

Rocky Ridge Quarry

Past Producer • Limestone, General

White Rock Quarry

Past Producer • Calcium

American Mine Number 2 Quarry

Past Producer • Gypsum-Anhydrite

Genoa Quarry

Past Producer • Calcium

White Rock Quarry L.P.

Producer • Calcium

Clay Center Plant

Producer • Stone

U.S. Gypsum Mill

Past Producer • Gypsum-Anhydrite

American Mine No 2

Producer • Gypsum-Anhydrite

Geawe Quarry

Past Producer • Stone, Crushed/Broken

Lower Mine

Past Producer • Gypsum-Anhydrite

Brush Wellman/ Elmore, Ohio

Past Producer • Beryllium

Marblehead Quarry

Plant • Stone, Crushed/Broken

Rocky Ridge Plant

Producer • Stone, Crushed/Broken

Ottawa County Hwy Dept.

Producer • Stone, Crushed/Broken

U.S. Gypsum Company Genoa Quarry

Producer • Stone, Crushed/Broken