Jan 23, 2020
Map
… clay, copper, diamonds, dolomite, fly ash, gold, gypsum, …
Dec 31, 1982
Open File Report
… Diatomite, Dimension Stone, Dolomite, Fly Ash, Formation Water, …
Dec 31, 1989
Open File Report
… as well as low contents of dolomite, silica, iron oxides, …