Results: 1 - 4 of 4
Jan 23, 2020
Map
… marl/ tufa, metallurgical coal, nickel, peat, phosphate, …
Dec 31, 1982
Open File Report
… Bentonite, Clay and Shale, Coal, Copper, Coquina, Diatomite, …
Dec 31, 1968
Earth Sciences Report
… sandstone, shale, and coal which immediately overlies the … of the high clay content but the coal beds are sufficiently …
Jul 28, 2010
Data
… was created by the Minerals and Coal Geoscience Section of the …