Results: 1 - 7 of 7
Dec 31, 1981
Economic Geology Report
Nov 18, 2008
Data
… coal, shaly-coal and coaly-shale), formation tops and …
Dec 31, 1968
Earth Sciences Report
… a relatively impermeable marine shale, completely underlies the … beds of argillaceous sandstone, shale, and coal which immediately …
Dec 31, 1979
Open File Report
Dec 31, 1971
Earth Sciences Report
Dec 31, 1971
Earth Sciences Report
Dec 31, 1970
Earth Sciences Report