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Coking coal of the United States: Modern and historical locations of coking c...
For the open-file report we collected new coking coal samples from Alabama, Kentucky, Oklahoma and Arkansas and analyzed them for proximate and ultimate analyses; calorific... -
Lower Kittanning Coal Bed Known Areal Extent (Outcrop) in Pennsylvania, Ohio,...
This dataset is a polygon coverage of the resource areas of the Lower Kittanning coal zone. This dataset is the digital compilation of geologic and resource maps provided mostly...