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Section of a Coal Mine', 1860 - Stock Image - C045/4723 - Science Photo Library
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CHAPTER V
Coal mine cross-section diagram - Doug Illustration
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Stratigraphy, Depositional Environments and Coalbed Methane Resources of Cherokee Group Coals (Middle Pennsylvanian)--Southeastern Kansas
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Geologic cross-section of the mineable coal seams of the Book Cliffs... | Download Scientific Diagram
Pioneer Tunnel Coal Mine
Splits, Coal Mining Geology, Kentucky Geological Survey, University of Kentucky
