Difference between revisions of "File:Penn carbondale 4-67.jpg"
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Latest revision as of 21:37, 27 January 2021
Figure 4-67. Graphic log based on core from Kentucky Geological Survey borehole WKUG-9 drilled in Carter section 17-P-19, Union County, Kentucky. This is the reference section for the Briar Hill Coal. © University of Illinois Board of Trustees.
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