File:Penn carbondale 4-78.jpg
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Figure 4-78. Graphic log of Freeman Coal Company borehole No. 06-01-72 drilled in sec. 16, T 3 S, R 2 E, Jefferson County, Illinois. This core serves as a reference section for the Energy Shale and Anna Shale Members. © University of Illinois Board of Trustees.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | ★ Approved revision 21:31, 4 January 2021 | | 1,794 × 2,293 (506 KB) | Jennifer.Obrad (talk | contribs) |
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