File:Penn carbondale 4-81.jpg: Difference between revisions
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{{Image | |||
|File name=Penn carbondale 4-81.jpg | |||
|Caption=Figure 4-81. Strongly jointed, sheety Anna Shale in the roof of the Orient No. 4 underground mine, Williamson County, Illinois. Photograph 1976 from ISGS files. Brunton compass for scale. © University of Illinois Board of Trustees. | |||
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Latest revision as of 21:40, 4 January 2021
Figure 4-81. Strongly jointed, sheety Anna Shale in the roof of the Orient No. 4 underground mine, Williamson County, Illinois. Photograph 1976 from ISGS files. Brunton compass for scale. © University of Illinois Board of Trustees.
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current | ★ Approved revision 21:39, 4 January 2021 | 2,100 × 1,666 (1.32 MB) | Jennifer.Obrad (talk | contribs) |
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