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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
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- File:Penn carbondale 4-80.jpg + (Figure 4-80. Thin lens of Energy Shale tr … Figure 4-80. Thin lens of Energy Shale truncated with an angular contact by the overlying Anna Shale at the Orient No. 4 underground mine, Williamson County, Illinois. Laminations in the Energy Shale can be seen on the left side of the photograph. The knobby lower surface of the Brereton Limestone can be seen at the top of the image. Approximate height of view is 5 ft (1.5 m). Photograph 1976 from ISGS files. © University of Illinois Board of Trustees. University of Illinois Board of Trustees.)