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Figure 46 Disruption of the Danville Coal, with the seam “split” by a thick wedge of mudstone. Note the ragged splaying of coal into mudstone, with a thin coal stringer crossing diagonally from the lower to upper bench. The site is the box cut at a portal of the Prosperity Mine in Gibson County, Indiana.

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current15:39, 11 July 2020Thumbnail for version as of 15:39, 11 July 20202,285 × 1,477 (1.09 MB)Alan.Myers (talk | contribs)

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