File:B100 figure 34.jpg

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Figure 34 Structure of top of the Springfield Coal Member in the central part of Eagle Valley Syncline. Contour interval is 5O feet inside coal outcrop and 100 feet elsewhere (Nelson and Lumm 1987).

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current13:53, 11 July 2019Thumbnail for version as of 13:53, 11 July 20192,150 × 1,372 (712 KB)Alan (talk | contribs)

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