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Figure 21 Photographs of siltstone “splits” in the Springfield Coal. (a) Upper “bench” of coal splitting into multiple layers, with ragged splaying of lower coal layers at the Millennium Mine. (b) Contact between upper coal “bench” and massive siltstone “split” in American Coal’s Millennium Mine, approximately 0.6 mi (1 km) west of the main Galatia channel. Notice complete absence of root traces in the siltstone.
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