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SubTerra, Inc. Twentymile Coal, LLC 3/16/2016 <br />Wolf Creek Seam Extraction <br />Figure 6: Energy Spur Gradient Before and After 9 -RIGHT Undermining <br />Existing Top of Rail <br />Stationing (ft) <br />Subsided Top of Rail <br />Reballasted Top of Rail <br />NMD 9RIGHT Subsidence Prediction Mar 16 Rev 7: Fig 6 PN: 2013-26 <br />