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SubTerra, Inc. Twentymile Coal, LLC 4/4/2016 <br />-10.0 <br />-20.0 <br />--30.0 <br />v <br />C <br />.y <br />M -40.0 <br />N <br />-50.0 <br />-70.0 <br />Figure 4: Travelling Subsidence for Panel 9 -East after Retreating 1000 -ft from the Start Room <br />-1000 -500 0 500 1000 1500 2000 <br />Distance from Retreating 9 -East Face <br />Series7 <br />NMD 9RIGHT Subsidence Prediction Mar 16 Rev 8Fig 4 PN 2013-26 <br />