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Fall 2011 Subsidence and Geologic <br />Field Observations <br />Box Canyon, Apache Rocks and South of Divide <br />Mining Areas <br />PREPARED FOR: <br />Mountain Coal Company, LLC <br />West Elk Mine <br />P.O. Box 591 <br />Somerset, CO 81434 <br />PREPARED BY: <br />Gary D. Witt, P.G. <br />Hydrogeologist /Geological Engineer <br />Wright Water Engineers, Inc. <br />C. Richard Dunrud, P.E. <br />Adjunct Senior Geological Engineer <br />Wright Water Engineers, Inc. <br />May 2012 <br />831 - 032.793 <br />