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Subsidence Evaluation for the <br />Exhibit 60E Southern Panels, Apache Rocks West, & Sunset Trail Mining Areas Page 2 <br /> <br />831-032.923 Wright Water Engineers, Inc. <br />December 2021 <br />in order to reflect the most current information regarding the layout for the Sunset Trail longwall <br />panels and panel E14 and the projected overburden thicknesses in these areas. <br />The geologic and mining conditions are consistent throughout the Southern Panels, Apache Rocks <br />West, and Sunset Trail mining areas (Agapito, 2005). Therefore, no change was needed in the <br />subsidence model prepared by Dunrud and predictions for subsidence over longwall panels in the <br />South of Divide mining area are considered to also be applicable for the Dry Fork, Apache Rocks <br />West, and Sunset Trail mining areas.