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Fall 2019 Subsidence and Geologic Field Observations <br /> Southern Panels Mining Area <br /> Longwall Panel E7 and partially mined E-seam Longwall Panel E8 in the Southern Panels Mining <br /> Area as well as unmined E-seam Longwall Panel SS in the Sunset Trail Mining Area. <br /> Readers should note that observations are discussed relative to traverses along segments of drill <br /> roads providing access to drilling pads containing mine ventilation boreholes (MVBs). Given the <br /> dynamic nature of the mining activities(i.e.,adding and reclaiming road segments and MVB pads), <br /> future naming of traverses will likely vary from report to report. Efforts will be made, as practical, <br /> to keep traverse names the same. Specific nomenclature for observed features are regularly <br /> represented on Map 1 of each report. <br /> 831-032.910 Wright Water Engineers, Inc. Page 6 <br /> February 2020 <br />