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Fall 2016 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas <br />4.5 Traverse E -E' <br />This traverse originates from Traverse A -A' and continues southward to an intersection with <br />Traverse F -F' and then continues west and south above mined E -seam Longwall Panel E5 and into <br />mined and unmined portions of E -seam Longwall Panels E6. Overburden along this traverse varies <br />from about 900 to 1,020 feet. <br />Traverse E -E' allows access to MVBs E5-9/10 through E5-14 above mined E -seam Longwall <br />Panel E5, as well as access to MVBs E6-8/9 and E6-10 above mined portions of E -seam Longwall <br />Panel E6 and to MVB E6-11 (see Map 1) above unmined portions of E -seam Longwall Panel E6. <br />Each of these MVB pads was observed during the spring 2016 field visit. <br />A subsidence crack was observed during the fall 2016 field visit in the cut slope along the access <br />road to MVB E6-8/9 pad. This feature is discussed in more detail below as Location 2. <br />The differential settlement cracks observed during the spring 2016 field visit along the drill road <br />east of the MVB E6-10 pad were no longer visible during our fall 2016 field visit. This location <br />is discussed in more detail below as Location 3. <br />Also observed note along this traverse were minor cut slope slumping features approximately 450 <br />feet east of the MVB E6-11 pad at a location that appears to be directly over the active longwall <br />mining face as of the time or our visit. No obvious subsidence cracks were observed even though <br />the fresh appearance of the minor slumping was evident. <br />4.5.1 Location 2 <br />During the spring 2016 field visit, two parallel depressions in the road access to the MVB E6-8\9 <br />pads were investigated as potential subsidence features. Given the recent mining beneath the area, <br />the well-healed look of the features suggested they were likely water bars and not subsidence <br />related. However, a subsidence crack was observed in the cut slope along the access road closer <br />to the pad. This feature was found to have maximum dimensions of 3 inches in width, 2 feet in <br />depth and covering a length of approximately 12 feet (Figure 3). Minor slumping of the cut slope <br />closer to the pad is likely the result of the continuation of this subsidence crack even though is not <br />831-032.798 Wright Water Engineers, Inc. Page 15 <br />January 2017 <br />