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Fall 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mininq Areas <br />Figure 12. Northwestward view of a Figure 13. Fall 2017 view of the same area and <br />subsidence crack on the MVB E6-14 pad during subsidence crack as shown in Figure 12. <br />the spring 2017 field visit. Note the small <br />graben -like structure in the right foreground <br />where materials between two cracks have <br />fallen. <br />Also of note on the pad were differential settlement cracks on the north edge where the maximum <br />amount of fill had been placed. <br />4.4 Traverse D -D' <br />This traverse originates along the south side of the Dry Fork Road (Traverse A -A • D Q G S <br />southward up Poison Gulch (drainage east of Deer Creek). This traverse crosses mined portions <br />of E -seam Longwall Panels E3, E4, E5, and E6, as well as unmined portions of E -seam Longwall <br />Panel E7 (see Map 1). The E -seam overburden depth along this traverse varies from slightly less <br />than 700 feet to almost 900 feet. <br />As of our fall 2017 field visit, the portion of this traverse south of Dry Fork provided access to <br />seven MVB pads above mined E -seam Longwall Panels E5 and E6 (i.e., E5-15, E5-16, and E6- <br />12) and unmined E -seam Longwall Panel E7 (i.e., E7-8, E7-9, E7-10 and E7-11). <br />831-032.799 Wright Water Engineers, Inc. Page 20 <br />February 2018 <br />