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Fall 2019 Subsidence and Geologic Field Observations <br /> Southern Panels Mining Area <br /> dead aspen tree had fallen across the road about 500 feet south of the locked gate. This prevented <br /> travel to the south and to the `T' intersection. <br /> This traverse is located above the E-South Mains and the western ends of mined E-seam Longwall <br /> Panels E3, E4, E5, and E6. <br /> No subsidence-related features were observed along this traverse during the fall 2019 field visit. <br /> 4.3 Traverse C-C' <br /> Traverse C-C' originates in the Deer Creek drainage adjacent to the lower stock pond (P74) and <br /> proceeds eastward, trending north and then south, over mined E-seam Longwall Panels E2, E3, <br /> E4, E5, E6, and E7 (see Map 1). E-seam overburden depths along this traverse vary from 450 feet <br /> in the Deer Creek drainage to approximately 900 feet over mined E-seam Longwall Panels E4 and <br /> E5. <br /> Numerous MVB pads have been historically accessible from this traverse including E3-6, E3-12, <br /> E3-17.5, E3-21, E3-25, E4-15, E4-16, E4-17, and E4-18 over mined E-seam Longwall Panels E3 <br /> and E4, as well as E5-17 and E5-18 over mined Longwall Panel E5. Each of these pads has now <br /> been reclaimed. <br /> In 2016 and again in 2017, this traverse was extended southward across what is now mined E- <br /> seam Longwall Panel E6 and ET This extension currently provides access to the MVB E6-13 and <br /> E6-14 pads, as well as the MVB E7-12 pad. <br /> During the fall 2018 field visit, a series of parallel subsidence cracks were observed in the road <br /> north of the MVB E7-12 pad. These cracks were very difficult to identify during the subsequent <br /> spring and fall 2019 field visits. Therefore, no additional images will be provided for these <br /> features. Parallel subsidence cracks (N60°W orientation)were also observed during the fall 2018 <br /> field visit along the road south of the E7-12 MVB pad (Location 1). A follow-up visit was made <br /> to this location during our fall 2019 field work and our observations are provided below. <br /> 831-032.910 Wright Water Engineers, Inc. Page 12 <br /> February 2020 <br />