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Fall 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas <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. Each of these pads have now been reclaimed (except E4-18). <br />In 2016 and again in 2017, this traverse was extended southward across what is now mined E - <br />seam Longwall Panel E6 and unmined E -seam Longwall Panel E7. This extension provides access <br />to MVB E6-13 and E6-14 MVB pads as well as the recently constructed pad for MVB E7-12. <br />Previously reported subsidence -related observations over E -seam Longwall Panels E2 to E5 were <br />no longer visible with the exception of the slump adjacent to the drill road above the Deer Creek <br />valley. However, subsidence features were observed during our fall 2017 field visit, at several <br />locations on the access road and pad for MVB E6-13 (Location 2) and E6-14 (Locations 3 and 4). <br />Observations during our spring 2017 field visit also included a significant elevation offset in <br />conjunction with several subsidence cracks observed on the road leading to MVB E6-14 pad <br />(Location 3) along with several subsidence cracks observed on, or near, the MVB E6-14 pad <br />(Location 4). Follow-up observations from our fall 2017 field visit are provided below. <br />Also associated with this traverse are two locations from which east- and west -facing panoramic <br />photographs were, and have historically been, obtained. <br />4.3.1 Location 2 <br />Location 2 is depicted on Map 1 as on the MVB E6-13 pad but actually includes both the pad and <br />an area of approximately 130 linear feet along the access road beginning at its departure from the <br />main drill road. These access road features are located above the northern edge of the mined E - <br />seam Longwall Panel E5 near the tailgate entries. The pad features are located approximately 150 <br />feet south of the tailgate entries. <br />On the MVB E6-13 pad, three sub -parallel subsidence cracks (approximate bearing of N10°E) <br />were observed cutting across both the access road to the pad and the pad itself during the spring <br />2017 field visit. The longest of these cracks was approximately 250 feet and ran intermittently <br />from the mud pit on the north end of the pad to the cut slope on the south end with maximum width <br />831-032.799 Wright Water Engineers, Inc. Page 15 <br />February 2018 <br />