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Spring 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas <br />2017 field visit, longwall mining had occurred beneath all three of these pad locations (see Map <br />1). <br />As Traverse D -D • F R Q W L Q X H V pass USM fWndKP9Z w-DerUa file X S <br />access road leads west and then north to the large MVB E5-16 pad. A previously -observed slump <br />on the cut slope side of the road leading to this pad remains evident but shows signs of weathering <br />and healing. Subsidence cracks previously observed on the MVB E5-16 pad also remain present <br />but are difficult to delineate without prior knowledge of their existence. <br />Continuing south, Traverse D -D provides access to the MVB E5-15 and E6-12 pads. No <br />subsidence -related features were observed along the access road to MVB E5-15. A sizeable <br />differential settlement crack on the MVB E6-12 pad was previously observed at this location both <br />during the spring and fall 2016 field visits. Both visits pre -dated longwall mining beneath the area. <br />As of our spring 2017 visit, longwall mining had passed beneath this area with the apparent <br />consequence being a significant drop (up to 3 feet) of the outer edge of the pad coincident with the <br />previously -observed differential settlement cracks (Location 6). <br />Smaller subsidence cracks were also observed in the access road approximately 800 feet south of <br />the MVB E6-12 pad as represented by elevation changes in the road that were inconsistent with <br />water bar construction. This location is above the headgate side of E -seam Longwall Panel E6 <br />with an overburden thickness of about 800 feet. <br />4.4.1 Location 6 <br />A visit to the MVB E6-12 pad during spring 2017 revealed that a large portion of the outside edge <br />of the pad had dropped up to three feet. The location of the head of the down -dropped block of <br />material was relatively coincident with the most continuous of the previously -described <br />differential settlement cracks. While this movement was likely the result of longwall mining <br />beneath the area, there were no other subsidence cracks observed on the pad. The E -seam <br />overburden depth at this location is approximately 850 feet. <br />831-032.799 Wright Water Engineers, Inc. Page 19 <br />August 2017 <br />