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Spring 2018 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas <br />previously -observed differential settlement cracks. Evidence of this elevation change on the outer <br />edge of the pad was still present during our spring 2018 site visit. <br />Other previously -observed smaller subsidence cracks in the access road south of the MVB E6-12 <br />remain as small elevation changes in the road that are inconsistent with water bar construction. E - <br />seam overburden in this area is about 800 feet. <br />Further south, Traverse D -D crosses the mined portion of E -seam Longwall Panel E7. The <br />longwall mining face had passed beneath the area just prior to our spring 2018 field visit. As a <br />result, subsidence features were noted on three of the four MVB pads accessible from this traverse. <br />MVB pad E7-11 had no observable subsidence features. MVB pads E7-10 (Location 1), E7-9 <br />(Location 2), and E7-8 (Location 3) all had subsidence features that will be discussed in more <br />detail below. <br />4.4.1 Location 1 <br />As noted above, the longwall mining face had passed beneath this area during the week prior to <br />our spring 2018 field visit to the MVB E7-10 pad (Location 1). This pad has an exposed section <br />of bedrock on the north side of the pad that includes two sandstone ledges of a few feet in thickness. <br />Much of the upper sandstone lens was observed to have new fractures that had allowed sandstone <br />rubble to accumulate at the base of the outcrop (Figure 1). <br />831-032.900 Wright Water Engineers, Inc. Page 12 <br />August 2018 <br />