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Fall 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mininq Areas <br />Figure 8. Southeastward view during our spring 2017 field visit of a subsidence <br />crack along the access road to the MVB E6-14 pad. This crack created an elevation <br />drop of approximately 10 inches from south side to the north side. <br />Figure 9 provides a view of the same location as observed during the fall 2017 field visit. The <br />elevation change in the road is still present and of similar magnitude even though the cracks at the <br />edge of the road are more rounded, weathered, and somewhat healed. E -seam overburden <br />thickness at this location is about 700 feet. <br />Figure 9. Southeastward view during our fall 2017 field visit of the same subsidence <br />crack depicted in Figure 8. <br />Approximately 50 feet north of the elevation offset in the road is a series of three smaller semi - <br />parallel subsidence cracks with an orientation of about N60°E as first observed during our spring <br />831-032.799 Wright Water Engineers, Inc. Page 18 <br />February 2018 <br />