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Spring 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mininq Areas <br />subsidence related as the longwall face had passed through the area a few days prior to our field <br />visit. There were no obvious cracks from which length, width, and depth measurements could be <br />obtained. The E -seam overburden depth at this location is approximately 600 feet. <br />e1R <br />h� r <br />Figure 1. Southward view toward the USFS <br />gate along Traverse B -B showing sections of <br />soil and vegetation that had been shoved <br />randomly together creating uplifted and down - <br />dropped areas on both sides of the gate. <br />4.3 Traverse C -C' <br />AL <br />Figure 2. Southward view away from the USGS <br />gate along Traverse B -B showing additional <br />sections of soil and vegetation that had been <br />shoved randomly together after the longwall <br />mine passed beneath the area. <br />Traverse C -C on7iginates 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, and E6 (see Map 1) as well as portions of unmined E -seam Longwall Panel E7. E -seam <br />831-032.799 Wright Water Engineers, Inc. Page 11 <br />August 2017 <br />