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Fall 2013 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas (E -Seam) <br />This traverse is located above the projected E -South Mains and the western ends of mined E -seam <br />Longwall Panels E3 and unmined E -seam Longwall Panels E4 through E6. The lower (north) end <br />of the drainage is located above mined E -seam Longwall Panel E3 which was undermined in <br />December 2012. The E -seam overburden depth drops to 400 feet at this end of the traverse. Fall <br />2013 observations found no subsidence - related features here or elsewhere along this traverse. <br />3.14 Traverse I-I' <br />Traverse I -1 (formerly Traverse P -P') originates in the Deer Creek drainage adjacent to the lower <br />stock pond (P74) and proceeds eastward (after swinging considerably north and then south) over <br />mined E -seam Longwall Panels E2 and E3 and unmined E -seam Longwall Panels E4 and E5 (see <br />Maps 1 and 2). E -seam overburden depths along this traverse vary from a low of 450 feet in the <br />Deer Creek drainage to more than 900 feet over E -seam Longwall Panel E5. <br />Numerous posted MDW pads are accessible from this traverse including E3 -6, E3 -12, E3 -17.5, <br />E3 -21, and E3 -25 over mined E -seam Longwall Panel E3 and E4 -15, E4 -16, E4 -17 and E4 -18 <br />over unmined E -seam Longwall Panel E4. Each of the pads were visited during the fall 2013 field <br />activities except MDW E3 -17.5. Access to this MDW pad was restricted because the road near <br />MDW E3 -21 was impassable due to a contractor installing a new culvert. <br />Our visit to the MDW E3 -6 pad represented the second field visit after longwall mining had <br />occurred beneath the area. Subsidence - related cracking observed during the spring 2013 field visit <br />had significantly healed and is described below as Location 4. Previously observed cracking at <br />the MDW E3 -12 pad and along the drill road to the east were again visited and showed increased <br />signs of weathering and healing. <br />The fall 2013 visits to each of the MDW pads above unmined E -seam Longwall Panel E4 (i.e., <br />MDW E4 -15, E4 -16, E4 -17 and E4 -18) were first time observations to establish baseline <br />conditions. <br />3.14.1 Location 4 <br />Longwall mining occurred beneath the MDW E3 -6 pad after our fall 2012 field visit. Spring 2013 <br />field observation therefore represented the first post - longwall mining visit to this site. That visit <br />831 - 032.795 Wright Water Engineers, Inc. Page 21 <br />January 2014 <br />