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Spring 2014 Subsidence and Geologic Field Observations <br />South of Divide a d Dry Fork Mining Areas (E -Seam) <br />no additional rockfall or column failure. No comparative photographs are therefore presented in <br />this report. <br />4.5 Traverse D -D' <br />This is the first of five named smaller traverses that originate from Traverse C -C'. This traverse <br />begins at the USFS gate immediately east of Deep Creek along Dry Fork Road (C' of Traverse C- <br />C') and proceeds northward to the eastert end of E -seam Longwall Panel E3 (see Maps 1 and 2). <br />This traverse leads to five MDWs on two separate pads (E3 -68, E3 -72, E3 -75, E3 -76, and E3 -78). <br />No subsidence features were observed )along this traverse during the spring 2014 field visit. <br />Overburden depth to the E- seam along this traverse ranges from 1,000 to <br />1,200 feet. Mining of the eastern end of � -seam Longwall Panel E3 occurred in 2011. <br />4.6 Traverse E -E' <br />This traverse originates along the north) side of Dry Fork Road (Traverse C -C') and continues <br />northward across the unmined portions ofE -seam Longwall Panel E5 and mined E -seam Longwall <br />Panels E3 and E4. This traverse termina> es at an MDW pad containing E3 -64/65 above mined E- <br />seam Longwall Panel E3. Note that the 93 -64/65 designation indicates one MDW pad containing <br />two separate drill hole termination pointy within the mine workings). <br />This traverse contains side tracks to other MDW pads including E3- 59/61/63 and E3 -64/65 (above <br />mined E -seam Longwall Panel E3), E4- 11/2/3, E44, E4 -5/6 (all above mined E -seam Longwall <br />Panel E4), and E5 -5 and E5 -6/7 (above iunmined E -seam Longwall Panel E5). No subsidence- <br />related features were observed along th* portion of the traverse above mined E -seam Longwall <br />Panel E3 in that mining beneath this area] occurred in late 2011. Previous evidence of subsidence <br />features and differential settlement were) unrecognizable. The E -seam overburden depth beneath <br />these mined Longwall Panel E3 MDW pads is about 1,000 feet. <br />Subsidence - related cracking was observled along portions of the access roads and MDW pads <br />above E -seam Longwall Panel E4 in that pining beneath this portion of the traverse occurred prior <br />to our spring 2013 field visit. E -seam overburden depth beneath these recently mined Longwall <br />831 - 032.795 Wright Water Engineers, Inc. Page 14 <br />September 2014 <br />