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Spring 2009 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />r1 <br />LJ <br />i s <br />Figure 24. Spring 2009 observation (looking north"stward from Photographic Observation Point <br />1) of downslope vegetation and soil creep toward and over a sandstone outcrop located beneath <br />the reclaimed MDW pad at Location 6 (see also Figure 10 of Section 5.1.2). <br />5.6.2 Location 7 <br />This is the rockfall /landslide site above mined Longwall Panel 19 headgate /Panel 20 tailgate as <br />first observed in spring 2008. B -seam overburden thickness at this location is about 2,200 feet. <br />The rockfall source is the upper sandstone of the Ohio Creek Member of the Mesaverde <br />Formation. The location of this relatively small rockfall /landslide is shown on Map 3. Figure 25 <br />• shows this rockfall/landslide area from Photographic Observation point 2. Comparisons to <br />831-032.791 Wright Water Engmeers, Inc. Page 37 <br />November 2009 <br />Figure 23, Fall 2008 panoramic observation (looking from west to north) of reclaimed area around <br />the drill pad for MDWs 19 -04 and 19-05 <br />