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Fall 2007 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />• <br />u <br />• <br />Figure 15. Southwestward view of the rockfall/landslide area first observed in July 2005, but taken from <br />photographic observation point 1, located 3,200 feet northeast of the area. The light on this north-facing area is <br />better to observe and document the rockfall/landslide area in the massive sandstone of the Ohio Creek Member of <br />the Mesaverde Formation at the left and center of the image. <br />5.3.3 Location 4 <br />A delicately balanced rock, located above mined longwall panel 19 remains unaffected by minim <br />(Figure 16) "fhe balanced rock and the lower rock perched on the cliffs edge to the cast appear <br />to be very susceptible to any minor surface movement. ~'et these rocks have not been affected by <br />longwall mining that occurred prior to the July 2006 Held visit in the B-scam some 2?00 feet <br />below. This observation demonstrates that subsidence can occur in an area without surticial <br />disruption. <br />831-032.780 Wright Water Engineers, Inc. Page 27 <br />November 2007 <br />