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Fall 2007 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />• <br />• <br />1~ <br />u <br />R ,~ ,; y~!f N ..~ ;,~~ <br />.~ :~ ~. <br />'_, r i , , l <br />pti a ~ ~• .' f :.j i ?t :~~~r <br />~R, , <br />TTr -4~~ ~ 1 <br />_ ~~~ . ~. <br />a <br />~- <br />* / ~y <br /> <br /> <br /> <br />3,,~ .. i <br />!~' <br />e <br />Figure 39. Eastward view of the east side of Box Canyon showing the active rockfall/landslide area located at <br />the mined, eastern part of longwall panel 21 near MDWs 21-32, 21-36, and 21-38 (location 3). The rockfall/land: <br />area is shown in more detail in Figure 40. The photo also shows the cliffs and ledges above the southeastern p~ <br />mined longwall panel 20 (left background) do not appear to have been affected by mining. <br />831-032.780 <br />November 2007 <br />Wright Water Engineers, Inc. <br />Page 54 <br />