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FaII 2007 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and Squth pf pivide Mining Areas <br />• <br />--z <br />~`i, «= <br />`~ <br />~* .~';, <br /> <br /> <br /> <br /> <br /> ti <br />r't <br /> <br /> <br /> .~ <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> . <br /> '9 <br />` ~ <br /> ~ ~ , <br />~ <br /> ~ <br />r . <br /> ~.` , <br />~. <br /> ~, <br /> .~ '' <br /> <br />Figure 12. Crack number S zone located 5 to 20 feet Figure 13. The northern part of crack number 5 zone <br />e~3st and north of crack number 4 zone. The crack, that transects the road-drainage well pad area to the <br />which is at least 12 inches wide beyond the truck, eastern edge of the cliff. <br />transects the drill road area to the eastern edge of the <br />cliff (Figure 13). <br />5.3.2 Photographic Observation Point 1 <br />• <br />This location is at a single methane drainage ~i~ell site above mined longwall panel 20. It was <br />occupied to observe and photograph the slabbing cocktail and landslide area at location ~ (Figure <br />14). slahhing tailure and rockfall activity is currently within about 100 feet (or less) of MDW <br />2 I -3?, ? 1-36, and 21-38. This location IS IIOt Ollly USl'tUl to ObSCCVI' and photograph both the <br />methane drainage well site at location 3, but also to view and photograph the rockfall/landslide <br />area located above the rigid chain pillars north of mined longwall panel ?2 (location G of both <br />spring and tall reports, see Figure 15 of this report). <br />831-032.780 Wright Water Engineers, Inc. Page 25 <br />November 2007 <br />