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Fall 2007 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />C7 <br />• <br />?) lrrcgular ct•ctck, lvcall~~ a crack ~ot:e, as Hutch as l(1 inches iridc crud crtt cstintated Z(IU <br />.Teat long. •I'he crack area is located about 50 feet east of crack number 1 zone, and <br />transacts the methane drainage «~ells (Figures 8 and 9). "Phis crack or crack zone has <br />occurred within the last week, according to MCC personnel. <br />~1 <br />L.J <br />831-032.780 Wright Water Engineers, Inc. Page 21 <br />November 2007 <br />Figure 7. Granulate, branching and diverging crack number 1 zone that trends <br />into the actively west slabbing cliff in the shadow in the right background. <br />Individual cracks are as much as 8 inches wide. <br />