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Subsidence and Geologic Fiald Observations <br />Apache Rocks aM Box Canyon Mining Areas <br />July 12-15, 2004 <br />Irregular cracks as much as alt inch or so wide and I S feet long arc hated in weathered <br />rucks of the Wasatch Formation and the Ohio Creek Member of the Mcsaverde Formation <br />(Figure S). <br />The cracks, which trend roughly eaet to west, may be related to mining, Ixcause no cracks <br />were observed in this are4 lust yqr. These crncks nre not as wide, but look the same as, the <br />gravity-induced cracks observed I'urher norhward above tin-mined areas of West Flatiron. <br />Figure 5. (regular cracks, which vend roughly east to west, are located In clay of the Wasatch Formatlon <br />at Location 3. <br />4.1.5 Traverse E-E' <br />Vehicle traverse begins at fork in road ofT traverse U-D' and ends at methane drainage well sins <br />MDW-23-05 and MDW'-23-06. <br />• Traversed above the appri~ximate middle o(mincd longwall panel 22. <br />1131A32.640 Wright Water Engineers. Inc. Page 74 <br />September 2004 <br />