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Exhibit 60C <br />Subsidence Evaluation and 2004 Geologic Hazard Field Observations <br />West Flatiron Lease Area <br />• Another landslide, with a head scarp showing recent movement near the tap, is located near <br />the western txtundary of the liox Canyon mining area and the Vb'esl Flatiron Lease area above <br />un-mined longwall panel 19 (Figure 6). The slide is Icxated within the area of mining <br />inllucnce irf huth areas- <br />• <br />Figure 6. Westward view of a small landslide, located on the West Flatiron Lease area from Location 3. <br />The lop of the slide is located at the boundary between the Box Canyon mining area and the West Flatiron <br />Lease area Another small landslide is located about 300 feet south of thrs slide (out of view on Ihis <br />Image; see Map 1 for locauon). <br />6.4 Location 4 <br />Lucation 4 is on hlighway 133 nutth of the mouth of Raven Gulch (Figums 7 and S). <br />• <br />631-032.650 W dght W ater Engineers. Inc. Page 23 <br />November 2004 <br />