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October 11, 2011 <br />Page 11 <br />The maximum values of these indices, based on the seam workings influencing them and <br />the aggregate value, for all the modeled cases are presented in Table 2. This analysis was <br />performed with simplistic, worst -case panel layout, extraction, and depth assumptions. The <br />actual surface deformations may vary from the results indicated in this analysis, based on <br />deviations in mine geometry, overburden depth, and overburden characteristics. <br />Table 2. Predicted Subsidence Indices for Multi -Seam Mining <br />Mined Seam Maximum Maximum Horizontal Strain Maximum Maximum Curvature <br />Workings <br />Subsidence <br />Tensile <br />Compressive <br />Slope <br />Positive <br />Negative <br />(ft) <br />(millistrain) <br />( millistrain) <br />( %) <br />(1 /ft) <br />(1 /ft) <br />Blue Seam <br />1.65 <br />11 <br />9.54 <br />1.89 <br />3.09 <br />3.16 <br />Apache Seam <br />1.3 <br />3.27 <br />3.06 <br />0.63 <br />0.44 <br />0.43 <br />Cummulative <br />2.92 <br />13.03 <br />8 <br />2.31 <br />2.87 <br />3.62 <br />Agapito Associates, Inc. <br />