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case is 5.97 feet. This results in a limiting height of approximately <br />• 8.0 feet. If room and pillar methods were utilized greater thicknesses <br />could be extracted but the overall recovery is not as good because of <br />the necessity of leaving stumps and fenders for temporary roof support. <br />Additional information pertaining to this lease can be found in the <br />drill hole data accompanying this report. <br />Lease C-029689 <br />Mineable Reserve Base <br />Recoverable Reserves <br />(502 Recovery Rate) <br />Categorv_ <br />Acres <br />Avg. Thickness <br />Avg. <br />Btu/Pound <br />Category <br />Acres <br />Avg. Thickness <br />Tons (As <br />Received) <br />Measured <br />351.68 <br />6.09' <br />3,858,003 <br />10,224 <br />Indicated <br />1711.82 <br />6.47' <br />19,927,568 <br />10,224 <br />Inferred <br />458.87 <br />6.92' <br />5,711,688 <br />10,224 <br />Recoverable Reserves <br />(502 Recovery Rate) <br />Categorv_ <br />Acres <br />Avg. Thickness <br />Tons <br />• <br />Measured <br />349.61 <br />6.3n' <br />1,918,447 <br />Indicated <br />1696.65 <br />6.47' <br />9,877,439 <br />Inferred <br />438.42 <br />6.91' <br />2,725,957 <br />is <br />