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January 2, 2020 Page 5-1 <br />Agapito Associates, Inc. <br />5 RECOVERABLE RESOURCE ESTIMATE <br /> <br /> The design guidelines developed for each seam were used to lay out panels in each HWM <br />area in order to estimate the recoverable resource. Based on previous experience in the A Pit, a <br />0.9 factor was applied to account for the ratio between achieved HWM hole penetration versus the <br />planned penetration. In areas where side dips were significant, a reduced mined seam height due <br />to the side dip was accounted for. An in-place coal unit weight of 82.3 pcf was assumed; results <br />are shown in Table 5-1. <br /> <br /> <br />Table 5-1. Estimated HWM Recoveries <br />Pit Seam Estimated <br />Recovery3 <br />(tons) <br />I-Pit East F 273,018 <br />I-Pit Middle F 436,330 <br />I-Pit West F 454,781 <br /> Sub-Total, I Pit 1,164,129 <br />J Pit East G2 239,179 <br />J-Pit West G2 589,841 <br /> Sub-Total, J Pit 829,020 <br />N Pit <br />L 1,104,348 <br />M 1,042,763 <br />Q 2,005,030 <br /> Sub-Total, N Pit 4,152,141 <br />L Pit <br />H 149,065 <br />K 447,656 <br />Q 306,039 <br /> Sub-Total, L Pit 902,760 <br /> Grand Total 7,048,050 <br /> <br />