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West Elk Mine <br /> <br />2.04-18 Rev. 11/04- PR10; 07/18- PR15; 01/22- MR459 <br />the economic recovery of the reserve, using current longwall technology, are identified (Map <br />13). In the permit area, the thickness of the B Seam reserve is highly variable because the upper <br />and lower coal benches (B1 and B2) are split by both the M1 and M2 partings in an irregular <br />manner. In this area the B Seam ranges from 1.0 feet to 16.5 feet in total thickness. Map 12 <br />shows the combined total thickness of the B1 and B2 coal benches. <br /> <br />B Seam Reserves <br /> <br />The projected saleable reserves for the B-Seam at year-end 2021 are tabulated in Table 3 for the <br />remaining B Seam reserves, as well as the E seam. Because the combined thickness of the B1 <br />and B2 coal benches can exceed the maximum mineable thickness, a 12-foot maximum mining <br />height is assumed. The maximum mineable thickness is controlled by operational and safety <br />factors. The reserve estimate is based upon current mining plans. <br /> <br /> <br />Table 3 Projected Saleable Reserves (MM Tons) <br /> <br />Reserves Leased To Be Leased Total <br />B Seam 31.7 0 31.7 <br />E Seam 21.2 0 21.2 <br /> Total 52.9 0 52.9 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />