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Revision <br />February 1982 <br />F Seam is known to occur. (Note that this coal seam nomenclature differs <br />from that used in the 1979 West-Central Coal E.S. as explained in the <br />discussion on geology.) A schematic diagram of coal seams in the area is <br />shown in Figure 2.04.6.A. <br />The mining and operation plan describes in detail the continuous <br />mining of the E Seam and the development of rock tunnels to the underlying <br />Wild Seam and D Seam. Average weighted quality of the E Seam is given as <br />13,923 BTU, 0.63 percent sulfur, 2.41 percent moisture, 2.18 percent ash, <br />56.05 percent fixed carbon and 39.36 percent volatile matter. Average <br />weighted quality of the Wild Seam is given as 9,701 BTU, 1.58 percent <br />sulfur, 3.35 percent moisture, 28.38 percent ash, 40.90 percent fixed car- <br />bon and 27.38 percent volatile matter. Averaged weighted quality of the D <br />Seam is given as 12,227 BTU, 0.84 percent sulfur, 3.28 percent moisture, <br />12.4b percent ash, 48.0 percent fixed carbon and 36.4 percent volatile <br />material. Additional chemical analysis of strata is included in Appendix <br />XVI.8. Chemical analyses for the wild seam are included in Appendix XII-4. <br />Interburden analyses are included in Appendix XII-5. <br />7ota1 in-place reserves for the federal leases in the Hawk's Nest <br />Mining and Operation Plan were estimated at 14.4 million tons for the E <br />Seam, 10.3 million tons for the Wild Seam, and 11.1 million tons for the <br />D Seam. <br />The potential for the discovery of conventional resources of oil and <br />gas under the leased area is very slight. Dry wells have been drilled to <br />• the Dakota Sandstone a few miles to the southwest and to the northwest of <br />the permit area. <br />2.04-18~ <br />