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West Elk Mine <br />6) The use of persistent pesticides is not anticipated. <br />7) Mountain Coal Compaq will, to the extent possible, prevent, control, and suppress range, <br />forest, and coal fires which aze not approved by the DOW as part of this or any other <br />management plan. <br />8) Since wildlife habitat is to be the secondary post-timing land use, MCC has selected plant <br />species to be used on reclaimed azeas based on the following criteria: <br />a. 'their proven nutritional value for wildlife. <br />b. Their use for cover for wildlife species. <br />c. Their ability to support and enhance wildlife habitat after release of bond. <br />These factors have been discussed in other portions of the permit document. As discussed, the <br />intent of MCC is to distribute the plant species in clusters so as to maximize the benefit to <br />wildlife. This will provide adequate edge effect, cover and forage benefits for the wildlife species <br />occurring on and adjacent to the site. <br />Protection of Public Parks and Historic Places - 2.05.6(4) <br />Operations at the West Elk Mine aze not located neaz public parks or historic places; therefore, <br />this section does not apply. <br />Surface Mining Near Underground Mining - 2.05.6 (5) <br />There are no surface mining operations proposed near the West Elk Mine. <br />Subsidence Survey, Subsidence Monitoring and Subsidence Control Plan - <br />2.05.6 (6) (a-f) <br />The extraction of the B-Seam coal, as well as E-Seam coal in Sections 28, 29, and 30, in the <br />permit azea will be completed using longwall mining methods. The resulting disequilibrium due <br />to longwall mining causes surface subsidence. As stated by Peng in Surface Subsidence <br />Engineering (1992), "When total extraction is used, it produces a lazge void in the coal seam and <br />disturbs the equilibrium conditions of the surrounding rock strata. The rock strata bend <br />downward while the floor heaves. When the excavated area (gob) expands to a sufficient size, the <br />roof strata will cave. As a result, the overlying strata continue to bend and break until the piles of <br />the fallen rock fragments are sufficiently high to support the overhanging strata. At this time, the <br />overlying strata no longer cave, but bend and rest on the underlying strata. Strata bending in <br />subsidence develop upward until reaching the surface and forming a subsidence basin. The whole <br />overburden strata and the surface subsidence basin will further go through a period of compaction <br />and gradually become stabilized. " <br />r~ <br />LJ <br />2.()5-97 RevisedJun. 7995 PR06; RevisedJart. 7996 RN03; RevisrdJmr. 7998 PROS <br />