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four different areas. It is projected that coal yields from the New Horizon <br /> Mine 2 area in 1993 through 1998 will total 373,600 tons per year. <br /> Prior to the mine temporarily ceasing operations in 1983, coal was mined using <br /> two 5-yard draglines to remove overburden. Since reactivation of mining <br /> operations in late 1986, Peabody changed to using dozers and scrapers for <br /> overburden removal activities. Two coal seams were removed from Mine Areas I <br /> and 4, whereas one coal seam was removed from Mine Areas 2 and 3. The upper <br /> coal seam was previously mined by Peabody in Mine Areas 2 and 3 under interim <br /> permit 75-36 issued by the Colorado Mined Land Reclamation Board. <br /> After the coal seams were recovered, the pits were backfilled and graded. The <br /> regraded area approximates the original surface contours . The area has been <br /> topsoiled and revegetated; however, additional earthwork is required to insure <br /> positive drainage at the pit located in the Rice property. To date , no bond <br /> release has been requested. <br /> New Horizon Mine 2 <br /> Prior to any disturbance at the New Horizon Mine 2 area, Sediment Pond 007 and <br /> the associated collection ditch along the southern permit area boundary will <br /> be constructed. Then, in advance of the mining pit, brush will be cleared and <br /> topsoil salvaged in either a double or mixed lift operation, depending on soil <br /> type, quality, and depth. Topsoil salvaging depths and plans are detailed in <br /> Tab 9 of the permit revision application. <br /> Whenever possible, topsoil will be live hauled to active reclamation areas . <br /> However, this is not always possible and some topsoil will be stockpiled. <br /> Stockpiled topsoil will be protected from wind and water erosion by roughening <br /> and ditching around the pile, establishing an annual cover crop, or <br /> establishing a perennial grass cover, depending on the length of time a <br /> stockpile will be in place. <br /> Mining at New Horizon Mine 2 will follow the pattern shown in Map 2.05.3-1 of <br /> the permit application. No overburden removal or coal mining will take place <br /> at the New Horizon Mine 1 area; however, reclamation will continue to be <br /> carried out at New Horizon 1 . <br /> Mining activities will begin in early 1993. Excavation will be performed by <br /> dozers , trucks and shovel . Some excavation may be carried out by scrapers and <br /> dozers . The anticipated mining schedule for each area where mining will occur <br /> is graphically shown on Map 2 .05.3-1 . Overburden will be removed by a shovel <br /> and trucks and/or scrapers after an area has been drilled and shot. <br /> The primary coal seam to be recovered is the Lower Dakota seam; however, the <br /> Upper Dakota seam will be recovered if it is thick enough and of sufficient <br /> quality. Maximum overburden depth will approach 90 feet. Excavations will <br /> develop pits having a generally north-south orientation which progress <br /> westward. <br /> Mining will begin along the eastern subcrop of the New Horizon Mine 2 area and <br /> use a panel mining method to develop the pits (see Map 2.05.3-1 ) . The panels <br /> will vary in length and width according to conditions , but will average <br /> approximately 500 feet long and 120 feet wide . Mining will generally progress <br /> _11_ <br />