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Description of [he Mine Operation Plan <br />Sizes of Permit Area Disturbed Area and Production Volumes <br />The permit area covers approximately 10,382 acres. Since mining began, cumulative disturbance <br />will total x,832 acres by the end of this permit term (2002). tiew disturbance during the years <br />1998-2002 will be approximately 1,025 acres, and 901 acres will be reclaimed. Coal production <br />from the Trapper mine will gradually decline from a maximum annual production of 2.3 million <br />tons in 1998 to 2.2 million tons in 2002. Total cumulative production over the life of Trapper <br />mine is projected to be a maximum of 74 million tons. The projected overall life of the mine is <br />thirty five years with mining ceasing in 2013. <br />Minine Method <br />Draglines remove coal at the Trapper Mine using azea strip mining methods. The pits are <br />elongate north-south, parallel to the downhill dip of the coal seams; each successive pit cut is <br />next to and pazallel to the previous cut. When more than one seam is recovered in a pit, partings <br />aze removed by dozer, or backhoe, or similaz equipment if thin; or by dragline, if thick. <br />'ts <br />Trapper will mine coal from the following six pits during the 1998-2002 permit term: A-S <br />(Ashmore South), A-E (Ashmore East), D (Derringer), F (Flintlock), F£ (Flintlock East), and G <br />(Galling). Pits advance generally eastwazd. Individual cuts in pits are as much 6,000 ft: long. <br />The maximum width of a cut is 200 fr. A (Ashmore) pit and E (Enfield) pit remain open for ash <br />disposal (see description of ash disposal below). <br />Removal of Topsoii and Overburden <br />Prior to disturbance, and in advance of the pits, brush is cleazed and topsoil is removed and <br />salvaged. Topsoil is stockpiled only if a live-haul replacement area is not :available in the area. <br />If stockpiled, piles are shaped and seeded to establish vegetation for protection from wind and <br />water erosion. Afrer topsoil removal, the overburden is drilled and blasted in advance of the pit. <br />Overburden is then stripped by draglines, scrapers, or bulldozers. Finally, front-end loaders load <br />coal into 90-ton haul trucks which deliver the raw coal to the Craig Power Plant. <br />Trapper Mine 12 May 13, 1998 <br />