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• Flintlock Pit Mining Area <br />The Baby Doe and Queen Anne draglines have been the primary stripping machines for this area. <br />Located in the East Pyeatt drainage, mining in these F -pit dip line cuts will advance to the east for the <br />2008-2012 permit term. Refer to the M10 series maps for a yearly detail of the mining and reclamation <br />sequences for the 2008 -2012 permit term. <br />Kimber Pit Mining Area <br />The October 2006 landslide in the East Panel of Trapper Mine has resulted in a dramatic change in <br />planned mining methods at Trapper Mine. The K Pit and L Pit (f.k.a. G Pit) were originally planned as <br />dragline pits, consistent with Trapper's historic mining method. After extensive geotechnical study and <br />mine planning efforts, it has been determined that dragline mining is not a viable mining method for the K <br />Pit due to the steeply dipping structure. <br />After the East Panel landslide, Trapper retained Agapito Associates, Inc. (AAI) to perform geotechnical <br />investigation of the area to determine the causes and ramifications of the event. Numerous studies and <br />evaluations were performed by AAI personnel. A detailed analysis of AAI's findings is available in AAI's <br />January 2008 report, "Trapper G -Pit Landslide Mining Assessment" found in Appendix T. <br />The K Pit will be mined with both a truck/loader fleet, and a dragline. The dragline will open the first cut <br />of the K Pit along the upper ridge (designated as K Ridge Pit). The slide plane has been determined to <br />be a mudstone layer in the L seam roof. The dragline bench for this pit will be below the subcrop of this <br />seam, allowing the dragline to work from a stable surface that is outside of the area affected by the slide. <br />Dragline spoil will be cast into the area of the Horse Gulch Fill. The truck/loader fleet will then begin <br />• excavation of the K Pit. This fleet will generally strip to the L Seam in the eastern portion of the K Pit, <br />allowing the dragline or dozers to excavate to the R Seam with a dipline orientation, progressing to the L <br />Pit. West of these pits, the truck/loader fleet will be the primary earth moving fleet. <br />Due to the steeply dipping pit floors, the initial overburden removed from K Pit will be placed in the Horse <br />Gulch Fill. In addition to this fill, spoil may be placed North of K pit, at a depth of 50 feet or less, with a <br />maximum slope of 3H:1V. This is in accordance with the recommendations of AAI. Upon completion of <br />mining, the K Pit will be backfilled to achieve PMT, as depicted on the M12 map. <br />L Pit (f.k.a. G Pit) Mining Area <br />L pit has been developed as a strikeline and dipline dragline pit over the years. L pit currently occupies <br />the eastern portion of the east panel landslide mass. Development of this pit will occur as mining <br />progresses from the K Pit, and will utilize a combination of truck and loader stripping and dragline <br />stripping. <br />Hawken Pit Minin Area <br />Mining in Hawken pit (H -pit) was completed in April 1997. After performing reclamation activities, the <br />Queen Anne dragline walked to Ashmore pit in May 1997. <br />• <br />3-15a <br />