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• Presently six main seams are recovered. They are the"H", "I", "L","M", "Q" and "R" seams. Later, other <br /> seams•may be recovered. When practicable, any rider seams are also recovered. (Refer to Section 2.7.1 <br /> for a more detailed discussion of the coal seams recovered.) <br /> In some cases, pit dewatering of open cuts will be performed using portable pumps. In addition, dewa- <br /> tering wells may be installed at the north end of the pit cuts or south above the pit cuts and in front of the <br /> advancing active mining area. The wells are constructed no more than ten feet below the lowest mineable <br /> coal seam and may be pumped prior to the beginning of actively"opening up" the area. Appropriate well <br /> permits have been filed (Section 2.7.5.4) and provide Trapper the legal right to construct and pump these <br /> wells. Appropriate records are kept concerning the volume of water pumped from the open pit cuts and <br /> drilled wells. <br /> The mining methods employed at the Trapper Mine effectively conserve and utilize the coal resource. <br /> Coal is recovered to the maximum depth that present equipment and economic limits will allow. This <br /> endeavor minimizes the possibility of remining the area by surface methods and results in a program that <br /> maximizes coal recovery and minimizes surface disturbance. <br /> 3.1.4.1 Mining Seauence <br /> Ashmore Pit Mining Area <br /> Mining in Ashmore pit (A-pit) was completed in 1999. After performing reclamation activities, the Queen <br /> Anne dragline walked to Ashmore East pit. Refer to the M10 series maps for a yearly detail of the mining <br /> and reclamation sequences for the 2003-2007 permit term. <br /> Ashmore East Pit Mining Area <br /> The Queen Anne dragline was the primary stripping machine for this area until 2003. The Baby Doe <br /> dragline will finish the stripping in this area in 2006. Refer to the M10 series maps for a yearly detail of <br /> the mining and reclamation sequences for the 2003-2007 permit term. <br /> Derringer Pit Mining Area <br /> Derringer pit (D-pit), located in the No Name drainage will remain idle (temporarily abandoned) during the <br /> 2003-2007 permit term. It will remain open to be used as a future ash disposal site. Final reclamation in <br /> Derringer Pit will occur when its ash disposal capacity is used up (in approximately 2014). See Section <br /> 3.5.5 for a description of temporary abandonment. <br /> • <br /> 3-15 Aoprc. <br />