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Saziar: - 2.05.2 <br />Initially, the longwall mining system is being utilized to recover the Sanborn Creek B Seam reserves <br />• previously blocked out under existing approved mining plans. The initial longwall operations in the B <br />Seam are providing valuable experience and training for future longwall operations in the D Coal <br />Seam reserves to the north and west, which will be accessed from the new Ells Creek Mtne portals. <br />Ooeradon Description <br />Eazly mining operations in the area are identified and discussed in Section 2.04.3, Site Description and <br />Land Use Information. Recent operations within the Pertnit Area (post-1960) include the Somerset <br />Mtne, Sanborn Creek Mine, and the new Elk Creek Mute. <br />The Somerset Mute ceased production at the end of 1985. The portak to the mine have been sealed <br />and no further mitring is expected to take place from the Somerset Mine B and C Seam portals <br />located in the Elk Creek drainage. Reclaimed or partially reclaimed facilities areas associated with the <br />Somerset Mine are located in Bear and Hubbard Creek Canyons. Surface coal handling, support, and <br />ancillary facilities for the Somerset Mute, originally established at the mouth of Elk Geek, have been <br />modified and upgraded over the years to meet changing operational and regulatory requirements and <br />continue to be used to support ongoing operations. <br />The Sanborn Creek Mme is the currant active mining operation, with coal production from the B <br />Coal Seam using longwall rrtuting methods. The active Sanborn Creek Mme is supported by hrttited <br />surface facilities located at the mouth of Sanborn Creek and north of the relocated railroad grade, <br />including the mine portak, substation, and ventilation installations. Current operatioru in the <br />Sanborn Creek Mrne are designed to produce approximately 4,000,000 to 4,800,000 tons of coal <br />annually. It u anticipated, that at current production rates, the existing B-Seam reserves in the <br />Sanborn Creek Mine will be depleted by approximately 2002. In order to maintain ongoing mining <br />• operations at a stable production rate, development work and initial production (development coal) <br />from the Elk Geek D-Seam Mute will be initiated in 2001. By the time the existing Sanborn Creek <br />Mme reserves are depleted, development of the fast longwall panels in the Elk Creek Mute will be <br />complete so that the longwall system can be moved from the Sanborn Creek Mme to the Elk Creek <br />Mine and longwall production from the Elk Creek Mine can be initiated with minimal delay. Final <br />production from the Sanborn Geek Mute will be scheduled to both meet coal sales commitments and <br />to gradually build-up the Elk Creek coal stockpile to maximum capacity. The stockpile will serve as a <br />buffer during the transition of longwall operations from the Sanborn Creek Mine to the Elk Creek <br />Mine so that coal shipments can continue doting the transition period. <br />The Elk Creek Mute will access the D Coal Seam from portals located in the middle portion of the <br />Elk Geek drainage. The Elk Creek Mme will be supported by limited surface facilities also located in <br />the Elk Creek drainage neaz the D Seam subcrop including the mine portak, ventilation shafts and <br />fan installations, a substation, and dewatering installations and surface water storage tank Initial <br />development activities for the Elk Creek Mine will involve the use of continuous mining equipment <br />to develop a system of main entries and to complete initial longwall panel development within the <br />private coal reserve block future development and mining would extend northward into the Federal <br />coal reserves in the Elk Creek Tract lease. Longwall mining of the coal reserves will follow initial <br />development. Future mining in the D Seam will involve the use of continuous methods for mine <br />development and longwall mining as the dominant coal production method. There is the potential <br />that additional limited ventilation, electrical distribution, and emergency access development could <br />occur as mining operations progress to the west. OMI u aware that any such facilities and surface <br />disturbances would be subject to additional permit approvak. <br />The production rate for both the existing Sanborn Creek Mine and the planned Elk Creek Mine is or <br />. will be governed by coal sales. The minimum production rate is about 500,000 tons per yeaz with a <br />mawrnum production rate of 4,800,000 tons per yeaz. <br />The Elk Creek coal handling, support, and ancillary facihties continue to be used to suppon ongoing <br />operations for the Sanborn Geek Mme and will support future operations for the Elk Creek NLne. <br />PR04 2.05-2 Revised August 2000 <br />