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Elimination and Suspension of Subsidence Mooitoriue <br />Cyprus Empire has been conducting subsidence monitoring since it began mining in the No. 5 Mine (D Seam). <br />Originally, the monitoring network was established to record actual versus predicted subsidence over room and <br />pillar areas. The monument associated with this work was positioned on monitoring rows A, B, C, and D. A <br />longwall was installed in the No. 5 Mine and monitoring lines were set up over panels 12 East, 13 East, and 14 <br />East. The Division approved the discontinuance of subsidence monitoring at the No. 5 Mine on November I, <br />1988. <br />Since the completion of mining at the No. 5 Mine, CEC has continued its operations into the No. 6 Mine (E Seam). <br />A monitoring network was established to verify subsidence predictions; this network has served the mine well. <br />The network was established to measure subsidence over both previously subsided areas and new areas to be <br />subsided. Additionally, points were established over the north mains in the No. 6 Mine to measure subsidence <br />along Highway 13 and the Williams Fork River. Specifically, the reader is referred to lines A, B, C, D, H, J, S, <br />and R for location of the No. 6 Mine monuments. <br />CEC monitored these points until September 1997. Based upon the 1996 monitoring program, CEC requested, <br />and the Division approved, the: <br />• Elimination of monitoring points located on lines A, B, C, D, and S; and <br />• Suspension of monitoring points located on line J, points Hl - H3, and RI - R3 <br />The monuments for lines A, B, C, D and S will be left in place or removed in accordance with the approved <br />reclamation plan. The monuments on line J and points Hl - H3 and Rl - R3 are to remain in place until removal is <br />authorized by the Division. <br />TR 97-30 2.05.5(6)-16Ra-I 9/30/97 <br />