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Introduction This report is for the period from July 2006 through December 2006. Mine Construction of the Bowie No. 2 Mine began during May of 1997, with coal production beginning during August 1997. i• The mining permit application for the Bowie No. 2 Mine requires the operator to submit the results of the subsidence monitoring programs and the results of the visual inspections of known modern and historic landslides within the permit and adjacent area for stability in June and December of each year and report these results to the Division within 30 days of the ends of the reporting periods. The operator is also required to inspect these landslides, both modem and historic monthly for six months immediately after retreat mining occurs. This same inspection routine is applied to any spring or pond in the immediate proximity of retreat mining. Longwall mining during the period included a minor amount of mining at the end of the 62 panel, complete mining of the B-3 panel and partial mining in B4 panel. Visual Inspection of known historic and modern landslides. A visual inspection of all known historic and modern landslides was conducted during November 2006 by Brad Lindsay, Rock Logic Consulting LLC. Mr. Lindsay's report is attached. Increased Inspection activity associated with retreat mining. Accessible subsidence cracks are repaired during coal exploration events and are monitored by both coal exploration supervisors and hydrologic monitoring technicians. The accessible visual results of the subsidence effects associated with the Bowie No. 2 Mine are overlain on Map 27 - C Subsidence Features. Map 27-C is enclosed. During this period, no hydrologic monitoring points were impacted or re-impacted by mining activities. Potentially impacted or re-impacted means the mine workings or angle of draw of the mine workings passed under the monitoring point during the reporting period. No influence to any hydrologic monitoring points was observed during this period. Results of Subsidence Survey Monitoring The results of the August and November 2006 monitoring are attached. As in the past, the survey was performed by Cragg Surveying using GPS methods. Analysis of Subsidence Data The following table presents an analysis of the subsidence survey data. Panel B1 was complete and panel B-2 had advanced about 4700' at the time the survey was performed. Following is a summary of the survey data collected during the period. There was no activity near Hubbard Creek or Dove Gulch. The survey data presents the subsidence over the west D-Seam longwall panels after all three panels were complete and the subsidence attributable to panels B-1, B2 and 63.