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14. Please provide an F-sears: contour structure map. Response: A Bottom Structure Map - F-Seam (Map 9A) has been generated from old mapping data and is included with this response submittal for insertion in the PAP. I5. Please submit, as an exhibit of your bond release application, a map that superimposes surface cracks and other subsidence features, H-sewn workings, F-sewn workings, significant and recognizable surface features (roads, railroads, etc.), and structural contours of the F-seam (irz the areas of F-Seam workings) for area of the W'/z Sec 31 T6N R91 and an equivalent area (1/2 Section in size) contiguous to the west (R92W). Please keep the scale of the drawing larger than 1 inch equals Z50 feet. Please color code the above features. Response: The requested map is not required, either as part of a bond release application or a mine permit application, however with the exception of mapping of surface subsidence features (not required under the approved permit), the identified information is generally available from existing information provided in the PAP, as follows: Map 4, Abandoned/Active Mines Map 9, Overburden Isopach - "F' Coal Seam Map 9A, Bottom Structure Map - F-Seam (New) Map 22, Life-of-Mine Plan Map 23, No. 5 Mine Plan Map 24, No. 6 Mine Plan Map 25, Structures and Renewable Resources Map 30, Subsidence 16. Please provide the initiation and drawdown elevations of the Seven North Angle Pump and the No. S Mine Pump, and tine divide (spill point) elevation for hydraulic communication between the F and underlying E seam workings. The purposes of items 14 and IS are to illustrate the spatial relationships beriveen the subsidence features, H-Seam workings, and the F-Seam workings, and to determi~ae if areas of F-Seam workings located near or under subsidence features are (or were) subject to alternate flooding and dewatering. Response: Please refer to the previous response to Comment 12. Based on hydrologic monitoring records, the water level variation between initiation and cessation of pumping operations is roughly 30 feet. Given that pumping is initiated when groundwater levels reach an elevation of approximately 5,800' amsl, areas directly affected by dewatering (ie: alternate wetting and drying) generally fall between 5,770' and 5,800' amsl. These areas are well below the abandoned mine workings in the proposed liability release area. There is not a fixed elevation that correlates to the hydraulic connection between the E- and the F-Seams, given that both dip to the northeast, there is some variability in both structure and interburden thickness, and that hydraulic connections include natural fracturing, inter-connected spoils, subsidence fractures, open mine workings, and drainage boreholes. 17. A Denver Post newspaper article, published February 3, 2005, stated that Peabody Energy Corp., RAG-EC/BTU-Empire's parent company, "is evaluating whether to reopen the long-slauttered Empire Mine. " Is RAG-EC/BTU-Empire planning to re-open the Eagle Mine Complex in the near future? !f sq what is the projected time frame for re-opening the mine? Liability Release Response - No. 3 1 12/07/05