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~• seam into the stratigraphically higher G seam when the fault was crossed. <br />A cross section has been constructed utilizing holes UG-8, UG-9, TR-9, and <br />TR-10 (Exhibit B). This illustrates the relative positions of the units <br />and gives a representation of the areal extent of the G seam sandstone. <br />Underground Mapping <br />It became apparent immediately upon entering the section that there <br />had been a significant change in the position of the inflow to the mine <br />since the fault had first been encountered. The roof conditions were <br />mapped first on 3/10/82. The object was to categorize the roof conditions <br />into dry (no latent moisture apparent), moist (roof was damp and might <br />drip, but there were not steady streams of water), and wet (steady streams. <br />~, (• issued from cracks in the top coal or holes drilled to determine quantity <br />of top coal). The roof conditions were then remapped on 3/15/82 and again <br />on 3/20/82. The change in the position of the "water front" was <br />remarkable over a short time span. ALso, the front approximately <br />parallels the dip of the coal. Exhibits C, D, and E illustrate the <br />results of the mapping program. <br />Extrapolation of Data from the Mine <br />Although all holes that have been drilled from the surface in the 2 <br />West area have been logged, hole 81-07 was particularly useful in that it <br />includes npt only the standard suite of coal logs, but also <br />neutron-neutron, sonic, differential/absolute temperature, and resistivity <br />J logs. Once it became apparent that Empire had changed seams when crossing <br />the fault, and that there occurred sandstone above this seam, an attempt <br />