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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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The source map shows a mining pattern indicating a fault that interfered with mining in NW SENE 17-T13N-R3W. This normal fault extended southeast into Peabody No. 10 Mine (mine index 693), where the coal was downthrown 7 to 15 feet to the northeast. The immediate roof over the coal was a black shale that varied from 0 to 5 feet thick. Above the shale was a limestone that also ranged from 0 to 5 feet thick. Timbering was required where the roof was shale over 30 inches thick. When the shale was less than 30 inches, it was taken down when the coal was removed. The limestone made a very good roof. Slips and sandstone rolls were observed in the mine. Rolls were more common in the western part of the mine, and had the effect of lowering the top of the coal 3 to 4 feet. Impurities in the coal were pyrite in lenses and bands, and calcite in fracture fillings. The soft underclay floor heaved, and several bad squeezes had occurred at the mine.
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