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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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A fault system was encountered in the East North mains and the East South mains, which had up to 8 feet of displacement. The main fault zone was about 15 feet wide, with as much as 55 feet of displacement. Oil seeped in along the fault. The roof over most of the mine was Energy Shale, often massive and very silty. Some large (up to 12 inches long) limestone nodules were noted in the Energy Shale. Generally 6 to 10 inches of top coal was left to support and protect the Energy Shale roof. The Anna Shale was the immediate roof over the coal in some rare cases. The coal seam contained rolls 3 to 4 feet wide and smaller. Concretions, small and elongated, occurred in places. Erosional channels were also present. Minor floor heave was seen in several places, along both entries and crosscuts (no preferred orientation).
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