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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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The sandstone cap rock was present over the entire mine, and made a good roof. Water seeped from the sandstone and made the mine very wet. The immediate roof over the coal was 2 to 2.5 feet of black shale that usually came down. Clay horsebacks were common, but seldom over 4 inches wide. Pyrite was present as fracture facings and, less commonly, as lenses and nodules. The 10 feet of underclay heaved when the mine was wet and the entries too wide.
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