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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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The coal was overlain by 5 to 6 feet of Dykersburg Shale. In the northern part of the pit, only a black shale was present directly over the coal. Some slip fractures were present in the seam. Pyrite was abundant in the cleats. The Herrin Coal was mined in a few places where it was not eroded under the glacial drift.
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