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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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Some old workings were encountered while excavating some of the pits. The Brereton Limestone above the Herrin Coal was up to 5 feet thick in some places, absent in some places, and was sometimes lenticular. In some places the upper part of the limestone was nodular. Sandstone was present 5 to 10 feet above the coal. Clay dikes were common in some pits. The blue band in this area was about 9 inches from the top of the seam.
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