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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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Clay veins, slips and rolls occurred in this mine. The black shale roof contained concretions and slips. The slips extended up into the limestone above the shale. The displacement was generally 5 or 6 inches, but the roof was bad in the vicinity of slips and came down in massive blocks. Gas was also present in the slips, and water seeped in from the slips. The floor clay heaved badly when wet. In one case where the pillar was slightly robbed and the clay was wet, the floor heaved 3 feet.
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