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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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The roof was variable, with some areas of carbonaceous clod that ranged from 2 to 8 feet thick. In one room with the clod roof, the roof had caved, exposing 4 feet of light gray underclay and the base of the next higher coal. The bottom 12 inches of the coal was dull, hard, and tough. Sometimes 3 to 4 inches of blackjack was present at the base of the seam, just above the underclay.
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