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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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Much surface water entered the mine through slips in the overlying shale, even coming in as a constant flow in the northern part of the mine. In a few places in the northern part of the mine, the roof consisted of 6 to 18 inches of fissile shale that would fall when the top coal came down, and the fall would propagate upward several feet. Whenever possible, 20 to 24 inches of top coal was left to support the roof. The floor was a soft green shale that heaved when the entries were too wide. Squeezes were reported in the western part of the mine.
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