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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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Slips and rolls contributed to bad roof conditions. Top coal was left to support the roof only near the shaft. The mine roof was about half black shale and half white top and gray shale. A microfilm source map (document 352127) showed areas of bad roof, particularly in the southern part of the mine and in 23-T5S-R3W. These areas were labeled βbad topβ on the source map, but similar areas were also unmined in the northern part of the mine, without the label. Other poor geologic conditions may have existed. The seam contained considerable bone coal and shale layers. Pyrite was present in the shale layers as well as in lenses and nodules in the coal seam.
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