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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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The shale roof fell badly, whether the roof consisted of black fissile shale or massive light gray shale referred to as “clod”. Small slips and limestone rolls were present in the roof throughout the mine. “The limestone here, contrary to its usual character, does not make a good roof but breaks easily and, in fact, most of the roof has fallen to the second limestone above. Where the lower limestone falls, the shale remains in place for awhile and then falls, making it an extremely precarious roof. Slips go clear to the second limestone, and timbering does no good.” Irregularities within the seam that were noted include shale bands up to 1 inch thick and thinner charcoal bands, as well as pyrite bands and lenses, and abundant calcite or gypsum fracture fillings that were present throughout the coal vertically and laterally.
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