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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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The immediate roof was 2 feet of black shale, with 6 to 8 inches of clod above that, and 4 to 8 inches of limestone above the clod. This roof shale was cut out in haulage routes to make head room for the mules. Many pyrite nodules and coal balls up to 18 inches in diameter were common in the roof. The coal balls protruded down into the coal and some would drop out of the roof once the coal was removed while some would stay up in the roof indefinitely. The bottom 2 to 6 inches of the black shale roof was a draw slate that would sometimes stay up and sometimes adhere to the coal. Pyrite distribution within the coal seam was irregular but often present in nodules and lenticular layers 2 feet below the roof. Horsebacks were numerous, and cut the coal out completely, but were generally thin. One horseback was 6 feet wide and extended upwards into the roof. The mine was dry and no heaving was noted. Pressurized water was encountered in one room (a horizontal drill hole released the pressure so that the water shot out 30 feet from the hole), but that room was kept sealed and the water pumped out.
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