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Verified Coordinates: Latitude, Longitude (i.e 38.077,-89.030)
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An explosion in 1951 resulted in 119 men killed, ranking second only to the Cherry Mine fire (Bureau County, 1909) in number of deaths. The mine had been classified as gassy, and had additional safety procedures (rock dusting to alleviate combustible coal dust in the mine, certified examiners monitoring the mine prior to each shift, etc.) An exhaustive investigation of the cause of ignition was narrowed down to two possibilities: an electrical arc from the operation of a motor or personnel smoking underground. The methane gas had apparently migrated from abandoned workings. The roof was at least 40 feet of shale, and generally up to 19 inches of top coal was left to support this roof. Some calcite appeared as fracture filler, and some thin pyrite stringers were present in the top coal. Some small slips were present, but did not seriously affect mining. The northward dip of the bed and the presence of a few rolls required some grading to be performed. The floor consisted of 4 to 18 inches of underclay that heaved “readily but not far”. The microfilm source map shows generally north-trending faults along the west side of the mine, part of the Rend Lake Fault System. In some cases, mining was not badly impacted, but in other areas, entries and rooms were truncated due to faulting.
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