File:Penn carbondale 4-75.jpg

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Figure 4-75. Photograph illustrating the great thickness of the Herrin Coal close to the Walshville channel. This photograph was taken circa 1915 in the Old Ben No. 9 underground mine near West Frankfort in Franklin County, Illinois. Wearing a soft cap with open-flame carbide lamp and smoking a pipe, the miner is undercutting the coal seam in preparation for drilling shot holes and blasting with black powder. Photograph donated to ISGS by the Illinois Mining Institute.

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