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| Jim Yasinski posted Thayer, Illinois Coal Mine |
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| Dennis DeBruler commented on Jim's post https://wikiimage.isgs.illinois.edu/ilmines/webfiles/topo-mines/virden-north.pdf |
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| 1924 Waverly Quad @ 62,500 |
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| Dennis DeBruler commented on Jim's post The buildings and tailings pile were still standing in 1939. https://clearinghouse.isgs.illinois.edu/webdocs/ilhap/county/data/sangamon/flight17/0bhd04037.jpg |
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