Category:Flat Rock-Quadrangle: Revision history

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    October 26, 2022

    • curprev 15:3215:32, October 26, 2022‎ Alan.Myers talk contribs‎ 1,463 bytes +1,463‎ Created page with "__NOTOC__ ==Mining in the Flat Rock Quadrangle== The Bristol Hill Coal was mined in the Flat Rock Quadrangle. The coal was less than 3 feet thick, but shallow in many places (less than 20 feet deep) and easily surface-mined. The mines were small, local mines that did not operate long or excavate large areas. ==Map and Directory PDF Download== [https://wikiimage.isgs.illinois.edu/ilmines/webfiles/topo-mines/Flat-Rock.pdf Coal Mines In Illinois Flat Rock Quadrangle]</br>..."
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