Category:Coffeen-Quadrangle: Revision history

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February 18, 2022

June 19, 2020

  • curprev 16:3416:34, June 19, 2020‎ Alan.Myers talk contribs‎ 2,091 bytes +2,091‎ Created page with "__NOTOC__ ==Mining in the Coffeen Quadrangle== Mining near Coffeen took place in the Herrin Coal, which ranged from 5.8 to 8 feet thick. The coal was deep, being 450 feet or m..."
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