Category:Coal Valley-Quadrangle: Revision history

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January 12, 2024

February 18, 2022

June 19, 2020

  • curprev 15:3015:30, June 19, 2020Alan.Myers talk contribs 3,135 bytes +3,135 Created page with "__NOTOC__ ==Mining in the Coal Valley Quadrangle== The earliest record of coal mining in Rock Island County is 1867, when 68,000 tons were mined (indicating that mining starte..."