Category:La Rose-Quadrangle: Revision history

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    October 27, 2022

    • curprev 09:5209:52, October 27, 2022‎ Alan.Myers talk contribs‎ 2,245 bytes +2,245‎ Created page with "__NOTOC__ ==Mining in the La Rose Quadrangle== The only mine known to have operated in this quadrangle was the Toluca Coal Company mine, which closed in 1924. It mined the Colchester Coal and the Danville Coal. The Colchester Coal averaged about 3 feet in thickness, and was at a depth of 500 to 550 feet in most places. The preferred method of mining the Colchester Coal in this northeastern part of the state was the longwall method. Unfortunately, no maps were located dep..."
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