Mines
Illinois State Geological Survey - shows where areas are undermines. On the left side of the page under "Maps, Data..", choose Maps, then under "By Theme" choose "Ill. Coal Mines Quadrangle Maps", choose Gillespie South for the Benld area.
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"Wisdom is perishable. Unlike information or knowledge, it cannot be stored in a computer or recorded in a book. It expires with each passing generation."
—Sid Taylor |
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