Toxic foam dumped into southern Illinois coal mine in unsuccessful attempt to extinguish underground fire

Read the full story at Phys.org.

Operators of a southern Illinois coal mine dumped toxic foam deep underground in an unsuccessful attempt to extinguish a fire that idled production last month, according to documents obtained by the Chicago Tribune.

The type of foam used by St. Louis-based Foresight Energy is being phased out in Illinois and 11 other states under laws that for the first time restrict unregulated chemicals known as PFAS—shorthand for perfluoroalkyl and polyfluoroalkyl substances.

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