The Pennsylvania Department of Environmental Protection is working to determine how big an underground mine fire is in Fairchance Borough.

Pa. — The underground mine fire in Centralia, Columbia County ... We began our investigation at the site of the coal region's most famous mine fire, Centralia. Once home to more than 1,000 ...

Since (at least) 1962, an underground coal fire has been smoldering right below ... Over the past 30-odd years, Centralia, PA ...

And how this fire started still remains a mystery. But chemistry can help explain why it's still going. Centralia, Pennsylvania sits atop a few of the biggest coal deposits in the world.

In Pennsylvania's coal-mining mountains ... But, on 27 May 1962, Centralia changed. A fire spread from a surface mine to underground seams, and kept burning. (It's not known how the fire started ...

And how this fire started still remains a mystery. But chemistry can help explain why it's still going. Centralia, Pennsylvania sits atop a few of the biggest coal deposits in the world.