Core Takes Steps to Address Combustion-Related Activity at its Leer South Mine

CANONSBURG, Pa., Jan. 16, 2025 /PRNewswire/ -- Core Natural Resources, Inc. (NYSE: CNR) today announced that it was taking steps to temporarily seal the Leer South mine's active longwall panel in order to extinguish isolated combustion-related activity there. Based on its collaborative, ongoing discussions with regulatory authorities, Core believes Leer South will be able to resume development work with continuous miners within the next three months, and to resume longwall mining mid-year.