Core Natural Resources Announces Resumption of Longwall Mining at Leer South

Core Company Overview - Core Natural Resources, Inc. (NYSE: CNR) is a leading producer of high-quality metallurgical and thermal coals, operating a portfolio of large-scale, low-cost longwall mines, including the Pennsylvania Mining Complex, Leer, Leer South, and West Elk mines [5] - The company was formed in January 2025 through the merger of CONSOL Energy and Arch Resources, and is headquartered in Canonsburg, Pennsylvania [5] Recent Operational Developments - Core has resumed longwall operations at its Leer South metallurgical mine in West Virginia, which had been idle since January 13, 2025, due to combustion-related activity [1] - The West Elk longwall mine in Colorado is now achieving consistent productivity levels after transitioning to the B-Seam, with expectations for continued improved performance [2] Management Commentary - The chairman and CEO of Core commended the operations team for prioritizing safety during the recovery and restart of the longwall system at Leer South, emphasizing the strategic importance of this asset [3] - The senior vice president and COO highlighted the professionalism and dedication of the operations team, projecting that Leer South will operate efficiently and effectively in 2026 [4] Financial Outlook - Core anticipates a significant improvement in financial performance in 2026 due to the restart at Leer South, improved geological conditions at West Elk, and substantial insurance recoveries related to the combustion event [4] - The company expects to benefit from the cessation of fire-suppression and idling costs at Leer South, as well as ongoing merger-related synergies [4]