Business
Core Natural Resources Announces Resumption of Longwall Mining at Leer South
Today, Core Natural Resources, Inc. (NYSE: CNR) ("Core," the "company," "we" or "our") announced that it has resumed longwall operations at its Leer South metallurgical mine in Barbour County, West Virginia. The longwall system had been idle since January 13, 2025, when combustion-related activity was detected in a previously mined area.
About this update from Core Natural Resources, Inc.
[{"type":"text","content":"CANONSBURG, Pa., Dec. 18, 2025 /PRNewswire/ -- Today, Core Natural Resources, Inc. (NYSE: CNR) ("Core," the "company," "we" or "our") announced that it has resumed longwall operations at its Leer South metallurgical mine in Barbour County, West Virginia. The longwall system had been idle since January 13, 2025, when combustion-related activity was detected in a previously mined area.","length":431,"tagName":"p"},{"type":"image","alt":"CNR Logo (PRNewsfoto/Core Natural Resources)","displaySize":"","headline":null,"caption":"CNR Logo (PRNewsfoto/Core Natural Resources)","className":"","disableSlideshowImg":false,"size":{"original":{"width":400,"height":195,"url":"https://media.zenfs.com/en/prnewswire.com/a0601e6f839db8ab5ba0d64e3479749c"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/QEidLiu.F.aqy5ZPyENBLw--/YXBwaWQ9aGlnaGxhbmRlcjt3PTcwNTtoPTM0NDtjZj13ZWJw/https://media.zenfs.com/en/prnewswire.com/a0601e6f839db8ab5ba0d64e3479749c","width":400,"height":195}},"href":"https://mma.prnewswire.com/media/2681943/Core_Horizontal_PMS_Full_YG_Logo.html","hrefExternal":true,"rel":"nofollow"},{"type":"text","content":"In addition, Core announced that its West Elk longwall mine in Colorado is now executing at consistent productivity levels following a period of transition associated with its move to the B-Seam, and Core expects that improved performance to continue in future periods.","length":269,"tagName":"p"},{"type":"text","content":""On behalf of the entire board and management team, I commend the operations team for making safety their highest priority in the successful recovery, repositioning, and restart of the longwall system," said Jimmy Brock, Core's chairman and chief executive officer. "In addition, we want to again extend our appreciation to federal, state and local regulatory officials for their collaboration and support. Leer South is a highly strategic asset, and we fully expect this world-class operation to execute at a high level in 2026 and beyond. While the issues at Leer South and West Elk adversely affected Core's performance in 2025, we are looking forward to strong cost improvement and profitability at both these operations going forward."","length":768,"tagName":"p"},{"type":"text","content":"The Core team was successful in recovering the m...