Longwall mining is returning to the area around Interstate 70 near the West Virginia-Pennsylvania border, which means ...

Core earlier this week said it doesn't believe the "combustion-related event" at Leer South has caused any material damage to the longwall or other mining equipment. Write to Robb M. Stewart at ...

“While we are disappointed that we may be losing around two quarters of longwall production at Leer South, we are confident we are taking the right steps to protect the mine, mining ...

"While we are disappointed that we may be losing around two quarters of longwall production at Leer South, we are confident we are taking the right steps to protect the mine, mining equipment ...