A Kentucky-Based Mining Operation Is Taking Over Operations Of Four Mines That Alpha Natural Resources Announced It’s Putting Up For Sale. Those Mines Include D-9 North Fork In Letcher County Kentucky, P-7 Pigeon Creek Preparation Plant In Wise County, D-7 Osaka Underground Mine And D-10 Dorchester Underground Mine. Alpha Natural Resources Announced Plans To Sale Off The Mines As Part Of A Chapter 11 Bankruptcy Reorganization.