Geologic image in the Kentucky Geological Survey data repository.Image Name: Coal, Harlan County Image Date: 8/29/2007 Category: photo_scene Source: Carey, Dan Format: JPG Size (MB): 0.5 Pixel Dimensions: 2272 x 1704 Description: From 1910 to 2004, Harlan County produced over 917 million tons of coal, of which 823 million was from underground mines.