https://www.usgs.gov/publications/paleoslumps-coal-bearing-strata-breathitt-group-pennsylvanian-eastern-kentucky-coal
Paleoslumps in coal-bearing strata of the Breathitt Group (Pennsylvanian), Eastern Kentucky Coal...
The benefits of geologic analysis for roof-control studies and hazard prediction in coal mines are well documented. Numerous case studies have illustrated the...
of the