Each of the most heavily mined coal seams in the Western Kentucky Coal Field, as indicated by analyses, mine visits, and discussions with mine inspectors and engineers, has its own roof and floor characteristics. Also, because roof rocks above several of the seams are laterally continuous (especially in the Carbondale Formation), roof characteristics related to rock type are often widespread and continuous between mines. This chart discusses the mining geology of three western Kentucky coal beds, highlighted on the stratigraphic column shown in Figure 1.
Additional mining obstacles that can affect all coal beds and roof strata are (1) tectonic faulting, which is prevalent in western Kentucky, (2) fractures related to low cover and past mining, and (3) fractures related to the regional tectonic stress field.
Map and Chart 12
Digital Object Identifier (DOI)
Data collection was partly funded by the National Coal Resources Data Systems and National Coal Assessment Programs of the U.S. Geological Survey.
Greb, Stephen F. and Williams, David A., "Mining Geology of Coals in Western Kentucky" (2000). Map and Chart--KGS. 12.