Map Showing Underground Coal Mines in Clay County, Indiana 1 inch = 1 mile (1:63,360) 2 1 0 2 4 Kilometers 1 0 1 2 Miles ± This map shows the loions of underground coal mines and mine entries in Clay County, Indiana, which includes updated mine loions. Updated mine maps are collected annually from the Indiana Department of Natural ...
![](/themes/3fr7/images/logo/logo.png)