Hower, James C, Gerald A Thomas, and Shelley G Hopps. 2014. “Trends in Coal Utilization and Coal Combustion Product Production in Kentucky: Results of the 2012 Survey of Power Plants.” Coal Combustion and Gasification Products 6 (4): 35–41. https://doi.org/10.4177/CCGP-D-14-00006.1.
