Do coal-fired power stations produce radioactive waste?
Scientific American article on the radioctivity of ash from coal fired power stations.
Link provided for reference - Linked article © Scientific American
See also: McBride, J. P., Moore, R. E., Witherspoon, J. P., & Blanco, R. E. (1978). Radiological Impact of Airborne Effluents of Coal and Nuclear Plants: Radiation doses from airborne effluents of a coal-fired plant may be greater than those from a nuclear plant. Science, 202(4372), 1045-1050.