> Coal contains a few tens to a few hundreds of Bq/kg Presumably these are from very long-lived isotopes, so will continue to emit at this rate for the forseea

> Coal contains a few tens to a few hundreds of Bq/kg Presumably these are from very long-lived isotopes, so will continue to emit at this rate for the forseeable future. In contrast, the fission products (from Chernobyl) tend to have short half lives of the order of a few days, giving a short burst of radiation. Caesium 137 looks to be the most troublesome isotope in the long term (with a half life of 30 years). https://en.wikipedia.org/wiki/Chernobyl_disaster#Relative_isotopic_abundances https://en.wikipedia.org/wiki/Chernobyl_disaster#Relative_is...