Re: nice story
"As for radioactivity - well Carbon has several common isotopes anc the process of burning will often result in some localised concentrates forming.!
Carbon has one common isotope, 12, one fairly uncommon isotope, 13, and one more uncommon isotope, 14. It's only the last which is radioactive (weak beta) with a half-life of 5,000 plus years. C14 is produced at a fairly, but not entirely constant, rate in the upper atmosphere by the action of cosmic rays on nitrogen so its level in the atmosphere and hence in living things is fairly constant. Coal has not been a living thing for millions of years old and any remaining C14 would be well below the limits of practical detection.
Biting the hand that feeds IT
