In an investigative reporting piece on coal fires near Berea, Dr. Jim Hower was contacted for comment:

Jim Hower, a University of Kentucky researcher who studies Kentucky's underground fires, said the smoke can produce carcinogens. However, he said it likely doesn't present a health risk as long as people stay away from the plumes.


“In the course of being outside, walking by these fires, you want some protections, but they're also probably not in the concentration, or the length of exposure and intensity of exposure that are going to cause an immediate danger to somebody,” he said. “They smell bad, and it's certainly something you don't want to be living with.”


The full story can be viewed here on LEX18's website.