There is actually an underground out-of-control coal fire in Pennsylvania that has been burning for over 50 years in a relatively small area. There is nothing that can be done for it but to let it burn itself out.
The fire started around 1962 and it didn't really gain notoriety until the late 1970s. During the early 1980s they had to pretty much evacuate and shut down the town that was over it. It's a fascinating story. The fire is expected to continue for hundreds if not thousands of more years.
ok thanks
as im neither sailor nor miner (getting both seasick and clausrophobic)
i have to plead ignorance (but ONLY on this one very very very narrow subject!))))
thanks,
smile smile
fhc