Question

What coal mine is still burning?

Answer 1

Underground mines i n JHaria DHanbad India was burning for the past 40 o r 50 years.

Explanation:

I have seen this in 1970 period. smoke coming out from ground.
http://www.cnbc.com/2015/12/02/indias-jharia-coal-field-has-been-burning-for-100-years.html
pictuire credddit CNBC>