In the year 2099 A.D, humans made a major discovery. There is a rich source of fossil fuel buried beneath layers of Martian soil. It is estimated that the coal deposit that was discovered could fill as much as 1 billion barrels of oil and there are probably more to be discovered.
While it is tempting to set them ablaze in a controlled setup, will people use them as their main source of fuel or there are better alternatives?
Assume there was life in the early history of the red planet long before we colonized it.