Originally posted by AbleEndangered
One More Thought:
This would be the Ultimate source of Geo-Thermal Energy!
I concurr. Personally, I think geothermal is way under-utilized/studied.
It seems to me, wherever you are on the Earth, it's just a question of depth. I don't think you need to hit the mantle or magma to get effective geothermal to work though. You just need to go deep enough to get a big enough difference in temperature between the surface and the bottom of the bore to use for running a fluid of some kind through a turbine.
Obviously, in some places, that's available at much shallower depths than in other places. Ironically, the industry that probably has the "stock-pile" of data that would be needed (i.e. how far down in various locations are different temperatures found), is the oil and natural gas exploration industry. They've been drilling holes all over the planet for decades. They are probably accustomed to dealing with heat along the way - as a nuisance.
Of course, I do understand the fears also, this idea of deliberately drilling all the way to the mantle has definitely been explored in Science-Fiction ...
"Crack in the World" - [Wikipedia Page], [IMDB Page]